Stabilization of Cu/Ni Alloy Nanoparticles with Graphdiyne Enabling Efficient CO2 Reduction |
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Authors: | FU Xinliang ZHU Aonan CHEN Xiaojie ZHANG Shifu WANG Mei YUAN Mingjian |
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Affiliation: | 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 |
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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. |
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Keywords: | Graphdiyne(GDY) Carbon dioxide reduction reaction(CO2RR) CO Electrocatalysis Cu/Ni alloy nanoparticle |
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