Abstract: Abstract In recent years, there has been an exponential increase in the production of silver bionanoparticles due to their widespread commercialization and technological applications. However, there is limited understanding of the impact of silver bionanoparticles on biological agents commonly used in wastewater treatment, particularly in waste stabilization ponds (WSPs). This study aimed to synthesize new silver nanoparticles (sg-AgNPs) from Synadenium glaucescens root using an environmentally friendly method and optimized biosynthesis parameters, and evaluate their antimicrobial activity and ecotoxicological impact on WSPs using standardized approaches. The average primary sizes of the sg-AgNPs in the five samples were not significantly different (P > 0.05), indicating the effectiveness of the eco-friendly method and the importance of optimal biosynthesis conditions. Analysis from UV–Vis spectroscopy, energy-dispersive spectroscopy (EDX), transmission electron microscope (TEM), and X-ray diffraction (XRD) confirmed that sg-AgNPs exhibited typical characteristics of green silver nanoparticles. Furthermore, sg-AgNPs showed strong antimicrobial activity (MIC, 0.012–0.094 mg/ml) against gram-positive bacteria (Escherichia coli), gram-negative bacteria (Staphylococcus aureus), non-filamentous fungi (Candida albicans) and filamentous fungi (Aspergillus niger). While the Synadenium glaucescens root proved to be a valuable precursor for producing effective antimicrobial sg-AgNPs, the introduction of sg-AgNPs into WSPs significantly impacted algal chlorophyll-a production and survival of ostracod population. These results shed light on the ecotoxicological risks of sg-AgNPs for WSPs organisms and highlight the suitability of algae and ostracods as model organisms for ecotoxicological studies in WSPs. PubDate: 2024-08-04
Abstract: Abstract Zinc oxide (ZnO) has been extensively used in areas such as optoelectronics, solar cells, and photocatalysis, among others. Modifying the optical properties of ZnO through different processes can potentially improve the performance of devices based on this material. This work presents the biosynthesis of ZnO by Beaucarnea gracilis leaf extract. The natural extract was mixed with zinc nitrate hexahydrate, Zn(NO3)2·6H2O resulting in a precipitate. Then the precipitate was calcined for 2 h at 400 °C, resulting in a yellowish-ZnO powder. Diffraction laser measurements showed a particle size average of 419 nm. The material exhibited high absorption in the UVA region with photoluminescence at 530 nm. Moreover, from the Tauc plot, a 2.7 eV band gap was obtained. Fourier Transform Infrared (FTIR) spectroscopy results confirmed the ZnO synthesis through 550 cm−1 and 667 cm−1 absorption peaks. To the best of our knowledge, this is the first time that ZnO has been synthesized by the endemic plant Beaucarnea gracilis. A major difference with conventional ZnO is significant reduction in the band gap from 3.3 eV to 2.7 eV. Moreover, the material exhibited photoluminescence at 530 nm by exposure to UV light which is attributed to oxygen vacancies. The increase in the optical absorbance in the UV–Visible region and the reduction in the optical band gap could enhance the performance in solar cells based on ZnO and in photocatalysis processes, allowing the use of visible light sources in addition to UV light. PubDate: 2024-08-02
Abstract: Abstract Responding to the pressing need to mitigate climate change effects due to fossil fuel consumption, there is a collective push to transition towards renewable and clean energy sources. However, the effectiveness of this move depends on an efficient energy storage system that surpasses current lithium-ion battery technology. The lithium-oxygen battery, having significantly high theoretical specific capacity compared to other systems, has emerged as a promising solution. However, the issues of poor cathode electrode conductivity and slow kinetics during discharge product formation have limited its practical applications. In this work, the first principles-based density functional theory was used to investigate the electrocatalytic properties of β12-borophene as a cathode electrode material for a high-performance lithium-oxygen battery. The adsorption energy, charge density distributions, Gibbs free energy changes, and diffusion energy barriers of lithium superoxide (LiO2) on β12-borophene were calculated. Our findings revealed several important insights: The adsorption energy was found to be − 3.70 eV, suggesting a strong tendency for the LiO2 to remain anchored to the material during the discharging process. The dynamics in the charge density distributions between LiO2 and the β12-borophene substrate exhibited complex behavior. The analysis of the Gibbs free energy changes of the reactions yielded an overpotential of − 1.87 V, this moderate value suggests spontaneous reactions during the formation of the discharge products. Most interestingly, the density of states and band structure analysis suggested the preservation of metallic properties and improved electrical conductivity of the material after the adsorption of LiO2. Additionally, β12-borophene has a relatively low diffusion energy barrier of 1.08 eV, implying effortless diffusion of the LiO2 and an increase in the rate of discharging process. Ultimately, the predicted electronic properties of β12-borophene, make it a strong candidate as a cathode electrode material for an efficient lithium-oxygen battery. PubDate: 2024-08-01
Abstract: Abstract Producing biomechanical energy from waste polymer has attracted lot of interest in this digital era as a number of benefits can be accounted for this including: (i) addressing challenges in the disposal of waste materials, and pollution (air, water, soil) caused by their presence in the atmosphere (ii) ensuring clean and affordable energy at low cost (iii) avoiding the hassle of constant battery replacement, charging, and long wires for charging, and so on. Here, the authors aim at the recycling of waste materials, especially polymers, keeping the 4R’s of effective waste management in mind. Energy harvesters based on triboelectric/piezoelectric effects convert energy from vibrational waves and material deformations into electricity. A hybrid energy harvester is constructed, with waste polymer to act as the tribo-active layer, nanomaterial coating is applied to induce piezoelectricity and Al as the electrode. The energy harvester demonstrated an output voltage enhancement of 266.166% for qualitative input conditions and 375.374%, 337.33%, and 287.308% for quantized input conditions (1 N, 1.5 N, 3 N respectively) when compared with the performance of raw waste polymer-based energy harvester. The developed device could drive low-power portable electronic devices, such as LEDs, calculator, digital watch, thermometer and pedometer. PubDate: 2024-08-01
Abstract: Abstract Random lasers operate without a traditional resonator cavity compared with traditional lasers, instead relying on multiple scattering events within a disordered medium to amplify light. Their emission spectrum and spatial characteristics are determined by the disorder within the medium rather than by specific resonant modes. ZnO nanostructures are ideal for random lasers due to their strong light emission properties and high refractive index, facilitating efficient light scattering and amplification within the disordered medium. Additionally, their wide bandgap and ability to support both optical and electrical pumping make them versatile for various laser applications. ZnO-based random lasers unlock a future beyond high-resolution displays and foldable phones due to their speckle-free emission and a knack for scattering. In medicine, they promise label-free cellular insights, targeted cancer treatments, and miniaturized diagnostics. However, the future of ZnO-based random lasers demands careful crafting. Scalability, cost, and longevity remain hurdles. This review first addresses the synthesis parameters controlling ZnO nanostructures as gain media in random lasers. Then, recent advances in random laser design and performance are discussed, followed by an explanation of the pumping mechanisms. The review concludes by addressing the potential applications of ZnO-based random lasers, including sensors, imaging, medical and display technologies. PubDate: 2024-07-22
Abstract: Abstract High-performance and room-temperature gas sensors are ideal for industrial production and environmental detection. Enhancing gas-detection capability by the use of highly conductive MXene in conjunction with metal oxide materials is a potential approach. In this work, we have prepared a gas-sensing composite device based on SnO2/V2CTx nanocomposites, which can be used to detect the concentration of SO2 gas at room temperature (~ 20 ℃). This paper modified two-dimensional (2D) V2CTx MXene with SnO2 nanoparticles by electrostatic binding method to synthesize SnO2/V2CTx composite nanomaterials. The experimental results show that at room temperature, the addition of SnO2 nanoparticles can markedly improve the gas-sensing response (from 66 to 83%) characteristics of pure V2CTx to SO2. The gas sensitivity of SnO2/V2CTx MXene nanocomposites can reach 83%, and its response/recovery time is 98 s/81 s under 10 ppm SO2. The gas-sensing composite devices made of SnO2/V2CTx composite nanomaterials also show good selectivity and application prospects. PubDate: 2024-07-16
Abstract: Abstract Recently, membrane bioreactors (MBRs) have emerged as a promising approach for sewage treatment because of their high efficiency in removing contaminants. However, they are prone to membrane-fouling and computational loading. To resolve these issues, this research article presents an innovative control strategy combining both artificial bee colony optimization (ABC) and recurrent neural network (RNN) to regulate the performance of MBR in sewage treatment. Initially, the influent wastewater data were collected and pre-processed using the regression imputation approach. RNN architecture was designed and trained using the pre-processed data to forecast the performance of the MBN system. Further, the ABC algorithm was applied to optimize the function of MBR by adjusting the control variables. The developed model was validated with the publically available wastewater treatment plan dataset and the effectiveness of the developed model was validated by performing intensive performance and comparative assessment. The performance evaluation demonstrates that the proposed methodology attained greater results of 98.59% effluent quality, 98.70% of nutrient removal efficiency, less computational time of 2.87 s, and a low membrane-fouling index of 1.23%. The comparative analysis illustrates that the presented approach achieved improved performances than the existing methodologies. PubDate: 2024-07-16
Abstract: Abstract Current chemotherapeutic treatments have severely limited effectiveness against tumors. Co-delivery of chemotherapeutic drugs and small interfering RNA (siRNA) in a nanoliposomal drug delivery system is known to selectively improve cytotoxicity against tumors. The current study aimed to achieve augmented combination therapy (Dasatinib-DST and siRNA targeting COL11A1 gene) against lung adenocarcinoma (LUAD) in vitro. The microbubble liposome (MB-LP)-based codelivery system (DST and COL11A1) used in this study was prepared using the thin film hydration method. The resulting codelivery system (MB-LP/DST/siRNA) average size and zeta potential were about 1611.5 nm and − 10.35 mV, respectively. Nevertheless, the average size of the MB-LP drug delivery system alone was 530 nm. The percentage encapsulation efficiency (% EE) of the combination drug (DST and COL11A1siRNA) in the MB-LP nanodelivery system was 62.9%. The surface morphology of the codelivery system (MB-LP/DST/siRNA) was analysed using a High-Resolution Scanning Electron Microscope (HR-SEM) and a High-Resolution Transmission Electron Microscopy (HR-TEM). Both confirmed the spherical shape of the MB-LP system. MTT-based proliferation analysis in vitro revealed that DST and COL11A1siRNA containing MB-LP codelivery system caused significant inhibition of cell proliferation against LUAD. This is the first study that suggests the co-delivery of the chemotherapeutic drug (DST) and COL11A1siRNA using the MB-LP drug delivery system facilitates an anti-proliferative effect against LUAD cells. Additionally, we also conclude that these prospective results strengthen the evidence on the potential of combination therapy (DST and COL11A1siRNA) against LUAD. PubDate: 2024-06-10
Abstract: Abstract In this study, we address the critical need for advanced theranostic drug delivery systems by synthesizing and characterizing surface-functionalized superparamagnetic iron oxide nanoparticles (SPIONs). Acyclovir is an effective antiviral drug with poor water solubility leading to limitations in its administrations and effectivity. Our investigation into the drug-loading capacity of acyclovir reveals that surface-functionalized SPIONs with an average size of 8.1 nm exhibit a notable increase in drug-loading capacity proportional to drug concentration. Specifically, at drug concentrations of 752.21 μg, 1774.32 μg, and 3799.09 μg, we achieved loading efficiencies and capacities of 40.89%, 51.62%, and 50.14% respectively. Alongside, they have high biocompatibility as observed from the hemolysis assay and MTT assay. Moreover, the multifunctionality of these SPIONs extends beyond drug delivery, as they demonstrate high relaxivity suitable for magnetic resonance imaging (MRI) studies at remarkably low concentrations in the micromolar range. Specifically, the relaxivity value (r2) for the said SPIONs was calculated to 10.99 L/mmol−s which is higher than many commercially used iron oxide-based contrast agents. The multifunctional attributes of these SPIONs position them as versatile and easily customisable platform for diverse therapeutic molecules. This study not only underscores the feasibility of utilizing surface-modified SPIONs as efficient carriers for acyclovir or other therapeutic molecules but also paves the way for evaluating the feasibility of next-generation theranostic materials for biomedical applications. PubDate: 2024-06-05
Abstract: Abstract The present study focuses on a facile phytosynthesis to develop C. amada-coated ZnO nanoparticles from zinc acetate dihydrate solution by using Talinum fructicosum leaf as reducing agent. The phenolic content of C. amada along with curcuminoid compounds (such as de- and bis-methoxy curcumin), function as a surface-active source to produce high-quality ZnO nanostructures. The X-ray diffraction (XRD), BET Surface area analysis (BET), X-ray photoelectron spectroscopy (XPS), UV–Visible spectral analysis (UV), Fourier transform infrared spectroscopy (FTIR), antimicrobial, antidiabetic, bovin serum albumin denaturation assay, electrochemical analysis (ES), photocatalytic degradation and catalytic reduction potential evaluation were used to characterize the phyto-synthesised ZnO nanoparticles. The XRD pattern exhibited a good nanocrystallinity with hexagonal wurtzite structure and an efficient band gap of 3.33 eV which further proved the ZnO nanoparticles to be a good semiconductor. FTIR analysis and XPS studies mutually prove the Zn–O bond formation; BET analysis confirmed the configuration of ZnO, with the surface area of 11.488 m2/g, which is mesoporous in nature and highlighted the significance of the porous morphology in SEM findings. The study specially focuses on illustrating the symmetric supercapacitor electrode based on ZnO nanoparticles with a superior specific capacitance value of 457 F g−1 (1 A g−1). The photodegradation of methylene blue and methyl orange dyes demonstrated a maximum degradation efficiency of 97 and 91%, respectively, achieved after 90 minutes of irradiation, emphasizing the influence of an increased concentration of biomolecules. Additionally, ZnO nanoparticles exhibited effective catalytic reduction potential on highly toxicious 4-nitrophenol to get reduced into less hazardious 4-aminophenol. The broad range of functionalities enhances the utility of biogenic ZnO nanoparticles and widens its scope for energy and environmental applications. PubDate: 2024-06-04
Abstract: Abstract This research investigates the synthesis of sodium alginate–iron oxide nanocomposites (SAL-Fe3O4) through the co-precipitation method, with a focus on the impact of gelation time. SAL-Fe3O4 nanocomposites were precipitated from Fe2(SO4)3 and FeSO4 under an alkaline medium in the presence of sodium alginate, maintaining a stoichiometric balance using a molar ratio of 1:2 for iron (III) Fe3+ to iron (II) Fe2+ ions precursors. Two types of SAL-Fe3O4 nanocomposites were prepared by varying the gelation time of sodium alginate to 3 and 24 h. Extensive characterization was performed using UV, FTIR, XRD and SEM with EDX analysis techniques to evaluate the properties of the nanocomposites. Fourier-Transformed infrared Spectroscopy (FTIR) analysis provided insights into the presence of sodium alginate on the SAL-Fe3O4 nanocomposite surface and the bonding characteristics within the polymer. X-ray diffraction (XRD) analysis was employed to determine lattices, phases, and preferred crystal orientations (texture) of the nanocomposites. Scanning Electron Microscope (SEM) was utilized to examine morphology, microstructures, dimensions, and size of the prepared nanocomposites. Energy-Dispersive X-ray (EDX) was used for the analysis of the elemental composition of the nanocomposites. Additionally, the catalytic efficiency of SAL-Fe3O4 nanocomposites was evaluated through the catalytic degradation of organic dyes using hydrogen peroxide (H2O2) as the oxidizing agent. The degradation processes were monitored by UV-visible spectrophotometry and the apparent rate constant (kapp), degradation time, percentage (%) degradation, degradation concentration and half-life values of different organic dyes were studied and compared, highlighting the influence of gelation time on the degradation efficiency. PubDate: 2024-05-31
Abstract: Abstract Nano-sized amorphous Iron (III) oxides have been a fascinating material for the scientific community owing to their widespread promising application in photocatalysis of water decontamination, due to high specific surface area and variable valency. Malachite green dye is a non-biodegradable organic pollutant known for its toxic effects on humans and aquatic organisms. In the present work, Fe2O3 was synthesized through Citrate–Nitrate Sol–Gel route and Syzygium cumini leaf extract mediated green method. The composition and physical nature of the synthesized iron oxides were confirmed using p-XRD, SEM-EDAX, XPS techniques. A comparative investigation of visible light degradation of malachite green dye was done using differently synthesized Fe2O3 at pH 8. The LCMS study exposed that the sol–gel Fe2O3 was highly efficient in transforming Malachite green (MG) into a no. of intermediates of low molecular weights, whereas green Fe2O3 revealed formation of both high and low molecular weight metabolites. In the light of the evidence derived from LCMS, a pathway has been proposed to highlight the absolute and sequential transformation of the dye to environmentally benign compounds. The study also disclosed the key role played by Iron oxide nanoparticles (IONPs), in the total mineralization of the dye to carbonates and nitrates that can be assimilated by plants and the decontaminated water can be engaged in agricultural practices. PubDate: 2024-05-15
Abstract: Abstract The study successfully synthesized nano-SiO2 and Nd2O3 materials applying as fertilizers for growth of the Paramignya trimera (Oliv.) Guill. (Rutaceae), a well-known medicinal plant in Vietnam and Thailand for treatment of numerous cancers. The cultivation results indicated that the individual uses of nano-SiO2 and Nd2O3, respectively, induced stem and root growth of the P. trimera. Therefore, applications of nano-Nd2O3 and SiO2 mixture exhibited synergic effects to greatly enhance stem and root growth of the P. trimera. The plant height, root length, stem and root weight of the mixture Nd2O3 and SiO2 exposed plant were greatly higher than those of the individual nano-material exposed plants. The extraction experiments indicated that ostruthin, a valuable medicinal substance, accumulated in the roots of the P. trimera rather than in its stems. The ostruthin content in the root of the Nd2O3 exposed P. trimera was also greatly higher than those in the control and SiO2-exposed plants. This indicated that the Nd2O3 nano-materials not only induced root growth but also aided the accumulation of ostruthin in the roots of the P. trimera. This open new era on combination application of nano-SiO2 and Nd2O3 for growth of the P. Trimera as well as other medicinal plants. PubDate: 2024-05-09
Abstract: Abstract Recent research has focused on zinc oxide nanoparticles (ZnO NPs) in culture and in vivo cell lines due to their cytotoxic potential. In addition, ZnO has garnered considerable interest in cancer therapy. Our objective was to assess the cytotoxicity of ZnO NPs on cell lines from the ovary, prostate, and bone (SK-OV-3, PC3, and Saos-2). ZnO nanoparticles were used to culture SK-OV-3, PC3, and Saos-2 cancer cells at concentrations of 0, 20, 40, 80, 160, and 320 ppm. Cancer cells were subsequently incubated for 24 and 48 h. Using the MTT assay, the apoptosis and cytotoxicity of cells were quantified. ZnO NPs of both diameters exhibited cytotoxic properties. Regardless of the lowest concentration, the extent of the cytotoxic effect on apoptosis is 32.55 nm. A rise in ZnO NP concentration was associated with an increase in apoptosis and a decrease in viability. The findings of this study suggest that the examined cancer types exhibited cytotoxic effects upon exposure to ZnO NPs, as compared to the control group that was not exposed. Furthermore, the maximum cytotoxic effects were observed at higher concentrations. It seems that the observed increase in cytotoxicity may not be significantly altered. PubDate: 2024-05-08
Abstract: Abstract In the current paper, hematite (α Fe2O3) nanoparticles (NPs) were prepared by the chemical co-precipitation method. These synthesized nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), Raman spectroscopy, and vibrating sample magnetometry (VSM). The XRD studies for the nanoparticles revealed rhombohedral symmetry with space group: R3c (167), and the particle size is about 33.34 nm. The morphological studies carried out by SEM indicated that these prepared samples have a spherical morphology with some porosity. The specific surface area of this sample was calculated by the Brunauer–Emmett–Teller (BET) technique. FTIR spectroscopy confirms the Fe–O and O–Fe–O vibrations corresponding to stretching at the expected positions (520 cm−1) related to the structure. From Raman data, modes corresponding to α-Fe2O3 are seen. From DC magnetisation studies, the current sample shows ferrimagnetic behavior. In addition, the value of Ms is 1.027 and value of Mr is 322.787×10–6. Further nanofluids of these nanoparticles with different concentrations of transformer oil were prepared. The performance of this nanofluid as a coolant in transformer oil was also studied. The 0.2 g/l concentration shows the maximum improvement in breakdown voltage. Hence, under optimal conditions, these ferrofluids can perform well for insulating purposes. PubDate: 2024-05-01
Abstract: Abstract The growing demand for alternative energy sources has driven significant developments in novel device designs that generate energy through light conversion. Among the different types of solar cells, dye-sensitized solar cells (DSSCs) have emerged as one of the most promising options due to their potential to approach theoretical efficiencies of up to 46%. Although current real-world efficiencies typically range from 10 to 14% that generates numerous opportunity areas for DSSC improvement through different strategies, including the development of innovative solar cell structures, new growth or synthesis processes, and the integration of novel oxide materials. Titanium dioxide is one of the most significant oxide semiconductors and its interest has notably increased in recent years due to its unique optoelectronic properties and its applications in dye-sensitized solar cells (DSSCs). In DSSCs, photoelectrodes play a vital role in photoconversion. Photoelectrodes for DSSCs require blocking and porous oxide semiconductor layers to prevent electron leakage and enhance efficiency. Typically, these layers are produced through various techniques and steps, complicating the fabrication process and extending processing times. Therefore, in this work, we propose a one-step method to simultaneously grow TiO2-blocking and porous layers for DSSC photoelectrodes at relatively low temperatures. Characterization results using FESEM/EDS, XRD, and UV–visible spectroscopy confirm the growth of both compact and porous layers. These layers are composed of the anatase particulate deposits (100–200 nm) with acceptable grain sizes (17.3–84.1 nm) and exhibit a suitable band gap (3.14 eV). Finally, TiO2 films were applied in DSSCs as photoelectrodes and showed promising performance in solar cell prototypes. PubDate: 2024-04-26
Abstract: Abstract Functional nanoferrites are attracting interest in photocatalytic applications due to their intriguing and excellent optical and magnetic properties. In that order, as suitable adsorbents for wastewater treatment, graphene-based nanoferrites can be tuned. In this article, ZnFe2O4/GO nanocomposites have been prepared to study the structural, optical, magnetic, and photocatalytic properties through investigational (experimental) results and theoretical insights. Further, the synthesized nanocomposites fall under the mesoporous range with an average crystalline size of around 15–18 nm with good colloidal stability. Spherically agglomerated morphology has been observed by FE-SEM analysis. Magnetic characterizations were done by vibrating sample magnetometer (VSM) with superparamagnetic behavior at room temperature (RT). Optical insights reveal that the samples exhibit good photocatalytic properties with a degradation rate of 85.8% with methylene blue (MB) organic pollutant. Hence, this article aims to study the properties of prepared ZnFe2O4/GO nanocomposites through a detailed theoretical discussion of density functional theory (DFT). PubDate: 2024-04-09
Abstract: Abstract Polymer nanomaterials are an emanating area of research incited by the wide range of applications in solar cells, catalysis, sensors, drug delivery, electronics, bioimaging, etc., due to their outstanding mechanical, optical and electronic properties. Small dimensions in the nanometre range and a high surface-to-volume ratio of polymer nanomaterials possess distinctive features compared to bulk counterparts. In this work, doped polyvinyl alcohol (PVA) nanostructures were prepared by a one-step hydrothermal synthesis method and studied the morphological, structural and optical properties. The attained nanomaterials exhibit a spherical shape, and their average size was calculated as 3.98 nm by HR-TEM analysis. The obtained nanomaterials are dissolved in N,N-dimethyl formamide (DMF) solvent and can be employed for optoelectronic devices due to their amorphous structure and direct bandgap. Green luminescence was observed under UV light, and non-biocidal activity showed against Escherichia coli, Pseudomonas fluorescens, E. coli DH5α, Bacillus subtilis and Staphylococcus aureus. PubDate: 2024-04-04
Abstract: Abstract The spectroscopic characteristics of the common flower Clitoria ternatea are explored for the first time. When excited, the extract shows two emission crests at 436 and 663 nm corresponding to anthocyanin delphinidin and betalains betacyanin, respectively. For practical utility, the extract is made into thin films, giving a broad emission band from 450 to 530 nm. But by this line, the luminescence spectra showed a falloff with time, through a decay rate of 0.2463 cps/h owing to aging. An anti-oxidizing agent (Y2O3)–extract complexes with different extract concentrations (1–5 ml) under different heating conditions (100–200 °C) are produced to overcome this scenario. The XRD and Raman spectra depict the fruitful complex formation in cubic structure with space group Ia3. Using UV–visible info, the bandgap is computed to be 2.381 eV. When Y2O3 and Clitoria extract are taken in the same measure, decent emission bands around 450–550 nm and 630–690 nm are observed by the FRET mechanism; giving a ninefold increment in PL intensity with CIE coordinates in the vicinity of near-white light. The trials are repeated numerous times to ensure reproducibility and the outcomes are compared with the conventional Y2O3:Dy3+-doped system, showing prime results by the Y2O3:Clitoria complex (1:1, 100 °C). This unprecedented investigation concludes the enhanced photoluminescence from Clitoria extract, which could replace conventional rare earth doping and provide a novel methodology for designing and fabricating lighting devices. PubDate: 2024-04-04
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