Highly Efficient Photocatalytic Reduction of CO2 to CO by In Situ Formation of a Hybrid Catalytic System Based on Molecular Iron Quaterpyridine Covalently Linked to Carbon Nitride

作者：Wei, Yue; Chen, Lingjing; Chen, Huan; Cai, Lirong; Tan, Guiping; Qiu, Yongfu; Xiang, Quanjun; Chen, Gui^*; Lau, Tai-Chu^*; Robert, Marc^*

来源：Angewandte Chemie - International Edition, 2022, 61(11): e202116832.

DOI：10.1002/anie.202116832

• Carbon Nitride
• CO2 Reduction
• Fe Quaterpyridine
• Photocatalysis
• Schiff Base Reaction

Efficient and selective photocatalytic CO2 reduction was obtained within a hybrid system that is formed in situ via a Schiff base condensation between a molecular iron quaterpyridine complex bearing an aldehyde function and carbon nitride. Irradiation (blue LED) of an CH3CN solution containing 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole (BIH), triethylamine (TEA), Feqpy-BA (qpy-BA=4-([2,2 ':6 ',2 '':6 '',2 '''-quaterpyridin]-4-yl)benzaldehyde) and C3N4 resulted in CO evolution with a turnover number of 2554 and 95 % selectivity. This hybrid catalytic system unlocks covalent linkage of molecular catalysts with semiconductor photosensitizers via Schiff base reaction for high-efficiency photocatalytic reduction of CO2, opening a pathway for diverse photocatalysis.

• 单位
  东莞理工学院; 电子科技大学