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Oxide formation as probe to investigate the competition between water and alcohol molecules for OH species adsorbed on platinum

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dc.contributor.authorSantiago, Patrícia V.B.-
dc.contributor.authorOliveira, R.A.G.-
dc.contributor.authorRoquetto, Júlia Maria-
dc.contributor.authorAkiba, Naomi-
dc.contributor.authorGaubeur, Ivanise-
dc.contributor.authorAngelucci, Camilo Andrea-
dc.contributor.authorSouza-Garcia, Janaina-
dc.contributor.authorFeliu, Juan M.-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Físicaes_ES
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Electroquímicaes_ES
dc.date.accessioned2019-07-04T10:32:30Z-
dc.date.available2019-07-04T10:32:30Z-
dc.date.issued2019-09-10-
dc.identifier.citationElectrochimica Acta. 2019, 317: 694-700. doi:10.1016/j.electacta.2019.06.037es_ES
dc.identifier.issn0013-4686 (Print)-
dc.identifier.issn1873-3859 (Online)-
dc.identifier.urihttp://hdl.handle.net/10045/93809-
dc.description.abstractThe creation of defects on the surface of Pt(111) and Pt(100) and the dissolution of Pt were used as probes to investigate the oxidation of the surface in the absence and in the presence of methanol, ethanol, glycerol and ethylene glycol. Electrochemical and Graphite Furnace Atomic Absorption Spectrometry showed that in the presence of ethanol, glycerol and ethylene glycol, in the same potential window, the formation of defects is decreased in comparison to the oxidation of platinum in the absence of these alcohols. Since both the oxidation of the alcohols and the oxidation of the surface depend on PtOH formation, the competition for this species can displace the potential at which the oxidation of the surface oxidation to PtO is favored in the presence of ethanol, glycerol and ethylene glycol. On the other hand, the presence of methanol does not influence the oxidation and subsequent disordering of the surface, possibly because this reaction takes place in parallel with platinum oxidation to PtO.es_ES
dc.description.sponsorshipThis study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brasil (CAPES), Finance Code 001. The authors also thank FAPESP (projects 2013/13749–0 and 2016/23878-0) and CNPq for PIC/PIBIC (R.A.G. Oliveira and J.M. Roquetto) and DAI (N. Akiba) scholarships and projects 474590/2013–5 and 456758/2014–3. The authors are grateful to the Multiuser Central Facilities (UFABC) for experimental support.es_ES
dc.languageenges_ES
dc.publisherElsevieres_ES
dc.rights© 2019 Elsevier Ltd.es_ES
dc.subjectPlatinum oxidationes_ES
dc.subjectSurface disorderinges_ES
dc.subjectPlatinum dissolutiones_ES
dc.subjectAlcohol electrooxidationes_ES
dc.subject.otherQuímica Físicaes_ES
dc.titleOxide formation as probe to investigate the competition between water and alcohol molecules for OH species adsorbed on platinumes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.peerreviewedsies_ES
dc.identifier.doi10.1016/j.electacta.2019.06.037-
dc.relation.publisherversionhttps://doi.org/10.1016/j.electacta.2019.06.037es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
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