Morphological evolution and visible light-induced degradation of Rhodamine 6G by nanocrystalline bismuth tungstate prepared using a template-based approach |
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| Institution: | 1. Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil;2. Departamento de Física, Universidade Federal do Ceará, Campus do Pici, 65455-900, Fortaleza, CE, Brazil;3. Instituto de Química, UNESP?Universidade Estadual Paulista, 14800-900 Araraquara, SP, Brazil;1. College of Physics and Electronic Information, Anhui Key Laboratory of Energetic Materials, Huaibei Normal University, Huaibei 235000, PR China;2. Key Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, PR China;3. Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 23003, PR China;1. College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;2. School of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China |
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| Abstract: | The cleaning of water contaminated with organic dyes is a crucial problem nowadays. The search for good catalysts is intense, and bismuth tungstates have attracted a lot of attention because of their catalytic properties which are related to their crystal structure and morphology. In this study, we show that Bi2WO6 (BWO) crystals synthesized by the surfactant-assisted hydrothermal method create a different morphology than non-assisted crystals. With the assistance of the PVP surfactant, even the BWO crystalline structure could change, crystallizing into a high-symmetry metastable phase. These changes in morphology imply a decrease in BWO catalytic activity, which shows that insightful control of BWO synthesis is necessary to improve the BWO properties. |
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| Keywords: | Surfactants Photodegradation |
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