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dc.creatorObradović, Maja
dc.creatorTripković, Amalija
dc.creatorGojković, Snežana Lj.
dc.date.accessioned2019-01-30T17:31:05Z
dc.date.available2019-01-30T17:31:05Z
dc.date.issued2012
dc.identifier.issn1432-8488
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/1036
dc.description.abstractBulk Pt3Co and nanosized Pt3Co and PtCo alloys supported on high area carbon were investigated as the electrocatalysts for the COads and HCOOH oxidation. Pt3Co alloy with Co electrochemically leached from the surface (Pt skeleton) was employed to separate electronic from ensemble and bifunctional effects of Co. Cyclic voltammetry in 0.1 M HClO4 showed reduced amount of adsorbed hydrogen on Pt sites on Pt3Co alloy compared to pure Pt. However, no significant difference in hydrogen adsorption/desorption and Pt-oxide reduction features between Pt3Co with Pt skeleton structure and bulk Pt was observed. The oxidation of COads on Pt3Co alloy commenced earlier than on Pt, but this effect on Pt3Co with Pt skeleton structure was minor indicating that bifunctional mechanism is stronger than the electronic modification of Pt by Co. The HCOOH oxidation rate on Pt3Co alloy was about seven times higher than on bulk Pt when the reaction rates were compared at 0.4 V, i.e., in the middle of the potential range for the HCOOH oxidation. Like in the case of COads oxidation, Pt skeleton showed similar activity as bulk Pt indicating that the ensemble effect is responsible for the enhanced activity of Pt3Co alloy toward HCOOH oxidation. The comparison of COads and HCOOH oxidation on Pt3Co/C and PtCo/C with the same reaction on Pt/C were qualitatively the same as on bulk materials.en
dc.publisherSpringer, New York
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172060/RS//
dc.rightsrestrictedAccess
dc.sourceJournal of Solid State Electrochemistry
dc.subjectPlatinum-cobalt alloyen
dc.subjectFormic aciden
dc.subjectCarbon monoxideen
dc.subjectElectrochemical oxidationen
dc.subjectElectronic effecten
dc.subjectEnsemble effecten
dc.titleOxidation of carbon monoxide and formic acid on bulk and nanosized Pt-Co alloysen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractОбрадовић, Маја; Гојковиц, Снезана Љ; Трипковиц, Aмалија В.;
dc.citation.volume16
dc.citation.issue2
dc.citation.spage587
dc.citation.epage595
dc.citation.other16(2): 587-595
dc.citation.rankM22
dc.identifier.doi10.1007/s10008-011-1389-5
dc.identifier.rcubConv_2761
dc.identifier.scopus2-s2.0-85027958661
dc.identifier.wos000301040900024
dc.type.versionpublishedVersion


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