Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media

Autores
Fernandez, Jose Luis; Imaduwage, Kasun P.; Zoski, Cynthia G.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Carbon supported palladium (C/Pd) and gold (C/Au) catalysts were synthesized through a synthesis route involving oxide precipitation and partial reduction, and their performance for the oxygen reduction reaction (ORR) in acidic media was studied. Scanning electrochemical microscopy (SECM) ORR screening and tip-generation/substrate collection performed on glassy carbon supported metal spots showed a strong effect of the reactant ratio (precursor salt/precipitant/reducing agent) on the performance of the resulting catalysts for oxygen reduction and hydrogen peroxide production. These SECM results were further confirmed using a rotating ring-disk electrode with Nafion-embedded Vulcan carbon supported dispersed metal nanoparticles, and characterization with XRD and TGA. A significant enhancement in the overall activity for the ORR was observed on both C/Pd and C/Au catalysts under conditions involving metal oxide reduction, compared to those catalysts that were synthesized by direct metal salt reduction. For C/Pd, this enhanced overall activity with concomitant low peroxide yield is due to the different ways in which the metal and unreduced metal oxide in the catalysts interact with the hydrogen peroxide pathway. For C/Au, a highly dispersed metal with high electroactive area is obtained that shifts the potentials for the reduction of oxygen to hydrogen peroxide to near-reversible conditions.
Fil: Fernandez, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. New Mexico State University; Estados Unidos
Fil: Imaduwage, Kasun P.. New Mexico State University; Estados Unidos
Fil: Zoski, Cynthia G.. New Mexico State University; Estados Unidos
Materia
Electrocatalyst Synergetic Effects
Metal Oxide Synthesis Route
Oxygen Reduction
Scanning Electrochemical Microscopy (Secm)
Secm Activity Screening
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/78244
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic MediaFernandez, Jose LuisImaduwage, Kasun P.Zoski, Cynthia G.Electrocatalyst Synergetic EffectsMetal Oxide Synthesis RouteOxygen ReductionScanning Electrochemical Microscopy (Secm)Secm Activity Screeninghttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Carbon supported palladium (C/Pd) and gold (C/Au) catalysts were synthesized through a synthesis route involving oxide precipitation and partial reduction, and their performance for the oxygen reduction reaction (ORR) in acidic media was studied. Scanning electrochemical microscopy (SECM) ORR screening and tip-generation/substrate collection performed on glassy carbon supported metal spots showed a strong effect of the reactant ratio (precursor salt/precipitant/reducing agent) on the performance of the resulting catalysts for oxygen reduction and hydrogen peroxide production. These SECM results were further confirmed using a rotating ring-disk electrode with Nafion-embedded Vulcan carbon supported dispersed metal nanoparticles, and characterization with XRD and TGA. A significant enhancement in the overall activity for the ORR was observed on both C/Pd and C/Au catalysts under conditions involving metal oxide reduction, compared to those catalysts that were synthesized by direct metal salt reduction. For C/Pd, this enhanced overall activity with concomitant low peroxide yield is due to the different ways in which the metal and unreduced metal oxide in the catalysts interact with the hydrogen peroxide pathway. For C/Au, a highly dispersed metal with high electroactive area is obtained that shifts the potentials for the reduction of oxygen to hydrogen peroxide to near-reversible conditions.Fil: Fernandez, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. New Mexico State University; Estados UnidosFil: Imaduwage, Kasun P.. New Mexico State University; Estados UnidosFil: Zoski, Cynthia G.. New Mexico State University; Estados UnidosPergamon-Elsevier Science Ltd2015-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78244Fernandez, Jose Luis; Imaduwage, Kasun P.; Zoski, Cynthia G.; Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 180; 10-2015; 460-4700013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2015.08.027info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468615302772info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:12:00Zoai:ri.conicet.gov.ar:11336/78244instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:12:00.705CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media
title Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media
spellingShingle Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media
Fernandez, Jose Luis
Electrocatalyst Synergetic Effects
Metal Oxide Synthesis Route
Oxygen Reduction
Scanning Electrochemical Microscopy (Secm)
Secm Activity Screening
title_short Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media
title_full Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media
title_fullStr Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media
title_full_unstemmed Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media
title_sort Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media
dc.creator.none.fl_str_mv Fernandez, Jose Luis
Imaduwage, Kasun P.
Zoski, Cynthia G.
author Fernandez, Jose Luis
author_facet Fernandez, Jose Luis
Imaduwage, Kasun P.
Zoski, Cynthia G.
author_role author
author2 Imaduwage, Kasun P.
Zoski, Cynthia G.
author2_role author
author
dc.subject.none.fl_str_mv Electrocatalyst Synergetic Effects
Metal Oxide Synthesis Route
Oxygen Reduction
Scanning Electrochemical Microscopy (Secm)
Secm Activity Screening
topic Electrocatalyst Synergetic Effects
Metal Oxide Synthesis Route
Oxygen Reduction
Scanning Electrochemical Microscopy (Secm)
Secm Activity Screening
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Carbon supported palladium (C/Pd) and gold (C/Au) catalysts were synthesized through a synthesis route involving oxide precipitation and partial reduction, and their performance for the oxygen reduction reaction (ORR) in acidic media was studied. Scanning electrochemical microscopy (SECM) ORR screening and tip-generation/substrate collection performed on glassy carbon supported metal spots showed a strong effect of the reactant ratio (precursor salt/precipitant/reducing agent) on the performance of the resulting catalysts for oxygen reduction and hydrogen peroxide production. These SECM results were further confirmed using a rotating ring-disk electrode with Nafion-embedded Vulcan carbon supported dispersed metal nanoparticles, and characterization with XRD and TGA. A significant enhancement in the overall activity for the ORR was observed on both C/Pd and C/Au catalysts under conditions involving metal oxide reduction, compared to those catalysts that were synthesized by direct metal salt reduction. For C/Pd, this enhanced overall activity with concomitant low peroxide yield is due to the different ways in which the metal and unreduced metal oxide in the catalysts interact with the hydrogen peroxide pathway. For C/Au, a highly dispersed metal with high electroactive area is obtained that shifts the potentials for the reduction of oxygen to hydrogen peroxide to near-reversible conditions.
Fil: Fernandez, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. New Mexico State University; Estados Unidos
Fil: Imaduwage, Kasun P.. New Mexico State University; Estados Unidos
Fil: Zoski, Cynthia G.. New Mexico State University; Estados Unidos
description Carbon supported palladium (C/Pd) and gold (C/Au) catalysts were synthesized through a synthesis route involving oxide precipitation and partial reduction, and their performance for the oxygen reduction reaction (ORR) in acidic media was studied. Scanning electrochemical microscopy (SECM) ORR screening and tip-generation/substrate collection performed on glassy carbon supported metal spots showed a strong effect of the reactant ratio (precursor salt/precipitant/reducing agent) on the performance of the resulting catalysts for oxygen reduction and hydrogen peroxide production. These SECM results were further confirmed using a rotating ring-disk electrode with Nafion-embedded Vulcan carbon supported dispersed metal nanoparticles, and characterization with XRD and TGA. A significant enhancement in the overall activity for the ORR was observed on both C/Pd and C/Au catalysts under conditions involving metal oxide reduction, compared to those catalysts that were synthesized by direct metal salt reduction. For C/Pd, this enhanced overall activity with concomitant low peroxide yield is due to the different ways in which the metal and unreduced metal oxide in the catalysts interact with the hydrogen peroxide pathway. For C/Au, a highly dispersed metal with high electroactive area is obtained that shifts the potentials for the reduction of oxygen to hydrogen peroxide to near-reversible conditions.
publishDate 2015
dc.date.none.fl_str_mv 2015-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/78244
Fernandez, Jose Luis; Imaduwage, Kasun P.; Zoski, Cynthia G.; Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 180; 10-2015; 460-470
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78244
identifier_str_mv Fernandez, Jose Luis; Imaduwage, Kasun P.; Zoski, Cynthia G.; Carbon Supported Noble Metal (Pd and Au) Catalysts Synthesized by an Oxide Route with High Performance for Oxygen Reduction in Acidic Media; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 180; 10-2015; 460-470
0013-4686
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2015.08.027
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468615302772
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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