Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction

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	Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction
其他题名	Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction
	Deogratias Ntirikwendera 1; Ji Muwei 1; Zhang Yong 1; Liu Jiajia 1; Zhang Jiatao 2; Zhu Hesun 1
	2015
发表期刊	NANO RESEARCH
ISSN	1998-0124
卷号	8 期号:1 页码:271-280
摘要	Reducing Pt loading, while improving electrocatalytic activity and the stability of Pt-based nanostructured materials, is currently a key challenge in green energy technology. Herein, we report the controllable synthesis of tri-metallic (Au@Ag@Pt) and bimetallic (Ag@Pt) particles consisting of a controllable thin Pt shell, via interface-mediated galvanic displacement. Through oil-ethanol-H2O interface mediation, the controllable "out to in" displacement of Ag atoms to Pt enables the formation of a thin Pt shell on monodisperse sub-ten-nanometer Au@Ag and Ag nanocrystals. The synthesized nanoparticles with a thin Pt shell exhibited potential catalytic activity towards the oxygen reduction reaction (ORR) due to the high exposure of Pt atoms.
其他摘要	Reducing Pt loading, while improving electrocatalytic activity and the stability of Pt-based nanostructured materials, is currently a key challenge in green energy technology. Herein, we report the controllable synthesis of tri-metallic (Au@Ag@Pt) and bimetallic (Ag@Pt) particles consisting of a controllable thin Pt shell, via interface-mediated galvanic displacement. Through oil-ethanol-H_2O interface mediation, the controllable “out to in” displacement of Ag atoms to Pt enables the formation of a thin Pt shell on monodisperse sub-ten-nanometer Au@Ag and Ag nanocrystals. The synthesized nanoparticles with a thin Pt shell exhibited potential catalytic activity towards the oxygen reduction reaction (ORR) due to the high exposure of Pt atoms.
关键词	GALVANIC REPLACEMENT ELECTROCATALYTIC ACTIVITY PLATINUM NANOPARTICLES SILVER NANOPARTICLES ALLOY NANOPARTICLES PT NANOPARTICLES FUEL-CELLS HOLLOW AG NANOSTRUCTURES core@shell metal nanocomposites Pt shell sub-ten-nanometer oxygen reduction
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation] ; [Research Fund for the Doctoral Program of Higher Education of China] ; [Beijing Excellent Talent Training Project] ; [Program for New Century Excellent Talents in University]
CSCD记录号	CSCD:5454007
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/153307
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Beijing Institute Technol, Dept Mat Phys & Chem, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Deogratias Ntirikwendera,Ji Muwei,Zhang Yong,et al. Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction[J]. NANO RESEARCH,2015,8(1):271-280.
APA	Deogratias Ntirikwendera,Ji Muwei,Zhang Yong,Liu Jiajia,Zhang Jiatao,&Zhu Hesun.(2015).Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction.NANO RESEARCH,8(1),271-280.
MLA	Deogratias Ntirikwendera,et al."Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction".NANO RESEARCH 8.1(2015):271-280.