钴
光催化
金属
电子转移
平面的
催化效率
营业额
化学
离子
光化学
催化作用
无机化学
有机化学
计算机科学
计算机图形学(图像)
作者
Yun‐Nan Gong,Siqi Zhao,Hongjuan Wang,Zhao-Ming Ge,Chen Liao,Ke‐Ying Tao,Di‐Chang Zhong,Ken Sakai,Xingqiang Lü
标识
DOI:10.1002/anie.202411639
摘要
Abstract Dinuclear metal synergistic catalysis (DMSC) has been proved an effective approach to enhance catalytic efficiency in photocatalytic CO 2 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 CO 2 ‐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 (CO 2 2− ) intermediate and fast mass transfer closely related with the planar structure.
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