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Stabilized Gold Nanoparticles on Ceria Nanorods by Strong Interfacial Anchoring
Ta, Na1; Liu, Jingyue (Jimmy)1,2; Chenna, Santhosh3; Crozier, Peter A.3; Li, Yong1; Chen, Aling1; Shen, Wenjie1
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2012-12-26
DOI10.1021/ja310341j
Volume134Issue:51Pages:20585-20588
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordGAS-SHIFT REACTION ; CO OXIDATION ; NANOCRYSTALLINE GOLD ; CARBON-MONOXIDE ; ACTIVE GOLD ; CATALYSTS ; DEACTIVATION ; PARTICLES ; METAL ; CEO2
AbstractAu/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.
Language英语
WOS IDWOS:000313154200005
Citation statistics
Cited Times:184[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/138021
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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