QQ客服 官方微博 反馈留言

	Stellated Ag-Pt bimetallic nanoparticles: An effective platform for catalytic activity tuning
	Liu, Hui1,2; Ye, Feng1; Yao, Qiaofeng3; Cao, Hongbin1; Xie, Jianping3; Lee, Jim Yang3; Yang, Jun1
刊名	SCIENTIFIC REPORTS
	2014-02-05
卷号	4期号:1
关键词	superior electrocatalytic activity shape-controlled synthesis oxygen-reduction single-crystal noble-metals nanocrystals nanodendrites oxidation heteronanostructures enhancement
ISSN号	2045-2322
其他题名	Sci Rep
中文摘要	The usefulness of Pt-based nanomaterials for catalysis can be greatly enhanced by coupling morphology engineering to the strategic presence of a second or even third metal. Here we demonstrate the design and preparation of stellated Ag-Pt bimetallic nanoparticles where significant activity difference between the methanol oxidation reaction (MOR) and the oxygen reduction reaction (ORR) may be realized by relegating Ag to the core or by hollowing out the core. In particular the stellated Pt surface, with an abundance of steps, edges, corner atoms, and {111} facets, is highly effective for the ORR but is ineffective for MOR. MOR activity is only observed in the presence of a Ag core through electronic coupling to the stellated Pt shell. The bimetallic Ag-Pt stellates therefore demonstrate the feasibility of tuning a Pt surface for two very different structure sensitive catalytic reactions. Stellated bimetallics may therefore be an effective platform for highly tunable catalyst designs.
英文摘要	The usefulness of Pt-based nanomaterials for catalysis can be greatly enhanced by coupling morphology engineering to the strategic presence of a second or even third metal. Here we demonstrate the design and preparation of stellated Ag-Pt bimetallic nanoparticles where significant activity difference between the methanol oxidation reaction (MOR) and the oxygen reduction reaction (ORR) may be realized by relegating Ag to the core or by hollowing out the core. In particular the stellated Pt surface, with an abundance of steps, edges, corner atoms, and {111} facets, is highly effective for the ORR but is ineffective for MOR. MOR activity is only observed in the presence of a Ag core through electronic coupling to the stellated Pt shell. The bimetallic Ag-Pt stellates therefore demonstrate the feasibility of tuning a Pt surface for two very different structure sensitive catalytic reactions. Stellated bimetallics may therefore be an effective platform for highly tunable catalyst designs.
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	SUPERIOR ELECTROCATALYTIC ACTIVITY ; SHAPE-CONTROLLED SYNTHESIS ; OXYGEN-REDUCTION ; SINGLE-CRYSTAL ; NOBLE-METALS ; NANOCRYSTALS ; NANODENDRITES ; OXIDATION ; HETERONANOSTRUCTURES ; ENHANCEMENT
收录类别	SCI
原文出处	://WOS:000331220900003
语种	英语
WOS记录号	WOS:000331220900003
公开日期	2014-05-06
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/8212]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 119260, Singapore
推荐引用方式 GB/T 7714	Liu, Hui,Ye, Feng,Yao, Qiaofeng,et al. Stellated Ag-Pt bimetallic nanoparticles: An effective platform for catalytic activity tuning[J]. SCIENTIFIC REPORTS,2014,4(1).
APA	Liu, Hui.,Ye, Feng.,Yao, Qiaofeng.,Cao, Hongbin.,Xie, Jianping.,...&Yang, Jun.(2014).Stellated Ag-Pt bimetallic nanoparticles: An effective platform for catalytic activity tuning.SCIENTIFIC REPORTS,4(1).
MLA	Liu, Hui,et al."Stellated Ag-Pt bimetallic nanoparticles: An effective platform for catalytic activity tuning".SCIENTIFIC REPORTS 4.1(2014).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。