Boron-modified CuO As Catalyst for Electroreduction of CO2 Towards C2+ Products

Boron-doped CuO nanosheets were obtained through one-step hydrothermal method and were investigated as catalyst for electroreduction of CO2. The optimized B1-CuO NS-2 demonstrates the highest FEEthylene of 38.56%, jEthylene of 11.78 mA cm−2 and FEC2+ of 54.78% at −1.2 V vs. RHE. The DFT calculation demonstrates that the incorporation of boron can increase the charge density and decrease the adsorption energy of CO, which facilitated electron transport and enhanced the selectivity of the catalyst towards the production of C2+ products.