Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium

[EN] In this work, the electrocatalytic performance of Ti/SnO2-Sb(13-x)-Pt-Ru(x) anodes (x = 0.0, 3.25 and 9.75 at.%) towards phenolate elimination has been analyzed and compared to those of conventional Ti/RuO2 and Ti/Co3O4 anodes, to evaluate their application for decontamination of concentrated a...

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Autores: Berenguer Betrián, Raúl, Sieben, J. M., Morallón, Emilia, Quijada, César|||0000-0002-9965-9651
Tipo de documento: artigo
Data de publicação:2016
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositório:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglês
OAI Identifier:oai:riunet.upv.es:10251/80805
Acesso em linha:https://riunet.upv.es/handle/10251/80805
Access Level:Acceso aberto
Palavra-chave:Electrocatalysis
Electrochemical treatment
Phenol removal
Tin dioxide electrodes
QUIMICA FISICA
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spelling Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline mediumBerenguer Betrián, RaúlSieben, J. M.Morallón, EmiliaQuijada, César|||0000-0002-9965-9651ElectrocatalysisElectrochemical treatmentPhenol removalTin dioxide electrodesQUIMICA FISICA[EN] In this work, the electrocatalytic performance of Ti/SnO2-Sb(13-x)-Pt-Ru(x) anodes (x = 0.0, 3.25 and 9.75 at.%) towards phenolate elimination has been analyzed and compared to those of conventional Ti/RuO2 and Ti/Co3O4 anodes, to evaluate their application for decontamination of concentrated alkaline phenolic wastewaters. The effects of the applied current density and the nature of the anode on the activity, kinetics and current efficiency for phenolate elimination, COD removal and benzoquinone by-product formation/degradation have been thoroughly examined. The Ti/SnO2-Sb-Pt anode exhibits the best electroactivity, fastest kinetics and highest current efficiency among the studied anodes, but poor electrochemical stability. The introduction of small amounts of Ru (3.25–9.75 at.%) brings about a slight loss of the electrocatalytic performance, but it causes a remarkable increase in the stability of the electrode. In terms of energy consumption and stability, the Ti/SnO2-Sb(9.75)-Pt-Ru(3.25) electrode seems to be the most promising anode material for the electrochemical treatment of alkaline phenolic wastewaters. The increase in current density generally leads to significantly faster phenolate, benzoquinone and COD degradations, but with lower efficiency because of an increasing selectivity to water oxidation. A correction of the ideal kinetic model has been proposed to predict the oxidation of organics on non-active metal oxide anodes. ©2016 Elsevier B.V. All rights reserved.Financial support from the Spanish Ministerio de Economia y Competitividad and FEDER funds (MAT2013-42007-P, IJCI-2014-20012) and from the Generalitat Valenciana (PROMETEO2013/038) is gratefully acknowledged.ElsevierDepartamento de Ingeniería Textil y PapeleraEscuela Politécnica Superior de AlcoyMinisterio de Economía y CompetitividadGeneralitat ValencianaRepositorio Institucional de la Universitat Politècnica de València Riunet20162016-12-15journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/80805reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 MAT2013-42007-P FUNCIONALIZACION ELECTROQUIMICA DE MATERIALES AVANZADOS PARA APLICACIONES EN ENERGIA Y BIOSENSORES ELECTROQUIMICOSGeneralitat Valenciana https://doi.org/10.13039/501100003359 PROMETEO%2F2013%2F038 Desarrollo de nuevos electrodos y procesos químicos sostenibles para la detección de analitos obtenidos por microextracción líquido-líquidoMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 IJCI-2014-20012 IJCI-2014-20012open accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/808052026-06-13T07:49:27Z
dc.title.none.fl_str_mv Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium
title Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium
spellingShingle Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium
Berenguer Betrián, Raúl
Electrocatalysis
Electrochemical treatment
Phenol removal
Tin dioxide electrodes
QUIMICA FISICA
title_short Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium
title_full Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium
title_fullStr Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium
title_full_unstemmed Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium
title_sort Electrocatalytic degradation of phenol on Pt- and Ru-doped Ti-SnO2-Sb anodes in an alkaline medium
dc.creator.none.fl_str_mv Berenguer Betrián, Raúl
Sieben, J. M.
Morallón, Emilia
Quijada, César|||0000-0002-9965-9651
author Berenguer Betrián, Raúl
author_facet Berenguer Betrián, Raúl
Sieben, J. M.
Morallón, Emilia
Quijada, César|||0000-0002-9965-9651
author_role author
author2 Sieben, J. M.
Morallón, Emilia
Quijada, César|||0000-0002-9965-9651
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Textil y Papelera
Escuela Politécnica Superior de Alcoy
Ministerio de Economía y Competitividad
Generalitat Valenciana
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Electrocatalysis
Electrochemical treatment
Phenol removal
Tin dioxide electrodes
QUIMICA FISICA
topic Electrocatalysis
Electrochemical treatment
Phenol removal
Tin dioxide electrodes
QUIMICA FISICA
description [EN] In this work, the electrocatalytic performance of Ti/SnO2-Sb(13-x)-Pt-Ru(x) anodes (x = 0.0, 3.25 and 9.75 at.%) towards phenolate elimination has been analyzed and compared to those of conventional Ti/RuO2 and Ti/Co3O4 anodes, to evaluate their application for decontamination of concentrated alkaline phenolic wastewaters. The effects of the applied current density and the nature of the anode on the activity, kinetics and current efficiency for phenolate elimination, COD removal and benzoquinone by-product formation/degradation have been thoroughly examined. The Ti/SnO2-Sb-Pt anode exhibits the best electroactivity, fastest kinetics and highest current efficiency among the studied anodes, but poor electrochemical stability. The introduction of small amounts of Ru (3.25–9.75 at.%) brings about a slight loss of the electrocatalytic performance, but it causes a remarkable increase in the stability of the electrode. In terms of energy consumption and stability, the Ti/SnO2-Sb(9.75)-Pt-Ru(3.25) electrode seems to be the most promising anode material for the electrochemical treatment of alkaline phenolic wastewaters. The increase in current density generally leads to significantly faster phenolate, benzoquinone and COD degradations, but with lower efficiency because of an increasing selectivity to water oxidation. A correction of the ideal kinetic model has been proposed to predict the oxidation of organics on non-active metal oxide anodes. ©2016 Elsevier B.V. All rights reserved.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-12-15
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/80805
url https://riunet.upv.es/handle/10251/80805
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 MAT2013-42007-P FUNCIONALIZACION ELECTROQUIMICA DE MATERIALES AVANZADOS PARA APLICACIONES EN ENERGIA Y BIOSENSORES ELECTROQUIMICOS
Generalitat Valenciana https://doi.org/10.13039/501100003359 PROMETEO%2F2013%2F038 Desarrollo de nuevos electrodos y procesos químicos sostenibles para la detección de analitos obtenidos por microextracción líquido-líquido
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 IJCI-2014-20012 IJCI-2014-20012
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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