Stabilized Gold Nanoparticles on Ceria Nanorods by Strong Interfacial Anchoring

	Stabilized Gold Nanoparticles on Ceria Nanorods by Strong Interfacial Anchoring
	Ta, Na 1; Liu, Jingyue (Jimmy)1,2; Chenna, Santhosh 3; Crozier, Peter A.3; Li, Yong 1; Chen, Aling 1; Shen, Wenjie 1
刊名	journal of the american chemical society
	2012-12-26
卷号	134 期号:51 页码:20585-20588
英文摘要	au/ceo2 catalysts are highly active for low-temperature co oxidation and water gas shift reaction, but they deactivate rapidly because of sintering of gold nanoparticles, linked to the collapse or restructuring of the gold-ceria interfacial perimeters. to date, a detailed atomic-level insight into the restructuring of the active gold-ceria interfaces is still lacking. here, we report that gold particles of 2-4 nm size, strongly anchored onto rod-shaped ceo2, are not only highly active but also distinctively stable under realistic reaction conditions. environmental transmission electron microscopy analyses identified that the gold nanoparticles, in response to alternating oxidizing and reducing atmospheres, changed their shapes but did not sinter at temperatures up to 573 k. this finding offers a new strategy to stabilize gold nanoparticles on ceria by engineering the gold-ceria interfacial structure, which could be extended to other oxide-supported metal nanocatalysts.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, multidisciplinary
研究领域[WOS]	chemistry
关键词[WOS]	gas-shift reaction ; co oxidation ; nanocrystalline gold ; carbon-monoxide ; active gold ; catalysts ; deactivation ; particles ; metal ; ceo2
收录类别	SCI
语种	英语
WOS记录号	WOS:000313154200005
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/138021]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA 3.Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA
推荐引用方式 GB/T 7714	Ta, Na,Liu, Jingyue ,Chenna, Santhosh,et al. Stabilized Gold Nanoparticles on Ceria Nanorods by Strong Interfacial Anchoring[J]. journal of the american chemical society,2012,134(51):20585-20588.
APA	Ta, Na.,Liu, Jingyue .,Chenna, Santhosh.,Crozier, Peter A..,Li, Yong.,...&Shen, Wenjie.(2012).Stabilized Gold Nanoparticles on Ceria Nanorods by Strong Interfacial Anchoring.journal of the american chemical society,134(51),20585-20588.
MLA	Ta, Na,et al."Stabilized Gold Nanoparticles on Ceria Nanorods by Strong Interfacial Anchoring".journal of the american chemical society 134.51(2012):20585-20588.