Stabilization of Cu/Ni Alloy Nanoparticles with Graphdiyne Enabling Efficient CO2 Reduction

• Published in: Chemical research in Chinese universities 2021-12, Vol.37 (6), p.1328-1333
• Main Authors: Fu, Xinliang, Zhu, Aonan, Chen, Xiaojie, Zhang, Shifu, Wang, Mei, Yuan, Mingjian
• Format: Article
• Language: English
• Subjects: Analytical Chemistry; Carbon dioxide; Chemical reduction; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Copper; Copper base alloys; Electrocatalysts; Gold; Inorganic Chemistry; Nanoalloys; Nanoparticles; Nickel; Noble metals; Organic Chemistry; Physical Chemistry; Silver; Substrates
• ISSN: 1005-9040; 2210-3171
• DOI: 10.1007/s40242-021-1344-7

E lectrocatalysis 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.