Subjects -> PHYSICS (Total: 857 journals)
    - ELECTRICITY AND MAGNETISM (10 journals)
    - MECHANICS (22 journals)
    - NUCLEAR PHYSICS (53 journals)
    - OPTICS (92 journals)
    - PHYSICS (625 journals)
    - SOUND (25 journals)
    - THERMODYNAMICS (30 journals)

PHYSICS (625 journals)            First | 1 2 3 4 | Last

Showing 201 - 400 of 741 Journals sorted alphabetically
International Journal of Astronomy and Astrophysics     Open Access   (Followers: 36)
International Journal of Biological, Physical and Chemical Studies     Open Access  
International Journal of Computational Materials Science and Surface Engineering     Hybrid Journal   (Followers: 7)
International Journal of Damage Mechanics     Hybrid Journal   (Followers: 5)
International Journal of Engineering and Applied Physics     Open Access  
International Journal of Fatigue     Hybrid Journal   (Followers: 41)
International Journal of Fracture     Hybrid Journal   (Followers: 14)
International Journal of Geometric Methods in Modern Physics     Hybrid Journal   (Followers: 2)
International Journal of Geophysics     Open Access   (Followers: 5)
International Journal of Heat and Fluid Flow     Hybrid Journal   (Followers: 41)
International Journal of Low Radiation     Hybrid Journal  
International Journal of Low-Carbon Technologies     Open Access   (Followers: 1)
International Journal of Mass Spectrometry     Hybrid Journal   (Followers: 17)
International Journal of Material Forming     Hybrid Journal   (Followers: 1)
International Journal of Materials and Product Technology     Hybrid Journal   (Followers: 2)
International Journal of Mechanical Sciences     Hybrid Journal   (Followers: 14)
International Journal of Mechanics and Materials in Design     Hybrid Journal   (Followers: 7)
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology     Open Access   (Followers: 11)
International Journal of Microstructure and Materials Properties     Hybrid Journal   (Followers: 7)
International Journal of Microwave Science and Technology     Open Access   (Followers: 12)
International Journal of Modeling, Simulation, and Scientific Computing     Hybrid Journal   (Followers: 3)
International Journal of Modern Physics A     Hybrid Journal   (Followers: 15)
International Journal of Modern Physics B     Hybrid Journal   (Followers: 12)
International Journal of Modern Physics C     Hybrid Journal   (Followers: 14)
International Journal of Modern Physics D     Hybrid Journal   (Followers: 13)
International Journal of Modern Physics E     Hybrid Journal   (Followers: 13)
International Journal of Multiphysics     Open Access  
International Journal of Nanomanufacturing     Hybrid Journal  
International Journal of Nanoscience     Hybrid Journal  
International Journal of Nanotechnology     Hybrid Journal   (Followers: 9)
International Journal of Non-Linear Mechanics     Hybrid Journal   (Followers: 8)
International Journal of Nonlinear Dynamics and Control     Hybrid Journal   (Followers: 6)
International Journal of Physics     Open Access   (Followers: 10)
International Journal of PIXE     Hybrid Journal  
International Journal of Plasticity     Hybrid Journal   (Followers: 7)
International Journal of Quantum Information     Hybrid Journal   (Followers: 6)
International Journal of Self-Propagating High-Temperature Synthesis     Hybrid Journal  
International Journal of Solids and Structures     Hybrid Journal   (Followers: 14)
International Journal of Surface Science and Engineering     Hybrid Journal   (Followers: 6)
International Journal of Theoretical and Applied Multiscale Mechanics     Hybrid Journal   (Followers: 3)
International Journal of Theoretical and Mathematical Physics     Open Access   (Followers: 13)
International Journal of Theoretical Physics     Hybrid Journal   (Followers: 17)
International Journal of Thermal Sciences     Hybrid Journal   (Followers: 18)
International Journal on Smart Sensing and Intelligent Systems     Open Access  
International Letters of Chemistry, Physics and Astronomy     Open Access   (Followers: 8)
International Materials Reviews     Hybrid Journal   (Followers: 15)
Iranian Journal of Medical Physics     Open Access  
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
Ironmaking & Steelmaking     Hybrid Journal   (Followers: 4)
Izvestiya, Atmospheric and Oceanic Physics     Full-text available via subscription   (Followers: 1)
Izvestiya, Physics of the Solid Earth     Hybrid Journal   (Followers: 2)
Jambura Physics Journal     Open Access  
JETP Letters     Hybrid Journal   (Followers: 3)
Journal of Adhesion Science and Technology     Hybrid Journal   (Followers: 10)
Journal of Advanced Physics     Full-text available via subscription   (Followers: 13)
Journal of Advances in Physics     Open Access   (Followers: 13)
Journal of Applied Mathematics and Physics     Open Access   (Followers: 9)
Journal of Applied Mechanics and Technical Physics     Hybrid Journal   (Followers: 7)
Journal of Applied Physics     Hybrid Journal   (Followers: 69)
Journal of Applied Spectroscopy     Hybrid Journal   (Followers: 9)
Journal of Astrophysics     Open Access   (Followers: 33)
Journal of Astrophysics and Astronomy     Open Access   (Followers: 58)
Journal of Building Physics     Hybrid Journal   (Followers: 1)
Journal of Chromatographic Science     Hybrid Journal   (Followers: 15)
Journal of Complex Networks     Hybrid Journal   (Followers: 1)
Journal of Composite Materials     Hybrid Journal   (Followers: 241)
Journal of Computational and Theoretical Transport     Hybrid Journal   (Followers: 2)
Journal of Computational Methods in Physics     Open Access   (Followers: 8)
Journal of Computational Physics     Hybrid Journal   (Followers: 59)
Journal of Computational Physics : X     Open Access   (Followers: 1)
Journal of Contemporary Physics (Armenian Academy of Sciences)     Hybrid Journal   (Followers: 9)
Journal of Dynamic Systems, Measurement, and Control     Full-text available via subscription   (Followers: 14)
Journal of Elasticity     Hybrid Journal   (Followers: 7)
Journal of Electron Spectroscopy and Related Phenomena     Hybrid Journal   (Followers: 3)
Journal of Electronic Materials     Hybrid Journal   (Followers: 3)
Journal of Electronics Cooling and Thermal Control     Open Access   (Followers: 9)
Journal of Engineering Materials and Technology     Full-text available via subscription   (Followers: 17)
Journal of Engineering Physics and Thermophysics     Hybrid Journal   (Followers: 2)
Journal of Experimental and Theoretical Physics     Hybrid Journal   (Followers: 4)
Journal of Experimental Physics     Open Access   (Followers: 3)
Journal of Fire Sciences     Hybrid Journal   (Followers: 6)
Journal of Geometry and Physics     Full-text available via subscription   (Followers: 2)
Journal of Geophysical Research : Space Physics     Full-text available via subscription   (Followers: 134)
Journal of Gravity     Open Access   (Followers: 4)
Journal of High Energy Astrophysics     Full-text available via subscription   (Followers: 25)
Journal of High Energy Physics     Hybrid Journal   (Followers: 17)
Journal of High Energy Physics, Gravitation and Cosmology     Open Access   (Followers: 2)
Journal of Hydrogels     Full-text available via subscription  
Journal of Hyperspectral Remote Sensing     Open Access   (Followers: 23)
Journal of Imaging     Open Access   (Followers: 3)
Journal of Information Display     Open Access   (Followers: 1)
Journal of Intelligent Material Systems and Structures     Hybrid Journal   (Followers: 8)
Journal of Lightwave Technology     Hybrid Journal   (Followers: 14)
Journal of Low Frequency Noise, Vibration and Active Control     Open Access   (Followers: 8)
Journal of Luminescence     Hybrid Journal   (Followers: 2)
Journal of Materials Engineering and Performance     Hybrid Journal   (Followers: 22)
Journal of Materials Physics and Chemistry     Open Access   (Followers: 7)
Journal of Materials Science     Hybrid Journal   (Followers: 25)
Journal of Materials Science : Materials in Electronics     Hybrid Journal   (Followers: 2)
Journal of Materials Science : Materials in Medicine     Hybrid Journal   (Followers: 1)
Journal of Mathematical Fluid Mechanics     Hybrid Journal   (Followers: 10)
Journal of Mathematical Physics     Hybrid Journal   (Followers: 25)
Journal of Medical Imaging and Health Informatics     Full-text available via subscription  
Journal of Medical Ultrasonics     Hybrid Journal   (Followers: 2)
Journal of Micro/Nanolithography MEMS and MOEMS     Hybrid Journal   (Followers: 24)
Journal of Molecular Spectroscopy     Hybrid Journal   (Followers: 6)
Journal of Motor Behavior     Hybrid Journal   (Followers: 8)
Journal of Multiscale Modeling     Hybrid Journal   (Followers: 1)
Journal of Nepal Physical Society     Open Access  
Journal of Nondestructive Evaluation     Hybrid Journal   (Followers: 11)
Journal of Nonlinear Dynamics     Open Access   (Followers: 6)
Journal of Nonlinear Mathematical Physics     Hybrid Journal   (Followers: 2)
Journal of Nuclear Physics, Material Sciences, Radiation and Applications     Open Access   (Followers: 5)
Journal of Optics     Hybrid Journal   (Followers: 17)
Journal of Photonics for Energy     Hybrid Journal   (Followers: 2)
Journal of Physical and Chemical Reference Data     Hybrid Journal   (Followers: 4)
Journal of Physical Chemistry B     Hybrid Journal   (Followers: 48)
Journal of Physical Chemistry C     Hybrid Journal   (Followers: 36)
Journal of Physical Oceanography     Hybrid Journal   (Followers: 18, SJR: 2.461, CiteScore: 3)
Journal of Physical Organic Chemistry     Hybrid Journal   (Followers: 8)
Journal of Physics and Chemistry of Solids     Hybrid Journal   (Followers: 3)
Journal of Plasma Physics     Hybrid Journal   (Followers: 21)
Journal of Polymer Science Part B: Polymer Physics     Hybrid Journal   (Followers: 22)
Journal of Porous Materials     Hybrid Journal   (Followers: 4)
Journal of Porphyrins and Phthalocyanines     Hybrid Journal   (Followers: 1)
Journal of Quantitative Spectroscopy and Radiative Transfer     Hybrid Journal   (Followers: 3)
Journal of Reinforced Plastics and Composites     Hybrid Journal   (Followers: 30)
Journal of Rheology     Full-text available via subscription   (Followers: 7)
Journal of Sandwich Structures and Materials     Hybrid Journal   (Followers: 4)
Journal of Scientific Research     Open Access  
Journal of Sensors     Open Access   (Followers: 25)
Journal of Sol-Gel Science and Technology     Hybrid Journal  
Journal of Solid State Physics     Open Access   (Followers: 8)
Journal of Spectroscopy     Open Access   (Followers: 6)
Journal of Superconductivity and Novel Magnetism     Partially Free   (Followers: 1)
Journal of Synchrotron Radiation     Open Access   (Followers: 3)
Journal of the American Society for Mass Spectrometry     Hybrid Journal   (Followers: 32)
Journal of the ICRU     Hybrid Journal  
Journal of the Korean Physical Society     Partially Free  
Journal of the Physical Society of Japan     Hybrid Journal   (Followers: 2)
Journal of Theoretical and Applied Physics     Open Access   (Followers: 9)
Journal of Tissue Engineering     Open Access   (Followers: 6)
Journal of Ultrasound in Medicine     Full-text available via subscription   (Followers: 11)
Journal of Vibration and Control     Hybrid Journal   (Followers: 42)
Journal of Visualization     Hybrid Journal   (Followers: 3)
Journal of Zhejiang University : Sceince A     Hybrid Journal  
JPSE (Journal of Physical Science and Engineering)     Open Access  
Jurnal Fisika     Open Access  
Jurnal Ilmiah Pendidikan Fisika Al-Biruni     Open Access  
Jurnal NEUTRINO     Open Access  
Jurnal Online of Physics     Open Access  
Jurnal Pendidikan Fisika Indonesia (Indonesian Journal of Physics Education)     Open Access  
Jurnal Penelitian Fisika dan Aplikasinya     Open Access  
Jurnal Penelitian Sains (JPS)     Open Access  
Karbala International Journal of Modern Science     Open Access  
Kasuari : Physics Education Journal     Open Access  
La Rivista del Nuovo Cimento     Hybrid Journal  
Lasers in Surgery and Medicine     Hybrid Journal   (Followers: 1)
Latvian Journal of Physics and Technical Sciences     Open Access  
Letters in High Energy Physics     Open Access  
Letters in Mathematical Physics     Hybrid Journal   (Followers: 4)
Light : Science & Applications     Open Access   (Followers: 3)
Living Reviews in Computational Astrophysics     Open Access   (Followers: 3)
Living Reviews in Relativity     Open Access  
Living Reviews in Solar Physics     Open Access   (Followers: 1)
Lubrication Science     Hybrid Journal   (Followers: 2)
Macalester Journal of Physics and Astronomy     Open Access   (Followers: 5)
Machining Science and Technology: An International Journal     Hybrid Journal   (Followers: 2)
Magnetic Resonance     Open Access  
Magnetic Resonance Letters     Open Access  
Magnetic Resonance Materials in Physics, Biology and Medicine     Hybrid Journal   (Followers: 3)
MAPAN     Hybrid Journal  
Mass Spectrometry Reviews     Hybrid Journal   (Followers: 31)
Matéria (Rio de Janeiro)     Open Access  
Materials and Design     Open Access   (Followers: 47)
Materials at High Temperatures     Full-text available via subscription   (Followers: 3)
Materials Chemistry and Physics     Full-text available via subscription   (Followers: 15)
Materials Research Bulletin     Hybrid Journal   (Followers: 25)
Materials Research Innovations     Hybrid Journal   (Followers: 1)
Materials Science     Hybrid Journal   (Followers: 7)
Materials Science and Engineering: A     Hybrid Journal   (Followers: 44)
Materials Science and Engineering: B     Hybrid Journal   (Followers: 22)
Materials Science and Engineering: R: Reports     Hybrid Journal   (Followers: 15)
Materials Science and Technology     Hybrid Journal   (Followers: 40)
Materials Today Physics     Hybrid Journal   (Followers: 1)
Matériaux & Techniques     Full-text available via subscription   (Followers: 2)
Mathematical Physics, Analysis and Geometry     Hybrid Journal   (Followers: 3)
Mathematics and Mechanics of Solids     Hybrid Journal   (Followers: 3)
Matter and Radiation at Extremes     Open Access   (Followers: 1)
Matters Select     Open Access  
Meccanica     Hybrid Journal   (Followers: 1)
Mechanics of Advanced Materials and Structures     Hybrid Journal   (Followers: 6)
Mechanics of Materials     Hybrid Journal   (Followers: 25)
Mechanics of Time-Dependent Materials     Hybrid Journal   (Followers: 2)
Mechanics Research Communications     Hybrid Journal   (Followers: 4)
Medical Physics     Hybrid Journal   (Followers: 17)
Micro and Nano Systems Letters     Open Access   (Followers: 6)
Microfluidics and Nanofluidics     Hybrid Journal   (Followers: 11)
Microporous and Mesoporous Materials     Hybrid Journal   (Followers: 9)
Modern Instrumentation     Open Access   (Followers: 57)

  First | 1 2 3 4 | Last

Similar Journals
Journal Cover
Journal of Porous Materials
Journal Prestige (SJR): 0.5
Citation Impact (citeScore): 2
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1573-4854 - ISSN (Online) 1380-2224
Published by Springer-Verlag Homepage  [2469 journals]
  • Correction to: Recent advances in the design of metal–organic frameworks
           for methane storage and delivery

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      PubDate: 2022-06-01
       
  • A review on zeolite imidazole frameworks: synthesis, properties, and
           applications

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      Abstract: Abstract Zeolitic imidazolate frameworks (ZIFs) consist of transition metal ions (Zinc or Cobalt) and imidazolate (Im) linkers in tetrahedral coordination surrounded by nitrogen atoms from the five-membered imidazole ring serving as a bridging linker, i.e. a link connecting the metal centres in the three-dimensional framework. The crystal structures of ZIFs share the same topologies as those that can be found in aluminosilicate zeolites. ZIFs have advantages over zeolites such that the hybrid framework structures are expected to have more flexibility in surface modification. Due to their interesting properties such as high porosity, high surface area, exceptional thermal and chemical stability, ZIFs are very attractive materials with potential applications including gas sorption, gas separation, and catalysis. Over a decade tremendous work has been carried out to develop ZIFs in synthesis and its various applications. In this review, we have briefly composed the different methods for the synthesis of ZIFs such as solvent-based and solvent-free methods. In addition, its thermal and chemical properties and potential applications in the field of adsorption, separation, catalysis, sensing, and drug delivery have been summarized.
      PubDate: 2022-06-01
       
  • Comparison of Mg–Al layered double hydroxides intercalated with OH−
           and CO32− for the removal of HCl, SO2, and NO2

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      Abstract: Abstract Two different Mg–Al layered double hydroxides (LDHs), OH⋅Mg–Al LDH and CO3⋅Mg–Al LDH, are prepared and utilized for the efficient removal of acidic gases. The former contains OH− anions intercalated between the Mg–Al layers, whereas the latter contains CO32−. The synthesized Mg–Al LDHs were characterized via X-ray diffraction (XRD) and tested for their ability to remove three important acidic gases, HCl, NO2, and SO2 via chemical reaction with the intercalated OH− and CO32− anions (for HCl and NO2) and surface adsorption (in case of SO2). Both OH⋅Mg–Al LDH and CO3⋅Mg–Al LDH showed appreciable gas removal abilities with respect to HCl and NO2. However, in case of OH⋅Mg–Al LDH, a higher gas removal efficiency was observed due to the facile reaction between the acidic gases and the intercalated OH− anions between the LDH layers. Briefly, the HCl removal amount was 0.53 mmol for OH⋅Mg–Al LDH and 0.49 mmol for CO3⋅Mg–Al LDH in 90 min. The NO2 removal amount was 0.09 mmol for OH⋅Mg–Al LDH and 0.07 mmol for CO3⋅Mg–Al LDH in 90 min. The SO2 removal amounts by the LDHs were comparable since the gas was adsorbed on the surface of the LDHs. The SO2 removal amount was 0.04 mmol for OH⋅Mg–Al LDH and 0.04 mmol for CO3⋅Mg–Al LDH in 90 min. The XRD results indicated that the LDHs retained their structures after gas removal, despite attenuation of the XRD peak intensities. Thus, two easily synthesized LDHs with efficient acidic gas removal characteristics have been developed via judicious utilization of the reactions that dictate gas removal by LDHs.
      PubDate: 2022-06-01
       
  • The porous composite BN@SHS made of boron nitride, silica hollow spheres
           and Si–O–B interface

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      Abstract: Abstract Calcined silica SiO2 hollow spheres (SHS), with a specific surface area of 523 m2 g−1, were used as porous scaffolds of ammonia borane (AB). AB is used as precursor of boron nitride BN. By capillary effect, AB was infiltrated into the porosity of the SHS, and the as-obtained composite AB@SHS was pyrolyzed. Up to 160 °C, AB transforms into polyborazylene (PB); as a result, the composite PB@SHS was produced. Up to 600 °C, BN forms, and the composite BN@SHS was produced. Both composites are porous, with a specific surface area of 360 and 296 m2 g−1 respectively. Results from MAS NMR and XPS analyses showed that PB@SHS and BN@SHS contain B–O bonds, with more B–O bonds and possibly Si–O–B bonds for the latter. In other words, PB@SHS is made of PB, B–O bonds, and SiO2, while BN@SHS is made of BN, B–O bonds, possibly a Si–O–B interface, and SiO2. Based on first attempts, BN@SHS appeared to have a potential for improving the CO2 adsorption properties of the calcined SHS. Expressed in cm3(CO2) g−1, the CO2 uptakes are 6.7 for BN@SHS and 6.3 for the calcined SHS, at 30 °C under 1.5 bar CO2; but expressed in mm3(CO2) m−2, the respective CO2 uptakes are 22.6 and 12.
      PubDate: 2022-06-01
       
  • Effects of particle size and sintering atmosphere on the structure and
           performance of 316L/SiC composite hollow fiber membranes

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      Abstract: Abstract 316L stainless steel hollow fiber membranes (HFs) are alternatives for polymer and ceramic based membranes. Chemical and waste treatment industries are application areas of HFs and they are used as particle filter of liquid and gas separations. Hollow fiber membranes were produced by dry–wet spinning technique which is one of the production methods of HFs. The aim of the study is to produce metal matrix composite (316L+SiC) hollow fiber membranes using different particle sizes (coarse, fine and their mixture) and sintering them by different sintering atmospheres (argon and nitrogen/hydrogen), and to examine the chemical compositions, electrical resistivity, pore amount, average pore size and pore shape and distribution. The hollow fibers are then subjected to a 3-point bending test to determine their mechanical properties. Gas permeation tests were also used to characterize the hollow fiber membranes. HFs produced from coarse particles show lower densification. On the other hand, the finest particle size gives the highest bending strength and bending deflection.
      PubDate: 2022-06-01
       
  • One-step ultrasonication-assisted synthesis of graphitized multi-walled
           carbon nanotubes@Super P Li nanocomposite for the determination of
           isoproturon

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      Abstract: Abstract Carbonaceous nanomaterials have exhibited huge practical prospects as conductive sensitizers for the modification of electrodes. In this work, the nanocomposite of graphitized multi-walled carbon nanotubes@Super P Li carbon nanoparticles (GCNTs@SP-Li) was designed via a simple ultrasonication-assisted strategy, and then the GCNTs@SP-Li/GCE sensor based on the synthesized GCNTs@SP-Li nanocomposite decorating glassy carbon electrode (GCE) was successfully applied in the sensitive detection of isoproturon (ISO). For the GCNTs@SP-Li nanocomposite, GCNTs with porous structure presented excellent adsorption property, which contributed to the preconcentration of ISO and facilitated the electrolyte penetration. Additionally, GCNTs possessed good electrical conductivity owing its higher graphitization degree. More importantly, the interconnected dot-line-like structure of GCNTs@SP-Li nanocomposite acted as conductive “highways” to remarkably reduce the electron transport distance, which could significantly accelerate the process of redox reaction. Benefiting from the synergistic effect of GCNTs and SP-Li, the optimized GCNTs@SP-Li/GCE sensor showed a low detection limit of 0.1653 μM in the linear concentration of 0.7–30 μM. Additionally, the proposed sensor exhibited satisfactory recoveries from 97.2 to 101.6% towards the determination of ISO in river water and tap water. This work offers a feasible and cost-effective idea in developing the high-performance ISO electrochemical sensor.
      PubDate: 2022-06-01
       
  • Comparison of characteristics of the cellulose nanocrystal aerogels
           aminosilane-functionalized through gas-phase reaction

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      Abstract: Abstract The cellulose nanocrystal (CNC) aerogels through freeze-drying (FD) and supercritical CO2 drying (SC) were functionalized using aminosilane via vapor-phase reaction, and then they were characterized with a few different techniques. It was shown that the distinct microstructures in both pristine CNC aerogels generated no difference in their amine loading, being about 7.2 mmol g−1. The grafting reaction took place only on the CNC surfaces, and more amorphous phase from the aminosilane was formed in the CNC-FD aerogel than in the CNC-SC one during the modification. As a result, the modified CNC-FD (m-CNC-FD) aerogel exhibited a lower crystallinity and thermal stability than the modified CNC-SC (m-CNC-SC) one. The dual Langmuir isotherm model gave a good description of CO2 adsorption on both modified CNC aerogels. The m-CNC-FD aerogel gave a greater chemical affinity to CO2 than the m-CNC-SC one, but the latter exhibited a greater chemisorption capacity for CO2 than the former. The two modified aerogel exhibited a different adsorption–desorption profiles for CO2. However, the total CO2 uptakes for the m-CNC-FD and the m-CNC-SC aerogels were up to 2.5 mmol g−1 at 25 ℃ and 100 kPa, and the temperature for its complete removal was 108 ℃. Therefore, the similarity in the CO2 adsorption performance illustrated that both the CNC aerogels were all good porous materials of aminosilane for CO2 capture.
      PubDate: 2022-06-01
       
  • MOF-derived double-shelled Fe(OH)3@NiCo-LDH hollow cubes and their
           efficient adsorption for anionic organic pollutant

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      Abstract: Abstract Combination of multiple components with hollow architectures and complex multi-shelled structures may result in synergistically enhancing the performance and application of composite materials. Herein, we have demonstrated a metal–organic frameworks (MOFs) derived approach toward the large-scale and facile synthesis of hierarchical double-shelled Fe(OH)3@NiCo-layered double hydroxides (NiCo-LDH) hollow cubes with the inner Fe(OH)3 and outer NiCo-LDH layers. The synthetic procedures involved the oriented deposition of NiCo-LDH shell on the surface of Prussian blue (PB) cubes in the refluxing process and a subsequent chemical etching of PB template with NaOH solution at room temperature. The obtained samples have been systematically characterized by SEM, TEM, FT-IR, XRD, XPS and N2 adsorption–desorption analysis. Benefiting from the structural merits including high specific surface area, abundant diffusion passage and unique hierarchical hollow structures, the derived double-shelled Fe(OH)3@NiCo-LDH hollow cubes exhibited significant adsorption capacity toward Congo red and the maximum adsorption capacity can reach up to 658.52 mg/g at 25 °C. Langmuir isotherm model provided a better description for the adsorption isotherms, and pseudo-second-order kinetic model can well represent the adsorption kinetics. Moreover, the removal efficiency of Fe(OH)3@NiCo-LDH hollow cubes can still reach 73.1% for Congo red after recycling five times, indicating a good recovery efficiency. Furthermore, the possible adsorption mechanism of the Fe(OH)3/NiCo-LDH composite involved ions exchange, hydrogen bonding interaction and electrostatic attraction. Therefore, the double-shelled Fe(OH)3@NiCo-LDH hollow cubes have the potential application to absorb and remove anionic organic dye from wastewater solution in view of their facile synthesis method and excellent adsorption performance.
      PubDate: 2022-06-01
       
  • Porous walnut-like Mn2O3 anode derived from the waste graphene production
           effluent

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      Abstract: Abstract According to the idea of the circular economy, various wastes should be reasonably managed and recycled for the achievement of the carbon peak and carbon neutralization (double carbon targets). For this purpose, Mn2+ in the waste graphene production effluent was firstly extracted in the form of Mn2O3 powder by the chemical precipitation and the subsequent calcination in air for the different times of 0.5 h, 2 h and 4 h, and the resultant samples were marked as Mn2O3-0.5 h, Mn2O3-2 h, Mn2O3-4 h, respectively. The removal rate and recovery rate of Mn2+ was calculated as about 99.9% and 92.6%, respectively. Furthermore, the effect of the calcination time on the morphology, structure and Li-storage performance of Mn2O3 powder was also further investigated. The results showed that the crystallinity of Mn2O3 increased with the increase of the calcination time, while the walnut-like morphology underwent a process from the integrity to the collapse. Resultantly, 2 h was an optimal calcination time, and Mn2O3-2 h powder exhibited a porous walnut-like morphology with the mean particle size of about 1.0 μm and the largest surface area. Furthermore, Mn2O3-2 h anode delivered the best electrochemical Li-storage performances. For example, the reversible discharge capacity of Mn2O3-2 h anode was about 466 mAh/g for 100 cycles at 1.0 A/g, higher than those of Mn2O3-0.5 h anode and Mn2O3-4 h anode. Obviously, such efforts provide a new strategy for the recovery of graphene production effluent, which may promote the development of the circular economy and the achievement of the double carbon targets.
      PubDate: 2022-06-01
       
  • Preparation, modification and deodorization performance of MCM-41
           composite corn stalk

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      Abstract: Abstract A series of MCM-41 and corn stalk (SC) composites (SC-MCM-41) were prepared via hydrothermal method. When measured for a SC-MCM-41 with SC/MCM-41 mass ratio of 1:2, the adsorption time of H2S and CH3SH can reach 90 min and 80 min, respectively. Whereas, Cu–SC-MCM-41 with copper content of 12.3% exhibited a longer adsorption time, which was 125 min and 90 min for H2S and CH3SH, respectively. Both SC-MCM-41 and Cu–SC-MCM-41 showed a rough surface with multi-level pore structure dominated by mesopores. Within the composite, the SC and MCM-41 is chemically connected by the C–Si bonds and nitrogen-containing functional groups on the surface. The copper in the Cu–SC-MCM-41 composite mainly exists in the form of CuO and Cu2O. Following H2S and CH3SH adsorption, solid-phase products were deposited on the surface and inside of the Cu–SC-MCM-41 composite, leading to pores blockage with consequent reduction of the adsorption performance.
      PubDate: 2022-06-01
       
  • Novel MCM-41 based chromogenic probe: highly selective and sensitive upon
           cyanide ion over other interfering anions in water

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      Abstract: Abstract A new molecular anion receptor, HL, was synthesized via condensation reaction of 2-hydroxy-3-methoxy-5-((2,4-dichlorophenyl)diazenyl)benzaldehyde, L, with 3-aminopropyl triethoxysilane in EtOH. Moreover, a novel hybrid organic–inorganic chromogenic material (HL/MCM-41) was also prepared by covalently anchoring of HL onto MCM-41 scaffold. The prepared chromogenic probe was proved using various characterization techniques such as XRD, FE-SEM, BET, TGA, and FT-IR. Remarkably, HL/MCM-41 act as a solid chromogenic probe and shows unique and rapid sensitivity towards CN−, over other interfering anions such as H2PO4−, AcO−, F−, Cl−, and Br−, in water and could it easily visualized through naked eye detection even at 5 × 10–3 molL−1 without any spectroscopic instrumentation.
      PubDate: 2022-06-01
       
  • Evaluation of bio-char as porous catalyst support in the pyrolysis of
           Brassica napus subsp. napus cake

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      Abstract: Abstract It is very important to produce carbonaceous porous material from sustainable biomass resource and to investigate its different application areas. In this study, it was aimed to use fir wood sawdust as catalyst support material in precious metal catalysts and to evaluate this catalyst in pyrolysis reactions of Brassica napus subsp. napus cake. Fir wood sawdust, which have high carbon and volatile matter content, was a suitable raw material for the production of bio-char by carbonization of biomass. 1%, 3% and 5% platinum (Pt) and palladium (Pd) metal loading was applied to fir wood sawdust biochar (FB) and the obtained catalysts were characterized. Among the different metal-loaded catalysts, the catalysts with the highest BET surface area are 5%Pd-FB and 1%Pd-FB catalysts. TEM images showed that as the amount of metal was increased, the particle size of Pd metal was also increased. ICP-OES results verified that the used impregnation method was more efficient and the standard deviation proportion was lower at low metal ratios. Pyrolysis experiments of B. napus subsp. napus were carried out in analytical pyrolysis–gas chromatography/mass spectrometry (Py-GC/MS) system with and without catalyst. Pyrolysis products was mixture of organic compounds in the range of C7–C29 carbons. With the application of catalytic pyrolysis, while the amount of alcohol, which was the desired product, was increased in the pyrolysis product, the amount of acid, which was the undesired product, was decreased. However, the amount of PAH, which was an undesirable product, increased with some catalyst applications, showed that bi-metallic catalyst applications can also be applied in future studies. Experimental results and discussions showed that the synthesis of carbon support material from biomass, which is a cheap and renewable resource, is a promising study.
      PubDate: 2022-06-01
       
  • Highly-efficient adsorption behavior of mesoporous Co-HDIPT toward both
           anionic and cationic organic dyes

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      Abstract: Abstract Metal–organic frameworks (MOFs) exhibit the prominent advantages in the efficient removal of organic dyes owing to their diverse topology structure, adjustable pore parameters, high specific surface area and special affinity brought by the metal node and polydentate organic linkers. Herein, a mesoporous Co-HDIPT is synthesized successfully and employed in the adsorption tests of eight synthetic dyes for the first time involving congo red, methyl orange, reactive blue 19, basic fuchsin, malachite green, acid fuchsin, rhodamine B and acid yellow 23. These dyes are featured in different ionic nature (cationic or anionic) and functional groups. The adsorption conditions were optimized, and the adsorption kinetics and the adsorption isotherms were simulated to investigate the adsorption mechanism. Interestingly, the resulting Co-HDIPT exhibits a rapid adsorption rate toward eight organic dyes, and an extraordinary adsorption efficiency of 14,723.7 mg/g toward MG, which value is higher than the previously reported results by other MOFs-based adsorbents. To the best of our knowledge, it’s the first time to study the adsorption activities of the mesoporous Co-HDIPT, and the satisfied results would enrich the applications of mesoporous MOFs in the efficient removal of synthetic organics from the waste water.
      PubDate: 2022-06-01
       
  • Improved sound absorption performance of synthetic fiber materials for
           industrial noise reduction: a review

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      Abstract: Abstract Sound absorption mechanism, material modification and structural design of various synthetic fiber materials for industrial noise reduction are reviewed in this paper for the problems of low sound absorption coefficient (SAC) and narrow frequency band of porous materials. Delany-Bazley model and Johnson-Champoux-Allard (JCA) model are widely used to predict the SAC, but they are slightly different. The air viscous effect plays an important role in Delany-Bazley model and its modified forms, while JCA model and its modified forms consider the effect of thermal conduction in addition to air viscosity. In addition, synthetic fiber materials such as polymers, metal fibers and inorganic fibers are widely used in noise reduction fields of various industries due to their unique acoustic and mechanical performance. Acoustic properties of polymers are usually improved by adding fillers, using perforated structures, gradient porous structures, and multilayer composite structures. And improving preparation method, increasing thickness of back cavity, combining different pore sizes, developing new composite materials, and adopting perforation technology can greatly promote the engineering application of metal fibers in extreme environments. Common methods to improve the sound absorption performance of inorganic fibers are to modify preparation method, increase thickness of materials and research composite materials.
      PubDate: 2022-06-01
       
  • Alkylation of benzene by long-chain alkenes on immobilized phosphotungstic
           acid

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      Abstract: Abstract Linear alkylbenzenes (LAB) are semi-products in the manufacture of linear alkylbenzene sulfonate surfactants that are active ingredients of various detergents. The use of traditional soluble acids (e.g. hydrofluoric acid or aluminum chloride) as catalysts for production of LAB results in the formation of large amounts of acidic toxic wastes. In this work, an efficient heterogeneous catalyst containing immobilized phosphotungstic acid (PTA) was synthesized and tested in the alkylation of benzene by higher alkenes. Sol–gel synthesis of silica gel from tetraethyl orthosilicate and PTA, as precursors, produced a mesoporous material containing covalently embedded PTA clusters. Obtained superacidic catalyst demonstrated high catalytic activity in liquid-phase alkylation of benzene by higher alkenes. Conversion of alkenes to corresponding phenylalkanes on this catalyst was significantly higher than on pure PTA. Covalent embedding of catalytically active HPA clusters prevented their leaching from the catalyst surface, which enabled its excellent catalytic properties.
      PubDate: 2022-06-01
       
  • Production and characterization of porous magnetic biochar: before and
           after phosphate adsorption insights

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      Abstract: Abstract The modification process of biochars enables different advantages including enhanced adsorption properties for different pollutants. Herein, porous magnetic biochars (PMB) were successfully produced from softwood biomass through a two-step pyrolysis process together with FeCl3 modification. The effect of production temperature on adsorption was studied at 200 or 300 °C, followed by iron salt modification and subsequent pyrolysis at 600 or 800 °C. Biochars were characterized before and after phosphate adsorption via various characterization methods to acquire structural, elemental, and morphological properties of the adsorbent. The effects of phosphate concentration, contact time, and temperature on the adsorption process were examined in the batch mode. The characterization showed embedded iron oxide crystals of 23 nm within the biochar structure with a magnetic strength of 38.9 emu/g, which can assist the separation process of the powdered adsorbent from the aqueous medium. The surface area of the PMB was measured as 93 m2/g and 0.002 cm3/g pore volume. PMB showed complete removal (100%) of phosphate at the lower concentration (5 mg/l P). At higher concentration (25 mg/l P), the biochar prepared under 200/800 °C showed the highest removal (30%). The adsorption was enhanced with time (optimal 3 h) and temperature, which shows endothermic chemisorption following Langmuir isotherm and Pseudo-second order kinetic models. The desorption study suggested the slow release of phosphate from the spent adsorbent and potential reuse for soil enhancement. These results point towards the sustainable use of PMB as an effective and magnetically recyclable adsorbent for phosphate removal and reclaim.
      PubDate: 2022-06-01
       
  • Large-scale rapid synthesis of C@MnO2 nano particles by using an
           ultrasound strategy for supercapacitor electrode

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      Abstract: Abstract A facile approach of introducing ultrasound for the large-scale rapid synthesis of core-shell C@MnO2 nano particles was suggested for practical application in supercapacitors. Results showed that the mesoporous C@MnO2 particles possess a high specific surface area of 62.8 m2 g−1. With the use of stable gel electrolyte, the C@MnO2 electrode delivers a specific capacitance of 177 F g−1 at 0.5 A g−1 under a high mass loading of 6 mg cm−2. When the current density increases to 10 A g−1, the specific capacitance reaches up to 128 F g−1. Long-term test confirms only 8.3% decline in initial capacitance after 5000 cycles, thus implying the practical application of MnO2 for energy storage devices.
      PubDate: 2022-06-01
       
  • Self-supporting porous high-entropy MAX electrode for highly active
           electrocatalyst H2 evolution in alkali solution

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      Abstract: Abstract In this study, a low cost and high efficient porous high-entropy V2Snx(FeCoNi)1.2−xC (x = 0.4 ~ 0.8) MAX electrode (PHEM) has been fabricated through powder metallurgy method. The phase constitutes, morphology, and elements distribution are characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive spectrometer. The hydrogen evolution performance of the materials was investigated by cyclic voltammetry curves, linear polarization curves, and electrochemical impedance spectrum. The electrochemical results reveal that the porous high-entropy MAX electrode exhibits excellent performance on hydrogen evolution. In 6 M KOH solution, the optimized electrode of V2Sn0.6(FeCoNi)0.6C provides overpotentials of 284 mV at 20 mA cm−2, and onset potential and Tafel slope are − 0.26 V (vs RHE) and 37.9 mV dec−1 at room temperature, respectively. Furthermore, porous high-entropy V2Sn0.6(FeCoNi)0.6C MAX electrode exhibits excellent chemical stability in alkaline solution for 13 h. This work is expected to be applied in the fabrication of other porous high-entropy MAX and offers a new route to high performance electrocatalyst for a low cost and simple method.
      PubDate: 2022-06-01
       
  • Unusual ordered mesoporous carbon material with short channels and big
           pore size: Synthesis and effective adsorption of Cr(VI)

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      Abstract: Abstract A new ordered mesoporous carbon material, characterized by 300–400 nm long nano-channels, 10 nm big pore size and a specific area at 651 m2/g was successfully synthesized for the first time using a novel mesoporous silica material as template agent. The carbon nano-channels in this new OCNB material are highly hexagonally ordered. In the removal of Cr(VI) in aqueous solution, due to its shortened channels and big pore size, this OCNB material exhibits 7 times faster adsorption rate and 3.2 times higher adsorption capacity comparing to a commercial activated carbon material. The channel structure of this OCNB material was found to be a crucial role in the removal of metal ions in aqueous solution to achieve high removal rate and high equilibrium adsorbing quantity due to the reduction of mass transfer resistance inside the short and straight nano-channels of the OCNB material. This work presents a successful demonstration to meet the demand of highly efficient mass transfer in some processes like the removal of metal ions in aqueous solution by tuning the channel structure of ordered mesoporous carbon materials.
      PubDate: 2022-06-01
       
  • Mesoporous HZSM-5 catalysts for the conversion of waste plastics to liquid
           fuels

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      Abstract: Abstract Three micro-mesoporous HZSM-5 catalysts were synthesized using three different mesoporous templates and studied for the conversion of a model municipal waste plastic mixture to produce liquid fuels of high value. For the comparison, the conversion of an actual waste plastic mixture and HDPE was also studied. The experiments were performed in a batch stirred reactor at three reaction temperatures (350, 375, and 400 °C) and at fixed cold H2 pressure (20 bar), reaction time (60 min), and plastic to catalyst ratio (20:1 by wt.). The micro-mesoporous catalysts produced better activity and selectivity than their parent HZSM-5 catalyst. The catalyst, prepared by combining two different templates, was found to be the most favorable catalyst offering 67.1% liquid yield at 400 °C with actual waste plastic. The best performing catalyst has shown the prospects for commercial applications.
      PubDate: 2022-06-01
       
 
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