A short review on recent progress of Bi/semiconductor photocatalysts: The role of Bi metal |
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| Institution: | 1. Department of Chemistry, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People’s Republic of China;2. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, People’s Republic of China;1. Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China;2. Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China;3. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China;2. Department of Bioengineering and Environmental Science, Changsha University, Changsha 410003, Hunan, China;1. Department of Environmental Science & Engineering, North China Electric Power University, Baoding 071003, China;2. School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China;3. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China;1. Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China;2. School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, PR China;1. School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, PR China;2. State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, PR China;3. Key Laboratory of Degraded and Unused Land Consolidation Engineering, The Ministry of Natural Resources of China, Xi''an 710075, PR China;4. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China;5. Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China |
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| Abstract: | Bi/semiconductor photocatalysts have extensively been applied in the production of hydrogen, CO2 reduction and environmental remediation in recent years. This short review summarizes the role of Bi metal as a plasma photocatalyst and cocatalyst. As a cocatalyst, Bi metal can be electron/hole trappers, charge transfer mediators, or oxygen vacancy coordinators. In addition, the preparation methods of the Bi/semiconductor photocatalysts are also reviewed. Challenges and future research directions related to Bi/semiconductor photocatalysts are discussed and summarized, including the use of advanced characterization techniques to refine the reaction mechanism, the difficulties of preparing Bi single atom catalyst, and the improvement of the reduction ability of Bi-based photocatalysts. This review helps understand the reaction mechanisms of the composite photocatalytic systems containing Bi metal and proposes new perspectives for designing the photocatalysts which can control air pollution via a reductive process. |
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| Keywords: | Bi metal Plasma photocatalyst Cocatalyst Electron/hole trappers Charge transfer medium |
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