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- Title
Dinuclear Metal Synergistic Catalysis Boosts Photochemical CO<sub>2</sub>‐to‐CO Conversion.
- Authors
Ouyang, Ting; Wang, Hong‐Juan; Huang, Hai‐Hua; Wang, Jia‐Wei; Guo, Song; Liu, Wen‐Ju; Zhong, Di‐Chang; Lu, Tong‐Bu
- Abstract
The solar‐driven CO2 reduction is a challenge in the field of "artificial photosynthesis", as most catalysts display low activity and selectivity for CO2 reduction in water‐containing reaction systems as a result of competitive proton reduction. Herein, we report a dinuclear heterometallic complex, [CoZn(OH)L1](ClO4)3 (CoZn), which shows extremely high photocatalytic activity and selectivity for CO2 reduction in water/acetonitrile solution. It achieves a selectivity of 98 % for CO2‐to‐CO conversion, with TON and TOF values of 65000 and 1.8 s−1, respectively, 4, 19, and 45‐fold higher than the values of corresponding dinuclear homometallic [CoCo(OH)L1](ClO4)3 (CoCo), [ZnZn(OH)L1](ClO4)3 (ZnZn), and mononuclear [CoL2(CH3CN)](ClO4)2 (Co), respectively, under the same conditions. The increased photocatalytic performance of CoZn is due to the enhanced dinuclear metal synergistic catalysis (DMSC) effect between ZnII and CoII, which dramatically lowers the activation barriers of both transition states of CO2 reduction.
- Subjects
CARBON dioxide; CHEMICAL reactions; PHOTOCATALYSIS; METAL catalysts; ACETONITRILE
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 50, p16718
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201811010