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Nanostructured WO3/BiVO4Heterojunction Films for Efficient Photoelectrochemical Water Splitting
Abstract
We report on a novel heterojunction WO(3)/BiVO(4) photoanode for photoelectrochemical water splitting. The heterojunction films are prepared by solvothermal deposition of a WO(3) nanorod-array film onto fluorine-doped tin oxide (FTO) coated glass, with subsequent deposition of a low bandgap, 2.4 eV, visible light responding BiVO(4) layer by spin-coating. The heterojunction structure offers enhanced photoconversion efficiency and increased photocorrosion stability. Compared to planar WO(3)/BiVO(4) heterojunction films, the nanorod-array films show significantly improved photoelectrochemical properties due, we believe, to the high surface area and improved separation of the photogenerated charge at the WO(3)/BiVO(4) interface. Synthesis details are discussed, with film morphologies and structures characterized by field emission scanning electron microscopy and X-ray diffraction.
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Metadata
- Authors
- Su, J., Guo, L., Bao, N., & Grimes, C. A.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-05-11
- Volume
- 11
- Issue
- 5
- Pages
- 1928-1933
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2094137047
- Cited by
- 1,054
- References
- 1
- FWCI
- 22.86
- Type
- journal article
- Language
- en
- Open access
- closed
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