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Updated: Jul 26, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Covalent Organic Frameworks Boost the Silver-Electrocatalyzed Reduction of CO2: The Electronic and Confinement Effect
Xian-Xia Yang1, Yi-Ran Du2, Xiao-Qiang Li2
1College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.
Abstract:
The electrocatalytic reduction of CO2 to CO with high efficiency is one of the most promising approaches for CO2 conversion due to its considerable economic feasibility and broad application prospects. In this study, three Ag@COF-R (R = -H, -OCH3, -OH) hybrids were facilely fabricated by impregnating silver acetate (AgOAc) into respective covalent organic frameworks (COFs) prepared in advance. They differ significantly in the crystallinity, porosity, distribution, size, and electronic configuration of AgOAc species, which thereby influences both the activity and the selectivity of electrolytic CO2-to-CO transformation. Impressively, Ag@COF-OCH3 provided a high FECO of 93.0% with a high jCO of 213.9 mA cm-2 at -0.87 V (vs reversible hydrogen electrode, RHE) in 1 M KOH using a flow cell. In addition, it exhibited long-term durability at 100 mA cm-2 for 30 h.
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