Приказ основних података о документу

dc.creatorElezović, Nevenka R.
dc.creatorBabić, Biljana M.
dc.creatorVracar, L. J. M.
dc.creatorKrstajić, Nedeljko V.
dc.date.accessioned2022-04-05T14:13:25Z
dc.date.accessioned2023-01-18T13:48:16Z
dc.date.available2022-04-05T14:13:25Z
dc.date.available2023-01-18T13:48:16Z
dc.date.issued2007
dc.identifier.issn0352-5139
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/5493
dc.description.abstractThe oxygen reduction reaction was investigated in 0.1 M NaOH solution, on a porous coated electrode formed of Pt particles supported on carbon cryogel. The Pt/C catalyst was characterized by the X-ray diffraction (XRD), transmission electron microscopy (TEM) and cyclic voltammetry techniques. The results demonstrated a successful reduction of Pt to metallic form and homogenous Pt particle size distribution with a mean particle size of about 2.7 nm. The ORR kinetics was investigated by linear sweep polarization at a rotating disc electrode. The results showed the existence of two E - log j regions, usually referred to polycrystalline Pt in acid and alkaline solution. At low Current densities (led), the Tafel slope was found to be close to -2.3RT/F, while at high current densities (bed) it was found to be close to -2x2.3RT/F. It is proposed that the main path in the ORR mechanism on Pt particles was the direct four-electron process, with the transfer of the first electron as the rate determining step. If the activities are expressed through the specific current densities, a small enhancement of the catalytic activity for Pt/C was observed compared to that of polycrystalline Pt. The effect of the Pt particle size on the electrocatalysis of oxygen reduction was ascribed to the predominant (111) facets of the platinum crystallites.en
dc.publisherSrpsko hemijsko društvo, Beograd
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceJournal of the Serbian Chemical Society
dc.subjectPt nanoparticlesen
dc.subjectoxygen reduction reactionen
dc.subjectcarbon supporten
dc.subjectalkaline solutionsen
dc.titleOxygen reduction at platinum nanoparticles supported on carbon cryogel in alkaline solutionen
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage708
dc.citation.issue7
dc.citation.other72(7): 699-708
dc.citation.rankM23
dc.citation.spage699
dc.citation.volume72
dc.identifier.doi10.2298/JSC0707699E
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/14315/223.pdf
dc.identifier.scopus2-s2.0-34447532144
dc.identifier.wos000248193600008
dc.type.versionpublishedVersion


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Приказ основних података о документу