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dc.contributor.authorMaljusch, Artjom
dc.contributor.authorHenry, John B
dc.contributor.authorTymoczko, Jakub
dc.contributor.authorBandarenka, Aliaksandr S
dc.contributor.authorSchuhmann, Wolfgang
dc.date.accessioned2019-07-02T12:00:46Z
dc.date.available2019-07-02T12:00:46Z
dc.date.issued2013-11-08
dc.identifier.citationMaljusch, A., Henry, J. B., Tymoczko, J., Bandarenka, A. S. and Schuhmann, W. (2014) Characterisation of non-uniform functional surfaces: towards linking basic surface properties with electrocatalytic activity, RSC Advances, 4(204), p. 1532.en
dc.identifier.issn2046-2069en
dc.identifier.doi10.1039/c3ra45845hen
dc.identifier.urihttp://hdl.handle.net/2436/622510
dc.description.abstractFunctional materials, particularly heterogeneous catalysts, are often non-uniform at a microscopic level making their detailed characterisation extremely complex. This complexity inhibits the design and implementation of novel functional materials as such characterisation is a key to understanding interfaces for heterogeneous catalysis. We demonstrate that a combination of Scanning Kelvin Probe (SKP) and Scanning Electrochemical Microscopy (SECM) experiments made over the same sample surface using an integrated SKP–SECM system provides a powerful and robust tool to link basic surface properties with the observed electrocatalytic activity. As the SKP-response can be accurately assessed using modern quantum chemical approaches to benchmark analytical signals for different surface structures with varying compositions, application of an integrated SKP–SECM system can offer valuable insight into the origin of the observed electrocatalytic activity. As model objects, we used Pt(111)-like thin films modified with sub-monolayer and monolayer amounts of Cu atoms located at the electrode surface and in the sub-surface region. The exact position of the Cu atoms relative to the topmost Pt layer greatly affects basic surface properties and governs the electrocatalytic activity of the surface towards various reactions, i.e. the oxygen reduction reaction. SKP–SECM appeared to be a very sensitive tool to monitor those changes as a function of the spatial coordinates.en
dc.description.sponsorshipFinancial support by the EU and the state NRW in the framework of the HighTech. NRW program is gratefully acknowledged. A.S.B. and W.S. additionally acknowledge financial support in the framework of Helmholtz-Energie-Allianz “Stationäre elektrochemische Speicher und Wandler” (HA-E-0002) and the Cluster of Excellence RESOLV (EXC 1069) funded by the DFG (Deutsche Forschungsgemeinschaft).en
dc.formatapplication/PDFen
dc.languageen
dc.language.isoenen
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttps://pubs.rsc.org/en/content/articlelanding/2014/RA/C3RA45845H#!divAbstracten
dc.titleCharacterisation of non-uniform functional surfaces: towards linking basic surface properties with electrocatalytic activityen
dc.typeJournal articleen
dc.identifier.eissn2046-2069
dc.identifier.journalRSC ADVANCESen
dc.date.updated2019-06-21T10:30:15Z
dc.date.accepted2013-11-06
rioxxterms.funderUniversity of Wolverhamptonen
rioxxterms.identifier.projectUOW020719JHen
rioxxterms.versionVoRen
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by-nc/4.0/en
rioxxterms.licenseref.startdate2019-07-02en
dc.source.volume4
dc.source.issue4
dc.source.beginpage1532
dc.source.endpage1537
dc.description.versionPublished version
refterms.dateFCD2019-07-02T12:00:34Z
refterms.versionFCDVoR
refterms.dateFOA2019-07-02T12:00:46Z


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