Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions

Autores
Montero, María de Los Angeles; Fernandez, Jose Luis; Gennero, Maria Rosa; Chialvo, Abel Cesar
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The hydrogen oxidation reaction was studied on a rotating disc electrode of nanostructured iridium supported on glassy carbon. The electrode was prepared via sputtering and further annealing at 400ºC under hydrogen atmosphere in order to avoid the presence of iridium oxide. The iridium film was analyzed by microscopic (SEM, AFM), spectroscopic (XRD and XPS) and electrochemical (cyclic voltammetry) techniques, which allowed to verify the nanostructured morphology and the absence of any phase other than metallic iridium. The real surface area was evaluated by adsorption of UPD hydrogen and CO stripping. Experimental current ? overpotential (E) curves of the hydrogen oxidation reaction were obtained in the range comprised between -0.03 V and 0.20 V at different rotation rates in sulphuric acid solution. They were correlated by kinetic expressions and the corresponding values of the kinetic parameters were evaluated. It was verified that over this overpotential region the reaction proceeds almost purely through the Tafel-Volmer route. Moreover, an exchange current density jo = 1.34 mA cm-2 was calculated.
Fil: Montero, María de Los Angeles. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fernandez, Jose Luis. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gennero, Maria Rosa. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Chialvo, Abel Cesar. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Iridium
Nanoparticles
Hydrogen Oxidation
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:11336/23486
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid SolutionsMontero, María de Los AngelesFernandez, Jose LuisGennero, Maria RosaChialvo, Abel CesarIridiumNanoparticlesHydrogen Oxidationhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The hydrogen oxidation reaction was studied on a rotating disc electrode of nanostructured iridium supported on glassy carbon. The electrode was prepared via sputtering and further annealing at 400ºC under hydrogen atmosphere in order to avoid the presence of iridium oxide. The iridium film was analyzed by microscopic (SEM, AFM), spectroscopic (XRD and XPS) and electrochemical (cyclic voltammetry) techniques, which allowed to verify the nanostructured morphology and the absence of any phase other than metallic iridium. The real surface area was evaluated by adsorption of UPD hydrogen and CO stripping. Experimental current ? overpotential (E) curves of the hydrogen oxidation reaction were obtained in the range comprised between -0.03 V and 0.20 V at different rotation rates in sulphuric acid solution. They were correlated by kinetic expressions and the corresponding values of the kinetic parameters were evaluated. It was verified that over this overpotential region the reaction proceeds almost purely through the Tafel-Volmer route. Moreover, an exchange current density jo = 1.34 mA cm-2 was calculated.Fil: Montero, María de Los Angeles. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fernandez, Jose Luis. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gennero, Maria Rosa. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Chialvo, Abel Cesar. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmer Chemical Soc Inc2013-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23486Montero, María de Los Angeles; Fernandez, Jose Luis; Gennero, Maria Rosa; Chialvo, Abel Cesar; Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions; Amer Chemical Soc Inc; Journal of Physical Chemistry C; 117; 48; 11-2013; 25269-252751932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp407951uinfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp407951uinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:52:38Zoai:ri.conicet.gov.ar:11336/23486instacron: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 09:52:39.206CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions
title Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions
spellingShingle Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions
Montero, María de Los Angeles
Iridium
Nanoparticles
Hydrogen Oxidation
title_short Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions
title_full Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions
title_fullStr Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions
title_full_unstemmed Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions
title_sort Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions
dc.creator.none.fl_str_mv Montero, María de Los Angeles
Fernandez, Jose Luis
Gennero, Maria Rosa
Chialvo, Abel Cesar
author Montero, María de Los Angeles
author_facet Montero, María de Los Angeles
Fernandez, Jose Luis
Gennero, Maria Rosa
Chialvo, Abel Cesar
author_role author
author2 Fernandez, Jose Luis
Gennero, Maria Rosa
Chialvo, Abel Cesar
author2_role author
author
author
dc.subject.none.fl_str_mv Iridium
Nanoparticles
Hydrogen Oxidation
topic Iridium
Nanoparticles
Hydrogen Oxidation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The hydrogen oxidation reaction was studied on a rotating disc electrode of nanostructured iridium supported on glassy carbon. The electrode was prepared via sputtering and further annealing at 400ºC under hydrogen atmosphere in order to avoid the presence of iridium oxide. The iridium film was analyzed by microscopic (SEM, AFM), spectroscopic (XRD and XPS) and electrochemical (cyclic voltammetry) techniques, which allowed to verify the nanostructured morphology and the absence of any phase other than metallic iridium. The real surface area was evaluated by adsorption of UPD hydrogen and CO stripping. Experimental current ? overpotential (E) curves of the hydrogen oxidation reaction were obtained in the range comprised between -0.03 V and 0.20 V at different rotation rates in sulphuric acid solution. They were correlated by kinetic expressions and the corresponding values of the kinetic parameters were evaluated. It was verified that over this overpotential region the reaction proceeds almost purely through the Tafel-Volmer route. Moreover, an exchange current density jo = 1.34 mA cm-2 was calculated.
Fil: Montero, María de Los Angeles. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fernandez, Jose Luis. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gennero, Maria Rosa. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Chialvo, Abel Cesar. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The hydrogen oxidation reaction was studied on a rotating disc electrode of nanostructured iridium supported on glassy carbon. The electrode was prepared via sputtering and further annealing at 400ºC under hydrogen atmosphere in order to avoid the presence of iridium oxide. The iridium film was analyzed by microscopic (SEM, AFM), spectroscopic (XRD and XPS) and electrochemical (cyclic voltammetry) techniques, which allowed to verify the nanostructured morphology and the absence of any phase other than metallic iridium. The real surface area was evaluated by adsorption of UPD hydrogen and CO stripping. Experimental current ? overpotential (E) curves of the hydrogen oxidation reaction were obtained in the range comprised between -0.03 V and 0.20 V at different rotation rates in sulphuric acid solution. They were correlated by kinetic expressions and the corresponding values of the kinetic parameters were evaluated. It was verified that over this overpotential region the reaction proceeds almost purely through the Tafel-Volmer route. Moreover, an exchange current density jo = 1.34 mA cm-2 was calculated.
publishDate 2013
dc.date.none.fl_str_mv 2013-11
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/11336/23486
Montero, María de Los Angeles; Fernandez, Jose Luis; Gennero, Maria Rosa; Chialvo, Abel Cesar; Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions; Amer Chemical Soc Inc; Journal of Physical Chemistry C; 117; 48; 11-2013; 25269-25275
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/23486
identifier_str_mv Montero, María de Los Angeles; Fernandez, Jose Luis; Gennero, Maria Rosa; Chialvo, Abel Cesar; Kinetic Study of the Hydrogen Oxidation Reaction on Nanostructured Iridium Electrodes in Acid Solutions; Amer Chemical Soc Inc; Journal of Physical Chemistry C; 117; 48; 11-2013; 25269-25275
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/jp407951u
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp407951u
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Amer Chemical Soc Inc
publisher.none.fl_str_mv Amer Chemical Soc 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
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score 13.13397

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