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Characterization of azo dyes on Pt and Pt/polyaniline/dispersed Pt electrodes

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Characterization of azo dyes on Pt and Pt/polyaniline/dispersed Pt electrodes

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dc.contributor.author Molina Puerto, Javier es_ES
dc.contributor.author Fernández Sáez, Javier es_ES
dc.contributor.author Del Río García, Ana Isabel es_ES
dc.contributor.author Bonastre Cano, José Antonio es_ES
dc.contributor.author Cases Iborra, Francisco Javier es_ES
dc.date.accessioned 2014-03-21T09:21:33Z
dc.date.issued 2012-06-15
dc.identifier.issn 0169-4332
dc.identifier.uri http://hdl.handle.net/10251/36550
dc.description.abstract The electrochemical characterization of two organic dyes (amaranth and procion orange MX-2R) has been performed on Pt electrodes and Pt electrodes coated with polyaniline and dispersed Pt. Electrodes with different Pt loads have been synthesized and characterized obtaining that a load of 300 ¿g cm -2 was the optimum one. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) was employed to observe the distribution and morphology of the Pt nanoparticles. The electroactivity of the electrodes has also been characterized by means of scanning electrochemical microscopy (SECM). The chemical characterization of Pt dispersed Pani coated Pt electrodes (Pt-Pani-Pt) was performed by means of X-ray photoelectron spectroscopy (XPS). The electrochemical characterization of the dyes has been performed by means of cyclic voltammetry. Voltammograms have shown that the presence of the dyes diminishes characteristic Pt oxidation and reduction peaks. However, redox processes due to the dyes, appeared in the voltammograms. The different species responsible of these redox processes were generated in the vicinity of the electrode and were not adsorbed on the electrode surface since after stirring, the different redox processes disappeared. Characterization with different scan rates showed that redox processes of both dyes were controlled by diffusion. © 2012 Elsevier B.V. es_ES
dc.description.sponsorship Authors thank to the Spanish Ministerio de Ciencia e Innovacion and European Union Funds (FEDER) (contracts CTM2010-18842-C02-02 and CTM2011-23583) and Universitat Politecnica de Valencia (Vicerrectorado de Investigacion PAID-06-10 contract 003-233) for the financial support. J. Molina is grateful to the Conselleria d'Educacio (Generalitat Valenciana) for the FPI fellowship. A.I. del Rio is grateful to the Spanish Ministerio de Ciencia y Tecnologia for the FPI fellowship. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Spanish Ministerio de Ciencia e Innovacion es_ES
dc.relation European Union [CTM2010-18842-C02-02, CTM2011-23583] es_ES
dc.relation Universitat Politecnica de Valencia (Vicerrectorado de Investigacion) [PAID-06-10, 003-233] es_ES
dc.relation Conselleria d'Educacio (Generalitat Valenciana) es_ES
dc.relation Spanish Ministerio de Ciencia y Tecnologia es_ES
dc.relation.ispartof Applied Surface Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Atomic force microscopy es_ES
dc.subject Cyclic voltammetry es_ES
dc.subject Dispersed platinum es_ES
dc.subject Dye es_ES
dc.subject Polyaniline es_ES
dc.subject Scanning electrochemical microscopy es_ES
dc.subject Chemical characterization es_ES
dc.subject Electro-activity es_ES
dc.subject Electrochemical characterizations es_ES
dc.subject Electrode surfaces es_ES
dc.subject Organic dye es_ES
dc.subject Oxidation and reduction es_ES
dc.subject Pt electrode es_ES
dc.subject Pt nanoparticles es_ES
dc.subject Redox process es_ES
dc.subject Scan rates es_ES
dc.subject Voltammograms es_ES
dc.subject Azo dyes es_ES
dc.subject Characterization es_ES
dc.subject Dyes es_ES
dc.subject Electrodes es_ES
dc.subject Photoelectrons es_ES
dc.subject Scanning electron microscopy es_ES
dc.subject X ray photoelectron spectroscopy es_ES
dc.subject Platinum es_ES
dc.subject.classification QUIMICA FISICA es_ES
dc.title Characterization of azo dyes on Pt and Pt/polyaniline/dispersed Pt electrodes es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1016/j.apsusc.2012.02.150
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Textil y Papelera - Departament d'Enginyeria Tèxtil i Paperera es_ES
dc.description.bibliographicCitation Molina Puerto, J.; Fernández Sáez, J.; Del Río García, AI.; Bonastre Cano, JA.; Cases Iborra, FJ. (2012). Characterization of azo dyes on Pt and Pt/polyaniline/dispersed Pt electrodes. Applied Surface Science. 258:6246-6256. doi:10.1016/j.apsusc.2012.02.150 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.apsusc.2012.02.150 es_ES
dc.description.upvformatpinicio 6246 es_ES
dc.description.upvformatpfin 6256 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 258 es_ES
dc.relation.senia 222459


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