| Artificial Photosynthesis of H2O2 through Reversible Photoredox Transformation between Catechol and o-Benzoquinone on Polydopamine-Coated CdS | |
| Wei, Zhen; Zhao, Shen; Li, Wenlu; Zhao, Xu; Chen, Chuncheng; Phillips, David Lee; Zhu, Yongfa; Choi, Wonyong | |
| 2022-09-10 | |
| Source Publication | ACS CATALYSIS
 |
| ISSN | 2155-5435 |
| Issue | 0Pages:11436-11443 |
| Abstract | Artificial photosynthesis of H2O2 from water and O-2 only is a prospective alternative to the industrial anthraquinone process, which requires the development of cheap, efficient, and stable photocatalysts working without sacrificial reagents. Inspired by the industrial strategy, polydopamine (PDA)-coated CdS was designed for the photosynthesis of H2O2 and achieved a yield of 3.84 mM in 24 h under visible light from water and dioxygen, which is 13.7 times higher than that of CdS. The dehydrogenation of catechol to o-benzoquinone in PDA is coupled with two-electron O-2 reduction to produce H2O2, while the photoreductive hydrogenation of o- benzoquinone regenerates catechol in PDA concurrently. The reversible redox transformation between catechol and the o-benzoquinone moiety in PDA under visible light markedly increases both the production yield and the selectivity of H2O2 (from 30% on CdS to 82% on CdS-PDA). In addition, PDA coating increases the O-2 adsorption capacity, inhibits H2O2 decomposition, and enhances the stability of CdS against photocorrosion. This structural design enables artificial photosynthesis of H2O2 without sacrificial reagents. |
| Department | 环境水质学国家重点实验室 ; 环境水质学国家重点实验室 |
| Keyword | GRAPHITIC CARBON NITRIDE HYDROGEN-PEROXIDE PRODUCTION OXYGEN-REDUCTION O-2 |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47675 |
| Collection | 环境水质学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Univ Hong Kong, Dept Chem, Hong Kong 999077, Peoples R China 3.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China 4.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, Key Lab Photochem, Beijing 100190, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Wei, Zhen,Zhao, Shen,Li, Wenlu,et al. Artificial Photosynthesis of H2O2 through Reversible Photoredox Transformation between Catechol and o-Benzoquinone on Polydopamine-Coated CdS[J]. ACS CATALYSIS,2022(0):11436-11443. |
| APA | Wei, Zhen.,Zhao, Shen.,Li, Wenlu.,Zhao, Xu.,Chen, Chuncheng.,...&Choi, Wonyong.(2022).Artificial Photosynthesis of H2O2 through Reversible Photoredox Transformation between Catechol and o-Benzoquinone on Polydopamine-Coated CdS.ACS CATALYSIS(0),11436-11443. |
| MLA | Wei, Zhen,et al."Artificial Photosynthesis of H2O2 through Reversible Photoredox Transformation between Catechol and o-Benzoquinone on Polydopamine-Coated CdS".ACS CATALYSIS .0(2022):11436-11443. |
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| Artificial Photosynt（5633KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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