A review on bismuth-based composite oxides for photocatalytic hydrogen generation |
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| Affiliation: | 1. Instituto de Química, Universidade Federal da Bahia, Campus de Ondina, CEP 40170-290 Salvador, BA, Brazil;2. Instituto Nacional de Ciência e Tecnologia de Energia e Ambiente INCT-E&A, Universidade Federal da Bahia, Campus de Ondina, CEP 40170-290 Salvador, BA, Brazil;3. Instituto de Física, Universidade Federal da Bahia, Campus de Ondina, CEP 40170-290 Salvador, BA, Brazil;4. Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden;1. Lehrstuhl für Technische Chemie, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany;2. Institut für Technische Chemie, Leibniz Universität Hannover, Callinstr. 9, 30167 Hannover, Germany;3. Institut für Chemie, Lehrstuhl Technische Chemie, Carl-von-Ossietzky Universität Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany;1. Key Laboratory of Marine Chemistry Theory and Technology (Ministry of Education), College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;2. Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada;1. College of Environmental Science and Engineering, Hunan University, Lushan South Road, Yuelu District, Changsha 410082, PR China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Lushan South Road, Yuelu District, Changsha 410082, PR China |
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| Abstract: | Bismuth-based composite oxides are always considered the best visible-light photocatalysts for oxygen production. However, they are failed to photocatalytic reduce the hydrogen from water, due to their lower conduction band made up by Bi 6p and O 2p. Thus, it is significant to modulate their levels of the conduction and valence bands satisfying the redox potential for both H+/H2 and O2/H2O, which will directly lead to discovering new visible-light materials for photocatalytic hydrogen generation. Recent years, some modified bismuth-based composite oxides have been reported to achieve photocatalytic hydrogen production. In this paper, a review of photocatalytic hydrogen generation by bismuth-based composite oxides is presented, mainly including energy band engineering, Z-scheme overall water splitting, and strategies for photocatalytic activity improvement. |
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| Keywords: | Photocatalyst Bismuth-based composite oxides Water splitting |
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