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Effects of heat treatments on the electrocatalytic activity of Pt-Ru/C for methanol oxidation

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dc.contributor.authorGodoi, Denis Ricardo Martins de [UNESP]
dc.contributor.authorPerez, J. [UNESP]
dc.contributor.authorVillullas, H. M. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:23:43Z
dc.date.available2014-05-27T11:23:43Z
dc.date.issued2008-12-01
dc.description.abstractThe Pt-Ru/C materials of this study were prepared by a microemulsion method with fixed water to surfactant molar ratio and heat treated at low temperatures, to avoid changes in the average particle size, in different atmospheres. All samples were characterized by X-ray diffraction (XRD) and the mean crystallite size was estimated by using Scherrer's equation. Catalysts morphology was characterized by transmission electron microscopy (TEM). Average composition was obtained by energydispersive X-ray analysis (EDX). The general electrochemical behavior was evaluated by cyclic voltammetry in 0.5 M sulfuric acid and the electrocatalytic activity towards the oxidation of methanol was studied in 0.5 M methanol acid solutions by potential sweeps and chronoamperometry. Oxidation of adsorbed CO was used to estimate the electrochemical active area and to infer the surface properties. ©The Electrochemical Society.en
dc.description.affiliationInstitute of Chemistry São Paulo State University (UNESP), CP 355, 14801-970, Araraquara (SP)
dc.description.affiliationUnespInstitute of Chemistry São Paulo State University (UNESP), CP 355, 14801-970, Araraquara (SP)
dc.format.extent35-41
dc.identifierhttp://dx.doi.org/10.1149/1.2953504
dc.identifier.citationECS Transactions, v. 11, n. 31, p. 35-41, 2008.
dc.identifier.doi10.1149/1.2953504
dc.identifier.issn1938-5862
dc.identifier.issn1938-6737
dc.identifier.scopus2-s2.0-65649108959
dc.identifier.urihttp://hdl.handle.net/11449/70691
dc.language.isoeng
dc.relation.ispartofECS Transactions
dc.relation.ispartofsjr0,225
dc.relation.ispartofsjr0,225
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAcid solutions
dc.subjectActive area
dc.subjectAdsorbed CO
dc.subjectAverage composition
dc.subjectAverage particle size
dc.subjectEffects of heat treatment
dc.subjectElectrocatalytic activity
dc.subjectElectrochemical behaviors
dc.subjectFixed water
dc.subjectLow temperatures
dc.subjectMethanol Oxidation
dc.subjectMicroemulsion method
dc.subjectMolar ratio
dc.subjectOxidation of methanol
dc.subjectPotential sweep
dc.subjectScherrer's equation
dc.subjectTEM
dc.subjectAcids
dc.subjectCarbon monoxide
dc.subjectChemical analysis
dc.subjectChronoamperometry
dc.subjectCrystallite size
dc.subjectElectrocatalysis
dc.subjectElectrochemical properties
dc.subjectElectrochemical sensors
dc.subjectEnergy conversion
dc.subjectHeat treatment
dc.subjectMethanol
dc.subjectMicroemulsions
dc.subjectNanostructured materials
dc.subjectOxidation
dc.subjectPlatinum
dc.subjectSulfuric acid
dc.subjectSurface active agents
dc.subjectSurface properties
dc.subjectTransmission electron microscopy
dc.subjectX ray diffraction
dc.subjectCyclic voltammetry
dc.titleEffects of heat treatments on the electrocatalytic activity of Pt-Ru/C for methanol oxidationen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.electrochem.org/dl/support/assets/crtf.pdf
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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Araraquara - IQAR - Instituto de Química