Publication:
Step-edge decoration and clustering of Pt atoms on a Cu(211) stepped surface

dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.departmentKUTEM (Koç University Tüpraş Energy Center)
dc.contributor.kuauthorKaya, Sarp
dc.contributor.kuauthorMohammadpour, Amin
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.contributor.schoolcollegeinstituteResearch Center
dc.date.accessioned2024-12-29T09:38:36Z
dc.date.issued2024
dc.description.abstractThe atomic manipulation of the low-coordination sites of metal catalysts can give rise to activity enhancement;however, it is rather challenging to locally probe the dynamic changes and activities of these sites. Herein, step-edge/terrace site decoration and site exchange of Pt atoms with a stepped Cu(211) surface were investigated by a combination of infrared reflection absorption spectroscopy (IRRAS) and temperature-programmed desorption (TPD) of carbon monoxide (CO). For a low coverage of Pt, step decoration and site exchange with Cu were found to be two pathways to isolate Pt as single atoms. CO preferentially adsorbs near the Cu step sites on the lower terrace, and the binding energies of CO show strong Pt coverage dependence. The presence of Pt on terrace and step sites modifies the binding energy of CO absorbed on Cu in the proximity. Increased Pt-Pt lateral coordination changes the site preference;however, the reduced binding energy of CO to Pt is attributed to heteroatom bond formation rather than the strain induced by the lattice mismatch.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue13
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuTÜBİTAK
dc.description.sponsorshipThis work was supported by The Scientific and Technical Research Council of Turkiye (TUBITAK) (grant number: 118F137).
dc.description.volume128
dc.identifier.doi10.1021/acs.jpcc.3c04776
dc.identifier.eissn1932-7455
dc.identifier.issn1932-7447
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-85184816567
dc.identifier.urihttps://doi.org/10.1021/acs.jpcc.3c04776
dc.identifier.urihttps://hdl.handle.net/20.500.14288/22748
dc.identifier.wos1160870300001
dc.keywordsAdsorption
dc.keywordsDeposition
dc.keywordsDesorption
dc.keywordsMolecules
dc.keywordsPlatinum
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.grantnoTrkiye Bilimsel ve Teknolojik Arastirma Kurumu [118F137]
dc.relation.grantnoScientific and Technical Research Council of Turkiye (TUBITAK)
dc.relation.ispartofJournal of Physical Chemistry C
dc.subjectChemistry
dc.subjectPhysical chemistry
dc.subjectNanoscience and nanotechnology
dc.subjectMaterials science
dc.titleStep-edge decoration and clustering of Pt atoms on a Cu(211) stepped surface
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorMohammadpour, Amin
local.contributor.kuauthorKaya, Sarp
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Sciences
local.publication.orgunit1Research Center
local.publication.orgunit2Department of Chemistry
local.publication.orgunit2KUTEM (Koç University Tüpraş Energy Center)
local.publication.orgunit2Graduate School of Sciences and Engineering
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