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Morphological expedient flower like nanostructures WO3–TiO2 nanocomposite material and its multi applications
摘要： The prepare WO3 -TiO2 nanocomposite material has been successfully achieved precipitation route and sonication technique. The experimental results expose that 400 °C of WO3–TiO2 nanocomposite material exhibited the higher photoatalytic activity for the degradation of azo dye Acid block 1(AB 1) under UV-Light. This nanocomposite material was characterized by High-resolution scanning electron microscopy (HR-SEM) with elementary dispersive X-ray (EDX), High-resolution transmission electron microscopy (HR-TEM), XRD analysis, photoluminescence spectroscopy (PL), UV–Vis DRS and BET. The HR-SEM images reveal that most nanoflower are linked together by an edge-to-flat-surface combination. EDX studies that Ti, O and W are in higher mediation. The HR-TEM images indicate nanorod structure. As a reaction of this nanoparticle was found to be stable and reusable. This nanoparticle was antibacterial activity and electrochemical activity showed highest activity by WO3–TiO2 compared that of TiO2 nanocomposite material was reported.
关键词： UV-Light,HR-TEM,Antibacterial activity,Nanoflower,Photocatalytic activity,Electrochemical activity
更新于2025-09-23 15:21:21
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Sustainable Scientific Advancements modified Ag2O-ZnO thin films characterization and application of photocatalytic purification of carcinogenic dye in deionizer water and contaminated sea water solutions and Synthetic, Natural based Dye-Sensitized Solar Cells
摘要： The manuscript studied the preparation of ZnO as well as Ag2O-ZnO thin films deposited on glass substrates by spray pyrolysis approach at 500oC. The photocatalytic activity of Ag2O-ZnO nanocomposite material was studied via the Photodegradation reaction of Rhodamine B (Rh B) dye under UV-light irradiation in Deionizer water which shows high activity as compared by Contamination of sea water. The Zinc was Zincacetylacetonate (Zn C10 H14 O5) at the atomic concentration and then dissolved in the ethanol and Ag NO3 (0.1 M) dissolved in ethanol. The effect of silver Oxide - Zinc Oxide Nanocomposite material on the structural, surface morphological, electrical and optical properties of Ag2O-ZnO thin films were studied. HR-SEM and HR-TEM image shows exposed that the surface morphology of the films nanoflower shaped structure. The presence of Silver, Zinc and Oxygen are confirmed the presence of peaks, using EDS analysis. X-ray diffraction (XRD) patterns accepted the successful growth of high quality thin films which is polycrystalline nature. The PL analysis shows in Ag2O-ZnO is certified to the low recombination of electron-hole pairs by transfer of electrons and holes between ZnO and UV-Vis DRS analysis. The photocatalytic activity of Ag2O-ZnO nanocomposite material was studied from Photodegradation study of Rhodamine B (Rh B) dye under UV-light irradiation of Deionizer water was high activity that Contamination of sea water. As a reaction of this the material was found to be stable and reusable, which extends to a high antibacterial activity and the electrochemical study from synthetic based and Natural based DSSCS analysis showed increased current is short circuit by Ag2O-ZnO thin film nanocomposite material was industrial applications.
关键词： Spray pyrolysis,Photocatalytic activity,Electrochemical activity,Antibacterial activity
更新于2025-09-16 10:30:52
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Hierarchical NiO@NiS@graphene nanocomposite as a sustainable counter electrode for Pt free dye-sensitized solar cell
摘要： Recent studies in DSSC has been concentrated on developing counter electrode with low cost materials which has high power conversion efficiency, as well as high catalytic property. NiO has been studied as CE for high short circuit current in DSSC because of its wide bandgap. In this work nickel oxide@nickel sulfide@graphene (NiO@NiS@G) nanocomposite was synthesized by hydrothermal method. Structural composition of NiO@NiS@G nanocomposite was revealed by X-ray diffraction (XRD) and confirm the formation of NiO@NiS@G nanocomposites. Raman spectroscopy was the most effective tool for the analysis of carbon-based materials. The D band and G band of Raman spectrum confirmed the conversion of graphene (G) from graphene oxide (GO). X-ray photoelectron spectroscopy (XPS) shows the presence of Ni, O, C and S atoms in the composition. The morphology analysis revealed the formation of NiO@NiS nanoplates anchored on the surface of the graphene sheets. The as-synthesized materials were coated on FTO (fluorine-doped tin oxide) substrate by spray coat technique and their catalytic properties were studied. The electrochemical activity (peak separation Epp) of NiO@NiS@G nanocomposite (391 mV) was high compared to NiO@NiS (496 mV) and exhibited excellent stability compared with NiO@NiS. Further, the charge transfer resistance of commercial Pt, NiO@NiS@G, and Nio@NiS has been measured by Electrochemical Impedance Spectroscopy (EIS), where corresponds resistance values of CEs are 15.7, 23.2, and 36.8 Ω, respectively. The efficiency of a solar cell with NiO@NiS@G is 2.10 % where it high compared with NiO@NiS (1.68%).
关键词： NiO@NiS@G,Counter electrode,Electrochemical activity,graphene,nanoplates
更新于2025-09-16 10:30:52