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AuthorKlein, Jensdc.contributor.author
Date of accession2021-01-08T11:30:52Zdc.date.accessioned
Available in OPARU since2021-01-08T11:30:52Zdc.date.available
Year of creation2020dc.date.created
Date of first publication2020dc.date.issued
AbstractIn the present work nanostructured single crystals, which serve as 2D model electrodes for complex 3D NPs, were prepared under UHV conditions to study structure-activity relationships between structural parameters of 3D NPs and their activity for fuel cell relevant electrocatalytic reactions. A specific structural parameter of interest was varied systematically at the surface of the nanostructured single crystals. STM imaging under UHV conditions enabled a direct visual control over the quality of the model electrode surfaces and provided quantitative information on the abundance of the specific structural parameter. Electrochemical / -catalytic measurements were performed on the electrodes in a newly designed electrochemical flow cell set-up. Comparing the reactivity of the electrodes with the abundance of the respective structural parameter allowed to derive an unambiguous structure-activity relationship. The structural integrity of the model electrodes was controlled by STM imaging under UHV conditions subsequent to the electrocatalytic measurements to avoid misinterpretations due to a possible restructuring of the electrode surface. Comparing the experimental results with previously reported theoretical studies on structural, chemical and electronic properties of respective 2D model systems helped for a stringent correlation between surface structure and activity.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandarddc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v3dc.rights.uri
KeywordModelloberflächedc.subject
KeywordCO Oxidationdc.subject
KeywordMethanol Oxidationdc.subject
KeywordWasserstoff Entwicklungdc.subject
Dewey Decimal GroupDDC 540 / Chemistry & allied sciencesdc.subject.ddc
LCSHElectrocatalysisdc.subject.lcsh
LCSHScanning tunneling microscopydc.subject.lcsh
LCSHNanostructured materialsdc.subject.lcsh
LCSHFuel cellsdc.subject.lcsh
TitleStructure-activity relationships of Pt based model electrodes in electrocatalysisdc.title
Resource typeDissertationdc.type
Date of acceptance2020-11-25dcterms.dateAccepted
RefereeBehm, Rolf Jürgendc.contributor.referee
RefereeGroß, Axeldc.contributor.referee
DOIhttp://dx.doi.org/10.18725/OPARU-34174dc.identifier.doi
PPN1745535047dc.identifier.ppn
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-oparu-34236-0dc.identifier.urn
GNDElektrokatalysedc.subject.gnd
GNDRastertunnelmikroskopiedc.subject.gnd
GNDUltrahochvakuumdc.subject.gnd
GNDPlatindc.subject.gnd
GNDPlatinelektrodedc.subject.gnd
FacultyFakultät für Naturwissenschaftenuulm.affiliationGeneral
InstitutionInstitut für Oberflächenchemie und Katalyseuulm.affiliationSpecific
InstitutionInstitut für Theoretische Chemieuulm.affiliationSpecific
Grantor of degreeFakultät für Naturwissenschaftenuulm.thesisGrantor
DCMI TypeTextuulm.typeDCMI
CategoryPublikationenuulm.category
Bibliographyuulmuulm.bibliographie


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