气候变化领域集成服务门户(CCPortal): Core@shell structured Au@SnO2 nanoparticles with improved N2 adsorption/activation and electrical conductivity for efficient N2 fixation

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DOI	10.1016/j.scib.2019.12.019
	Core@shell structured Au@SnO2 nanoparticles with improved N2 adsorption/activation and electrical conductivity for efficient N2 fixation
	Wang P.; Ji Y.; Shao Q.; Li Y.; Huang X.
发表日期	2020
ISSN	20959273
起始页码	350
结束页码	358
卷号	65 期号:5
英文摘要	The design of electrocatalysts with enhanced adsorption and activation of nitrogen (N2) is critical for boosting the electrochemical N2 reduction (ENR). Herein, we developed an efficient strategy to facilitate N2 adsorption and activation for N2 electroreduction into ammonia (NH3) by vacancy engineering of core@shell structured Au@SnO2 nanoparticles (NPs). We found that the ultrathin amorphous SnO2 shell with enriched oxygen vacancies was conducive to adsorb N2 as well as promoted the N2 activation, meanwhile the metallic Au core ensured the good electrical conductivity for accelerating electrons transport during the electrochemical N2 reduction reaction, synergistically boosting the N2 electroreduction catalysis. As confirmed by the 15N-labeling and controlled experiments, the core@shell Au@amorphous SnO2 NPs with abundant oxygen vacancies show the best performance for N2 electroreduction with the NH3 yield rate of 21.9 μg h−1 mg−1 cat and faradaic efficiency of 15.2% at −0.2 VRHE, which surpass the Au@crystalline SnO2 NPs, individual Au NPs and all reported Au-based catalysts for ENR. © 2019 Science China Press
关键词	Amorphous Core@shell Electroreduction Nitrogen fixation Vacancy engineering
英文关键词	Adsorption; Ammonia; Amorphous materials; Chemical activation; Electric conductivity; Electrocatalysts; Electrolytic reduction; Gold; Nanoparticles; Nitrogen fixation; Oxygen vacancies; Controlled experiment; Core shell; Efficient strategy; Electrical conductivity; Electro reduction; Enhanced adsorptions; Faradaic efficiencies; Vacancy engineering; Shells (structures)
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/207210
作者单位	College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China; Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China
推荐引用方式 GB/T 7714	Wang P.,Ji Y.,Shao Q.,et al. Core@shell structured Au@SnO2 nanoparticles with improved N2 adsorption/activation and electrical conductivity for efficient N2 fixation[J],2020,65(5).
APA	Wang P.,Ji Y.,Shao Q.,Li Y.,&Huang X..(2020).Core@shell structured Au@SnO2 nanoparticles with improved N2 adsorption/activation and electrical conductivity for efficient N2 fixation.Science Bulletin,65(5).
MLA	Wang P.,et al."Core@shell structured Au@SnO2 nanoparticles with improved N2 adsorption/activation and electrical conductivity for efficient N2 fixation".Science Bulletin 65.5(2020).