Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium

In this work, an electrochemical methodology consisting of electrodeposition in ionic liquid-in water (IL/W) microemulsions has been revealed as an excellent pathway to prepare highly mesoporous nanorods with pore sizes of a few nanometers, with a significant growth rate. The nanochannels of a polyc...

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Autores: Serrà i Ramos, Albert, Gómez, Elvira, Montiel Argaiz, Manuel, Vallés Giménez, Elisa
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/139660
Acceso en línea:https://hdl.handle.net/2445/139660
Access Level:acceso abierto
Palabra clave:Electrocatàlisi
Nanotecnologia
Alcohol
Electrocatalysis
Nanotechnology
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spelling Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline mediumSerrà i Ramos, AlbertGómez, ElviraMontiel Argaiz, ManuelVallés Giménez, ElisaElectrocatàlisiNanotecnologiaAlcoholElectrocatalysisNanotechnologyAlcoholIn this work, an electrochemical methodology consisting of electrodeposition in ionic liquid-in water (IL/W) microemulsions has been revealed as an excellent pathway to prepare highly mesoporous nanorods with pore sizes of a few nanometers, with a significant growth rate. The nanochannels of a polycarbonate membrane (hard template) define the diameter of the nanorods, the deposited charge controls its length and the mesoporous structure replicates the structure of the microemulsion (soft template). This procedure has been used to prepare mesoporous nanorods of pure metal (Pt) or of alloy (CoPt3) with very high electrochemically active surface area (228 and 235 m2 g-1, respectively), as a consequence of the accessible three-dimensional interconnected network formed by the mesopores. When the synthesised mesoporous nanorods were tested as catalysts for ethanol electrooxidation in alkaline medium, excellent catalytic performance was found, with significant improvements over the performance of compact nanorods or commercial PtRu nanoparticles. The oxidation current / mass ratio of the mesoporous nanorod catalyst is significantly higher and, moreover, the onset potential of the ethanol oxidation is clearly advanced. Mesoporous CoPt3 nanorods show similar performance with pure platinum mesoporous nanorods and good stability in the alkaline medium, which makes them very good candidates as catalysts of the anodic reaction in direct ethanol fuel cells, with greater economy with respect to pure Pt catalysts.Royal Society of Chemistry2019201920162019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion9 p.application/pdfhttps://hdl.handle.net/2445/139660Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1039/C6RA06407HRSC Advances, 2016, vol. 6, p. 47931-47939https://doi.org/10.1039/C6RA06407H(c) Serrà, Albert et al., 2016info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1396602026-05-29T05:05:01Z
dc.title.none.fl_str_mv Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium
title Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium
spellingShingle Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium
Serrà i Ramos, Albert
Electrocatàlisi
Nanotecnologia
Alcohol
Electrocatalysis
Nanotechnology
Alcohol
title_short Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium
title_full Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium
title_fullStr Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium
title_full_unstemmed Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium
title_sort Effective new method for synthesizing Pt and CoPt3 mesoporous nanorods. New catalysts for ethanol electro-oxidation in alkaline medium
dc.creator.none.fl_str_mv Serrà i Ramos, Albert
Gómez, Elvira
Montiel Argaiz, Manuel
Vallés Giménez, Elisa
author Serrà i Ramos, Albert
author_facet Serrà i Ramos, Albert
Gómez, Elvira
Montiel Argaiz, Manuel
Vallés Giménez, Elisa
author_role author
author2 Gómez, Elvira
Montiel Argaiz, Manuel
Vallés Giménez, Elisa
author2_role author
author
author
dc.subject.none.fl_str_mv Electrocatàlisi
Nanotecnologia
Alcohol
Electrocatalysis
Nanotechnology
Alcohol
topic Electrocatàlisi
Nanotecnologia
Alcohol
Electrocatalysis
Nanotechnology
Alcohol
description In this work, an electrochemical methodology consisting of electrodeposition in ionic liquid-in water (IL/W) microemulsions has been revealed as an excellent pathway to prepare highly mesoporous nanorods with pore sizes of a few nanometers, with a significant growth rate. The nanochannels of a polycarbonate membrane (hard template) define the diameter of the nanorods, the deposited charge controls its length and the mesoporous structure replicates the structure of the microemulsion (soft template). This procedure has been used to prepare mesoporous nanorods of pure metal (Pt) or of alloy (CoPt3) with very high electrochemically active surface area (228 and 235 m2 g-1, respectively), as a consequence of the accessible three-dimensional interconnected network formed by the mesopores. When the synthesised mesoporous nanorods were tested as catalysts for ethanol electrooxidation in alkaline medium, excellent catalytic performance was found, with significant improvements over the performance of compact nanorods or commercial PtRu nanoparticles. The oxidation current / mass ratio of the mesoporous nanorod catalyst is significantly higher and, moreover, the onset potential of the ethanol oxidation is clearly advanced. Mesoporous CoPt3 nanorods show similar performance with pure platinum mesoporous nanorods and good stability in the alkaline medium, which makes them very good candidates as catalysts of the anodic reaction in direct ethanol fuel cells, with greater economy with respect to pure Pt catalysts.
publishDate 2016
dc.date.none.fl_str_mv 2016
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/139660
url https://hdl.handle.net/2445/139660
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1039/C6RA06407H
RSC Advances, 2016, vol. 6, p. 47931-47939
https://doi.org/10.1039/C6RA06407H
dc.rights.none.fl_str_mv (c) Serrà, Albert et al., 2016
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Serrà, Albert et al., 2016
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 9 p.
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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