A Planar-Structured Dinuclear Cobalt(II) Complex with Indirect Synergy for Photocatalytic CO2-to-CO Conversion

被引：8

作者：

Gong, Yun-Nan ^{[1
]}

Zhao, Si-Qi ^{[1
]}

Wang, Hong-Juan ^{[1
]}

Ge, Zhao-Ming ^{[1
]}

Liao, Chen ^{[2
]}

Tao, Ke-Ying ^{[1
]}

Zhong, Di-Chang ^{[1
]}

Sakai, Ken ^{[2
]}

Lu, Tong-Bu ^{[1
]}

机构：

[1] Tianjin Univ Technol, MOE Int Joint Lab Mat Microstruct, Sch Mat Sci & Engn, Sch Chem & Chem Engn,Inst New Energy Mat & Low Car, Tianjin 300384, Peoples R China

[2] Kyushu Univ, Fac Sci, Dept Chem, Motooka 744,Nishi Ku, Fukuoka 8190395, Japan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2024年 / 63卷 / 45期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

dinuclear metal complex; planar structure; CO2; reduction; dinuclear metal synergistic catalysis (DMSC); molecular photocatalysis; CO2; REDUCTION; HIGHLY EFFICIENT; METAL-COMPLEXES; DRIVEN; WATER; CATALYSTS; ACTIVATION; BIPYRIDYL; DIOXIDE; LAYERS;

D O I：

10.1002/anie.202411639

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Dinuclear metal synergistic catalysis (DMSC) has been proved an effective approach to enhance catalytic efficiency in photocatalytic CO2 reduction reaction, while it remains challenge to design dinuclear metal complexes that can show DMSC effect. The main reason is that the influence of the microenvironment around dinuclear metal centres on catalytic activity has not been well recognized and revealed. Herein, we report a dinuclear cobalt complex featuring a planar structure, which displays outstanding catalytic efficiency for photochemical CO2-to-CO conversion. The turnover number (TON) and turnover frequency (TOF) values reach as high as 14457 and 0.40 s(-1) respectively, 8.6 times higher than those of the corresponding mononuclear cobalt complex. Control experiments and theoretical calculations revealed that the enhanced catalytic efficiency of the dinuclear cobalt complex is due to the indirect DMSC effect between two Co-II ions, energetically feasible one step two-electron transfer process by Co-2(I,I) intermediate to afford Co-2(II,II)(CO22-) intermediate and fast mass transfer closely related with the planar structure.

引用

页数：9

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