Tris(2‐benzimidazolylmethyl)amine‐Directed Synthesis of Single‐Atom Nickel Catalysts for Electrochemical CO Production from CO2

Abstract The electrochemical reduction of carbon dioxide (CO2) to value‐added products is a promising approach to reducing excess CO2 in the atmosphere. However, the development of electrocatalysts for highly selective and efficient electrochemical CO2 reduction has been challenging because protons are usually easier to reduce than CO2 in an aqueous electrolyte. Recently, single‐atom catalysts (SACs) have been suggested as candidate CO2 reduction catalysts due to their unique catalytic properties. To prepare single‐atom metal active sites, the stabilization of metal atoms over conductive supports such as graphene sheets to prevent metal aggregation is crucial. To address this issue, a facile method was developed to prepare single‐atom nickel active sites on reduced graphene oxide (RGO) sheets for the selective production of carbon monoxide (CO) from CO2. The tris(2‐benzimidazolylmethyl)a…