期刊
ACS CATALYSIS
卷 11, 期 19, 页码 11973-11984出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.1c03336
关键词
photocatalysis; CO2 reduction; copper complex; photosensitizer
资金
- JST CREST [JPMJCR13L1]
- JSPS KAKENHI [JP20H00396, JP17H06440, JP16K17876, JP21K05082]
Two dinuclear Cu(I) complexes were synthesized, with one showing outstanding redox photosensitizing properties for photocatalytic CO2 reduction. A Fe(II) complex was used as the catalyst, resulting in a 14.1% quantum yield of CO production. The Cu dimer displayed significant durability and a high turnover number in the reaction.
Two dinuclear Cu-I complexes with two tetradentate ligands consisting of a diimine unit and two diphenylphosphine units connected with -C4H8- chains were synthesized. The Cu-I dimer with p-CF3 substituents worked as an outstanding redox photosensitizer for photocatalytic CO2 reduction; Fe-II(dmp)(2)(NCS)(2) (dmp = 2,9-dimethyl-1,10-phenanthroline) was used as a catalyst, and CO was produced with a quantum yield of 14.1%. This is one of the most efficient photocatalytic systems using only abundant elements. This Cu dimer was significantly durable: approximately 80% remained in the reaction solution after irradiation for 48 h, while the turnover number was TONCO = 778 based on the dinuclear CuI complex used.
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