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Electrocatalytic oxidation of ascorbic acid on mesostructured SiO2-conducting polymer composites

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Electrocatalytic oxidation of ascorbic acid on mesostructured SiO2-conducting polymer composites

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dc.contributor.author Rivero, Omar es_ES
dc.contributor.author Huerta, Francisco es_ES
dc.contributor.author Montilla, Francisco es_ES
dc.contributor.author Sanchis, C. es_ES
dc.contributor.author Morallón, Emilia es_ES
dc.date.accessioned 2015-11-20T10:06:38Z
dc.date.available 2015-11-20T10:06:38Z
dc.date.issued 2015-08
dc.identifier.issn 0014-3057
dc.identifier.uri http://hdl.handle.net/10251/57820
dc.description.abstract The conducting self-doping copolymer poly(aniline-co-ABA) preserves its redox activity at pH values as high as 7. This observation was the starting point to synthesize an organic inorganic hybrid composite able to electrochemically oxidize ascorbic acid molecules at that pH. The inorganic part of the catalytic element was an ordered mesoporous electrodeposit of SiO2, which has been used as the template for the electrochemical insertion of the self-doping copolymer. The oxidation of ascorbate ions at a fixed potential on this composite was studied by means of the kinetic model proposed by Bartlett and Wallace (2001). It was observed that the effective kinetic constant K-ME increased significantly but, simultaneously, k'(ME) remained almost constant when the composite was employed as the electrocatalytic substrate. These results were interpreted in the light of two combinations of kinetic constants, which strongly suggested that the increase in K-ME should be ascribed to the improvement in electronic conductivity of the copolymer induced by the highly ordered silica template. (C) 2015 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship Financial support from the Spanish Ministerio de Economia y Competitividad and FEDER funds (MAT2013-42007-P), from the Generalitat Valenciana (PROMETE02013/038) and from the Fundacion Ramon Areces is gratefully acknowledged. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Spanish Ministerio de Economia y Competitividad and FEDER funds [MAT2013-42007-P] es_ES
dc.relation Generalitat Valenciana [PROMETEO/2013/038] es_ES
dc.relation Fundación Ramón Areces es_ES
dc.relation.ispartof European Polymer Journal es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Hibrid materials es_ES
dc.subject Mesostructured SiO2 es_ES
dc.subject Copolymerization es_ES
dc.subject Copolymer poly(aniline-co-ABA) es_ES
dc.subject Ascorbic acid es_ES
dc.subject.classification QUIMICA FISICA es_ES
dc.title Electrocatalytic oxidation of ascorbic acid on mesostructured SiO2-conducting polymer composites es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.eurpolymj.2015.06.004
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 Rivero, O.; Huerta, F.; Montilla, F.; Sanchis, C.; Morallón, E. (2015). Electrocatalytic oxidation of ascorbic acid on mesostructured SiO2-conducting polymer composites. European Polymer Journal. 69:201-207. doi:10.1016/j.eurpolymj.2015.06.004 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.eurpolymj.2015.06.004 es_ES
dc.description.upvformatpinicio 201 es_ES
dc.description.upvformatpfin 207 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 69 es_ES
dc.relation.senia 291473 es_ES
dc.identifier.eissn 1873-1945


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