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Deng Y, Liu W, Xu R, Gao R, Huang N, Zheng Y, Huang Y, Li H, Kong XY, Ye L. Reduction of Superoxide Radical Intermediate by Polydopamine for Efficient Hydrogen Peroxide Photosynthesis. Angew Chem Int Ed Engl 2024; 63:e202319216. [PMID: 38337143 DOI: 10.1002/anie.202319216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/26/2024] [Accepted: 02/09/2024] [Indexed: 02/12/2024]
Abstract
The synthesis of hydrogen peroxide through artificial photosynthesis is a green and promising technology with advantages in sustainability, economy and safety. However, superoxide radical (⋅O2 -), an important intermediate in photocatalytic oxygen reduction to H2O2 production, has strong oxidizing properties that potentially destabilize the catalyst. Therefore, avoiding the accumulation of ⋅O2 - for its rapid conversion to H2O2 is of paramount significance in improving catalyst stability and H2O2 yield. In this work, a strategy was developed to utilize protonated groups for the rapid depletion of converted ⋅O2 -, thereby the efficiency of photocatalytic synthesis of H2O2 from CN was successfully enhanced by 47-fold. The experimental findings demonstrated that polydopamine not only improved carrier separation efficiency, and more importantly, provided the adsorption reduction active site for ⋅O2 - for efficient H2O2 production. This work offers a versatile approach for synthesizing efficient and stable photocatalysts.
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Affiliation(s)
- Yihan Deng
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic, Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Wei Liu
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic, Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Run Xu
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic, Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Rong Gao
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic, Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Niu Huang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic, Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Yong Zheng
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic, Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
| | - Yingping Huang
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, 443002, Yichang, China
| | - Hao Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - Xin Ying Kong
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Liqun Ye
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic, Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002, Yichang, China
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, 443002, Yichang, China
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Li M, Yang Y, Zhu L, Wang G, Zeng Z, Xue L. Anti-fouling and highly permeable thin-film composite forward osmosis membranes based on the reactive polyvinylidene fluoride porous substrates. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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