Electrochemical properties and dissolved oxygen reduction study on an iron(III)-tetra(o-ureaphenyl)porphyrinosilica matrix surface

dc.creatorRibeiro, ES
dc.creatorGushikem, Y
dc.creatorBiazzotto, JC
dc.creatorSerra, OA
dc.date2002
dc.date2014-11-18T12:41:27Z
dc.date2015-11-26T17:50:19Z
dc.date2014-11-18T12:41:27Z
dc.date2015-11-26T17:50:19Z
dc.date.accessioned2018-03-29T00:33:31Z
dc.date.available2018-03-29T00:33:31Z
dc.identifierJournal Of Porphyrins And Phthalocyanines. Soc Porphyrins & Phthalocyanines, v. 6, n. 41858, n. 527, n. 532, 2002.
dc.identifier1088-4246
dc.identifierWOS:000181250000011
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/65179
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/65179
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/65179
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289647
dc.descriptionElectrochemical reduction of dioxygen on an iron(III)-tetra-o-ureaphenylporphyrinosilica matrix surface ((o)-FeTUPPS) obtained by attachment of the iron porphyrin tetraurea to a silica matrix through the sol-gel process was studied. Cyclic voltammetry and chronoamperometry techniques using as working electrode a carbon paste electrode modified with (o)-FeTUPPS, showed that (o)-FeTUPPS catalyzed O-2 reduction at -0.34 V vs SCE in 0.5, mol.L-1 KCl solution at pH 6. The electrode showed a linear and reproducible response to O-2 concentrations in the range ca. 0.5 and 11 mg.L-1 and was chemically stable under various oxidation-reduction cycles. From rotating disk experiments it was concluded that dissolved O-2 was reduced at the electrode surface to H2O2 in a two-electron process. Copyright (C) 2002 Society of Porphyrins & Phthalocyanines.
dc.description6
dc.description41858
dc.description527
dc.description532
dc.languageen
dc.publisherSoc Porphyrins & Phthalocyanines
dc.publisherDijon
dc.publisherFrança
dc.relationJournal Of Porphyrins And Phthalocyanines
dc.relationJ. Porphyr. Phthalocyanines
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectiron(III) porphyrin
dc.subjectcyclic voltammetry
dc.subjectchronoamperometry
dc.subjectcarbon paste electrode
dc.subjectoxygen sensor
dc.subjectSol-gel Process
dc.subjectGraphite-electrodes
dc.subjectCobalt Porphyrins
dc.subjectCatalytic Reduction
dc.subjectHydrogen-peroxide
dc.subjectElectroreduction
dc.subjectO-2
dc.subjectDioxygen
dc.subjectComplex
dc.subjectBehavior
dc.titleElectrochemical properties and dissolved oxygen reduction study on an iron(III)-tetra(o-ureaphenyl)porphyrinosilica matrix surface
dc.typeArtículos de revistas


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