Приказ основних података о документу

dc.creatorElezović, Nevenka R.
dc.creatorBabić, Biljana M.
dc.creatorRadmilović, Velimir R
dc.creatorVračar, Ljiljana M
dc.creatorKrstajić, Nedeljko V
dc.date.accessioned2022-04-05T14:21:47Z
dc.date.available2022-04-05T14:21:47Z
dc.date.issued2009
dc.identifier.issn0013-4686
dc.identifier.urihttp://rimsi.imsi.bg.ac.rs/handle/123456789/348
dc.description.abstractThe oxygen reduction reaction (ORR) was studied at carbon supported MoOx-Pt/C and TiOx-Pt nanocatalysts in 0.5 mol dm(-3) HClO4 solution, at 25 degrees C. The MoOx-Pt/C and TiOx-Pt/C catalysts were prepared by the polyole method combined by MoOx or TiOx post-deposition. Home made catalysts were characterized by TEM and EDX techniques. It was found that catalyst nanoparticles were homogenously distributed over the carbon support with a mean particle size about 2.5 nm. Quite similar distribution and particle size was previously obtained for Pt/C catalyst. Results confirmed that MoOx and TiOx post-deposition did not lead to a significant growth of the Pt nanoparticles. The ORR kinetics was investigated by cyclic voltammetry and linear sweep voltammetry at the rotating disc electrode. These results showed the existence of two E - logj regions, usually observed with polycrystalline Pt in acid solution. It was proposed that the main path in the ORR mechanism on MoOx-Pt/C and TiOx-Pt/C catalysts was the direct four-electron process with the transfer of the first electron as the rate-determining step. The increase in catalytic activity for ORR on MoOx-Pt/C and TiOx-Pt/C catalysts, in comparison with Pt/C catalyst, was explained by synergetic effects due to the formation of the interface between the platinum and oxide materials and by spillover due to the surface diffusion of oxygen reaction intermediates.en
dc.publisherPergamon-Elsevier Science Ltd, Oxford
dc.rightsrestrictedAccess
dc.sourceElectrochimica Acta
dc.subjectTiOx-Pt/C catalysten
dc.subjectOxygen reduction reactionen
dc.subjectNanoparticlesen
dc.subjectMoOx-Pt/C catalysten
dc.subjectAcid solutionen
dc.titleSynthesis and characterization of MoOx-Pt/C and TiOx-Pt/C nano-catalysts for oxygen reductionen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage2409
dc.citation.issue9
dc.citation.other54(9): 2404-2409
dc.citation.rankM21
dc.citation.spage2404
dc.citation.volume54
dc.identifier.doi10.1016/j.electacta.2008.03.015
dc.identifier.scopus2-s2.0-61449084812
dc.identifier.wos000264743900002
dc.type.versionpublishedVersion


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Приказ основних података о документу