Visible-Light-Driven CO2 Reduction with Carbon Nitride: Enhancing the Activity of Ruthenium Catalysts
Visible-Light-Driven CO2 Reduction with Carbon Nitride: Enhancing the Activity of Ruthenium Catalysts
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DOI：
10.1002/anie.201411170
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发表时间：
2015-02-16
影响因子：
16.6
通讯作者：
Maeda, Kazuhiko
中科院分区：
文献类型：
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作者：
Kuriki, Ryo;Sekizawa, Keita;Maeda, Kazuhiko
一种多相光催化剂系统，由钌络合物和氮化碳（C3N4），这分别作为催化和捕光单元，被开发用于将CO2还原成甲酸。促进电子从C3N4注入钌单元以及加强两个单元之间的电子相互作用增强其活性。使用合适的溶剂进一步改善了性能，导致在400 nm处的大于1000的转换数和5.7%的表观量子产率。这些是迄今为止在可见光照射下用于CO2还原的非均相光催化剂的最佳值。
A heterogeneous photocatalyst system that consists of a ruthenium complex and carbon nitride (C3N4), which act as the catalytic and light-harvesting units, respectively, was developed for the reduction of CO2 into formic acid. Promoting the injection of electrons from C3N4 into the ruthenium unit as well as strengthening the electronic interactions between the two units enhanced its activity. The use of a suitable solvent further improved the performance, resulting in a turnover number of greater than 1000 and an apparent quantum yield of 5.7% at 400nm. These are the best values that have been reported for heterogeneous photocatalysts for CO2 reduction under visible-light irradiation to date.