Chemical Research in Chinese Universities ›› 2021, Vol. 37 ›› Issue (6): 1328-1333.doi: 10.1007/s40242-021-1344-7

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

FU Xinliang1, ZHU Aonan1, CHEN Xiaojie1, ZHANG Shifu2, WANG Mei2, YUAN Mingjian1   

  1. 1. Key Laboratory of Advanced Energy Materials Chemistry, Ministry of Education, Renewable Energy Conversion and Storage Center(RECAST), College of Chemistry, Nankai University, Tianjin 300071, P. R. China;
    2. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P. R. China
  • Received:2021-08-29 Revised:2021-09-30 Online:2021-11-23 Published:2021-11-23
  • Contact: WANG Mei, YUAN Mingjian E-mail:meiwang@ouc.edu.cn;yuanmj@nankai.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos.21771114, 91956130) and the Distinguished Young Scholars of Tianjin, China(No.19JCJQJC62000).

Abstract: Electrocatalysis has become an attractive strategy for the artificial reduction of CO2 to high-value chemicals. However, the design and development of highly selective and stable non-noble metal electrocatalysts that convert CO2 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(CO2RR). 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/cm2 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.

Key words: Graphdiyne(GDY), Carbon dioxide reduction reaction (CO2RR), CO, Electrocatalysis, Cu/Ni alloy nanoparticle