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He B, Cao Y, Lin K, Wang Y, Li Z, Yang Y, Zhao Y, Liu X. Strong Interactions between Au Nanoparticles and BiVO 4 Photoanode Boosts Hole Extraction for Photoelectrochemical Water Splitting. Angew Chem Int Ed Engl 2024:e202402435. [PMID: 38566410 DOI: 10.1002/anie.202402435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/04/2024]
Abstract
Strong metal-support interaction (SMSI) is widely proposed as a key factor in tuning catalytic performances. Herein, the classical SMSI between Au nanoparticles (NPs) and BiVO4 (BVO) supports (Au/BVO-SMSI) is discovered and used innovatively for photoelectrochemical (PEC) water splitting. Owing to the SMSI, the electrons transfer from V4+ to Au NPs, leading to the formation of electron-rich Au species (Auδ-) and strong electronic interaction (i.e., Auδ--Ov-V4+), which readily contributes to extract photogenerated holes and promote charge separation. Benefitted from the SMSI effect, the as-prepared Au/BVO-SMSI photoanode exhibits a superior photocurrent density of 6.25 mA cm-2 at 1.23 V versus the reversible hydrogen electrode after the deposition of FeOOH/NiOOH cocatalysts. This work provides a pioneering view for extending SMSI effect to bimetal oxide supports for PEC water splitting, and guides the interfacial electronic and geometric structure modulation of photoanodes consisting of metal NPs and reducible oxides for improved solar energy conversion efficiency.
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Affiliation(s)
- Bing He
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, 430200, Wuhan, P. R. China
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Yu Cao
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, 430200, Wuhan, P. R. China
| | - Kaijie Lin
- Faculty of Materials Science and Chemistry, China University of Geosciences, 430074, Wuhan, P. R. China
| | - Yang Wang
- Faculty of Materials Science and Chemistry, China University of Geosciences, 430074, Wuhan, P. R. China
| | - Zhen Li
- Faculty of Materials Science and Chemistry, China University of Geosciences, 430074, Wuhan, P. R. China
| | - Yingkui Yang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, 430200, Wuhan, P. R. China
| | - Yanli Zhao
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Xueqin Liu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, 430200, Wuhan, P. R. China
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