Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation

Autores
Vela, María Elena; Marchiano, Susana Lucy; Salvarezza, Roberto Carlos; Arvia, Alejandro Jorge
Año de publicación
1995
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Rough columnar structured gold electrodeposits were prepared in aqueous 0.5 M M H2SO4 by electroreducing a hydrous gold oxide layer built up on a gold substrate by means of a fast periodic potential routine. The analysis of potentiodynamic and potentiostatic hydrous oxide layer electroreduction data indicated the initial nucleation of gold clusters at the metals|oxide interface. The growth of gold nuclei proceeded under a constant capture area condition for depositing gold ions contained in the hydrous oxide layer. Columnar gold electrodeposition was assisted by the gel-like characteristics of the hydrous gold oxide layer. Gold columnar growth ended as soon as the column tips reached the oxide s| solution interfacc. The proposed kinetic model accounts for the high surface area development and surface fractal properties of this type of metal electrode.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Columnar growth
Electroreduction kinetic model
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/121129
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/121129
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretationVela, María ElenaMarchiano, Susana LucySalvarezza, Roberto CarlosArvia, Alejandro JorgeCiencias ExactasQuímicaColumnar growthElectroreduction kinetic modelRough columnar structured gold electrodeposits were prepared in aqueous 0.5 M M H2SO4 by electroreducing a hydrous gold oxide layer built up on a gold substrate by means of a fast periodic potential routine. The analysis of potentiodynamic and potentiostatic hydrous oxide layer electroreduction data indicated the initial nucleation of gold clusters at the metals|oxide interface. The growth of gold nuclei proceeded under a constant capture area condition for depositing gold ions contained in the hydrous oxide layer. Columnar gold electrodeposition was assisted by the gel-like characteristics of the hydrous gold oxide layer. Gold columnar growth ended as soon as the column tips reached the oxide s| solution interfacc. The proposed kinetic model accounts for the high surface area development and surface fractal properties of this type of metal electrode.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1995info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf133-141http://sedici.unlp.edu.ar/handle/10915/121129enginfo:eu-repo/semantics/altIdentifier/issn/0022-0728info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(94)03843-Rinfo: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:UNLP2025-10-22T17:09:39Zoai:sedici.unlp.edu.ar:10915/121129Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:09:39.57SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
title Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
spellingShingle Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
Vela, María Elena
Ciencias Exactas
Química
Columnar growth
Electroreduction kinetic model
title_short Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
title_full Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
title_fullStr Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
title_full_unstemmed Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
title_sort Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
dc.creator.none.fl_str_mv Vela, María Elena
Marchiano, Susana Lucy
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author Vela, María Elena
author_facet Vela, María Elena
Marchiano, Susana Lucy
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_role author
author2 Marchiano, Susana Lucy
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Columnar growth
Electroreduction kinetic model
topic Ciencias Exactas
Química
Columnar growth
Electroreduction kinetic model
dc.description.none.fl_txt_mv Rough columnar structured gold electrodeposits were prepared in aqueous 0.5 M M H2SO4 by electroreducing a hydrous gold oxide layer built up on a gold substrate by means of a fast periodic potential routine. The analysis of potentiodynamic and potentiostatic hydrous oxide layer electroreduction data indicated the initial nucleation of gold clusters at the metals|oxide interface. The growth of gold nuclei proceeded under a constant capture area condition for depositing gold ions contained in the hydrous oxide layer. Columnar gold electrodeposition was assisted by the gel-like characteristics of the hydrous gold oxide layer. Gold columnar growth ended as soon as the column tips reached the oxide s| solution interfacc. The proposed kinetic model accounts for the high surface area development and surface fractal properties of this type of metal electrode.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description Rough columnar structured gold electrodeposits were prepared in aqueous 0.5 M M H2SO4 by electroreducing a hydrous gold oxide layer built up on a gold substrate by means of a fast periodic potential routine. The analysis of potentiodynamic and potentiostatic hydrous oxide layer electroreduction data indicated the initial nucleation of gold clusters at the metals|oxide interface. The growth of gold nuclei proceeded under a constant capture area condition for depositing gold ions contained in the hydrous oxide layer. Columnar gold electrodeposition was assisted by the gel-like characteristics of the hydrous gold oxide layer. Gold columnar growth ended as soon as the column tips reached the oxide s| solution interfacc. The proposed kinetic model accounts for the high surface area development and surface fractal properties of this type of metal electrode.
publishDate 1995
dc.date.none.fl_str_mv 1995
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/10915/121129
url http://sedici.unlp.edu.ar/handle/10915/121129
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0022-0728
info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(94)03843-R
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
133-141
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution 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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