Method for regulating and controlling selectivity of electrocatalytic CO2 on C (sp3)-H bond carboxylation through Cu-S bond crystal engineering

Abstract

The invention discloses an application of regulating and controlling the selectivity of electrocatalytic CO2 on C (sp3)-H bond carboxylation through Cu-S bond crystal engineering. Researches find that C (sp3)-H activation and CO2 carboxylation activity in electrocatalysis can be enhanced by Cu-S bond crystal engineering, and chemical selectivity regulation and control are realized. Wherein CuS (001) can realize C (sp3)-H activation and CO2 carboxylation to realize high-selectivity synthesis of monocarboxylic acid; the Cu2S (110) prepared by phase change of the CuS (001) can realize activation of alkane and aromatic hydrocarbon C (sp3)-H and high-selectivity binary carboxylation of CO2 to generate dicarboxylic acid. For example, 2-methyl furan is efficiently converted into furan-2-acetic acid under the catalysis of CuS (001), and 2, 5-dimethyl furan is quantitatively converted into furan-2, 5-dicarboxylic acid under the catalysis of Cu2S (110). The research provides a novel electro-catalysis strategy based on crystal engineering, carbon dioxide is taken as a carbon source, high-chemical-selectivity carboxylation of C (sp3)-H bonds in alkane and aromatic hydrocarbon is realized, carbon neutralization is realized, and value-added carboxylic acid is prepared under mild conditions.