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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Elaborately Modified BiVO4 Photoanodes for Solar Water Splitting

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Title
Elaborately Modified BiVO4 Photoanodes for Solar Water Splitting
Author
Kim, Jin HyunLee, Jae Sung
Issue Date
2019-05
Publisher
Wiley-VCH Verlag
Citation
ADVANCED MATERIALS, v.31, no.20, pp.1806938
Abstract
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 (Lp) of ≈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.
URI
https://scholarworks.unist.ac.kr/handle/201301/27041
URL
https://onlinelibrary.wiley.com/doi/10.1002/adma.201806938
DOI
10.1002/adma.201806938
ISSN
0935-9648
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