Electrochemical behavior of ruthenium-hexacyanoferrate modified glassy carbon electrode and catalytic activity towards ethanol electrooxidation

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dc.contributor.authorCosta, Wendell M.
dc.contributor.authorCardoso, William S.
dc.contributor.authorMarques, Edmar P.
dc.contributor.authorBezerra, Cicero W.B.
dc.contributor.authorFerreira, Antonio Ap.P. [UNESP]
dc.contributor.authorSong, Chaojie
dc.contributor.authorZhang, Jiujun
dc.contributor.authorMarques, Aldaléa L.B.
dc.contributor.institutionFederal University of Maranhão
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionNational Research Council of Canada
dc.date.accessioned2014-05-27T11:29:28Z
dc.date.available2014-05-27T11:29:28Z
dc.date.issued2013-05-06
dc.description.abstractRuthenium-based hexacyanoferrate (RuHCF) thin film modified glassy carbon electrode was prepared by drop evaporation method. The RuHCF modified electrode exhibited four redox couples in strong acidic solution (pH 1.5) attributed to Fe(CN)6 3- ion and three ruthenium forms (Ru(II), Ru(III) and Ru(IV)), characteristic of ruthenium oxide compounds. The modified electrode displayed excellent electrocatalytic activity towards ethanol oxidation in the potential region where electrochemical processes Ru(III)-O-Ru(IV) and Ru(IV)-O-Ru(VI) occur. Impedance spectroscopy data indicated that the charge transfer resistance decreased with the increase of the applied potential and ethanol concentration, indicating the use of the RuHCF modified electrode as an ethanol sensor. Under optimized conditions, the sensor responded linearly and rapidly to ethanol concentration between 0.03 and 0.4 mol L-1 with a limit of detection of 0.76 mmol L-1, suggesting an adequate sensitivity in ethanol analyses. Printed in Brazil - ©2013 Sociedade Brasileira de Química.en
dc.description.affiliationDepartment of Technology Chemistry Federal University of Maranhão, 65085-580 São Luis-MA
dc.description.affiliationDepartment of Chemistry Federal University of Maranhão, 65085-580 São Luis-MA
dc.description.affiliationInstitute of Chemistry State University of São Paulo (UNESP), 16015-050 Araraquara-SP
dc.description.affiliationEnergy, Mining and Environment Portfolio National Research Council of Canada, Vancouver, BC
dc.description.affiliationUnespInstitute of Chemistry State University of São Paulo (UNESP), 16015-050 Araraquara-SP
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipPROPe UNESP (Brazil)
dc.description.sponsorshipEnergy, Mining and Environment, National Research Council Canada
dc.description.sponsorshipIdCNPq: 475636/2008-2
dc.format.extent651-656
dc.identifierhttp://dx.doi.org/10.5935/0103-5053.20130082
dc.identifier.citationJournal of the Brazilian Chemical Society, v. 24, n. 4, p. 651-656, 2013.
dc.identifier.doi10.5935/0103-5053.20130082
dc.identifier.file2-s2.0-84876920044.pdf
dc.identifier.issn0103-5053
dc.identifier.issn1678-4790
dc.identifier.scopus2-s2.0-84876920044
dc.identifier.urihttp://hdl.handle.net/11449/75359
dc.identifier.wosWOS:000319999500017
dc.language.isoeng
dc.relation.ispartofJournal of the Brazilian Chemical Society
dc.relation.ispartofjcr1.444
dc.relation.ispartofsjr0,357
dc.relation.ispartofsjr0,357
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectChronoamperometry
dc.subjectCyclic voltammetry
dc.subjectElectrochemical impedance
dc.subjectEthanol sensor
dc.subjectRuthenium-hexacyanoferrate
dc.titleElectrochemical behavior of ruthenium-hexacyanoferrate modified glassy carbon electrode and catalytic activity towards ethanol electrooxidationen
dc.typeArtigo
dcterms.licensehttp://jbcs.sbq.org.br/copyright

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