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The application of the EQCM data analysis for the examination of surface oxide formation on Pt-Pd-Ru ternary alloys

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cris.lastimport.scopus2024-02-12T20:26:43Z
dc.abstract.enThe stoichiometry of surface oxides, formed on Pt-Pd-Ru alloys in 0.5 M H2SO4 aqueous solutions, was postulated on the basis of cyclic voltammetric (CV) and the electrochemical quartz crystal microbalance (EQCM) measurements. A procedure of data analysis was elaborated to extract the information on surface oxide properties from the correlations between the EQCM frequency changes and electric charge. The average values of metal oxidation state in the oxides depend on potential of their formation, alloy composition and degree of alloy homogeneity. The highest metal oxidation state (+8) was reached for 10 %Pt-25 %Pd-65 % Ru alloy, while the lowest one (+4) for 35 %Pt-26 %Pd-38 %Ru alloy. Preliminary hydrogen electrosorption on Pd-rich (63 %) or Ru-rich (65 %) Pt-Pd-Ru alloys resulted in a decrease in the average metal oxidation states in surface oxides, whereas for other alloys the influence of hydrogen treatment was negligible
dc.affiliationUniwersytet Warszawski
dc.contributor.authorCzerwiński, Andrzej
dc.contributor.authorSoszko, M.
dc.contributor.authorŁukaszewski, M.
dc.date.accessioned2024-01-26T09:54:24Z
dc.date.available2024-01-26T09:54:24Z
dc.date.issued2023
dc.description.financePublikacja bezkosztowa
dc.description.volume929
dc.identifier.doi10.1016/J.JELECHEM.2022.117060
dc.identifier.issn1572-6657
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/121880
dc.identifier.weblinkhttps://api.elsevier.com/content/article/PII:S1572665722010542?httpAccept=text/xml
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofJournal of Electroanalytical Chemistry
dc.relation.pages117060
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enPt-Pd-Ru alloys
dc.subject.enElectrooxidation
dc.subject.enNoble metal surface oxides
dc.subject.enOxidation state
dc.subject.enElectrochemical quartz crystal microbalance
dc.subject.enCyclic voltammetry
dc.titleThe application of the EQCM data analysis for the examination of surface oxide formation on Pt-Pd-Ru ternary alloys
dc.typeJournalArticle
dspace.entity.typePublication