Journal article
Efficient BiVO4 Photoanodes by Postsynthetic Treatment: Remarkable Improvements in Photoelectrochemical Performance from Facile Borate Modification
Angewandte Chemie, Vol.131(52), pp.19203-19209
2019
Abstract
Water-splitting photoanodes based on semiconductor materials typically require a dopant in the structure and co-catalysts on the surface to overcome the problems of charge recombination and high catalytic barrier. Unlike these conventional strategies, a simple treatment is reported that involves soaking a sample of pristine BiVO4 in a borate buffer solution. This modifies the catalytic local environment of BiVO4 by the introduction of a borate moiety at the molecular level. The self-anchored borate plays the role of a passivator in reducing the surface charge recombination as well as that of a ligand in modifying the catalytic site to facilitate faster water oxidation. The modified BiVO4 photoanode, without typical doping or catalyst modification, achieved a photocurrent density of 3.5 mA cm-2 at 1.23 V and a cathodically shifted onset potential of 250 mV. This work provides an extremely simple method to improve the intrinsic photoelectrochemical performance of BiVO4 photoanodes.
Details
- Title
- Efficient BiVO4 Photoanodes by Postsynthetic Treatment: Remarkable Improvements in Photoelectrochemical Performance from Facile Borate Modification
- Authors
- Qijun Meng (Author) - KTH Royal Institute of Technology, SwedenBiaobiao Zhang (Corresponding Author) - KTH Royal Institute of Technology, SwedenLizhou Fan (Author) - KTH Royal Institute of Technology, SwedenHaidong Liu (Author) - Uppsala University, SwedenMario Valvo (Author) - Uppsala University, SwedenKristina Edstrom (Author) - Uppsala University, SwedenMaria Cuartero (Author) - KTH Royal Institute of Technology, SwedenRoland De Marco (Author) - University of the Sunshine CoastGaston A Crespo (Author) - KTH Royal Institute of Technology, SwedenLicheng Sun (Author) - KTH Royal Institute of Technology, Sweden
- Publication details
- Angewandte Chemie, Vol.131(52), pp.19203-19209
- Publisher
- Wiley - V C H Verlag GmbH & Co. KGaA
- DOI
- 10.1002/anie.201911303
- ISSN
- 0044-8249
- Organisation Unit
- University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
- Language
- English
- Record Identifier
- 99450657902621
- Output Type
- Journal article
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- Domestic collaboration
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- Web Of Science research areas
- Chemistry, Multidisciplinary
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Source: InCites