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Updated: Oct 16, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Amide-bridged conjugated organic polymers: efficient metal-free catalysts for visible-light-driven CO2 reduction with
Fan Wen1,2, Fengtao Zhang1,3, Zhen Wang1,3
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, CAS, Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences 100190 Beijing P. R. China liuzm@iccas.ac.cn.
Abstract:
The visible-light-driven photoreduction of CO2 to value-added chemicals over metal-free photocatalysts without sacrificial reagents is very interesting, but challenging. Herein, we present amide-bridged conjugated organic polymers (amide-COPs) prepared via self-condensation of amino nitriles in combination with hydrolysis, for the photoreduction of CO2 with H2O without any photosensitizers or sacrificial reagents under visible light irradiation. These catalysts can afford CO as the sole carbonaceous product without H2 generation. Especially, amide-DAMN derived from diaminomaleonitrile exhibited the highest activity for the photoreduction of CO2 to CO with a generation rate of 20.6 μmol g-1 h-1. Experiments and DFT calculations confirmed cyano/amide groups as active sites for CO2 reduction and second amine groups for H2O oxidation, and suggested that superior selectivity towards CO may be attributed to the adjacent redox sites. This work presents a new insight into designing photocatalysts for artificial photosynthesis.
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