摘要
Electrocatalysis has become an attractive strategy for the artificial reduction of CO_(2) to high-value chemicals.However,the design and development of highly selective and stable non-noble metal electrocatalysts that convert CO_(2) to CO are still a challenge.As a new type of two-dimensional carbon material,graphdiyne(GDY),is rarely used to explore the application in carbon dioxide reduction reaction(CO_(2)RR).Therefore,we tried to use GDY as a substrate to stabilize the copper-nickel alloy nanoparticles(NPs)to synthesize Cu/Ni@GDY.Cu/Ni@GDY requires an overpotential(−0.61 V)to 10 mA/cm^(2) for the formation of CO,and it shows better activity than Au and Ag,achieving a higher Faraday efficiency of about 95.2%and high stability of about 26 h at an overpotential(−0.70 V).The electronic interaction between GDY substrate and Cu/Ni alloy NPs and the large specific surface area of GDY is responsible for the high performance.
基金
This work was supported by the National Natural Science Foundation of China(Nos.21771114,91956130)
the Distinguished Young Scholars of Tianjin,China(No.19JCJQJC62000).