期刊
ADVANCED MATERIALS
卷 31, 期 20, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201806938
关键词
bismuth vanadate; multiple modifications; photoelectrochemical cells; photoelectrodes; solar water splitting
类别
资金
- Basic Science Grant - Ministry of Science and ICT, Republic of Korea [NRF-2018R1A2A1A05077909]
- Climate Change Response Project - Ministry of Science and ICT, Republic of Korea [2015M1A2A2074663]
- Korea Center for Artificial Photosynthesis (KCAP) - Ministry of Science and ICT, Republic of Korea [2009-0093880]
- Korea-China Key Joint Research Program - Ministry of Science and ICT, Republic of Korea [2017K2A9A2A11070341]
- Ministry of Trade, Industry and Energy, Republic of Korea [10050509, KIAT N0001754]
Photoelectrochemical (PEC) cells for solar-energy conversion have received immense interest as a promising technology for renewable hydrogen production. Their similarity to natural photosynthesis, utilizing sunlight and water, has provoked intense research for over half a century. Among many potential photocatalysts, BiVO4, with a bandgap of 2.4-2.5 eV, has emerged as a highly promising photoanode material with a good chemical stability, environmental inertness, and low cost. Unfortunately, its charge transport properties are modest, at most a hole diffusion length (L-p) of approximate to 70 nm. However, recent rapid developments in multiple modification strategies have elevated it to a position as the most promising metal oxide photoanode material. This review summarizes developments in BiVO4 photoanodes in the past 10 years, in which time it has continuously broken its own performance records for PEC water oxidation. Effective modification techniques are discussed, including synthesis of nanostructures/nanopores, external/internal doping, heterojunction fabrication, surface passivation, and cocatalysts. Tandem systems for unassisted solar water splitting and PEC production of value-added chemicals are also discussed.
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