A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution

The early stages of Ag electrodeposition on columnar structured Pt electrodes was investigated in acid solutions covering the underpotential deposition (upd) and overpotential deposition (opd) ranges. Results show a remarkable dependence of the Ag growth mode on the electrode roughness and potential...

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Detalles Bibliográficos
Autores: Martins, M. M., Salvarezza, Roberto Carlos, Arvia, Alejandro Jorge
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1991
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/118889
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/118889
Access Level:acceso abierto
Palabra clave:Química
Ciencias Exactas
Metal electrodeposition
Electrode roughness
Growth modes
Microcolumnar structured metal electrodes
Porous structures
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spelling A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solutionMartins, M. M.Salvarezza, Roberto CarlosArvia, Alejandro JorgeQuímicaCiencias ExactasMetal electrodepositionElectrode roughnessGrowth modesMicrocolumnar structured metal electrodesPorous structuresThe early stages of Ag electrodeposition on columnar structured Pt electrodes was investigated in acid solutions covering the underpotential deposition (upd) and overpotential deposition (opd) ranges. Results show a remarkable dependence of the Ag growth mode on the electrode roughness and potential sweep rate. At high potential sweep rates and large substrate roughness factors a 3-D to 2-D rearrangement can be detected. This process appears to be also accompanied by a Pt-Ag formation. For this type of electrode, both processes hinder the nucleation and growth of the 3-D Ag phase. Under certain conditions the complete Ag plating of the entire porous structure can be produced and the voltammetric behaviour of the system then approaches that observed for the Ag/Ag<sup>+</sup> electrode reaction at an electrochemical thin layer cell.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1991info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1617-1622http://sedici.unlp.edu.ar/handle/10915/118889enginfo:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(91)85015-Yinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:06:13Zoai:sedici.unlp.edu.ar:10915/118889Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:06:13.816SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution
title A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution
spellingShingle A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution
Martins, M. M.
Química
Ciencias Exactas
Metal electrodeposition
Electrode roughness
Growth modes
Microcolumnar structured metal electrodes
Porous structures
title_short A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution
title_full A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution
title_fullStr A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution
title_full_unstemmed A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution
title_sort A study on the voltammetric behaviour of silver on electrodispersed platinum electrodes in acid solution
dc.creator.none.fl_str_mv Martins, M. M.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author Martins, M. M.
author_facet Martins, M. M.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_role author
author2 Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author2_role author
author
dc.subject.none.fl_str_mv Química
Ciencias Exactas
Metal electrodeposition
Electrode roughness
Growth modes
Microcolumnar structured metal electrodes
Porous structures
topic Química
Ciencias Exactas
Metal electrodeposition
Electrode roughness
Growth modes
Microcolumnar structured metal electrodes
Porous structures
description The early stages of Ag electrodeposition on columnar structured Pt electrodes was investigated in acid solutions covering the underpotential deposition (upd) and overpotential deposition (opd) ranges. Results show a remarkable dependence of the Ag growth mode on the electrode roughness and potential sweep rate. At high potential sweep rates and large substrate roughness factors a 3-D to 2-D rearrangement can be detected. This process appears to be also accompanied by a Pt-Ag formation. For this type of electrode, both processes hinder the nucleation and growth of the 3-D Ag phase. Under certain conditions the complete Ag plating of the entire porous structure can be produced and the voltammetric behaviour of the system then approaches that observed for the Ag/Ag<sup>+</sup> electrode reaction at an electrochemical thin layer cell.
publishDate 1991
dc.date.none.fl_str_mv 1991
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/118889
url http://sedici.unlp.edu.ar/handle/10915/118889
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0013-4686
info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(91)85015-Y
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1617-1622
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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