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Different reactivity of the various platinum oxides and chemisorbed oxygen in co oxidation on pt(111)

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dc.contributor.coauthorMiller, Daniel
dc.contributor.coauthorCasalongue, Hernan Sanchez
dc.contributor.coauthorBluhm, Hendrik
dc.contributor.coauthorOgasawara, Hirohito
dc.contributor.coauthorNilsson, Anders
dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentDepartment of Chemistry
dc.contributor.kuauthorKaya, Sarp
dc.contributor.kuprofileFaculty Member
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.yokid116541
dc.date.accessioned2024-11-09T23:03:00Z
dc.date.issued2014
dc.description.abstractWe have used X-ray photoelectron spectroscopy and polarization-resolved 0 K-edge X-ray absorption spectroscopy to investigate the reactivity of various oxygen covered Pt(111) surfaces, which emerge under high temperature and pressure conditions, toward CO. We find that the reactivity of the O/Pt(111) system decreases monotonically with increasing oxygen coverage. of the three surface oxygen phases, viz., chemisorbed oxygen (O-ad), a PtO-like surface oxide, and alpha-PtO2 trilayers, O-ad exhibits the highest reactivity toward CO, whereas alpha-PtO2 trilayers exhibit the lowest. Pt(111) surfaces fully terminated by alpha-PtO2 trilayers are inert to CO. Here it is proposed that the reactive phase is either O-ad or PtO-like surface oxide phase on bare non-CO poisoned Pt regions with PtO2 as majority spectator species.
dc.description.indexedbyWoS
dc.description.indexedbyScopus
dc.description.issue17
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipU.S. Department of Energy (DOE), Basic Energy Science (BES) through the SUNCAT Center for Interface Science and Catalysis [DE-AC02-76SF00515]
dc.description.sponsorshipStanford Synchrotron Radiation Laboratory
dc.description.sponsorshipOffice of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences and Materials Sciences Division of the US Department of Energy at the Lawrence Berkeley National Laboratory [DE-AC02-05CH11231] This work was supported by the U.S. Department of Energy (DOE), Basic Energy Science (BES) under contract DE-AC02-76SF00515 through the SUNCAT Center for Interface Science and Catalysis and the Stanford Synchrotron Radiation Laboratory, a national user facility operated by Stanford University on behalf of the DOE, Office of BES. The ALS and the MES beamline 11.0.2 are supported by the Director, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences and Materials Sciences Division of the US Department of Energy at the Lawrence Berkeley National Laboratory under contract no. DE-AC02-05CH11231.
dc.description.volume136
dc.identifier.doi10.1021/ja413125q
dc.identifier.eissn1520-5126
dc.identifier.issn0002-7863
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-84899707567
dc.identifier.urihttp://dx.doi.org/10.1021/ja413125q
dc.identifier.urihttps://hdl.handle.net/20.500.14288/8378
dc.identifier.wos335369200037
dc.keywordsPressures. 2. palladium
dc.keywordsPt-group metals
dc.keywordsUltrahigh-vacuum
dc.keywordsSpectroscopy
dc.languageEnglish
dc.publisherAmerican Chemical Society (ACS)
dc.sourceJournal of the American Chemical Society
dc.subjectChemistry, Multidisciplinary
dc.titleDifferent reactivity of the various platinum oxides and chemisorbed oxygen in co oxidation on pt(111)
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.authorid0000-0002-2591-5843
local.contributor.kuauthorKaya, Sarp
relation.isOrgUnitOfPublication035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isOrgUnitOfPublication.latestForDiscovery035d8150-86c9-4107-af16-a6f0a4d538eb

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