Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation

6 figures, 5 tables.-- © 2011. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/

Detalles Bibliográficos
Autores: Alegre Gresa, Cinthia, Gálvez Parruca, María Elena, Baquedano, Estela, Pastor Tejera, Elena, Moliner Álvarez, Rafael, Lázaro Elorri, María Jesús
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/346282
Acceso en línea:http://hdl.handle.net/10261/346282
Access Level:acceso abierto
Palabra clave:Carbon xerogel
Functionalization
Surface oxygen groups
Pt-catalysts
Methanol electro-oxidation
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oai_identifier_str oai:digital.csic.es:10261/346282
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network_name_str España
repository_id_str
dc.title.none.fl_str_mv Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation
title Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation
spellingShingle Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation
Alegre Gresa, Cinthia
Carbon xerogel
Functionalization
Surface oxygen groups
Pt-catalysts
Methanol electro-oxidation
title_short Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation
title_full Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation
title_fullStr Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation
title_full_unstemmed Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation
title_sort Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidation
dc.creator.none.fl_str_mv Alegre Gresa, Cinthia
Gálvez Parruca, María Elena
Baquedano, Estela
Pastor Tejera, Elena
Moliner Álvarez, Rafael
Lázaro Elorri, María Jesús
author Alegre Gresa, Cinthia
author_facet Alegre Gresa, Cinthia
Gálvez Parruca, María Elena
Baquedano, Estela
Pastor Tejera, Elena
Moliner Álvarez, Rafael
Lázaro Elorri, María Jesús
author_role author
author2 Gálvez Parruca, María Elena
Baquedano, Estela
Pastor Tejera, Elena
Moliner Álvarez, Rafael
Lázaro Elorri, María Jesús
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Ministerio de Ciencia e Innovación (España)
Alegre Gresa, Cinthia [0000-0003-1221-6311]
Gálvez Parruca, María Elena [0000-0002-2920-191X]
Baquedano, Estela [0000-0002-0257-7132]
Pastor Tejera, Elena [0000-0001-6732-5828]
Moliner Álvarez, Rafael [0000-0003-0815-6133]
Lázaro Elorri, María Jesús [0000-0002-4769-2564]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Carbon xerogel
Functionalization
Surface oxygen groups
Pt-catalysts
Methanol electro-oxidation
topic Carbon xerogel
Functionalization
Surface oxygen groups
Pt-catalysts
Methanol electro-oxidation
description 6 figures, 5 tables.-- © 2011. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
publishDate 2011
dc.date.none.fl_str_mv 2011
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/346282
url http://hdl.handle.net/10261/346282
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICINN//MAT2008-06631-C03-01
info:eu-repo/grantAgreement/MICINN//MAT2008-06631-C03-02
http://dx.doi.org/10.1016/j.ijhydene.2011.11.022
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
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spelling Influence of support’s oxygen functionalization on the activity of Pt/carbon xerogels catalysts for methanol electro-oxidationAlegre Gresa, CinthiaGálvez Parruca, María ElenaBaquedano, EstelaPastor Tejera, ElenaMoliner Álvarez, RafaelLázaro Elorri, María JesúsCarbon xerogelFunctionalizationSurface oxygen groupsPt-catalystsMethanol electro-oxidation6 figures, 5 tables.-- © 2011. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/Highly mesoporous carbon xerogels (CXs) were synthesized using two different resorcinol to catalyst, R/C, molar ratios and functionalized with different oxidation treatments. The synthesized carbon materials were used as supports for Pt particles, deposited by impregnation and reduction in formic acid. Both carbon supports and the catalysts prepared were characterized by means of N2 physisorption, scanning and transmission electron microscopy, temperature programmed desorption and X-ray diffraction. The electrochemical activity of the catalysts towards the oxidation of carbon monoxide and methanol was assayed by means of cyclic voltammetry and chronoamperometry. Textural characterization of the materials prepared evidenced more developed and mesopore-enriched porous structure for the carbon xerogel prepared using the highest R/C molar ratio. Enhanced textural properties of this material led to the preparation of highly active Pt-catalysts, which showed increased tolerance to CO and higher activity in methanol electro-oxidation, in comparison to Pt-E-TEK and the catalysts prepared in an analogous way using Vulcan XC-72R carbon black as support. Functionalization treatments resulted in enhanced dispersion, lower Pt crystal size and improved catalytic performance in the case of the catalysts prepared using the carbon xerogel possessing a less developed porous structure. Pt agglomeration was found to strongly determine the activity of the catalysts prepared. At high potentials, i.e. 1 V vs. RHE, the catalyst prepared using the carbon xerogel submitted to the most stringent oxidation treatment showed the highest specific peak activity towards methanol electro-oxidation, probably due to the positive influence of the presence of oxygen surface groups in Pt-carbon interaction, in spite of the higher agglomeration extent confirmed by TEM. On the other hand, at 0.60 V vs. RHE, highest activity towards methanol electro-oxidation was determined for the catalysts prepared using the non-functionalized carbon xerogel which can be explained in terms of enhanced reactant/product diffusion together with intrinsic higher catalytic activity due to lower Pt crystal size. In any case, the activity of this catalyst prepared using a carbon xerogel as support was found to be more than 2 times higher than the one determined for Pt/E-TEK, confirming the considerable improvement of the electrocatalytic system by means of optimization of the carbon support employed.Authors want to acknowledge FEDER and the Spanish MICINN for financial support under the projects MAT2008-06631-C03-01 and MAT2008-06631-C03-02. M.E. Gálvez is indebted to the Spanish Ministry of Science and Innovation (MICINN) for her Juan de la Cierva post-doctoral fellowship.Peer reviewedElsevierEuropean CommissionMinisterio de Ciencia e Innovación (España)Alegre Gresa, Cinthia [0000-0003-1221-6311]Gálvez Parruca, María Elena [0000-0002-2920-191X]Baquedano, Estela [0000-0002-0257-7132]Pastor Tejera, Elena [0000-0001-6732-5828]Moliner Álvarez, Rafael [0000-0003-0815-6133]Lázaro Elorri, María Jesús [0000-0002-4769-2564]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/346282reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//MAT2008-06631-C03-01info:eu-repo/grantAgreement/MICINN//MAT2008-06631-C03-02http://dx.doi.org/10.1016/j.ijhydene.2011.11.022Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3462822026-05-22T06:33:51Z
score 15.812429

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