气候变化领域集成服务门户(CCPortal): Coupling effects of Zn single atom and high curvature supports for improved performance of CO2 reduction

CCPortal

DOI	10.1016/j.scib.2021.04.020
	Coupling effects of Zn single atom and high curvature supports for improved performance of CO2 reduction
	Hao Z.; Chen J.; Zhang D.; Zheng L.; Li Y.; Yin Z.; He G.; Jiao L.; Wen Z.; Lv X.-J.
发表日期	2021
ISSN	20959273
起始页码	1649
结束页码	1658
卷号	66 期号:16
英文摘要	Single-atom catalysts (SACs) have emerged as one of the most competitive catalysts toward a variety of important electrochemical reactions, thanks to their maximum atom economy, unique electronic and geometric structures. However, the role of SACs supports on the catalytic performance does not receive enough research attentions. Here, we report an efficient route for synthesis of single atom Zn loading on the N-doped carbon nano-onions (ZnN/CNO). ZnN/CNO catalysts show an excellent high selectivity for CO2 electro-reduction to CO with a Faradaic efficiency of CO (FECO) up to 97% at −0.47 V (vs. reversible hydrogen electrode, RHE) and remarkable durability without activity decay. To our knowledge, ZnN/CNO is the best activity for the Zn based catalysts up to now, and superior to single atom Zn loading on the two-dimensional planar and porous structure of graphene substrate, although the graphene with larger surface area. The exact role of such carbon nano-onions (CNO) support is studied systematically by coupling characterizations and electrochemistry with density functional theory (DFT) calculations, which have attributed such good performance to the increased curvature. Such increased curvature modifies the surface charge, which then changes the adsorption energies of key intermediates, and improves the selectivity for CO generation accordingly. © 2021 Science China Press
关键词	Coupling effect Electrocatalytic CO2 reductions High activity and selectivity Highly curved substrate Single-atom catalysts
英文关键词	Carbon dioxide; Catalyst selectivity; Density functional theory; Doping (additives); Electrochemistry; Graphene; Reduction; Substrates; Zinc; Carbon nano-onions; Coupling effect; Electrocatalytic CO2 reduction; High activity; High selectivity; Highly curved substrate; N-doped; Single-atom catalyst; Single-atoms; ]+ catalyst; Atoms
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/207419
作者单位	State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of New Energy, North China Electric Power University, Beijing, 102206, China; State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, China; CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Province Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China; Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; Department of Energy and Chemical Engineering, College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Pol...
推荐引用方式 GB/T 7714	Hao Z.,Chen J.,Zhang D.,et al. Coupling effects of Zn single atom and high curvature supports for improved performance of CO2 reduction[J],2021,66(16).
APA	Hao Z..,Chen J..,Zhang D..,Zheng L..,Li Y..,...&Lv X.-J..(2021).Coupling effects of Zn single atom and high curvature supports for improved performance of CO2 reduction.Science Bulletin,66(16).
MLA	Hao Z.,et al."Coupling effects of Zn single atom and high curvature supports for improved performance of CO2 reduction".Science Bulletin 66.16(2021).