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Article: Catalytic properties of Pt cluster-decorated CeO2 nanostructures

TitleCatalytic properties of Pt cluster-decorated CeO2 nanostructures
Authors
KeywordsCatalysis
Interface
Nanoclusters
Nanocrystals
Issue Date2011
Citation
Nano Research, 2011, v. 4 n. 1, p. 61-71 How to Cite?
AbstractUniform clusters of Pt have been deposited on the surface of capping-agent-free CeO 2 nanooctahedra and nanorods using electron beam (e-beam) evaporation. The coverage of the Pt nanocluster layer can be controlled by adjusting the e-beam evaporation time. The resulting e-beam evaporated Pt nanocluster layers on the CeO 2 surfaces have a clean surface and clean interface between Pt and CeO 2. Different growth behaviors of Pt on the two types of CeO 2 nanocrystals were observed, with epitaxial growth of Pt on CeO 2 nanooctahedra and random growth of Pt on CeO 2 nanorods. The structures of the Pt clusters on the two different types of CeO 2 nanocrystals have been studied and compared by using them as catalysts for model reactions. The results of hydrogenation reactions clearly showed the clean and similar chemical surface of the Pt clusters in both catalysts. The support-dependent activity of these catalysts was demonstrated by CO oxidation. The Pt/CeO 2 nanorods showed much higher activity compared with Pt/CeO 2 nanooctahedra because of the higher concentration of oxygen vacancies in the CeO 2 nanorods. The structure-dependent selectivity of dehydrogenation reactions indicates that the structures of the Pt on CeO 2 nanorods and nanooctahedra are different. Thes differences arise because the metal deposition behaviors are modulated by the strong metal-metal oxide interactions. © 2011 Tsinghua University Press and Springer-Verlag Berlin Heidelberg.
Persistent Identifierhttp://hdl.handle.net/10722/169605
ISSN
2015 Impact Factor: 8.893
2015 SCImago Journal Rankings: 3.284
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLin, Fen_US
dc.contributor.authorHoang, DTen_US
dc.contributor.authorTsung, CKen_US
dc.contributor.authorHuang, Wen_US
dc.contributor.authorLo, SHYen_US
dc.contributor.authorWood, JBen_US
dc.contributor.authorWang, Hen_US
dc.contributor.authorTang, Jen_US
dc.contributor.authorYang, Pen_US
dc.date.accessioned2012-10-25T04:53:37Z-
dc.date.available2012-10-25T04:53:37Z-
dc.date.issued2011en_US
dc.identifier.citationNano Research, 2011, v. 4 n. 1, p. 61-71en_US
dc.identifier.issn1998-0124en_US
dc.identifier.urihttp://hdl.handle.net/10722/169605-
dc.description.abstractUniform clusters of Pt have been deposited on the surface of capping-agent-free CeO 2 nanooctahedra and nanorods using electron beam (e-beam) evaporation. The coverage of the Pt nanocluster layer can be controlled by adjusting the e-beam evaporation time. The resulting e-beam evaporated Pt nanocluster layers on the CeO 2 surfaces have a clean surface and clean interface between Pt and CeO 2. Different growth behaviors of Pt on the two types of CeO 2 nanocrystals were observed, with epitaxial growth of Pt on CeO 2 nanooctahedra and random growth of Pt on CeO 2 nanorods. The structures of the Pt clusters on the two different types of CeO 2 nanocrystals have been studied and compared by using them as catalysts for model reactions. The results of hydrogenation reactions clearly showed the clean and similar chemical surface of the Pt clusters in both catalysts. The support-dependent activity of these catalysts was demonstrated by CO oxidation. The Pt/CeO 2 nanorods showed much higher activity compared with Pt/CeO 2 nanooctahedra because of the higher concentration of oxygen vacancies in the CeO 2 nanorods. The structure-dependent selectivity of dehydrogenation reactions indicates that the structures of the Pt on CeO 2 nanorods and nanooctahedra are different. Thes differences arise because the metal deposition behaviors are modulated by the strong metal-metal oxide interactions. © 2011 Tsinghua University Press and Springer-Verlag Berlin Heidelberg.en_US
dc.languageengen_US
dc.relation.ispartofNano Researchen_US
dc.subjectCatalysisen_US
dc.subjectInterfaceen_US
dc.subjectNanoclustersen_US
dc.subjectNanocrystalsen_US
dc.titleCatalytic properties of Pt cluster-decorated CeO2 nanostructuresen_US
dc.typeArticleen_US
dc.identifier.emailTang, J: jinyao@hku.hken_US
dc.identifier.authorityTang, J=rp01677en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/s12274-010-0042-4en_US
dc.identifier.scopuseid_2-s2.0-78651515150en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78651515150&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume4en_US
dc.identifier.issue1en_US
dc.identifier.spage61en_US
dc.identifier.epage71en_US
dc.identifier.isiWOS:000287973600005-
dc.identifier.scopusauthoridLin, F=36801990200en_US
dc.identifier.scopusauthoridHoang, DT=36801625700en_US
dc.identifier.scopusauthoridTsung, CK=6602491091en_US
dc.identifier.scopusauthoridHuang, W=7407906424en_US
dc.identifier.scopusauthoridLo, SHY=36801957500en_US
dc.identifier.scopusauthoridWood, JB=36538308200en_US
dc.identifier.scopusauthoridWang, H=36803040100en_US
dc.identifier.scopusauthoridTang, J=12791614900en_US
dc.identifier.scopusauthoridYang, P=7403931988en_US
dc.identifier.citeulike8121604-

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