Synthesis of BiVO4-GO-PVDF nanocomposite: An excellent,newly designed material for high photocatalytic activity towards organic dye degradation by tuning band gap energies |
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| Affiliation: | 1. Key Laboratory of Green Process and Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;1. Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam 356-706, Republic of Korea;2. Korea Institutes of Ceramic Engineering and Technology, Soho-ro, Jinju-Si, Gyeongsangnam-do, Republic of Korea;1. School of Occupational Safety and Health, Chung Shan Medical University, Taichung, 402, Taiwan, ROC;2. Department of Occupational Medicine, Chung Shan Medical University Hospital, Taichung, 402, Taiwan, ROC;3. The University of Sydney, School of Chemical and Biomolecular Engineering, Darlington, New South Wales, 2006, Australia;4. Department of Chemical Engineering and Applied Chemistry, University of Tabriz, Tabriz, Iran;1. School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan 453007, PR China;2. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China;3. Center for Nanochemistry (CNC), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China |
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| Abstract: | BiVO4-GO-PVDF (PVDF = Polyvinylidene Difluoride) photocatalyst is successfully synthesized by ultrasonication method and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy techniques. Morphology of BiVO4-GO-PVDF looks like a human embryo embedded inside an amniotic sac. Photocatalytic performance of BiVO4-GO-PVDF for decolorization of methylene blue is investigated. BiVO4-GO-PVDF system reveals enhanced photocatalytic activity degradation of methylene blue (MB), Rhodamine B (RhB) & Safranin-O (SO) in water under visible light irradiation as compared to the pure BiVO4 catalyst, BiVO4 & PTFE decorated on the graphene sheet. The experimental result reveals that the covering of graphene sheets in this composite catalyst enhances photocatalytic performance under visible light. This enhanced activity is mainly attributed to effective quenching of the photogenerated electron-hole pairs confirmed by photoluminescence spectra. Trapping experiments of radicals and holes were conducted to detect reactive species generated in the photocatalytic system, experimental results revealed that direct hole oxidation reaction is obviously dominant during photocatalytic reactions on the BiVO4-GO-PVDF system. |
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| Keywords: | Graphene oxide MethylEne blue Photocatalysis |
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