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Cu电极较之玻碳(GC)电极,更有利于CO2的电还原反应,而电沉积制备的纳米Cu电极可以进一步提高其电催化还原性能。本文考察了电沉积条件,包括沉积时间、H2SO4浓度、沉积电位、Cu2+浓度等对所制备的纳米Cu电极对CO2电还原反应催化性能的影响。针对该反应优化了纳米Cu电极的制备条件,并用SEM表征了其微观形貌。最后还将制备的纳米Cu电极运用于CO2与环氧丙烷的电合成反应,提高了碳酸丙烯酯的反应产率。
Compared with glassy carbon (GC) electrode, Cu electrode is more conducive to the electro-reduction reaction of CO2, while nano-Cu electrode prepared by electrodeposition can further improve its electrocatalytic reduction performance. The effects of deposition time, H2SO4 concentration, deposition potential and Cu2 + concentration on the catalytic performance of the prepared nano-Cu electrode for CO2 reduction were investigated in this paper. The preparation conditions of nanocrystalline Cu electrode were optimized for the reaction. The microstructure of nanocrystalline Cu electrode was characterized by SEM. Finally, the prepared nano-Cu electrode is applied to the electro-synthesis reaction of CO2 and propylene oxide to improve the reaction yield of propylene carbonate.