Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes
- Autores
- García, M. P.; Gómez, M. M.; Salvarezza, Roberto Carlos; Arvia, Alejandro Jorge
- Año de publicación
- 1993
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The roughness relaxation of thin columnar Au electrodeposits at constant potential and 25°C in 0.05 M NaF, 0.05 M KCl and 0.05 M K2SO4 has been studied. These measurements were taken in the −0.6 to 0.8 V (vs Hg/Hg2SO4 reference electrode) potential range. The kinetic data were obtained from the roughness factor decay over 5 × 104 s. The value of the surface diffusion coefficient Ds of Au atoms was derived from the roughness decay law at constant potential and pH. At any potential, the value of Ds increases in the order NaF < K2SO4 < KCl. This sequence correlates with the specific adsorption of anions on Au. In K2SO4 and NaF solutions, as the electroformation of AuOH species takes place, the effect of SO42− and F− ions is no longer observed. In contrast, in 0.05 M KCl solution, the value of Ds increases steadily as the applied potential is increased positively.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
Gold electrodes
Roughness relaxation - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/3.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/119383
Ver los metadatos del registro completo
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Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytesGarcía, M. P.Gómez, M. M.Salvarezza, Roberto CarlosArvia, Alejandro JorgeCiencias ExactasQuímicaGold electrodesRoughness relaxationThe roughness relaxation of thin columnar Au electrodeposits at constant potential and 25°C in 0.05 M NaF, 0.05 M KCl and 0.05 M K<sub>2</sub>SO<sub>4</sub> has been studied. These measurements were taken in the −0.6 to 0.8 V (vs Hg/Hg<sub>2</sub>SO<sub>4</sub> reference electrode) potential range. The kinetic data were obtained from the roughness factor decay over 5 × 10<sup>4</sup> s. The value of the surface diffusion coefficient Ds of Au atoms was derived from the roughness decay law at constant potential and pH. At any potential, the value of Ds increases in the order NaF < K<sub>2</sub>SO<sub>4</sub> < KCl. This sequence correlates with the specific adsorption of anions on Au. In K<sub>2</sub>SO<sub>4</sub> and NaF solutions, as the electroformation of AuOH species takes place, the effect of SO<sub>4</sub><sup>2−</sup> and F<sup>−</sup> ions is no longer observed. In contrast, in 0.05 M KCl solution, the value of D<sub>s</sub> increases steadily as the applied potential is increased positively.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1993info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf237-246http://sedici.unlp.edu.ar/handle/10915/119383enginfo:eu-repo/semantics/altIdentifier/issn/1572-6657info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(93)80091-Uinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/Creative Commons Attribution 3.0 Unported (CC BY 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:10Zoai:sedici.unlp.edu.ar:10915/119383Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:10.651SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes |
title |
Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes |
spellingShingle |
Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes García, M. P. Ciencias Exactas Química Gold electrodes Roughness relaxation |
title_short |
Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes |
title_full |
Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes |
title_fullStr |
Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes |
title_full_unstemmed |
Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes |
title_sort |
Effect of the solution composition and the applied potential on the kinetics of roughness relaxation at gold electrodes in slightly acid electrolytes |
dc.creator.none.fl_str_mv |
García, M. P. Gómez, M. M. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author |
García, M. P. |
author_facet |
García, M. P. Gómez, M. M. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author_role |
author |
author2 |
Gómez, M. M. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Ciencias Exactas Química Gold electrodes Roughness relaxation |
topic |
Ciencias Exactas Química Gold electrodes Roughness relaxation |
dc.description.none.fl_txt_mv |
The roughness relaxation of thin columnar Au electrodeposits at constant potential and 25°C in 0.05 M NaF, 0.05 M KCl and 0.05 M K<sub>2</sub>SO<sub>4</sub> has been studied. These measurements were taken in the −0.6 to 0.8 V (vs Hg/Hg<sub>2</sub>SO<sub>4</sub> reference electrode) potential range. The kinetic data were obtained from the roughness factor decay over 5 × 10<sup>4</sup> s. The value of the surface diffusion coefficient Ds of Au atoms was derived from the roughness decay law at constant potential and pH. At any potential, the value of Ds increases in the order NaF < K<sub>2</sub>SO<sub>4</sub> < KCl. This sequence correlates with the specific adsorption of anions on Au. In K<sub>2</sub>SO<sub>4</sub> and NaF solutions, as the electroformation of AuOH species takes place, the effect of SO<sub>4</sub><sup>2−</sup> and F<sup>−</sup> ions is no longer observed. In contrast, in 0.05 M KCl solution, the value of D<sub>s</sub> increases steadily as the applied potential is increased positively. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
description |
The roughness relaxation of thin columnar Au electrodeposits at constant potential and 25°C in 0.05 M NaF, 0.05 M KCl and 0.05 M K<sub>2</sub>SO<sub>4</sub> has been studied. These measurements were taken in the −0.6 to 0.8 V (vs Hg/Hg<sub>2</sub>SO<sub>4</sub> reference electrode) potential range. The kinetic data were obtained from the roughness factor decay over 5 × 10<sup>4</sup> s. The value of the surface diffusion coefficient Ds of Au atoms was derived from the roughness decay law at constant potential and pH. At any potential, the value of Ds increases in the order NaF < K<sub>2</sub>SO<sub>4</sub> < KCl. This sequence correlates with the specific adsorption of anions on Au. In K<sub>2</sub>SO<sub>4</sub> and NaF solutions, as the electroformation of AuOH species takes place, the effect of SO<sub>4</sub><sup>2−</sup> and F<sup>−</sup> ions is no longer observed. In contrast, in 0.05 M KCl solution, the value of D<sub>s</sub> increases steadily as the applied potential is increased positively. |
publishDate |
1993 |
dc.date.none.fl_str_mv |
1993 |
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/10915/119383 |
url |
http://sedici.unlp.edu.ar/handle/10915/119383 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/1572-6657 info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(93)80091-U |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported (CC BY 3.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported (CC BY 3.0) |
dc.format.none.fl_str_mv |
application/pdf 237-246 |
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reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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Universidad Nacional de La Plata |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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