Preparation method and application of high-dislocation copper catalyst

Abstract

The application belongs to the technical field of catalyst preparation, and discloses a preparation method of high-dislocation copper catalyst and application thereof. The method comprises the following steps: S1, providing a free radical environment; S2, injecting a copper source solution in the free radical environment, and then obtaining a high-dislocation copper material through electrodeposition. The application constructs a chemical microenvironment rich in methyl free radicals (·CH3) near the electrode surface through the co-electrolysis of persulfate and dimethyl sulfoxide (DMSO), so as to effectively regulate the growth behavior of copper crystals in the subsequent electrodeposition process, and finally obtain a copper catalyst with high dislocation density; the high-dislocation copper catalyst exhibits excellent C-C coupling ability in the CO2 electro-reduction reaction, and the faradic efficiency of ethanol can reach nearly 60%, which shows extremely high electrocatalytic selectivity and industrial application potential, and provides a new technical path for the resource utilization of CO2.

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