Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control

Autores
Montero, María de Los Angeles; Gennero, Maria Rosa; Chialvo, Abel Cesar
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A method for the determination of the intrinsic electrocatalytic activity of metal nanoparticles for reactions under mixed diffusion-activation control is proposed. The working electrode consists of a nanoparticle array supported on a rotating disc of an inert conducting substrate. This electrode configuration reduces significantly the contribution of the reactant diffusion to the experimental current-potential curves and consequently, the kinetic parameters of the reaction can be evaluated more accurately. A model was developed for the diffusion process in the proposed configuration, which includes a parameter related to the degree of dispersion of the nanoparticles on the electrode surface (active area factor). It allows one to evaluate changes in the current-potential plot under conditions of constant particle diameter, which is essential for the appropriate analysis of the electrocatalytic activity of nanoparticles. On this basis the dependences of the current and current density for the hydrogen oxidation reaction on overpotential, rotation rate, particle size and active area factor were derived. The validity of these expressions was verified through the analysis of experimental results.
Fil: Montero, María de Los Angeles. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina
Fil: Gennero, Maria Rosa. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina
Fil: Chialvo, Abel Cesar. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina
Materia
ELECTROCATALYTIC ACTIVITY
HYDROGEN OXIDATION REACTION
NANOPARTICLES
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:11336/97711
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/97711
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed ControlMontero, María de Los AngelesGennero, Maria RosaChialvo, Abel CesarELECTROCATALYTIC ACTIVITYHYDROGEN OXIDATION REACTIONNANOPARTICLEShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A method for the determination of the intrinsic electrocatalytic activity of metal nanoparticles for reactions under mixed diffusion-activation control is proposed. The working electrode consists of a nanoparticle array supported on a rotating disc of an inert conducting substrate. This electrode configuration reduces significantly the contribution of the reactant diffusion to the experimental current-potential curves and consequently, the kinetic parameters of the reaction can be evaluated more accurately. A model was developed for the diffusion process in the proposed configuration, which includes a parameter related to the degree of dispersion of the nanoparticles on the electrode surface (active area factor). It allows one to evaluate changes in the current-potential plot under conditions of constant particle diameter, which is essential for the appropriate analysis of the electrocatalytic activity of nanoparticles. On this basis the dependences of the current and current density for the hydrogen oxidation reaction on overpotential, rotation rate, particle size and active area factor were derived. The validity of these expressions was verified through the analysis of experimental results.Fil: Montero, María de Los Angeles. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; ArgentinaFil: Gennero, Maria Rosa. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; ArgentinaFil: Chialvo, Abel Cesar. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; ArgentinaPergamon-Elsevier Science Ltd2010-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/97711Montero, María de Los Angeles; Gennero, Maria Rosa; Chialvo, Abel Cesar; Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 56; 2; 12-2010; 756-7610013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2010.09.091info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:54Zoai:ri.conicet.gov.ar:11336/97711instacron: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 09:59:54.446CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control
title Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control
spellingShingle Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control
Montero, María de Los Angeles
ELECTROCATALYTIC ACTIVITY
HYDROGEN OXIDATION REACTION
NANOPARTICLES
title_short Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control
title_full Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control
title_fullStr Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control
title_full_unstemmed Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control
title_sort Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control
dc.creator.none.fl_str_mv Montero, María de Los Angeles
Gennero, Maria Rosa
Chialvo, Abel Cesar
author Montero, María de Los Angeles
author_facet Montero, María de Los Angeles
Gennero, Maria Rosa
Chialvo, Abel Cesar
author_role author
author2 Gennero, Maria Rosa
Chialvo, Abel Cesar
author2_role author
author
dc.subject.none.fl_str_mv ELECTROCATALYTIC ACTIVITY
HYDROGEN OXIDATION REACTION
NANOPARTICLES
topic ELECTROCATALYTIC ACTIVITY
HYDROGEN OXIDATION REACTION
NANOPARTICLES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A method for the determination of the intrinsic electrocatalytic activity of metal nanoparticles for reactions under mixed diffusion-activation control is proposed. The working electrode consists of a nanoparticle array supported on a rotating disc of an inert conducting substrate. This electrode configuration reduces significantly the contribution of the reactant diffusion to the experimental current-potential curves and consequently, the kinetic parameters of the reaction can be evaluated more accurately. A model was developed for the diffusion process in the proposed configuration, which includes a parameter related to the degree of dispersion of the nanoparticles on the electrode surface (active area factor). It allows one to evaluate changes in the current-potential plot under conditions of constant particle diameter, which is essential for the appropriate analysis of the electrocatalytic activity of nanoparticles. On this basis the dependences of the current and current density for the hydrogen oxidation reaction on overpotential, rotation rate, particle size and active area factor were derived. The validity of these expressions was verified through the analysis of experimental results.
Fil: Montero, María de Los Angeles. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina
Fil: Gennero, Maria Rosa. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina
Fil: Chialvo, Abel Cesar. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina
description A method for the determination of the intrinsic electrocatalytic activity of metal nanoparticles for reactions under mixed diffusion-activation control is proposed. The working electrode consists of a nanoparticle array supported on a rotating disc of an inert conducting substrate. This electrode configuration reduces significantly the contribution of the reactant diffusion to the experimental current-potential curves and consequently, the kinetic parameters of the reaction can be evaluated more accurately. A model was developed for the diffusion process in the proposed configuration, which includes a parameter related to the degree of dispersion of the nanoparticles on the electrode surface (active area factor). It allows one to evaluate changes in the current-potential plot under conditions of constant particle diameter, which is essential for the appropriate analysis of the electrocatalytic activity of nanoparticles. On this basis the dependences of the current and current density for the hydrogen oxidation reaction on overpotential, rotation rate, particle size and active area factor were derived. The validity of these expressions was verified through the analysis of experimental results.
publishDate 2010
dc.date.none.fl_str_mv 2010-12
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/11336/97711
Montero, María de Los Angeles; Gennero, Maria Rosa; Chialvo, Abel Cesar; Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 56; 2; 12-2010; 756-761
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/97711
identifier_str_mv Montero, María de Los Angeles; Gennero, Maria Rosa; Chialvo, Abel Cesar; Rotating Nanoparticle Array Electrode for the Kinetic Study of Reactions under Mixed Control; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 56; 2; 12-2010; 756-761
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.2010.09.091
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
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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