Publication:
Weakening the strength of CO binding on subsurface alloyed Pt(111)

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dc.contributor.coauthorOgasawara, Hirohito
dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentN/A
dc.contributor.kuauthorKaya, Sarp
dc.contributor.kuauthorGürlek, Sezen
dc.contributor.kuauthorPanahi, Mohammad
dc.contributor.kuauthorSolati, Navid
dc.contributor.kuprofileFaculty Member
dc.contributor.kuprofilePhD Student
dc.contributor.otherDepartment of Chemistry
dc.contributor.researchcenterKoç University Tüpraş Energy Center (KUTEM) / Koç Üniversitesi Tüpraş Enerji Merkezi (KÜTEM)
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGraduate School of Sciences and Engineering
dc.contributor.yokid116541
dc.contributor.yokidN/A
dc.contributor.yokidN/A
dc.contributor.yokidN/A
dc.date.accessioned2024-11-09T13:49:50Z
dc.date.issued2019
dc.description.abstractThe interaction of CO with Pt/3d/Pt(111) subsurface alloys (3d: Ni, Co, Fe) was investigated by combination of vibrational spectroscopy and temperature programmed desorption. The binding strength of CO is significantly reduced on Pt/Fe/Pt(111) and Pt/Co/Pt(111) and is sorted in the following order: Pt >Ni > Co approximate to Fe. Our analysis shows that the 3d admetal is stable in the subsurface region and CO is linearly bonded to the atop sites of the Pt(111) surface. At high CO coverage, compressed structures are obtained. At low CO coverage, the desorption activation energy of CO (similar to 143 kJ/mol for Pt(111)) drops to 124 kJ/mol for Pt/Ni/Pt(111), and goes further down to 111 and 110 kJ/mol for Pt/Co/Pt(111) and Pt/Fe/Pt(111), respectively. The enhancement in the surface activity is attributed to the modified backdonation to the antibonding states of adsorbed CO due to the downshifted 5d-band center of Pt upon embedding 3d metals in the subsurface region.
dc.description.fulltextYES
dc.description.indexedbyWoS
dc.description.indexedbyScopus
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuTÜBİTAK
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TÜBİTAK)
dc.description.sponsorshipTARLA
dc.description.versionAuthor's final manuscript
dc.description.volume682
dc.formatpdf
dc.identifier.doi10.1016/j.susc.2018.11.018
dc.identifier.eissn1879-2758
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR02049
dc.identifier.issn0039-6028
dc.identifier.linkhttps://doi.org/10.1016/j.susc.2018.11.018
dc.identifier.quartileN/A
dc.identifier.scopus2-s2.0-85058699710
dc.identifier.urihttps://hdl.handle.net/20.500.14288/3885
dc.identifier.wos462690900001
dc.keywordsInfrared reflection-absorbtion
dc.keywordsBimetallic surfaces
dc.keywordsCarbon-monoxide
dc.keywordsChemical properties
dc.keywordsAdsorption
dc.keywordsSpectroscopy
dc.keywordsCatalysis
dc.keywordsNI(111)
dc.keywordsChemisorption
dc.keywordsEludication
dc.languageEnglish
dc.publisherElsevier
dc.relation.grantno113Z654
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/8664
dc.sourceSurface Science
dc.subjectChemistry, physical
dc.subjectPhysics, condensed matter
dc.titleWeakening the strength of CO binding on subsurface alloyed Pt(111)
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.authorid0000-0002-2591-5843
local.contributor.authoridN/A
local.contributor.authoridN/A
local.contributor.authoridN/A
local.contributor.kuauthorKaya, Sarp
local.contributor.kuauthorGürlek, Sezen
local.contributor.kuauthorPanahi, Mohammad
local.contributor.kuauthorSolati, Navid
relation.isOrgUnitOfPublication035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isOrgUnitOfPublication.latestForDiscovery035d8150-86c9-4107-af16-a6f0a4d538eb

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