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Liu Y, Gong M, Hu J, Qu J, Li Q, Zhang Z, Sun W, Yang X, Li CM. Revisiting the photocharging effect on the BiVO 4 (010) surface by identifying the charge reaction kinetics. Chem Commun (Camb) 2024; 60:8880-8883. [PMID: 39083014 DOI: 10.1039/d4cc03263b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
The alteration of intermediates on the (010) facet of BiVO4 leads to variations in charge accumulation numbers before overcoming the rate-determining step, which accounts for the enhanced charge transfer for oxygen evolution. This discovery provides insights into the photocharging effect and the photoelectrochemical reaction mechanism.
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Affiliation(s)
- Yanjie Liu
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China.
| | - Meiying Gong
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China.
| | - Jundie Hu
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China.
| | - Jiafu Qu
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China.
| | - Qingqing Li
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China.
| | - Zhichao Zhang
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China.
| | - Wei Sun
- Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, P. R. China
| | - Xiaogang Yang
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China.
| | - Chang Ming Li
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China.
- Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, P. R. China
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Chemical Kinetics of Serial Processes for Photogenerated Charges at Semiconductor Surface: A Classical Theoretical Calculation. Catal Letters 2023. [DOI: 10.1007/s10562-022-04267-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Jin J, Hu J, Qu J, Cao G, Lei Y, Zheng Z, Yang X, Li CM. Reaction Kinetics of Photoelectrochemical CO 2 Reduction on a CuBi 2O 4-Based Photocathode. ACS APPLIED MATERIALS & INTERFACES 2022; 14:17509-17519. [PMID: 35385644 DOI: 10.1021/acsami.2c02205] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The CO2 reduction reaction (CO2RR) is an essential step in natural photosynthesis and artificial photosynthesis to provide carbohydrate foods and hydrocarbon energy in the carbon-neutral cycle. However, the current solar conversion efficiencies and/or product selectivity of the CO2RR are very sluggish due to its complicated multiple-step charge transfer reactions. Here, we systematically investigate the charge transfer reaction rate during CO2 reduction on CuBi2O4 photocathodes, where the surface is modified with 3-aminopropyltriethoxysilane (APTES). We discover that the surface amine group increases the charge separation rate, significantly enhancing the surface charge transfer reaction rate. However, the surface acidity has less influence on the first-order reaction, indicating that a rate-determining step (RDS) exists in the early stage of the photoelectrochemical cell (PEC) processes. Moreover, the intensity-modulated photocurrent spectroscopy (IMPS) confirms that both surface charge transfer and the recombination rate on APTES-coated CuBi2O4 are larger than bare CuBi2O4 while possessing comparable charge transfer efficiencies. Overall, the surface charge transfer reactions under the PEC condition require designing more effective nanostructured photoelectrodes and powerful characterization methods to intrinsically increase the charge separation and transfer rate while reducing the recombination rate.
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Affiliation(s)
- Jiaqi Jin
- Institute of Advanced Cross-field Science, College of Life Science, Qingdao University, Qingdao 266071, P. R. China
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
| | - Jundie Hu
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
| | - Jiafu Qu
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
| | - Guangming Cao
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
- School of Physics and Technology, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
| | - Yan Lei
- Key Laboratory for Micro-Nano Energy Storage and Conversion Materials of Henan Province, Xuchang University, 88 Bayi Road, Xuchang, Henan 461000, P. R. China
| | - Zhi Zheng
- Key Laboratory for Micro-Nano Energy Storage and Conversion Materials of Henan Province, Xuchang University, 88 Bayi Road, Xuchang, Henan 461000, P. R. China
| | - Xiaogang Yang
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
| | - Chang Ming Li
- Institute of Advanced Cross-field Science, College of Life Science, Qingdao University, Qingdao 266071, P. R. China
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
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