Preparation of carbon-supported bimetallic Cu-Bi@C catalyst for electrocatalytic reduction of CO2 to ethanol

Abstract

The application discloses a kind of carbon-supported bimetallic Cu-Bi@C preparation for electrocatalytic synthesis of ethanol. Including the following steps: using one-pot method to synthesize PVP@Cu-BTC, then using impregnation method to make bismuth ion adsorbed in the gap of MOF channel, finally using tube furnace pyrolysis to form Cu-Bi@C catalyst. The influence of different precursor concentration of bismuth ion on the electrocatalytic synthesis of ethanol performance of carbonization product is discussed. The application has the advantages that the prepared Cu-Bi@C has more stability compared with pure copper-based catalyst, and the carbon-loaded metal has catalytic activity and high current density. With the help of MOF material flexible adjustable structure, high specific surface area Bi ion loading, finally tube furnace pyrolysis carbonization, Cu, Bi double site synergistic effect significantly enhances the adsorption of CO2, improves specific surface area and electrochemical activity, and promotes C-C coupling, so as to improve the yield and selectivity of ethanol.

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