Metal/Oxide Interface Nanostructures Generated by Surface Segregation for Electrocatalysis

IMR OpenIR

	Metal/Oxide Interface Nanostructures Generated by Surface Segregation for Electrocatalysis
	Weng, Zhe; Liu, Wen; Yin, Li-Chang; Fang, Ruopian; Lo, Min; Altman, Eric I.; Fan, Qi; Li, Feng; Cheng, Hui-Ming; Wang, Hailiang; hailiang.wang@yale.edu
	2015
发表期刊	NANO LETTERS
ISSN	1530-6984
卷号	15 期号:11 页码:7704-7710
摘要	Strong metal/oxide interactions have been acknowledged to play prominent roles in chemical catalysis in the gas phase, but remain as an unexplored area in electrocatalysis in the liquid phase. Utilization of metal/oxide interface structures could generate high performance electrocatalysts for clean energy storage and conversion. However, building highly dispersed nanoscale metal/oxide interfaces on conductive scaffolds remains a significant challenge. Here, we report a novel strategy to create metal/oxide interface nanostructures by growing mixed metal oxide nanoparticles on carbon nanotubes (CNTs) and then selectively promoting migration of one of the metal ions to the surface of the oxide nanoparticles and simultaneous reduction to metal. Employing this strategy, we have synthesized Ni/CeO2 nanointerfaces coupled with CNTs. The Ni/CeO2 interface promotes hydrogen evolution catalysis by facilitating water dissociation and modifying the hydrogen binding energy. The Ni/CeO2-CNT hybrid material exhibits superior activity for hydrogen evolution as a result of synergistic effects including strong metal/oxide interactions, inorganic/carbon coupling, and particle size control.
部门归属	[weng, zhe ; liu, wen ; fan, qi ; wang, hailiang] yale univ, energy sci inst, new haven, ct 06520 usa ; [weng, zhe ; liu, wen ; fan, qi ; wang, hailiang] yale univ, dept chem, new haven, ct 06520 usa ; [lo, min ; altman, eric i.] yale univ, dept chem & environm engn, new haven, ct 06520 usa ; [yin, li-chang ; fang, ruopian ; li, feng ; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词	Metal/oxide Interface Electrocatalysis Surface Segregation Hydrogen Evolution
资助者	Yale University; Global Innovation Initiative from Institute of International Education; National Natural Science Foundation of China [51202255, 51472249, 51221264, 51172239, 51272051, U1401243]; Ministry of Science and Technology of China [2011CB932604, 2014CB932402]; U.S. Department of Energy through Basic Energy Sciences grant [DE-FG02-98ER14882]; National Science Foundation through Yale Materials Research Science and Engineering Center [MRSEC DMR-1119826]
收录类别	sci
语种	英语
WOS记录号	WOS:000364725400080
引用统计	被引频次：232[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74964
专题	中国科学院金属研究所
通讯作者	hailiang.wang@yale.edu
推荐引用方式 GB/T 7714	Weng, Zhe,Liu, Wen,Yin, Li-Chang,et al. Metal/Oxide Interface Nanostructures Generated by Surface Segregation for Electrocatalysis[J]. NANO LETTERS,2015,15(11):7704-7710.
APA	Weng, Zhe.,Liu, Wen.,Yin, Li-Chang.,Fang, Ruopian.,Lo, Min.,...&hailiang.wang@yale.edu.(2015).Metal/Oxide Interface Nanostructures Generated by Surface Segregation for Electrocatalysis.NANO LETTERS,15(11),7704-7710.
MLA	Weng, Zhe,et al."Metal/Oxide Interface Nanostructures Generated by Surface Segregation for Electrocatalysis".NANO LETTERS 15.11(2015):7704-7710.