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Venugopal A, Kas R, Hau K, Smith WA. Operando Infrared Spectroscopy Reveals the Dynamic Nature of Semiconductor-Electrolyte Interface in Multinary Metal Oxide Photoelectrodes. J Am Chem Soc 2021; 143:18581-18591. [PMID: 34726398 PMCID: PMC8587602 DOI: 10.1021/jacs.1c08245] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Detailed knowledge about the semiconductor/electrolyte interface in photoelectrochemical (PEC) systems has been lacking because of the inherent difficulty of studying such interfaces, especially during operation. Current understandings of these interfaces are mostly from the extrapolation of ex situ data or from modeling approaches. Hence, there is a need for operando techniques to study such interfaces to develop a better understanding of PEC systems. Here, we use operando photoelectrochemical attenuated total reflection Fourier transform infrared (PEC-ATR-FTIR) spectroscopy to study the metal oxide/electrolyte interface, choosing BiVO4 as a model photoanode. We demonstrate that preferential dissolution of vanadium occurs from the BiVO4/water interface, upon illumination in open-circuit conditions, while both bismuth and vanadium dissolution occurs when an anodic potential is applied under illumination. This dynamic dissolution alters the surface Bi:V ratio over time, which subsequently alters the band bending in the space charge region. This further impacts the overall PEC performance of the photoelectrode, at a time scale very relevant for most lab-scale studies, and therefore has serious implications on the performance analysis and fundamental studies performed on this and other similar photoelectrodes.
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Affiliation(s)
- Anirudh Venugopal
- Materials for Energy Conversion and Storage (MECS), Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Delft, 2629HZ, The Netherlands
| | - Recep Kas
- Renewable and Sustainable Energy Institute (RASEI), University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Kayeu Hau
- Materials for Energy Conversion and Storage (MECS), Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Delft, 2629HZ, The Netherlands
| | - Wilson A Smith
- Materials for Energy Conversion and Storage (MECS), Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Delft, 2629HZ, The Netherlands.,Renewable and Sustainable Energy Institute (RASEI), University of Colorado Boulder, Boulder, Colorado 80303, United States
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Zhang Y, Wang L, Xu X. A bias-free CuBi 2O 4–CuWO 4 tandem cell for solar-driven water splitting. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00088h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An all-copper-based oxide tandem cell based on CuBi2O4 and CuWO4 films has been fabricated which shows promising water splitting photocurrents under simulated solar insolation without an external bias.
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Affiliation(s)
- Yuwei Zhang
- Putuo People's Hospital
- Tongji University
- Shanghai
- China
- Shanghai Key Lab of Chemical Assessment and Sustainability
| | - Lina Wang
- Putuo People's Hospital
- Tongji University
- Shanghai
- China
- Shanghai Key Lab of Chemical Assessment and Sustainability
| | - Xiaoxiang Xu
- Putuo People's Hospital
- Tongji University
- Shanghai
- China
- Shanghai Key Lab of Chemical Assessment and Sustainability
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Tao X, Shi W, Zeng B, Zhao Y, Ta N, Wang S, Adenle AA, Li R, Li C. Photoinduced Surface Activation of Semiconductor Photocatalysts under Reaction Conditions: A Commonly Overlooked Phenomenon in Photocatalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00462] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xiaoping Tao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
- University of Science and Technology of China, School of Chemistry and Materials Science, Hefei, 230026, China
| | - Wenwen Shi
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bin Zeng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yue Zhao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Na Ta
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
| | - Shengyang Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
| | - Abraham Abdul Adenle
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rengui Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
| | - Can Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China
- University of Science and Technology of China, School of Chemistry and Materials Science, Hefei, 230026, China
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