Platinum particles electrodeposition on carbon substrates

Autores
Duarte, M.M.E.; Pilla, A.S.; Sieben, Juan Manuel; Mayer, Carlos Enrique
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Electrochemical deposition of platinum on different carbon substrates was applied to obtain supported submicroparticles to use as electrocatalysts for the oxidation of methanol in acid media. Particles with well-defined morphology and size can be obtained by this technique controlling electrodeposition potential and time. Glassy carbon and graphite fibers were used as substrates. Platinum particles were deposited from chloroplatinic acid solutions. Conventional electrochemical techniques were used to characterize supported platinum surface status. Particle size and catalyst mass were influenced by deposition potential and time. The application of double potential steps favored a more uniform dispersion of the particles and a general reduction in particle size. From specific surface area measurements particle diameters between 10 and 20 nm were estimated when glassy carbon was used as support. Differences in size and morphology were observed when Pt was deposited on graphite fibers. Notwithstanding using similar conditions, the particles on fibers were bigger and tending to coalesce. This behavior was ascribed to the highly hydrophobic surface of the fibers. The Pt deposits were tested as catalyst for electrochemical methanol oxidation. The Pt/GC electrocatalytic activity expressed as current per Pt mass was found to depend on the metal particle size, showing a decreasing activity when the catalyst diameter increase.
Fil: Duarte, M.M.E.. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
Fil: Pilla, A.S.. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
Fil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
Fil: Mayer, Carlos Enrique. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
Materia
ELECTRODEPOSITION
GLASSY CARBON
GRAPHITE FIBER
METHANOL
PLATINUM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/97811
Acceder
id CONICETDig_0908d7658da3d77b735608653ed2891e
oai_identifier_str oai:ri.conicet.gov.ar:11336/97811
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Platinum particles electrodeposition on carbon substratesDuarte, M.M.E.Pilla, A.S.Sieben, Juan ManuelMayer, Carlos EnriqueELECTRODEPOSITIONGLASSY CARBONGRAPHITE FIBERMETHANOLPLATINUMhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Electrochemical deposition of platinum on different carbon substrates was applied to obtain supported submicroparticles to use as electrocatalysts for the oxidation of methanol in acid media. Particles with well-defined morphology and size can be obtained by this technique controlling electrodeposition potential and time. Glassy carbon and graphite fibers were used as substrates. Platinum particles were deposited from chloroplatinic acid solutions. Conventional electrochemical techniques were used to characterize supported platinum surface status. Particle size and catalyst mass were influenced by deposition potential and time. The application of double potential steps favored a more uniform dispersion of the particles and a general reduction in particle size. From specific surface area measurements particle diameters between 10 and 20 nm were estimated when glassy carbon was used as support. Differences in size and morphology were observed when Pt was deposited on graphite fibers. Notwithstanding using similar conditions, the particles on fibers were bigger and tending to coalesce. This behavior was ascribed to the highly hydrophobic surface of the fibers. The Pt deposits were tested as catalyst for electrochemical methanol oxidation. The Pt/GC electrocatalytic activity expressed as current per Pt mass was found to depend on the metal particle size, showing a decreasing activity when the catalyst diameter increase.Fil: Duarte, M.M.E.. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; ArgentinaFil: Pilla, A.S.. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; ArgentinaFil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; ArgentinaFil: Mayer, Carlos Enrique. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; ArgentinaElsevier Science Inc2006-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/97811Duarte, M.M.E.; Pilla, A.S.; Sieben, Juan Manuel; Mayer, Carlos Enrique; Platinum particles electrodeposition on carbon substrates; Elsevier Science Inc; Electrochemistry Communications; 8; 1; 1-2006; 159-1641388-2481CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1388248105003516info:eu-repo/semantics/altIdentifier/doi/10.1016/j.elecom.2005.11.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:09:55Zoai:ri.conicet.gov.ar:11336/97811instacron: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:34982025-09-29 10:09:55.442CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Platinum particles electrodeposition on carbon substrates
title Platinum particles electrodeposition on carbon substrates
spellingShingle Platinum particles electrodeposition on carbon substrates
Duarte, M.M.E.
ELECTRODEPOSITION
GLASSY CARBON
GRAPHITE FIBER
METHANOL
PLATINUM
title_short Platinum particles electrodeposition on carbon substrates
title_full Platinum particles electrodeposition on carbon substrates
title_fullStr Platinum particles electrodeposition on carbon substrates
title_full_unstemmed Platinum particles electrodeposition on carbon substrates
title_sort Platinum particles electrodeposition on carbon substrates
dc.creator.none.fl_str_mv Duarte, M.M.E.
Pilla, A.S.
Sieben, Juan Manuel
Mayer, Carlos Enrique
author Duarte, M.M.E.
author_facet Duarte, M.M.E.
Pilla, A.S.
Sieben, Juan Manuel
Mayer, Carlos Enrique
author_role author
author2 Pilla, A.S.
Sieben, Juan Manuel
Mayer, Carlos Enrique
author2_role author
author
author
dc.subject.none.fl_str_mv ELECTRODEPOSITION
GLASSY CARBON
GRAPHITE FIBER
METHANOL
PLATINUM
topic ELECTRODEPOSITION
GLASSY CARBON
GRAPHITE FIBER
METHANOL
PLATINUM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Electrochemical deposition of platinum on different carbon substrates was applied to obtain supported submicroparticles to use as electrocatalysts for the oxidation of methanol in acid media. Particles with well-defined morphology and size can be obtained by this technique controlling electrodeposition potential and time. Glassy carbon and graphite fibers were used as substrates. Platinum particles were deposited from chloroplatinic acid solutions. Conventional electrochemical techniques were used to characterize supported platinum surface status. Particle size and catalyst mass were influenced by deposition potential and time. The application of double potential steps favored a more uniform dispersion of the particles and a general reduction in particle size. From specific surface area measurements particle diameters between 10 and 20 nm were estimated when glassy carbon was used as support. Differences in size and morphology were observed when Pt was deposited on graphite fibers. Notwithstanding using similar conditions, the particles on fibers were bigger and tending to coalesce. This behavior was ascribed to the highly hydrophobic surface of the fibers. The Pt deposits were tested as catalyst for electrochemical methanol oxidation. The Pt/GC electrocatalytic activity expressed as current per Pt mass was found to depend on the metal particle size, showing a decreasing activity when the catalyst diameter increase.
Fil: Duarte, M.M.E.. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
Fil: Pilla, A.S.. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
Fil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
Fil: Mayer, Carlos Enrique. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
description Electrochemical deposition of platinum on different carbon substrates was applied to obtain supported submicroparticles to use as electrocatalysts for the oxidation of methanol in acid media. Particles with well-defined morphology and size can be obtained by this technique controlling electrodeposition potential and time. Glassy carbon and graphite fibers were used as substrates. Platinum particles were deposited from chloroplatinic acid solutions. Conventional electrochemical techniques were used to characterize supported platinum surface status. Particle size and catalyst mass were influenced by deposition potential and time. The application of double potential steps favored a more uniform dispersion of the particles and a general reduction in particle size. From specific surface area measurements particle diameters between 10 and 20 nm were estimated when glassy carbon was used as support. Differences in size and morphology were observed when Pt was deposited on graphite fibers. Notwithstanding using similar conditions, the particles on fibers were bigger and tending to coalesce. This behavior was ascribed to the highly hydrophobic surface of the fibers. The Pt deposits were tested as catalyst for electrochemical methanol oxidation. The Pt/GC electrocatalytic activity expressed as current per Pt mass was found to depend on the metal particle size, showing a decreasing activity when the catalyst diameter increase.
publishDate 2006
dc.date.none.fl_str_mv 2006-01
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/11336/97811
Duarte, M.M.E.; Pilla, A.S.; Sieben, Juan Manuel; Mayer, Carlos Enrique; Platinum particles electrodeposition on carbon substrates; Elsevier Science Inc; Electrochemistry Communications; 8; 1; 1-2006; 159-164
1388-2481
CONICET Digital
CONICET
url http://hdl.handle.net/11336/97811
identifier_str_mv Duarte, M.M.E.; Pilla, A.S.; Sieben, Juan Manuel; Mayer, Carlos Enrique; Platinum particles electrodeposition on carbon substrates; Elsevier Science Inc; Electrochemistry Communications; 8; 1; 1-2006; 159-164
1388-2481
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1388248105003516
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.elecom.2005.11.003
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Inc
publisher.none.fl_str_mv Elsevier Science Inc
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
_version_ 1844613982697029632
score 13.070432

Publicaciones similares