for Journals by Title or ISSN
for Articles by Keywords
help
  Subjects -> CHEMISTRY (Total: 846 journals)
    - ANALYTICAL CHEMISTRY (50 journals)
    - CHEMISTRY (597 journals)
    - CRYSTALLOGRAPHY (22 journals)
    - ELECTROCHEMISTRY (25 journals)
    - INORGANIC CHEMISTRY (41 journals)
    - ORGANIC CHEMISTRY (45 journals)
    - PHYSICAL CHEMISTRY (66 journals)

CHEMISTRY (597 journals)                  1 2 3 | Last

Showing 1 - 200 of 735 Journals sorted alphabetically
2D Materials     Hybrid Journal   (Followers: 7)
Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 26)
ACS Catalysis     Full-text available via subscription   (Followers: 31)
ACS Chemical Neuroscience     Full-text available via subscription   (Followers: 17)
ACS Combinatorial Science     Full-text available via subscription   (Followers: 23)
ACS Macro Letters     Full-text available via subscription   (Followers: 22)
ACS Medicinal Chemistry Letters     Full-text available via subscription   (Followers: 39)
ACS Nano     Full-text available via subscription   (Followers: 217)
ACS Photonics     Full-text available via subscription   (Followers: 10)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 20)
Acta Chemica Iasi     Open Access   (Followers: 2)
Acta Chimica Sinica     Full-text available via subscription  
Acta Chimica Slovaca     Open Access   (Followers: 1)
Acta Chromatographica     Full-text available via subscription   (Followers: 9)
Acta Facultatis Medicae Naissensis     Open Access  
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 5)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 7)
Adsorption Science & Technology     Full-text available via subscription   (Followers: 5)
Advanced Functional Materials     Hybrid Journal   (Followers: 48)
Advanced Science Focus     Free   (Followers: 3)
Advances in Chemical Engineering and Science     Open Access   (Followers: 53)
Advances in Chemical Science     Open Access   (Followers: 12)
Advances in Chemistry     Open Access   (Followers: 12)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 18)
Advances in Drug Research     Full-text available via subscription   (Followers: 22)
Advances in Enzyme Research     Open Access   (Followers: 10)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 8)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 14)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 8)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 18)
Advances in Nanoparticles     Open Access   (Followers: 12)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 15)
Advances in Polymer Science     Hybrid Journal   (Followers: 40)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 18)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 18)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Science and Technology     Full-text available via subscription   (Followers: 10)
African Journal of Bacteriology Research     Open Access  
African Journal of Chemical Education     Open Access   (Followers: 2)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 7)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 3)
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 65)
American Journal of Biochemistry and Molecular Biology     Open Access   (Followers: 14)
American Journal of Chemistry     Open Access   (Followers: 25)
American Journal of Plant Physiology     Open Access   (Followers: 13)
American Mineralogist     Full-text available via subscription   (Followers: 12)
Analyst     Full-text available via subscription   (Followers: 38)
Angewandte Chemie     Hybrid Journal   (Followers: 153)
Angewandte Chemie International Edition     Hybrid Journal   (Followers: 203)
Annales UMCS, Chemia     Open Access   (Followers: 1)
Annals of Clinical Chemistry and Laboratory Medicine     Open Access   (Followers: 1)
Annual Reports in Computational Chemistry     Full-text available via subscription   (Followers: 3)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (Followers: 3)
Annual Reports Section B (Organic Chemistry)     Full-text available via subscription   (Followers: 7)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 12)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 14)
Anti-Infective Agents     Hybrid Journal   (Followers: 3)
Antiviral Chemistry and Chemotherapy     Hybrid Journal  
Applied Organometallic Chemistry     Hybrid Journal   (Followers: 6)
Applied Spectroscopy     Full-text available via subscription   (Followers: 22)
Applied Surface Science     Hybrid Journal   (Followers: 26)
Arabian Journal of Chemistry     Open Access   (Followers: 6)
ARKIVOC     Open Access   (Followers: 2)
Asian Journal of Biochemistry     Open Access   (Followers: 1)
Atomization and Sprays     Full-text available via subscription   (Followers: 3)
Australian Journal of Chemistry     Hybrid Journal   (Followers: 7)
Autophagy     Hybrid Journal   (Followers: 2)
Avances en Quimica     Open Access   (Followers: 1)
Biochemical Pharmacology     Hybrid Journal   (Followers: 9)
Biochemistry     Full-text available via subscription   (Followers: 277)
Biochemistry Insights     Open Access   (Followers: 5)
Biochemistry Research International     Open Access   (Followers: 6)
BioChip Journal     Hybrid Journal  
Bioinorganic Chemistry and Applications     Open Access   (Followers: 9)
Bioinspired Materials     Open Access   (Followers: 3)
Biointerface Research in Applied Chemistry     Open Access   (Followers: 2)
Biointerphases     Open Access   (Followers: 1)
Biology, Medicine, & Natural Product Chemistry     Open Access  
Biomacromolecules     Full-text available via subscription   (Followers: 18)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 10)
Biomedical Chromatography     Hybrid Journal   (Followers: 6)
Biomolecular NMR Assignments     Hybrid Journal   (Followers: 3)
BioNanoScience     Partially Free   (Followers: 4)
Bioorganic & Medicinal Chemistry     Hybrid Journal   (Followers: 107)
Bioorganic & Medicinal Chemistry Letters     Hybrid Journal   (Followers: 99)
Bioorganic Chemistry     Hybrid Journal   (Followers: 10)
Biopolymers     Hybrid Journal   (Followers: 18)
Biosensors     Open Access   (Followers: 2)
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 1)
Bitácora Digital     Open Access  
Boletin de la Sociedad Chilena de Quimica     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 2)
Bulletin of the Chemical Society of Japan     Full-text available via subscription   (Followers: 24)
Bulletin of the Korean Chemical Society     Hybrid Journal   (Followers: 1)
C - Journal of Carbon Research     Open Access   (Followers: 2)
Canadian Association of Radiologists Journal     Full-text available via subscription   (Followers: 2)
Canadian Journal of Chemistry     Full-text available via subscription   (Followers: 10)
Canadian Mineralogist     Full-text available via subscription   (Followers: 3)
Carbohydrate Research     Hybrid Journal   (Followers: 26)
Carbon     Hybrid Journal   (Followers: 67)
Catalysis for Sustainable Energy     Open Access   (Followers: 6)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 8)
Catalysis Science and Technology     Free   (Followers: 6)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysts     Open Access   (Followers: 7)
Cellulose     Hybrid Journal   (Followers: 7)
Cereal Chemistry     Full-text available via subscription   (Followers: 4)
ChemBioEng Reviews     Full-text available via subscription   (Followers: 1)
ChemCatChem     Hybrid Journal   (Followers: 8)
Chemical and Engineering News     Free   (Followers: 12)
Chemical Bulletin of Kazakh National University     Open Access  
Chemical Communications     Full-text available via subscription   (Followers: 69)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 23)
Chemical Research in Chinese Universities     Hybrid Journal   (Followers: 3)
Chemical Research in Toxicology     Full-text available via subscription   (Followers: 19)
Chemical Reviews     Full-text available via subscription   (Followers: 165)
Chemical Science     Open Access   (Followers: 21)
Chemical Technology     Open Access   (Followers: 15)
Chemical Vapor Deposition     Hybrid Journal   (Followers: 4)
Chemical Week     Full-text available via subscription   (Followers: 7)
Chemie in Unserer Zeit     Hybrid Journal   (Followers: 55)
Chemie-Ingenieur-Technik (Cit)     Hybrid Journal   (Followers: 25)
ChemInform     Hybrid Journal   (Followers: 7)
Chemistry & Biodiversity     Hybrid Journal   (Followers: 6)
Chemistry & Biology     Full-text available via subscription   (Followers: 30)
Chemistry & Industry     Hybrid Journal   (Followers: 5)
Chemistry - A European Journal     Hybrid Journal   (Followers: 136)
Chemistry - An Asian Journal     Hybrid Journal   (Followers: 15)
Chemistry and Materials Research     Open Access   (Followers: 17)
Chemistry Central Journal     Open Access   (Followers: 4)
Chemistry Education Research and Practice     Free   (Followers: 5)
Chemistry in Education     Open Access   (Followers: 9)
Chemistry International     Hybrid Journal   (Followers: 2)
Chemistry Letters     Full-text available via subscription   (Followers: 43)
Chemistry of Materials     Full-text available via subscription   (Followers: 189)
Chemistry of Natural Compounds     Hybrid Journal   (Followers: 9)
Chemistry-Didactics-Ecology-Metrology     Open Access  
ChemistryOpen     Open Access   (Followers: 2)
Chemkon - Chemie Konkret, Forum Fuer Unterricht Und Didaktik     Hybrid Journal  
Chemoecology     Hybrid Journal   (Followers: 2)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 15)
Chemosensors     Open Access  
ChemPhysChem     Hybrid Journal   (Followers: 8)
ChemPlusChem     Hybrid Journal   (Followers: 2)
ChemTexts     Hybrid Journal  
CHIMIA International Journal for Chemistry     Full-text available via subscription   (Followers: 2)
Chinese Journal of Chemistry     Hybrid Journal   (Followers: 6)
Chinese Journal of Polymer Science     Hybrid Journal   (Followers: 10)
Chromatographia     Hybrid Journal   (Followers: 23)
Chromatography Research International     Open Access   (Followers: 7)
Clay Minerals     Full-text available via subscription   (Followers: 9)
Cogent Chemistry     Open Access  
Colloid and Interface Science Communications     Open Access  
Colloid and Polymer Science     Hybrid Journal   (Followers: 10)
Colloids and Surfaces B: Biointerfaces     Hybrid Journal   (Followers: 8)
Combinatorial Chemistry & High Throughput Screening     Hybrid Journal   (Followers: 3)
Combustion Science and Technology     Hybrid Journal   (Followers: 18)
Comments on Inorganic Chemistry: A Journal of Critical Discussion of the Current Literature     Hybrid Journal   (Followers: 2)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Comprehensive Chemical Kinetics     Full-text available via subscription   (Followers: 2)
Comptes Rendus Chimie     Full-text available via subscription  
Comptes Rendus Physique     Full-text available via subscription   (Followers: 1)
Computational and Theoretical Chemistry     Hybrid Journal   (Followers: 9)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 12)
Computational Chemistry     Open Access   (Followers: 2)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 9)
Coordination Chemistry Reviews     Full-text available via subscription   (Followers: 2)
Copernican Letters     Open Access  
Critical Reviews in Biochemistry and Molecular Biology     Hybrid Journal   (Followers: 5)
Crystal Structure Theory and Applications     Open Access   (Followers: 3)
CrystEngComm     Full-text available via subscription   (Followers: 10)
Current Catalysis     Hybrid Journal   (Followers: 2)
Current Metabolomics     Hybrid Journal   (Followers: 4)
Current Opinion in Colloid & Interface Science     Hybrid Journal   (Followers: 9)
Current Research in Chemistry     Open Access   (Followers: 8)
Current Science     Open Access   (Followers: 48)
Dalton Transactions     Full-text available via subscription   (Followers: 18)
Detection     Open Access   (Followers: 2)
Developments in Geochemistry     Full-text available via subscription   (Followers: 2)
Diamond and Related Materials     Hybrid Journal   (Followers: 11)
Dislocations in Solids     Full-text available via subscription  
Doklady Chemistry     Hybrid Journal  
Drying Technology: An International Journal     Hybrid Journal   (Followers: 3)
Eclética Química     Open Access   (Followers: 1)
Ecological Chemistry and Engineering S     Open Access   (Followers: 4)
Ecotoxicology and Environmental Contamination     Open Access  
Educación Química     Open Access   (Followers: 1)
Education for Chemical Engineers     Hybrid Journal   (Followers: 5)
EJNMMI Radiopharmacy and Chemistry     Open Access  
Elements     Full-text available via subscription   (Followers: 2)
Environmental Chemistry     Hybrid Journal   (Followers: 8)
Environmental Chemistry Letters     Hybrid Journal   (Followers: 4)
Environmental Science & Technology Letters     Full-text available via subscription   (Followers: 5)
Environmental Science : Nano     Partially Free   (Followers: 1)
Environmental Toxicology & Chemistry     Hybrid Journal   (Followers: 19)

        1 2 3 | Last

Journal Cover Applied Surface Science
  [SJR: 0.93]   [H-I: 125]   [26 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0169-4332
   Published by Elsevier Homepage  [3031 journals]
  • DFT study of adsorption and diffusion of atomic hydrogen on metal surfaces
    • Authors: Elizabeth del V. Gómez; Sebastián Amaya-Roncancio; Lucía B. Avalle; Daniel H. Linares; M. Cecilia Gimenez
      Pages: 1 - 8
      Abstract: Publication date: 31 October 2017
      Source:Applied Surface Science, Volume 420
      Author(s): Elizabeth del V. Gómez, Sebastián Amaya-Roncancio, Lucía B. Avalle, Daniel H. Linares, M. Cecilia Gimenez
      An extensive study of adsorption and diffusion of hydrogen atoms on (100) surfaces of fcc Au, Cu, Ag and Pt was performed by means of DFT calculations. Bulk properties of those metals were calculated and compared with previous results. The adsorption distances and energies of the hydrogen atom on top, hollow and bridge sites of the (100) surfaces were calculated in order to elucidate preferential adsorption sites of hydrogen on each metal. All these calculations were done in conjunction with a study of charge distribution. Finally, diffusion of the H atom from the most stable adsorption site to the nearest neighbouring site was studied in order to obtain diffusion barrier and diffusion velocity values. The highest diffusion velocity was found to be v = 6.44 × 10 11 s−1 for the case of Ag, whereas the lowest was v = 1.13 × 10 7 s−1 for Au.

      PubDate: 2017-05-22T10:32:31Z
      DOI: 10.1016/j.apsusc.2017.05.032
      Issue No: Vol. 420 (2017)
       
  • Improving pH sensitivity by field-induced charge regulation in flexible
           biopolymer electrolyte gated oxide transistors
    • Authors: Ning Liu; Lu Gan; Yu Liu; Weijun Gui; Wei Li; Xiaohang Zhang
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Ning Liu, Lu Gan, Yu Liu, Weijun Gui, Wei Li, Xiaohang Zhang
      Electrical manipulation of charged ions in electrolyte-gated transistors is crucial for enhancing the electric-double-layer (EDL) gating effect, thereby improving their sensing abilities. Here, indium-zinc-oxide (IZO) based thin-film-transistors (TFTs) are fabricated on flexible plastic substrate. Acid doped chitosan-based biopolymer electrolyte is used as the gate dielectric, exhibiting an extremely high EDL capacitance. By regulating the dynamic EDL charging process with special gate potential profiles, the EDL gating effect of the chitosan-gated TFT is enhanced, and then resulting in higher pH sensitivities. An extremely high sensitivity of ∼57.8mV/pH close to Nernst limit is achieved when the gate bias of the TFT sensor sweeps at a rate of 10mV/s. Additionally, an enhanced sensitivity of 2630% in terms of current variation with pH range from 11 to 3 is realized when the device is operated in the ion depletion mode with a negative gate bias of −0.7V. Robust ionic modulation is demonstrated in such chitosan-gated sensors. Efficiently driving the charged ions in the chitosan-gated IZO-TFT provides a new route for ultrasensitive, low voltage, and low-cost biochemical sensing technologies.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.248
      Issue No: Vol. 419 (2017)
       
  • Plasma treated polyethylene terephthalate for increased embedment of
           UV-responsive microcapsules
    • Authors: Marija Gorjanc; Miran Mozetič; Gregor Primc; Alenka Vesel; Kosta Spasić; Nevena Puač; Zoran Lj. Petrović; Mateja Kert
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Marija Gorjanc, Miran Mozetič, Gregor Primc, Alenka Vesel, Kosta Spasić, Nevena Puač, Zoran Lj. Petrović, Mateja Kert
      Polyethylene terephthalate (PET) fabric was treated in a late afterglow of plasma created by a microwave (MW) discharge in the surfatron mode, by using oxygen (O2) and ammonia (NH3) gases. The series of treatments using one gas or the combination of both at different treatment times were performed in order to increase the embedment of UV-responsive microcapsules that were deposited onto PET with pad-dry-cure process. Plasma in both gases was characterized by optical emission spectroscopy (OES), which showed substantial dissociation of O2 and NH3 molecules as well as formation of NHx radicals due to the partial dissociation of ammonia molecules. The chemically active species in the plasma afterglow changed the surface properties of PET that were analysed using X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry (ToF–SIMS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and water absorption analysis. The effectiveness of plasma treatment on embedment of UV-responsive microcapsules on PET was evaluated by UV-responsiveness, colour strength and colour depth using reflectance spectroscopy, add-on and air permeability, respectively. Treating PET by O2 afterglow followed by a longer treatment by NH3 afterglow increased the polymers hydrophilicity and concentration of nitrogen-rich functional groups on surface that enabled higher uptake of UV-responsive microcapsules, and consequently better responsiveness of fabric to UV radiation. The add-on of microcapsules was almost 8-times higher and the colour depth increased up to 75% for plasma treated samples.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.177
      Issue No: Vol. 419 (2017)
       
  • Experimental investigation and DFT calculation of different amine/ammonium
           salts adsorption on kaolinite
    • Authors: Jun Chen; Fan-fei Min; Lingyun Liu; Chunfu Liu; Fangqin Lu
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Jun Chen, Fan-fei Min, Lingyun Liu, Chunfu Liu, Fangqin Lu
      The adsorption of four different amine/ammonium salts of DDA (Dodecyl amine), MDA (N-methyldodecyl amine), DMDA (N,N-dimethyldodecyl amine) and DTAC (Dodecyl trimethyl ammonium chloride) on kaolinite particles was investigated in the study through the measurement of contact angles, zeta potentials, aggregation observation, adsorption and sedimentation. The results show that different amine/ammonium salts can adsorb on the kaolinite surface to enhance the hydrophobicity and reduce the electronegativity of kaolinite particle surface, and thus induce a strong hydrophobic aggregation of kaolinite particles which promotes the settlement of kaolinite. To explore the adsorption mechanism of these four amine/ammonium salts on kaolinite surfaces, the adsorptions of DDA+, MDA+, DMDA+ and DTAC+ on kaolinite (001) surface and ( 00 1 ¯ ) surface are calculated with DFT (Density functional theory). The DFT calculation results indicate that different amine/ammonium cations can strongly adsorbed on kaolinite (001) surface and ( 00 1 ¯ ) surface by forming NH⋯O strong hydrogen bonds or CH⋯O weak hydrogen bonds, and there are strongly electrostatic attractions between different amine/ammonium cations and kaolinite surfaces. The main adsorption mechanism of amine/ammonium cations on kaolinite is hydrogen-bond interaction and electrostatic attraction.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.213
      Issue No: Vol. 419 (2017)
       
  • Chemical modification of TiO2 nanotube arrays for label-free optical
           biosensing applications
    • Authors: Monica Terracciano; Vardan Galstyan; Ilaria Rea; Maurizio Casalino; Luca De Stefano; Giorgio Sbervegleri
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Monica Terracciano, Vardan Galstyan, Ilaria Rea, Maurizio Casalino, Luca De Stefano, Giorgio Sbervegleri
      In this study, we have fabricated TiO2 nanotube arrays by the potentiostatic anodic oxidation of Ti foils in fluoride-containing electrolyte and explored them as versatile devices for biosensing applications. TiO2 nanotubes have been chemically modified in order to bind Protein A as a specific target analyte for the optical biosensing. The obtained structures have been characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, water contact angle, fluorescence microscopy, spectroscopic reflectometry and photoluminescence. Investigations show that the prepared TiO2 nanotubes, 2.5μm long and 75nm thick, can be easily and efficiently bio-modified, and the obtained structures are strongly photoluminescent, thus suitable for the label-free biosensing applications in the range of μM, due to their peculiar optical properties.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.029
      Issue No: Vol. 419 (2017)
       
  • Work function engineering of graphene oxide via covalent functionalization
           for organic field-effect transistors
    • Authors: Seulki Ji; Bok Ki Min; Seong K. Kim; Sung Myung; Minseo Kang; Hong-Suk Shin; Wooseok Song; Jungseok Heo; Jongsun Lim; Ki-Seok An; Ill-Young Lee; Sun Sook Lee
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Seulki Ji, Bok Ki Min, Seong K. Kim, Sung Myung, Minseo Kang, Hong-Suk Shin, Wooseok Song, Jungseok Heo, Jongsun Lim, Ki-Seok An, Ill-Young Lee, Sun Sook Lee
      We report a simple method to produce work-function-tuned graphene nanosheets based on the nucleophilic substitution of the epoxy groups on graphene oxide. The electrical property of the graphene oxide is controlled dramatically, which results in the apparent work functions in a broad range between 3.73eV and 5.1eV, by attaching various functional groups on the graphene surface. As a proof of concept, we successfully demonstrated organic field effect transistors incorporating the functionalized graphene nanosheet interlayers. Here, when nanosheets were applied in an organic transistor as the interlayer material between electrodes and organic channel, the device performance was significantly improved. Our approach can be utilized to increase the performance and the flexibility of various advanced carbon-material-based hybrid electrical devices.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.028
      Issue No: Vol. 419 (2017)
       
  • Surface chemical structure and doping characteristics of boron-doped Si
           nanowires fabricated by plasma doping
    • Authors: Seung-Hoon Oh; Jin-Won Ma; Jung Min Bae; Yu-seon Kang; Jae-Pyung Ahn; Hang-Kyu Kang; Jimin Chae; Dongchan Suh; Woobin Song; Sunjung Kim; Mann-Ho Cho
      Pages: 1 - 8
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Seung-Hoon Oh, Jin-Won Ma, Jung Min Bae, Yu-seon Kang, Jae-Pyung Ahn, Hang-Kyu Kang, Jimin Chae, Dongchan Suh, Woobin Song, Sunjung Kim, Mann-Ho Cho
      We investigated the conduction characteristics of plasma-doped Si nanowires (NWs) after various rapid thermal annealing (RTA) times. The plasma doping (PD) process developed a highly-deposited B layer at the NW surface. RTA process controls electrical conductivity by mediating the dopant diffusion from the surface layer. The surface chemical and substitutional states of the B plasma-doped Si NWs were analyzed by x-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. To elucidate the detailed structure of the NWs, we analyzed the change in the optical phonon mode caused by the incorporated B atoms. For this purpose, we examined Fano resonance by the investigation of the asymmetry, line-width, and phonon wavenumber in Raman spectra. The changes in symmetry level of the Raman peak, phonon lifetime, and internal strain were closely related to the number of electrically activated borons, which was drastically increased with RTA time. The change in electrical and optical characterizations related to the doping characteristics of the NWs was investigated using a 4-point probe and terahertz time-domain spectroscopy (THz–TDS). The resistivity of the NWs was 3000 times lower after the annealing process compared to that before the annealing process, which is well consistent with the optical conductivity data. The data provide the potential utility of PD in conformal doping for three-dimensional nanodevices.

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.015
      Issue No: Vol. 419 (2017)
       
  • Interaction of alcohols on monolayer stanane nanosheet: A first-principles
           investigation
    • Authors: V. Nagarajan; R. Chandiramouli
      Pages: 9 - 15
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): V. Nagarajan, R. Chandiramouli
      The electronic and adsorption properties of alcohol vapors such as methanol, ethanol and 1-propanol molecules on 2D stanane nanosheet are investigated through density functional theory method along with passivation of hydrogen and spin-orbit coupling (SOC) effects. The most suitable adsorption sites of alcohol vapor molecules on stanane nanosheet are investigated in atomistic level. The adsorption behavior of alcohol molecules on stanane nanosheet is studied in terms of adsorption energy, density of states spectrum, Mulliken charge transfer and average energy gap variation. The energy band structure and DOS spectrum clearly reveals the adsorption of alcohol vapors on stanane nanostructure. The changes in the energy band gap and density of charge is observed upon adsorption of methanol, ethanol and 1-propanol on p-type stanane base material. The adsorption of 1-propanol molecule on stanane nanosheet is observed to be more rather than ethanol and methanol molecules. The findings on the adsorption properties of alcohol on monolayer stanane nanosheet give the insight on stanane based chemical nanosensor.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.017
      Issue No: Vol. 419 (2017)
       
  • Antimicrobial cotton textiles with robust superhydrophobicity via plasma
           for oily water separation
    • Authors: Ming Zhang; Jiuyin Pang; Wenhui Bao; Wenbo Zhang; He Gao; Chengyu Wang; Junyou Shi; Jian Li
      Pages: 16 - 23
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Ming Zhang, Jiuyin Pang, Wenhui Bao, Wenbo Zhang, He Gao, Chengyu Wang, Junyou Shi, Jian Li
      During these decades, functional materials are facing the severe challenge of their weak surface structure. To solve this problem, plasma technology and spraying technology were utilized to improve the bonding effect between cotton substrates and coating structures. Herein, silica/silver nanoparticles (SiO2/Ag NPs) were prepared and introduced to the nano-/micro- structures on sample surface by spraying technology in the existence of polyurethane adhesive. Then the circles of spraying procedure containing adhesive and SiO2/Ag NPs had been discussed. After further fluorination, the samples still displayed an excellent waterproof property even after abrasion test with sand paper and various washing test by its solvent–acetone or harsh liquids with strong acidity/alkalinity, indicating their robust surfaces structures. More importantly, this product displayed the outstanding performance no matter in laboratory oil/water filtration or the extensive oil leakage and spill. At last, our modification also endowed the cotton sample with great antimicrobial property.

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.008
      Issue No: Vol. 419 (2017)
       
  • Preparation and tribological properties of MoS2/graphene oxide composites
    • Authors: Haojie Song; Biao Wang; Qiang Zhou; Jiaxuan Xiao; Xiaohua Jia
      Pages: 24 - 34
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Haojie Song, Biao Wang, Qiang Zhou, Jiaxuan Xiao, Xiaohua Jia
      A hydrothermal route is developed for the synthesis of MoS2/graphene oxide (GO) composites based on the hydrothermal reduction of Na2MoO4 and GO sheets with l-cysteine. The MoS2/GO composites in improving friction and wear of the sunshine oil on sliding steel surfaces under low or high applied load were demonstrated. In tests with sliding steel surfaces, the sunshine oil that contains small amounts of MoS2/GO composites exhibited the lowest specific friction coefficient and wear rate under all of the sliding conditions. Scanning electron microscopy and energy dispersive spectrometer performed to analyze the wear scar surfaces after friction confirmed that the outstanding lubrication performance of MoS2/GO composites could be attributed to their good dispersion stability and extremely thin laminated structure, which allow the MoS2/GO composites to easily enter the contact area, thereby preventing the rough surfaces from coming into direct contact.

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.022
      Issue No: Vol. 419 (2017)
       
  • Facile preparation of MoS2 based polymer composites via mussel inspired
           chemistry and their high efficiency for removal of organic dyes
    • Authors: Qiang Huang; Meiying Liu; Junyu Chen; Qing Wan; Jianwen Tian; Long Huang; Ruming Jiang; Yuanqing Wen; Xiaoyong Zhang; Yen Wei
      Pages: 35 - 44
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Qiang Huang, Meiying Liu, Junyu Chen, Qing Wan, Jianwen Tian, Long Huang, Ruming Jiang, Yuanqing Wen, Xiaoyong Zhang, Yen Wei
      Molybdenum disulfide (MoS2) is a novel type of two-dimensional nanomaterial, which has attracted great research attention for its excellent physicochemical properties and possible applications. In this work, we prepared a novel MoS2 composite (MoS2-PDOPA) through the self-polymerization of levodopa (DOPA) on the surface of MoS2 under a weak alkaline solution. The obtained samples, including pure MoS2 and MoS2-PDOPA composite were characterized by energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) analyses. The potential environmental applications of MoS2-PDOPA were evaluated by using MoS2-PDOPA as adsorbent to remove methylene blue (MB) from aqueous solution. Batch experiments were carried out to investigate the effect of various operational parameters such as contact time, initial MB concentration, solution pH and temperature on the adsorption of MB by MoS2-PDOPA. According to the adsorption kinetics, isotherms and thermodynamics analysis, the MB adsorption onto MoS2-PDOPA follows the intraparticle diffusion model and Langmuir isotherm model, and the MB adsorption process is spontaneous and endothermic. The maximum adsorption capacity of MoS2-PDOPA is calculated to be 244.03mg/g at 298K. As compared with unmodified MoS2, the adsorption capacity of MoS2-PDOPA is obviously improved. Taken together, we developed a facile method to prepare MoS2-PDOPA composites based on mussel inspired chemistry. The resultant composites could be utilized as efficient adsorbents with great potential for environmental adsorption applications.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.006
      Issue No: Vol. 419 (2017)
       
  • Structures and stabilities of small Co clusters on a Cu(111) surface: A
           theoretical study
    • Authors: R.Z. Huang; C. Chen; C.M. Li; C.H. Jiang; R.J. Zhang; Y. Gao
      Pages: 45 - 51
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): R.Z. Huang, C. Chen, C.M. Li, C.H. Jiang, R.J. Zhang, Y. Gao
      Structures and relative stabilities of small Con clusters (n=1–12) on a Cu(111) surface are studied using molecular dynamics simulations. It is shown that the supported clusters are all in two-dimensional island structures of the edges forming square microfacets (A step) and/or triangular microfacets (B step) with the substrate. For non-magic-number clusters, the lowest energy structures are the ones of the edges with more A steps and the most unstable structures are the ones of the edges with only A steps or B steps due to the lattice mismatch of the Con/Cu(111) system. Magic number clusters are truncated triangular or elongated shapes with a closed atomic shell and maximum nearest-neighbor bonds. In addition, the anomalous mobility is found for Co3 and Co6 clusters in the diffusion processes of these clusters. The concerted translation and rotation movements are responsible for their special diffusion behaviors.

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.014
      Issue No: Vol. 419 (2017)
       
  • Modelling the impact, spreading and freezing of a water droplet on
           horizontal and inclined superhydrophobic cooled surfaces
    • Authors: Yina Yao; Cong Li; Hui Zhang; Rui Yang
      Pages: 52 - 62
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Yina Yao, Cong Li, Hui Zhang, Rui Yang
      It is quite important to clearly understand the dynamic and freezing process of water droplets impacting a cold substrate for the prevention of ice accretion. In this study, a three-dimensional model including an extended phase change method was developed on OpenFOAM platform to simulate the impact, spreading and freezing of a water droplet on a cooled solid substrate. Both normal and oblique impact conditions were studied numerically. The evolution of the droplet shape and dynamic characteristics such as area ratio and spread factor were compared between numerical and experimental results. Good agreements were obtained. The effects of Weber number and Ohnersorge number on the oblique impact and freezing process were investigated. A regime map which depicts the different responses of droplets as a function of normal Weber number and Ohnesorge number was obtained. Moreover, the impact, spreading and freezing behaviour of water droplets were analyzed in detail from the numerical results.

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.04.085
      Issue No: Vol. 419 (2017)
       
  • Novel transparent conductor with enhanced conductivity: hybrid of silver
           nanowires and dual-doped graphene
    • Authors: Hiesang Sohn; Yun Sung Woo; Weonho Shin; Dong-Jin Yun; Taek Lee; Felix Sunjoo Kim; Jinyoung Hwang
      Pages: 63 - 69
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Hiesang Sohn, Yun Sung Woo, Weonho Shin, Dong-Jin Yun, Taek Lee, Felix Sunjoo Kim, Jinyoung Hwang
      We present hybrid transparent conducting films based on silver nanowires (Ag NWs) and doped graphene through novel dual co-doping method by applying various dopants (HNO3 or Au for p-doping and N2H4 for n-doping) on top and bottom sides of graphene. We systematically investigated the effect of dual-doping on their surface as well as electrical and optical properties of graphene and Ag NW/graphene hybrid films through the combination study with various dopant types (p/p, p/n, n/p, and n/n). We found that the p/p-type dual-doped (p-type dopant: HNO3) graphene and its hybrid formation with Ag NWs appeared to be the most effective in enhancing the electrical properties of conductor (doped graphene with ΔR/R 0 =84% and Ag NW/doped graphene hybrid with ΔR/R 0 =62%), demonstrating doped monolayer graphene with high optical transmittance (TT =97.4%), and sheet resistance (R s =188Ω/sq.). We also note that dual-doping improved such electrical properties without any significant debilitation of optical transparency of conductors (doped graphene with ΔTT =0.1% and Ag NW/doped graphene hybrid with ΔTT =0.4%). In addition, the enhanced conductivity of p-type dual-doped graphene allows a hybrid system to form co-percolating network in which Ag NWs can form a secondary conductive path at grain boundaries of polycrystalline graphene.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.04.129
      Issue No: Vol. 419 (2017)
       
  • Fabrication and investigation of MnFe2O4/MWCNTs nanocomposite by
           hydrothermal technique and adsorption of cationic and anionic dyes
    • Authors: Leila Asadi Kafshgari; Mohsen Ghorbani; Asghar Azizi
      Pages: 70 - 83
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Leila Asadi Kafshgari, Mohsen Ghorbani, Asghar Azizi
      In present study, MnFe2O4/MWCNT nanocomposite synthesized using the hydrothermal technique and has been used for removal of DR16 and Y40 dyes from aqueous solutions. The characteristics results of FTIR, XRD, FESEM and TEM indicated that the nanoadsorbent was successfully fabricated. Magnetic sensitivity results demonstrated that the nanoparticles with saturation magnetization (Ms ) value of 8.93emug−1 would have a fast magnetic response. The performance of adsorption was investigated in a batch reactor employing parameters expected to affect the maximum adsorption capacity (qm ) such as pH, contact time, initial dye concentration and temperature. The highest sorption capacities of DR16 and Y40 after 300min at 328K were found to be 607.79mg/g and 280mg/g at pH of 2 and 6, respectively. The adsorption behavior over the time was assessed through pseudo-first, pseudo-second and Weber–Morris intra particle diffusion models. It was found that the pseudo-second order model gave the best agreement to the experimental data. Adsorbate-adsorbent interactions as a function of temperature was evaluated by Langmuir, Freundlich, Temkin and Sips isotherm models from which Sips isotherm had the highest consistency with the experimental data. Thermodynamic parameters including ΔG°, ΔS° and ΔH° were determined over the temperature range of 298–328K. The results revealed that the adsorption reaction of DR16 onto MnFe2O4/MWCNT was spontaneous and exothermic, whilst the sorption process of Y40 was spontaneous and endothermic. In addition, activation energy values implied that the removal process of DR16 and Y40 was physical in nature.

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.019
      Issue No: Vol. 419 (2017)
       
  • Excellent ammonia sensing performance of gas sensor based on
           graphene/titanium dioxide hybrid with improved morphology
    • Authors: Zongbiao Ye; Huiling Tai; Rui Guo; Zhen Yuan; Chunhua Liu; Yuanjie Su; Zhi Chen; Yadong Jiang
      Pages: 84 - 90
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Zongbiao Ye, Huiling Tai, Rui Guo, Zhen Yuan, Chunhua Liu, Yuanjie Su, Zhi Chen, Yadong Jiang
      Reduced graphene oxide (rGO)-titanium dioxide (TiO2) hybrid material has been prepared through a facile hydrothermal method for ammonia detection at room temperature. The combined characterizations including X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV–vis) and scanning electron microscopy (SEM) indicated the successful formation of rGO-TiO2 hybrid. It also showed that the morphology of graphene sheets was greatly improved to become porous and undulating due to introduction of synthetic titanium dioxide. Accordingly, the hybrid-based sensor showed much more excellent sensing properties in comparison to that of bare graphene film sensor. The mechanism for the improvement could be ascribed to the synergetic effect between rGO sheets and TiO2 nanospheres, specifically, the enrichment of active adsorption sites on account of the supporting function of TiO2 nanospheres.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.03.251
      Issue No: Vol. 419 (2017)
       
  • Atom redistribution and multilayer structure in NiTi shape memory alloy
           induced by high energy proton irradiation
    • Authors: Haizhen Wang; Xiaoyang Yi; Yingying Zhu; Yongkui Yin; Yuan Gao; Wei Cai; Zhiyong Gao
      Pages: 91 - 97
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Haizhen Wang, Xiaoyang Yi, Yingying Zhu, Yongkui Yin, Yuan Gao, Wei Cai, Zhiyong Gao
      The element distribution and surface microstructure in NiTi shape memory alloys exposed to 3MeV proton irradiation were investigated. Redistribution of the alloying element and a clearly visible multilayer structure consisting of three layers were observed on the surface of NiTi shape memory alloys after proton irradiation. The outermost layer consists primarily of a columnar-like TiH2 phase with a tetragonal structure, and the internal layer is primarily comprised of a bcc austenite phase. In addition, the Ti2Ni phase, with an fcc structure, serves as the transition layer between the outermost and internal layer. The above-mentioned phenomenon is attributed to the preferential sputtering of high energy protons and segregation induced by irradiation.

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.021
      Issue No: Vol. 419 (2017)
       
  • Active and efficient Co-N/C catalysts derived from cobalt porphyrin for
           selective oxidation of alkylaromatics
    • Authors: Yuan Chen; Shanshan Jie; Congqiang Yang; Zhigang Liu
      Pages: 98 - 106
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Yuan Chen, Shanshan Jie, Congqiang Yang, Zhigang Liu
      The development of highly active and efficient heterogeneous catalytic oxidation systems has become an attractive research area. In this study, nano cobalt-coordinated nitrogen-doped carbon catalysts (Co-N/C), which were prepared by the pyrolysis of cobalt porphyrin supported on carbon black precursor, were used as highly active catalysts for the oxidation of hydrocarbons with tert-butyl hydroperoxide as the oxidant. The results showed that the catalyst was efficient in the selective oxidation of a variety of saturated (including primary, secondary, and tertiary) CH bonds. The catalyst displayed the best catalytic performance, which was comparable to those for previously reported metal oxide catalysts and even better. The resultant Co-N/C catalysts were characterized in detail by XRD, nitrogen adsorption/desorption isotherms, TEM, SEM and XPS. The homogeneous distribution of the Co species and interactions between the Co-N species could improve the synergistic effect between the CoO, CoN and NC species, which led to their excellent catalytic performance. A first order kinetics was observed for the reaction with the apparent activation energy for ethylbenzene oxidation was 22.2±2.1kJmol−1.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.04.246
      Issue No: Vol. 419 (2017)
       
  • Initial and steady-state Ru growth by atomic layer deposition studied by
           in situ Angle Resolved X-ray Photoelectron Spectroscopy
    • Authors: Konstantin V. Egorov; Yury Yu. Lebedinskii; Anatoly A. Soloviev; Anastasia A. Chouprik; Alexander Yu. Azarov; Andrey M. Markeev
      Pages: 107 - 113
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Konstantin V. Egorov, Yury Yu. Lebedinskii, Anatoly A. Soloviev, Anastasia A. Chouprik, Alexander Yu. Azarov, Andrey M. Markeev
      The clear substrate-dependent growth and delayed film continuity are essential challenges of Ru atomic layer deposition (ALD) demanding adequate and versatile approaches for their study. Here, we report on the application of in situ Angle Resolved X-ray Phototelectron Spectroscopy (ARXPS) for investigation of initial and steady-state ALD growth of Ru using Ru(EtCp)2 and O2 as precursors. Using ARXPS surface analysis technique we determine such parameters of Ru ALD initial growth as incubation period, fractional coverage and the thickness of islands/film depending on the substrate chemical state, governed by the presence/absence of NH3/Ar plasma pretreatment. It was demonstrated that NH3/Ar plasma pretreatment allows to obtain the lowest incubation period (∼7 ALD cycles) resulting in a continuous ultrathin (∼20Å) and smooth Ru films after 70 ALD cycles. In situ XPS at UHV was used at steady state Ru growth for analysis of half-cycle reactions that revealed formation of RuOx (x≈2) layer with thickness of ∼8Å after O2 pulse (first half-cycle). It was also shown that oxygen of RuOx layer combusts Ru(EtCp)2 ligands in the second half-cycle reaction and the observed Ru growth of ∼0.34Å per cycle is in a good agreement with the amount of oxygen in the RuOx layer.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.010
      Issue No: Vol. 419 (2017)
       
  • A theoretical study on the role of water and its derivatives in acetic
           acid steam reforming on Ni(111)
    • Authors: Zhen-Yi Du; Yan-Xiong Ran; Yun-Peng Guo; Jie Feng; Wen-Ying Li
      Pages: 114 - 125
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Zhen-Yi Du, Yan-Xiong Ran, Yun-Peng Guo, Jie Feng, Wen-Ying Li
      Catalytic steam reforming of acetic acid can be divided into two steps, i.e. acetic acid decomposition followed by water gas shift. While theoretical studies have been devoted to these two individual reactions, the role of water and its derivatives in the reforming process, especially in CH3COOH decomposition, remains largely unknown. In this study, a thorough investigation of the effects of the solvent water and its derived O*/OH* species on some key dehydrogenation steps on Ni(111) is carried out using density functional theory. The involved dehydrogenation species include O−H bond scission species H2O*, CH3COOH*, trans-COOH* and C−H bond scission species CH3CO*, CH3C*, CH2C*. The results show that the pre-adsorbed O*, OH*, and H2O* species not only affect the adsorption stability of these species, but also influence their dehydrogenation reactivity. O* and OH* species can both enhance the O−H bond scission, and the promotional effect of O* is superior to OH*. Nevertheless, H-abstraction from C−H bond by O* and OH* are both hindered except for CH3CO* dehydrogenation in the presence of OH*. Furthermore, the solvent water notably weakens O−H bonds, yet exhibits negligible effect on the C−H bond breakage. Analogously, the solvent effect of CH3COOH* on O−H bond scission is also investigated.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.003
      Issue No: Vol. 419 (2017)
       
  • Characterization of SrTiO3 target doped with Co ions, SrCoxTi1−xO3−δ,
           and their thin films prepared by pulsed laser ablation (PLA) in water for
           visible light response
    • Authors: Fumihiko Ichihara; Yuma Murata; Hiroshi Ono; Cheow-keong Choo; Katsumi Tanaka
      Pages: 126 - 137
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Fumihiko Ichihara, Yuma Murata, Hiroshi Ono, Cheow-keong Choo, Katsumi Tanaka
      SrTiO3 (STO) and Co-doped SrTiO3 (Co-STO) sintered targets were synthesized and were Ar+ sputtered to elucidate the charge compensation effect between Sr, Ti and Co cations following the reduction by oxygen desorption. Following exposure of the Ar+-sputtered target to the air, charge transfer reactions occurred among Co2+, Ti3+, O2− and Sr2+ species which were studied by their XPS spectra. Pulsed laser ablation (PLA) of these targets was carried out in water to prepare the nanoparticles which could be supplied to the thin films with much higher surface reactivity expected for photocatalytic reactions. The roles of Co ions were studied for the stoichiometry and crystallinity of the nanoparticles which constituted the thin films. Photo-degradation of methylene blue was carried out on the PLA thin films under very weak visible light at 460nm. The PLA thin films showed the photocatalytic activities, which were enhanced by the presence of Co ions. Such the effect of Co ions was considered from viewpoint of the d-d transition and the charge-transfer between Co ions and the ligand oxygen.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.130
      Issue No: Vol. 419 (2017)
       
  • Effect of graphene oxide and fluorinated polymeric chains incorporated in
           a multilayered sol-gel nanocoating for the design of corrosion resistant
           and hydrophobic surfaces
    • Authors: Juan Deyo Maeztu; Pedro J. Rivero; Carlos Berlanga; David M. Bastidas; José F. Palacio; Rafael Rodriguez
      Pages: 138 - 149
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Juan Deyo Maeztu, Pedro J. Rivero, Carlos Berlanga, David M. Bastidas, José F. Palacio, Rafael Rodriguez
      In this work, it is proposed a multilayer sol-gel nanocoating onto aluminum alloys for the fabrication of new surfaces with a dual property of hydrophobicity and corrosion resistance. A study of two experimental variables such as number of dips and thermal treatment has been performed in order to have a better optimization of the nanocoatings with the desired corrosion resistance properties. A combination of a hybrid sol-gel matrix to host the corrosion inhibitor (graphene oxide) with a simple sol-gel matrix to provide hydrophobic properties (fluorinated polymeric chains) is presented. The effect of the thermal treatment is also analyzed for the formation of highly cross-linked sol-gel matrices with an improvement in the mechanical and hydrophobic properties. The surface and coating morphology have been determined by using atomic force microscopy, profilometry and scanning electron microscopy; whereas the hydrophobicity was determined by measurements of the water contact angle. Finally, the corrosion resistance of the sol-gel coatings has been determined using potentiodynamic polarization and electrochemical impedance spectroscopy. These results open up a new perspective for the design and implementation of novel coatings in applications of high performance.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.043
      Issue No: Vol. 419 (2017)
       
  • Mechanism of surface morphology in electron beam melting of Ti6Al4V based
           on computational flow patterns
    • Authors: Wenjun Ge; Sangwoo Han; Yuchao Fang; Jason Cheon; Suck Joo Na
      Pages: 150 - 158
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Wenjun Ge, Sangwoo Han, Yuchao Fang, Jason Cheon, Suck Joo Na
      In this study, a 3D numerical model was proposed that uses the computational fluid dynamics (CFD) method to investigate molten pool formation in electron beam melting under different process parameters. Electron beam ray tracking was used to determine energy deposition in the powder bed model. The melt tracks obtained in this study can be divided into three categories: a balling pattern, distortion pattern and straight pattern. The 3D mesoscale model revealed that it is possible to obtain different molten pool temperature distributions, flow patterns and top surface morphologies using different process parameters. Detailed analysis was performed on the formation mechanism of both the balling defect and distortion pattern. The simulation results of the top surface morphology were also compared with experimental results and showed good agreement.

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.033
      Issue No: Vol. 419 (2017)
       
  • Enhanced visible-light photocatalytic activity of ZnS/g-C3N4 type-II
           heterojunction nanocomposites synthesized with atomic layer deposition
    • Authors: Won Jun Kim; Eunyong Jang; Tae Joo Park
      Pages: 159 - 164
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Won Jun Kim, Eunyong Jang, Tae Joo Park
      Atomic layer deposition (ALD) is proposed to synthesize ZnS-coated g-C3N4 photocatalysts which form an effective heterojunction for charge separation by reducing carrier recombination. It also, enables decrease in processing time from few days to several hours and circumvents collection process of synthesized powder which leads improvement in the productivity. In ZnS/g-C3N4 heterojunction composite, ZnS quantum-dots are uniformly distributed on g-C3N4 rather than conformal ZnS film due to hydrophobic nature of g-C3N4 surface. Photocatalytic activity of the ZnS/g-C3N4 heterojunction composites is enhanced up to 2.6 times compared to pristine g-C3N4 by tailoring ZnS ALD cycles. A range of ALD cycles from 2 to 50 have applied, out of which 5 cycles are found optimum for best efficiency, above and below 5 cycles it becomes either saturated or less potent, respectively.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.05.012
      Issue No: Vol. 419 (2017)
       
  • Electrochemical synthesis of three-dimensional porous networks of nickel
           with different micro-nano structures for the fabrication of Ni/MnOx
           nanocomposites with enhanced supercapacitive performance
    • Authors: H. Ashassi-Sorkhabi; P. La’le Badakhshan
      Pages: 165 - 176
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): H. Ashassi-Sorkhabi, P. La’le Badakhshan
      We have electrochemically synthesized 3D-porous Ni/MnOx nanocomposites for supercapacitor applications. 3D porous micro-nanostructured networks of nickel were prepared using hydrogen bubbles as a dynamic template at different deposition potentials and times. The prepared nickel films were used then as 3D-porous substrates for anodic deposition of manganese oxide nanostructures. The effects of deposition potential and time on the structure of the prepared nickel scaffolds and especially on the capacitive behavior of the subsequently fabricated 3D-porous Ni/MnOx nanocomposites were investigated. The results show that the areal capacitance and especially the rate capability of prepared Ni/MnOx nanocomposites have improved with increasing the deposition potential or optimizing the deposition time of nickel films in the nanocomposites. The prepared 3D-porous Ni/MnOx nanocomposite, in which the nickel scaffold has been deposited at the potential of −6V and duration of 90s, show almost the highest capacitive performance among all other prepared nanocomposites. This prepared nanocomposite, with the loading mass of 1.65mgcm−2, showed the high areal capacitance of 654mFcm−2 (396.4Fg−1) at the current density of 0.5mAcm−2 (0.3Ag−1) in 0.5M Na2SO4 solution. This nanocomposite also revealed the highest rate capability; the capacitance retention is about 63% (412mFcm−2) with increasing the discharge rate from 0.5 to 20mAcm−2, which is almost twice the observed amount of retention when the deposition potential of Ni films was −2V (31%) or their deposition time was 45s (34%). In addition, the prepared nanocomposite exhibited an outstanding cycling stability. The capacitance retention was about 98.91% after performing 2000 charge-discharge cycles.
      Graphical abstract image

      PubDate: 2017-05-11T23:20:40Z
      DOI: 10.1016/j.apsusc.2017.04.254
      Issue No: Vol. 419 (2017)
       
  • Surface modification of polyamide reverse osmosis membrane with sulfonated
           polyvinyl alcohol for antifouling
    • Authors: Yang Zhang; Ying Wan; Guoyuan Pan; Hongwei Shi; Hao Yan; Jian Xu; Min Guo; Zhe Wang; Yiqun Liu
      Pages: 177 - 187
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Yang Zhang, Ying Wan, Guoyuan Pan, Hongwei Shi, Hao Yan, Jian Xu, Min Guo, Zhe Wang, Yiqun Liu
      Sulfonated polyvinyl alcohol (SPVA) was synthesized by esterification reaction of PVA and sulfuric acid, and the structure was characterized by FTIR spectrum. Then a series of TFC membranes modified with cross-linked SPVA layer were fabricated by coating method, with glutaraldehyde as the cross-linker. The resulting TFC membranes were characterized by SEM, AFM, ATR-FTIR, XPS, streaming potential as well as static contact angle. The TFC membranes modified with SPVA exhibit decreased water flux and increased NaCl rejection with SPVA content increasing in the coating aqueous solution. The optimal PA-SPVA-0.5 sample exhibits a NaCl rejection of 99.18%, which is higher than the 98.32% of the virgin PA membrane. More importantly, the PA-SPVA-0.5 membrane shows much more improved fouling resistance to BSA and CTAB than virgin PA membrane and the TFC sample modified with PVA (PA-PVA-0.5). PA-SPVA-0.5 membrane loses about 8% of the initial flux after BSA fouling for 12h, which is much lower than those of virgin PA and PA-PVA-0.5 membranes (28% and 15%, respectively). Furthermore, the flux recovery of the PA-SPVA-0.5 membrane reaches above 95% after cleaning. Thus, the PA-SPVA-0.5 membrane shows potential applications as antifouling RO membrane for desalination and purification.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.047
      Issue No: Vol. 419 (2017)
       
  • Surface grafting of zwitterionic polymers onto dye doped AIE-active
           luminescent silica nanoparticles through surface-initiated ATRP for
           biological imaging applications
    • Authors: Liucheng Mao; Xinhua Liu; Meiying Liu; Long Huang; Dazhuang Xu; Ruming Jiang; Qiang Huang; Yuanqing Wen; Xiaoyong Zhang; Yen Wei
      Pages: 188 - 196
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Liucheng Mao, Xinhua Liu, Meiying Liu, Long Huang, Dazhuang Xu, Ruming Jiang, Qiang Huang, Yuanqing Wen, Xiaoyong Zhang, Yen Wei
      Aggregation-induced emission (AIE) dyes have recently been intensively explored for biological imaging applications owing to their outstanding optical feature as compared with conventional organic dyes. The AIE-active luminescent silica nanoparticles (LSNPs) are expected to combine the advantages both of silica nanoparticles and AIE-active dyes. Although the AIE-active LSNPs have been prepared previously, surface modification of these AIE-active LSNPs with functional polymers has not been reported thus far. In this work, we reported a rather facile and general strategy for preparation of polymers functionalized AIE-active LSNPs through the surface-initiated atom transfer radical polymerization (ATRP). The AIE-active LSNPs were fabricated via direct encapsulation of AIE-active dye into silica nanoparticles through a non-covalent modified Stöber method. The ATRP initiator was subsequently immobilized onto these AIE-active LSNPs through amidation reaction between 3-aminopropyl-triethoxy-silane and 2-bromoisobutyryl bromide. Finally, the zwitterionic 2-(methacryloyloxy)ethyl phosphorylcholine (MPC) was selected as model monomer and grafted onto MSNs through ATRP. The characterization results suggested that LSNPs can be successfully modified with poly(MPC) through surface-initiated ATRP. The biological evaluation results demonstrated that the final SNPs-AIE-pMPC composites possess low cytotoxicity, desirable optical properties and great potential for biological imaging. Taken together, we demonstrated that AIE-active LSNPs can be fabricated and surface modified with functional polymers to endow novel functions and better performance for biomedical applications. More importantly, this strategy developed in this work could also be extended for fabrication of many other LSNPs polymer composites owing to the good monomer adoptability of ATRP.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.041
      Issue No: Vol. 419 (2017)
       
  • Anticorrosion performance of chromized coating prepared by pack
           cementation in simulated solution with H2S and CO2
    • Authors: Qin-Ying Wang; Yashar Behnamian; Hong Luo; Xian-Zong Wang; Michael Leitch; Hongbo Zeng; Jing-Li Luo
      Pages: 197 - 205
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Qin-Ying Wang, Yashar Behnamian, Hong Luo, Xian-Zong Wang, Michael Leitch, Hongbo Zeng, Jing-Li Luo
      A hash service environment containing H2S and CO2 in oil industry usually causes corrosion of carbon steel. In this study, the chromized coatings with different deposited time were prepared on the surface of carbon steel by the method of pack cementation to enhance its corrosion resistance. Then the microstructure, hardness, corrosion resistance as well as the semiconductor behavior of coatings in the simulated solution with saturated H2S and CO2 were investigated. The results show that the content of Cr in coating was increased by prolonging deposited time, and both chromium carbides and chromium nitrides were formed. Furthermore, coatings display higher polarization resistance, Rp, than that of the substrate, indicating a higher resistance to charge transfer on coating surface. The corrosion rates of coatings with different deposited time were significantly lower than that of substrate. Chemical analysis showed the formation of heavy sulfides on the surface of substrates after corrosion, while the least corrosion products were detected on the surface of coating with deposited time of 12h. Mott-Schottky results indicated that coating of 12h displayed less defects than the other two coatings with deposited time of 4h and 8h, which will be beneficial to improve corrosion resistance. The investigation showed that chromized coatings exhibited high corrosion resistance and owned a potential application in oil industry for corrosion prevention.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.001
      Issue No: Vol. 419 (2017)
       
  • Hydrophobic surface modification of TiO2 nanoparticles for production of
           acrylonitrile-styrene-acrylate terpolymer/TiO2 composited cool materials
    • Authors: Yanli Qi; Bo Xiang; Wubin Tan; Jun Zhang
      Pages: 213 - 223
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Yanli Qi, Bo Xiang, Wubin Tan, Jun Zhang
      Hydrophobic surface modification of TiO2 was conducted for production of acrylonitrile-styrene-acrylate (ASA) terpolymer/titanium dioxide (TiO2) composited cool materials. Different amount of 3-methacryloxypropyl-trimethoxysilane (MPS) was employed to change hydrophilic surface of TiO2 into hydrophobic surface. The hydrophobic organosilane chains were successfully grafted onto TiO2 through SiOTi bonds, which were verified by Fourier transformed infrared spectra and X-ray photoelectron spectroscopy. The water contact angle of the sample added with TiO2 modified by 5wt% MPS increased from 86° to 113°. Besides, all the ASA/TiO2 composites showed significant improvement in both solar reflectance and cooling property. The reflectance of the composites throughout the near infrared (NIR) region and the whole solar wavelength is increased by 113.92% and 43.35% compared with pristine ASA resin. Simultaneously, significant drop in temperature demonstrates excellent cooling property. A maximum decrease approach to 27°C was observed in indoor temperature test, while a decrease around 9°C tested outdoors is achieved.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.234
      Issue No: Vol. 419 (2017)
       
  • Improving amphiphilic polypropylenes by grafting poly(vinylpyrrolidone)
           and poly(ethylene glycol) methacrylate segments on a polypropylene
           microporous membrane
    • Authors: Huirong Chen; Wenzhong Ma; Yanping Xia; Yi Gu; Zheng Cao; Chunlin Liu; Haicun Yang; Shengxi Tao; Haoran Geng; Guoliang Tao; Hideto Matsuyama
      Pages: 259 - 268
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Huirong Chen, Wenzhong Ma, Yanping Xia, Yi Gu, Zheng Cao, Chunlin Liu, Haicun Yang, Shengxi Tao, Haoran Geng, Guoliang Tao, Hideto Matsuyama
      An amphiphilic polypropylene-g-poly[vinylpyrrolidone-co-poly(ethylene glycol) methacrylate] (PP-g-(NVP-co-PEGMA)) modifier was prepared by melt grafting polymerization using N-vinyl pyrrolidone (NVP) as the grafting monomer and poly(ethylene glycol) (PEGMA) as the comonomer. Fourier transform infrared (FTIR) spectroscopy and elemental analysis showed that the hydrophilic branched chains (NVP-g-PEGMA) were successfully grafted to polypropylene (PP) macromolecular chains. The largest NVP grafting degree for PP-g-(NVP-co-PEGMA) (up to 20.4%) was obtained when the mass ratio of PP/NVP/PEGMA was 100/30/15. Hydrophilic PP microporous membranes were prepared by stretching cast films of PP/PP-g-(NVP-co-PEGMA) blends. The membrane thermostability (including the modifier) was better than that of the pure PP membrane with a similar surface pore structure. The porosity of the modified membranes was only slightly lower than that of the pure PP membranes. Contact angle measurements were used to examine the hydrophilicity of the membranes. The water contact angle of the membranes decreased when PP-g-(NVP-co-PEGMA) was added, and the minimum contact angle was 64.5°. Therefore, this work provides a good application for stretched hydrophilic PP membrane fabrication.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.023
      Issue No: Vol. 419 (2017)
       
  • Improving photo-stability and charge transport properties of Cu2O/CuO for
           photo-electrochemical water splitting using alternate layers of WO3 or
           CuWO4 produced by the same route
    • Authors: Soolmaz Jamali; Ahmad Moshaii
      Pages: 269 - 276
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Soolmaz Jamali, Ahmad Moshaii
      We report on remarkable stability improvement of Cu2O nanostructured thin films by deposition of a thin layer of WO3 or CuWO4 as an efficient photocathode for photoelectrochemical (PEC) water splitting. The modification of Cu2O thin films by WO3 or CuWO4 has been carried out by the same synthesization process just with different annealing temperatures. It is shown that the Cu2O nanostructures can partly be converted to CuO during the annealing process. The amount of conversion of Cu2O to CuO depends on the annealing temperature and its duration. The best photocurrent densities of −1.9 and −2.8mA/cm2 have been obtained from the Cu2O/CuO/WO3 and CuO/CuWO4 heterostructures, respectively, which are at least 3 and 4 times higher than that of the bare Cu2O (−0.6mA/cm2). Also, the stability improvement results show that the remaining photocurrent after 40min for the WO3 or CuWO4 modifications reach to about 40% and 61%, which in comparison to the bare Cu2O (10%) are 4 and 6 times better, respectively. By performing various characterizations, it is shown that the improved photoresponse of the modified heterostructures is originated from more absorption of the light and consequently more photocurrent generation in the modified samples in addition to the enhanced charge transfer at the interface of photocathode/electrolyte.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.228
      Issue No: Vol. 419 (2017)
       
  • Flexible freestanding sandwich type ZnO/rGO/ZnO electrode for wearable
           supercapacitor
    • Authors: Mina Ghorbani; Mohammad Reza Golobostanfard; Hossein Abdizadeh
      Pages: 277 - 285
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Mina Ghorbani, Mohammad Reza Golobostanfard, Hossein Abdizadeh
      The development of flexible supercapacitors with high energy and power density as one of the main components of wearable electronics is in an enormous interest. In this report, a unique flexible electrode based on freestanding sandwich type ZnO/rGO/ZnO paper is fabricated by a simple low cost sol-gel method for utilizing in flexible supercapacitor. ZnO layers are deposited on both sides of rGO paper which is prepared by a modified Hummer’s method and evaporation induced assembly. The uniform and densely packed ZnO layers are formed on graphene oxide paper and the paper is simultaneously reduced. Structural analysis reveals the formation of ZnO thin films on both sides of rGO nanosheets, which leads to the sandwich architecture. Also, the effect of ZnO sol-gel process parameters on microstructure of sandwich paper are investigated and the most suitable condition for highest supercapacity performance is the solvent of 1-PrOH, stabilizer of TeA, sol concentration of 0.2M, deposition speed of 30mmmin−1, and 10 deposited layers. The results of electrochemical impedance spectroscopy, galvanostatic charge-discharge, and cyclic voltammetry confirm that the incorporation of ZnO improves the capacitive performance of rGO electrode. Moreover, ZnO/rGO/ZnO flexible electrode exhibits suitable capacitance value of 60.63Fg−1 at scan rate of 5mV/s.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.060
      Issue No: Vol. 419 (2017)
       
  • Structural, electronic and magnetic properties of the MnGa(111)-1×2 and
           2×2 reconstructions: Spin polarized first principles total energy
           calculations
    • Authors: Reyes Garcia-Diaz; Gregorio H. Cocoletzi; Andrada-Oana Mandru; Kangkang Wang; Arthur R. Smith; Noboru Takeuchi
      Pages: 286 - 293
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Reyes Garcia-Diaz, Gregorio H. Cocoletzi, Andrada-Oana Mandru, Kangkang Wang, Arthur R. Smith, Noboru Takeuchi
      Using first principles total energy calculations within the periodic spin polarized density functional theory, we have investigated the structural, electronic, and magnetic properties of manganese gallium (MnGa) alloys. Specifically, we explore the MnGa(111)-1×2 and 2×2 reconstructions. The surface formation energies reveal that selected substitutions occur under Mn (Ga) rich growth conditions. Structures with top layers missing all Mn (Ga) atoms and two layers deep substitutions are also investigated. However, the formation energy shows that these structures are less favorable. For the stable structures, the magnetic properties per layer are proportional to the Mn:Ga ratio. Also, the density of states shows that the MnGa surfaces are metallic. The projected density of states shows that the electronic states in the vicinity of the Fermi level are due mainly to the manganese 3d orbitals. However charge density plots reveal that Mn 3d electrons are closer to the nucleus than Ga sp electrons. Consequently, experimental scanning tunneling microscopy images reveal periodically-arranged bright features, corresponding to the Ga atoms.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.241
      Issue No: Vol. 419 (2017)
       
  • Logarithmic contact time dependence of adhesion force and its dominant
           role among the effects of AFM experimental parameters under low humidity
    • Authors: Tianmao Lai; Yonggang Meng
      Pages: 294 - 304
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Tianmao Lai, Yonggang Meng
      The influences of contact time, normal load, piezo velocity, and measurement number of times on the adhesion force between two silicon surfaces were studied with an atomic force microscope (AFM) at low humidity (17–15%). Results show that the adhesion force is time-dependent and increases logarithmically with contact time until saturation is reached, which is related with the growing size of a water bridge between them. The contact time plays a dominant role among these parameters. The adhesion forces with different normal loads and piezo velocities can be quantitatively obtained just by figuring out the length of contact time, provided that the contact time dependence is known. The time-dependent adhesion force with repeated contacts at one location usually increases first sharply and then slowly with measurement number of times until saturation is reached, which is in accordance with the contact time dependence. The behavior of the adhesion force with repeated contacts can be adjusted by the lengths of contact time and non-contact time. These results may help facilitate the anti-adhesion design of silicon-based microscale systems working under low humidity.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.220
      Issue No: Vol. 419 (2017)
       
  • Reversible, long-term passivation of Ge(001) by a Ba-induced incorporated
           phase
    • Authors: W. Koczorowski; T. Grzela; A. Puchalska; L. Jurczyszyn; R. Czajka; M.W. Radny
      Pages: 305 - 310
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): W. Koczorowski, T. Grzela, A. Puchalska, L. Jurczyszyn, R. Czajka, M.W. Radny
      Thermal stability and passivation properties of Ba-induced incorporation phase on Ge(001) under ultra-high vacuum (UHV) conditions are investigated using scanning tunneling microscope (STM). We show that the generic c(4×2) reconstruction of Ge(001) can be easily reinstated in the Ba/Ge(001) sample, stored for more than 40days under UHV and room temperature conditions, just by thermal annealing at 1070 K under UHV. Our data implies that this process occurs predominantly via temperature assisted desorption of Ba adatoms from the on-top phase formed as an intermediate during annealing process and known to preserve the c(4×2) reconstruction of Ge(001). The reported results indicate that the Ba-induced incorporated phase on Ge(001) is very effective in protecting the Ge(001) substrate against destructive adsorption of residual gases and can be utilized for long-term, non-destructive Ge sample storage under UHV conditions.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.251
      Issue No: Vol. 419 (2017)
       
  • Depth resolved compositional analysis of aluminium oxide thin film using
           non-destructive soft x-ray reflectivity technique
    • Authors: Mangalika Sinha; Mohammed H. Modi
      Pages: 311 - 318
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Mangalika Sinha, Mohammed H. Modi
      In-depth compositional analysis of 240Å thick aluminium oxide thin film has been carried out using soft x-ray reflectivity (SXR) and x-ray photoelectron spectroscopy technique (XPS). The compositional details of the film is estimated by modelling the optical index profile obtained from the SXR measurements over 60–200Å wavelength region. The SXR measurements are carried out at Indus-1 reflectivity beamline. The method suggests that the principal film region is comprised of Al2O3 and AlOx (x=1.6) phases whereas the interface region comprised of SiO2 and AlOx (x=1.6) mixture. The soft x-ray reflectivity technique combined with XPS measurements explains the compositional details of principal layer. Since the interface region cannot be analyzed with the XPS technique in a non-destructive manner in such a case the SXR technique is a powerful tool for nondestructive compositional analysis of interface region.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.024
      Issue No: Vol. 419 (2017)
       
  • Solid state direct bonding of polymers by vacuum ultraviolet light below
           160nm
    • Authors: Yuki Hashimoto; Takatoki Yamamoto
      Pages: 319 - 327
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Yuki Hashimoto, Takatoki Yamamoto
      This work investigated the application of vacuum ultraviolet (VUV) irradiation to the bonding of various substrates, including glass, polycarbonate (PC), cyclic olefin polymer (COP), polydimethylsiloxane (PDMS) and polymethyl methacrylate (PMMA). This method has the advantage of being able to bond various substrates without the application of heat or adhesives, and therefore may be very useful in the fabrication of micro/nanoscale structures composed of polymers. In contrast to previous applications of this technique, the present study used VUV radiation at wavelengths at and below 160nm so as to take advantage of the higher energy in this range. Bonding was assessed based on measuring the shear stress of various test specimens subjected to VUV irradiation and then pressed together, and a number of analytical methods were also employed to examine the irradiated surfaces in order to elucidate the morphological and chemical changes following VUV treatment. These analyses included water contact angle measurements, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), time of flight secondary ion mass spectrometry (TOF-SIMS) and atomic force microscopy (AFM). Poor bonding was identified between combinations consisting of PMMA/PC, PMMA/COP, PMMA/PMMA, PMMA/glass, and PC/COP, whereas all other combinations resulted in successful bonding with the bonding stress values such as PC/PC=2.0MPa, PC/glass=10.7MPa and COP/COP=1.7MPa, respectively.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.032
      Issue No: Vol. 419 (2017)
       
  • Stabilized super-thermite colloids: A new generation of advanced highly
           energetic materials
    • Authors: Sherif Elbasuney; M. Gaber Zaky; Mostafa Radwan; Sherif F. Mostafa
      Pages: 328 - 336
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Sherif Elbasuney, M. Gaber Zaky, Mostafa Radwan, Sherif F. Mostafa
      One of the great impetus of nanotechnology on energetic materials is the achievement of nanothermites (metal-oxide/metal) which are characterized by massive heat output. Yet, full exploitation of super-thermites in highly energetic systems has not been achieved. This manuscript reports on the sustainable fabrication of colloidal Fe2O3 and CuO nanoparticles for thermite applications. TEM micrographs demonstrated mono-dispersed Fe2O3 and CuO with an average particle size of 3 and 15nm respectively. XRD diffractograms demonstrated highly crystalline materials. SEM micrographs demonstrated a great tendency of the developed oxides to aggregate over drying process. The effective integration and dispersion of mono-dispersed colloidal thermite particles into energetic systems are vital for enhanced performance. Aluminum is of interest as highly energetic metal fuel. In this paper, synthesized Fe2O3 and CuO nanoparticles were re-dispersed in isopropyl alcohol (IPA) with aluminum nanoparticles using ultrasonic prope homogenizer. The colloidal thermite peraticles can be intgegrated into highly energetic system for subsequent nanocomposite development. Thanks to stabilization of colloidal CuO nanoparticles in IPA which could offer intimate mixing between oxidizer and metal fuel. The stabilization mechanism of CuO in IPA was correlated to steric stabilization with solvent molecules. This approach eliminated nanoparticle drying and the re-dispersion of dry aggregates into energetic materials. This manuscript shaded the light on the real development of colloidal thermite mixtures and their integration into highly energetic systems.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.051
      Issue No: Vol. 419 (2017)
       
  • Investigation on depth resolved compositions of e-beam deposited ZrO2 thin
           film
    • Authors: Amol Singh; Mangalika Sinha; R.K. Gupta; Mohammed H. Modi
      Pages: 337 - 341
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Amol Singh, Mangalika Sinha, R.K. Gupta, Mohammed H. Modi
      In-depth compositional analysis of zirconium dioxide thin film deposited on GaAs substrate by e-beam evaporation has been carried out using non-destructive soft x-ray reflectivity (SXR) technique. The compositional details of the film are quantitatively estimated from the best fit of the optical constant profile derived from SXR measurements over 55–150Å wavelength region. The SXR analysis reveals the film composition as 60% ZrO2, 20% Zr0.8O2.2 & 20% oxygen. The interface layer formed at film/substrate interface region is found to be comprised of 25% Ga2O3, 20% As2O3, 35% ZrO2 and 20% oxygen phases.

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.050
      Issue No: Vol. 419 (2017)
       
  • Preparation of hydrophobic polyvinyl alcohol aerogel via the surface
           modification of boron nitride for environmental remediation
    • Authors: Ruiyang Zhang; Wenchao Wan; Lijuan Qiu; Yonghua Wang; Ying Zhou
      Pages: 342 - 347
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Ruiyang Zhang, Wenchao Wan, Lijuan Qiu, Yonghua Wang, Ying Zhou
      Macroscopic polyvinyl alcohol (PVA) aerogel is of great interest in environmental remediation due to its low cost and easy fabrication. However, the hydrophily of PVA aerogel limited its application in oil-water separation. In this work, boron nitride (BN)-modified PVA aerogel has been successfully prepared by a cost-effective frozen-drying method. PVA plays a role as a scaffold of aerogel to support BN nanosheets which can modify the surface properties of PVA aerogel, resulting in a dramatic change of wettability from hydrophily (0°) to hydrophobicity (94.9°–100.8°). Moreover, the obtained BN-modified PVA aerogel possesses a favorable porous structure, low density (41.8–60.0mg/cm3) and good adsorption capacity (12–38g/g), which make it a promising wastewater treatment material. Importantly, PVA aerogel with other functions can be easily fabricated through coupling with other inorganic materials by this strategy, which can provide various promising applications for environmental remediation.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.044
      Issue No: Vol. 419 (2017)
       
  • Effect of surface treatments on physicomechanical, stain-resist, and UV
           protection properties of wool fabrics
    • Authors: Mohammad M. Hassan; Samuel J. Leighs
      Pages: 348 - 356
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Mohammad M. Hassan, Samuel J. Leighs
      The surface of wool fabrics is frequently modified to make them shrink-resistant, water repellent and also to improve their handle properties. In this work, we investigated the effect of common surface modification treatments on fabric stain-resistance, hydrophilicity and UV absorption performance. The surface of wool fabrics was modified by chlorination and also by reacting the chlorinated wool fabrics with a polyamide, a fibre-reactive amino-functional siloxane and a fluorocarbon polymer. The surface of the various treated fabrics was characterised by ATR-FTIR, contact angle measurement and scanning electron microscopy. The effect of surface modification on the tensile strength, surface hydrophilicity, stain-resistance, and UV absorption capacity of the fabric was investigated. It was found that all the treatments except the treatment with the amino-functional siloxane polymer slightly improved the tensile strength of the fabric. The chlorination treatment and the treatment with the polyamide resin made the fabric hydrophilic, and fluorocarbon and silicone resin treatment made the fabric hydrophobic.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.046
      Issue No: Vol. 419 (2017)
       
  • Room-temperature aqueous plasma electrolyzing Al2O3 nano-coating on carbon
           fiber
    • Authors: Yuping Zhang; Yang Meng; Yonghua Shen; Weiwei Chen; Huanwu Cheng; Lu Wang
      Pages: 357 - 364
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Yuping Zhang, Yang Meng, Yonghua Shen, Weiwei Chen, Huanwu Cheng, Lu Wang
      A novel room-temperature aqueous plasma electrolysis technique has been developed in order to prepared Al2O3 nano-coating on each fiber within a carbon fiber bundle. The microstructure and formation mechanism of the Al2O3 nano-coating were systematically investigated. The oxidation resistance and tensile strength of the Al2O3-coated carbon fiber was measured at elevated temperatures. It showed that the dense Al2O3 nano-coating was relatively uniformly deposited with 80–120nm in thickness. The Al2O3 nano-coating effectively protected the carbon fiber, evidenced by the slower oxidation rate and significant increase of the burn-out temperature from 800°C to 950°C. Although the bare carbon fiber remained ∼25wt.% after oxidation at 700°C for 20min, a full destruction was observed, evidenced by the ∼0GPa of the tensile strength, compared to ∼1.3GPa of the Al2O3-coated carbon fiber due to the effective protection from the Al2O3 nano-coating. The formation mechanism of the Al2O3 nano-coating on carbon fiber was schematically established mainly based on the physic-chemical effect in the cathodic plasma arc zone.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.064
      Issue No: Vol. 419 (2017)
       
  • Naturally formed ultrathin V2O5 heteroepitaxial layer on VO2/sapphire(001)
           film
    • Authors: Aaron J. Littlejohn; Yunbo Yang; Zonghuan Lu; Eunsung Shin; KuanChang Pan; Guru Subramanyam; Vladimir Vasilyev; Kevin Leedy; Tony Quach; Toh-Ming Lu; Gwo-Ching Wang
      Pages: 365 - 372
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Aaron J. Littlejohn, Yunbo Yang, Zonghuan Lu, Eunsung Shin, KuanChang Pan, Guru Subramanyam, Vladimir Vasilyev, Kevin Leedy, Tony Quach, Toh-Ming Lu, Gwo-Ching Wang
      Vanadium dioxide (VO2) and vanadium pentoxide (V2O5) thin films change their properties in response to external stimuli such as photons, temperature, electric field and magnetic field and have applications in electronics, optical devices, and sensors. Due to the multiple valence states of V and non-stoichiometry in thin films, it is challenging to grow epitaxial, single-phase V-oxide on a substrate, or a heterostructure of two epitaxial V-oxides. We report the formation of a heterostructure consisting of a few nm thick ultrathin V2O5 epitaxial layer on pulsed laser deposited tens of nm thick epitaxial VO2 thin films grown on single crystal Al2O3(001) substrates without post annealing of the VO2 film. The simultaneous observation of the ultrathin epitaxial V2O5 layer and VO2 epitaxial film is only possible by our unique reflection high energy electron diffraction pole figure analysis. The out-of-plane and in-plane epitaxial relationships are V2O5[100] VO2[010] Al2O3[001] and V2O5[03 2 ¯ ] VO2[100] Al2O3[1 1 ¯ 0], respectively. The existence of the V2O5 layer on the surface of the VO2 film is also supported by X-ray photoelectron spectroscopy and Raman spectroscopy.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.009
      Issue No: Vol. 419 (2017)
       
  • Controllable SERS performance for the flexible paper-like films of reduced
           graphene oxide
    • Authors: Taotao Yan; Lili Zhang; Tongtong Jiang; Zhiman Bai; Xinxin Yu; Peng Dai; Mingzai Wu
      Pages: 373 - 381
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Taotao Yan, Lili Zhang, Tongtong Jiang, Zhiman Bai, Xinxin Yu, Peng Dai, Mingzai Wu
      paper-like films of reduced graphene oxide with controllable shapes and thickness were prepared via funnel filtration and thermal reduction of graphene oxide (GO), which could work as flexible surface-enhanced Raman scattering (SERS) substrates to detect Rhodamine 6G (R6G) molecules. The SERS signal intensity of R6G on annealed films was found to be related with the annealling temperature. The most intense signal was observed for the film obtained at 800°C. While for the sample annealed at 1000°C, no SERS signal could be detected. The underlying mechanism for the difference was discussed. The reported preparation process of flexible rGO paper is simple and cost-effective, which shows great potential in rapid biochemical analysis of agricultural products with irregular surfaces.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.052
      Issue No: Vol. 419 (2017)
       
  • Effect of Si/Al ratio on catalytic performance of hydrothermally aged
           Cu-SSZ-13 for the NH3-SCR of NO in simulated diesel exhaust
    • Authors: Shuai Han; Jin Cheng; Changkun Zheng; Qing Ye; Shuiyuan Cheng; Tianfang Kang; Hongxing Dai
      Pages: 382 - 392
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Shuai Han, Jin Cheng, Changkun Zheng, Qing Ye, Shuiyuan Cheng, Tianfang Kang, Hongxing Dai
      The hydrothermal stability of the CuSSZ-13 samples with various Si/Al ratios was examined. The NO conversions in the NH3-SCR and NH3 oxidation were measured. Physicochemical properties of the samples were characterized by means of a number of analytical techniques. It is shown that the NH3-SCR activity and hydrothermal stability of the CuSSZ-13 samples decreased with the rise in Si/Al ratio. Such decreases were attributed to the drop in the amount of the isolated Cu2+ in the D6R and CHA cage of the CuSSZ-13 samples. Part of the isolated Cu2+ ions were transformed to CuO after hydrothermal aging treatment, especially in the high-Si/Al-ratio samples. A large amount of the aggregated CuO destroyed the skeleton structure of SSZ-13, leading to the deactivation of the samples.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.198
      Issue No: Vol. 419 (2017)
       
  • The synthesis and protein resistance of amphiphilic
           PDMS-b-(PDMS-g-cysteine) copolymers
    • Authors: Yufeng Lei; Yaling Lin; Anqiang Zhang
      Pages: 393 - 398
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Yufeng Lei, Yaling Lin, Anqiang Zhang
      Zwitterionic polymers have been used to cope with nonspecific protein adsorption and bio-fouling problems for a wide range of materials, including biomedical devices, marine coatings and membrane separation. However, direct surface modification with highly water-soluble zwitterionic polymers is rather difficult due to their poor attachment to hydrophobic solid surfaces. In this work, we utilize the hydrophobic interaction to anchor zwitterionic polysiloxanes grafted with cysteine onto surfaces by adding an hydrophobic block of polydimethylsiloxanes, referred as PDMS-b-(PDMS-g-Cys)s. The synthesis involves only three steps of reactions, and the structures of each product were characterized using GPC, FT-IR and 1H NMR. The adsorption and protein resistance of PDMS-b-(PDMS-g-Cys)s on a gold surface are investigated with QCM-D. The results show that the hydrophobic interaction moieties of the additional PDMS blocks help the hydrophilic cysteine-grafted blocks stably attach and then function on the sensor. These findings suggest that the addition of hydrophobic moieties provides an effective approach to construct anti-fouling interfaces with zwitterionic polymers in aqueous solution.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.063
      Issue No: Vol. 419 (2017)
       
  • Effects of Nd-, Pr-, Tb- and Y-doping on the structural, textural,
           
    • Authors: Bahaa M. Abu-Zied; Salem M. Bawaked; Samia A. Kosa; Tarek T. Ali; Wilhelm Schwieger; Faisal M. Aqlan
      Pages: 399 - 408
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Bahaa M. Abu-Zied, Salem M. Bawaked, Samia A. Kosa, Tarek T. Ali, Wilhelm Schwieger, Faisal M. Aqlan
      Recently, nickel oxide, NiO, promoted with various dopants showed an interesting activity behavior in N2O direct decomposition. In this paper, the activity of a series of rare earth (Nd, Pr, Tb and Y) doped NiO catalysts was investigated for this reaction. These catalysts have been prepared by the calcination of their corresponding oxalate mixtures, which have been synthesized via the microwave-assisted precipitation route using oxalic acid as precipitant. Characterization of the obtained catalysts was carried out by using various physico-chemical techniques including TGA, FT-IR, XRD, FE-SEM, TEM, TPR, XPS and electrical conductivity. The results obtained revealed the nanocrystalline nature of the prepared catalysts. Moreover, the presence of the various dopants has led to a noticeable decrease of the NiO crystallites size, mesoporosity development and an increase of its surface area and pore volume. There is a substantial activity increase upon doping NiO with the various rare earth oxides. Such activity increase is associated with the structural modifications as well as the electrical conductivity increase of these catalysts.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.040
      Issue No: Vol. 419 (2017)
       
  • Fabrication of TiO2 nanorods/nanosheets photoelectrode on Ti mesh by
           hydrothermal method for degradation of methylene blue:influence of
           calcination temperature
    • Authors: Xiaoyong Deng; Qiuling Ma; Yuqi Cui; Xiuwen Cheng; Qingfeng Cheng
      Pages: 409 - 417
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Xiaoyong Deng, Qiuling Ma, Yuqi Cui, Xiuwen Cheng, Qingfeng Cheng
      In the study, Using the strategy of hydrothermal reaction followed by annealing at different temperatures, TiO2 nanorods/nanosheets (NRs/NSs) photoelectrodes with diverse microcosmic morphologies and crystal structures were successfully fabricated. Moreover, all samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and Ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS). Meanwhile the photoelectrochemical (PECH) properties were recorded through open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) curves. The photocatalytic (PC) activity of TiO2 NRs/NSs photoelectrodes were further measured by methylene blue (MB) degradation. Results suggest that the nanosheets possessed the width and thickness in the range of 100–400 and 10–20nm, and the nanorods possessed the diameter in the range of around 10–20nm, respectively. Also, the TiO2 NRs/NSs photoelectrode calcined at 500°C exhibited the best proportion of both nanosheets and nanorods and higher photocatalytic activity (73.56%) than those of other TiO2 NRs/NSs photoelectrodes within 150min under visible light illumination, which was ascribed to higher photoproduction electrons-holes (e/h+) pairs separation and visible light absorption. Therefore, the calcination temperature plays a significant role in altering the morphology and crystal structure of TiO2 NRs/NSs photoelectrode, and then enhanced PC performance.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.05.053
      Issue No: Vol. 419 (2017)
       
  • Reduced graphene oxide-NH2 modified low pressure nanofiltration composite
           hollow fiber membranes with improved water flux and antifouling
           capabilities
    • Authors: Xipeng Li; Changwei Zhao; Mei Yang; Bin Yang; Deyin Hou; Tao Wang
      Pages: 418 - 428
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Xipeng Li, Changwei Zhao, Mei Yang, Bin Yang, Deyin Hou, Tao Wang
      Reduced graphene oxide-NH2 (R-GO-NH2), a kind of amino graphene oxide, was embedded into the polyamide (PA) layer of nanofiltration (NF) composite hollow fiber membranes via interfacial polymerization to enhance the permeate flux and antifouling properties of NF membranes under low pressure conditions. In addition, it could mitigate the poor compatibility issue between graphene oxide materials and PA layer. To evaluate the influence of R-GO-NH2 on the performance of the NF composite hollow fiber membrane, SEM, AFM, FTIR, XPS and Zeta potentials were used to characterize the membranes. The results indicated that the compatibility and interactions between R-GO-NH2 and PA layer were enhanced, which was mainly due to the polymerization reaction between amino groups of R-GO-NH2 and acyl chloride groups of TMC. Therefore, salts rejection of the current membranes was improved significantly, and the modified membranes with 50mg/L R-GO-NH2 demonstrated highest performance in terms of the rejections, which were 26.9%, 98.5%, 98.1%, and 96.1%, for NaCl, Na2SO4, MgSO4, and CaCl2 respectively. It was found that with the R-GO-NH2 contents rasing from 0 to 50mg/L, pure water flux increased from 30.44±1.71 to 38.57±2.01L/(m2.h) at 2bar. What’s more, the membrane demonstrated improved antifouling properties.
      Graphical abstract image

      PubDate: 2017-05-17T03:01:18Z
      DOI: 10.1016/j.apsusc.2017.04.080
      Issue No: Vol. 419 (2017)
       
  • Surface science in hernioplasty: The role of plasma treatments
    • Authors: Roberto Nisticò; Giuliana Magnacca; Selanna Martorana
      Pages: 860 - 868
      Abstract: Publication date: 15 October 2017
      Source:Applied Surface Science, Volume 419
      Author(s): Roberto Nisticò, Giuliana Magnacca, Selanna Martorana
      The aim of this review is to clarify the importance of surface modifications induced in biomaterials for hernia-repair application. Starting from the pioneering experiences involving proto-materials as ancient prosthesis, a historical excursus between the biomaterials used in hernioplasty was realized. Subsequently, after the revolutionary discovery of stereoregular polymerization followed by the PP application in the biomedical field performed by the surgeon F. Usher, a comparative study on different hernia-repair meshes available was realized in order to better understand all the outstanding problems and possible future developments. Furthermore, since many unsolved problems on prosthetic devices implantation are linked to phenomena occurring at the interface between the biomaterials surface and the body fluids, the importance of surface science in hernioplasty was highlighted and case studies of new surface-modified generations of prosthesis presented. The results discussed in the following evidence how the surface study are becoming increasingly important for a proper knowledge of issues related to the interaction between the living matter and the artificial prostheses.
      Graphical abstract image

      PubDate: 2017-05-22T10:32:31Z
      DOI: 10.1016/j.apsusc.2017.05.121
      Issue No: Vol. 419 (2017)
       
 
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
 
Home (Search)
Subjects A-Z
Publishers A-Z
Customise
APIs
Your IP address: 54.146.5.196
 
About JournalTOCs
API
Help
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-2016