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- Title
A Dinuclear Cobalt Cryptate as a Homogeneous Photocatalyst for Highly Selective and Efficient Visible-Light Driven CO<sub>2</sub> Reduction to CO in CH<sub>3</sub>CN/H<sub>2</sub>O Solution.
- Authors
Ouyang, Ting; Huang, Hai ‐ Hua; Wang, Jia ‐ Wei; Zhong, Di ‐ Chang; Lu, Tong ‐ Bu
- Abstract
A dinuclear cobalt complex [Co2(OH)L1](ClO4)3 ( 1, L1=N[(CH2)2NHCH2( m-C6H4)CH2NH(CH2)2]3N) displays high selectivity and efficiency for the photocatalytic reduction of CO2 to CO in CH3CN/H2O (v/v=4:1) under a 450 nm LED light irradiation, with a light intensity of 100 mW cm−2. The selectivity reaches as high as 98 %, and the turnover numbers (TON) and turnover frequencies (TOF) reach as high as 16896 and 0.47 s−1, respectively, with the calculated quantum yield of 0.04 %. Such high activity can be attributed to the synergistic catalysis effect between two CoII ions within 1, which is strongly supported by the results of control experiments and DFT calculations.
- Subjects
CARBON dioxide; PHOTOCATALYSTS; VISIBLE spectra; DENSITY functional theory; TURNOVER frequency (Catalysis); CARBON offsetting
- Publication
Angewandte Chemie, 2017, Vol 129, Issue 3, p756
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201610607