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DOI	10.1016/j.scib.2020.01.015
	Importance of Au nanostructures in CO2 electrochemical reduction reaction
	Yang D.-R.; Liu L.; Zhang Q.; Shi Y.; Zhou Y.; Liu C.; Wang F.-B.; Xia X.-H.
发表日期	2020
ISSN	20959273
起始页码	796
结束页码	802
卷号	65 期号:10
英文摘要	Electrochemical conversion of CO2 into fuels is a promising means to solve greenhouse effect and recycle chemical energy. However, the CO2 reduction reaction (CO2RR) is limited by the high overpotential, slow kinetics and the accompanied side reaction of hydrogen evolution reaction. Au nanocatalysts exhibit high activity and selectivity toward the reduction of CO2 into CO. Here, we explore the Faradaic efficiency (FE) of CO2RR catalyzed by 50 nm gold colloid and trisoctahedron. It is found that the maximum FE for CO formation on Au trisoctahedron reaches 88.80% at −0.6 V, which is 1.5 times as high as that on Au colloids (59.04% at −0.7 V). The particle-size effect of Au trisoctahedron has also been investigated, showing that the FE for CO decreases almost linearly to 62.13% when the particle diameter increases to 100 nm. The X-ray diffraction characterizations together with the computational hydrogen electrode (CHE) analyses reveal that the (2 2 1) facets on Au trisoctahedron are more feasible than the (1 1 1) facets on Au colloids in stabilizing the critical intermediate COOH*, which are responsible for the higher FE and lower overpotential observed on Au trisoctahedron. © 2020 Science China Press
关键词	CO2 reduction reaction (CO2RR)Electrocatalysis Gold nanostructures Morphological effect Size effect
英文关键词	Carbon dioxide; Electrocatalysis; Electrolytic reduction; Greenhouse effect; Hydrogen; Hydrogen evolution reaction; Nanocatalysts; Nanostructures; Particle size; Particle size analysis; Reaction kinetics; Sols; CO2 reduction; Electrochemical conversion; Electrochemical reductions; Faradaic efficiencies; Gold nanostructures; Morphological effects; Particle size effect; Size effects; Gold
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207255
作者单位	State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China; Key Laboratory of Mesoscopic Chemistry of MOE, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
推荐引用方式 GB/T 7714	Yang D.-R.,Liu L.,Zhang Q.,et al. Importance of Au nanostructures in CO2 electrochemical reduction reaction[J],2020,65(10).
APA	Yang D.-R..,Liu L..,Zhang Q..,Shi Y..,Zhou Y..,...&Xia X.-H..(2020).Importance of Au nanostructures in CO2 electrochemical reduction reaction.Science Bulletin,65(10).
MLA	Yang D.-R.,et al."Importance of Au nanostructures in CO2 electrochemical reduction reaction".Science Bulletin 65.10(2020).