The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite
- Autores
- Martín, H.; Carro, P.; Hernández Creus, A.; González, S.; Andreasen, Gustavo; Salvarezza, Roberto Carlos; Arvia, Alejandro Jorge
- Año de publicación
- 2000
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Gold electrodeposition on C(0001) from aqueous 0.5 mM AuCl3·HCl, in the range of apparent charge density (6 ≤ q ≤ 10 mC/cm2) and under mass transport kinetic control from the solution side, results in the formation of nanometer to micrometer size Au(111) islands. These islands consist of a small three-dimensional (3D) central core and large quasi-two-dimensional (2D) dendritic branches. Ex situ scanning tunneling microscopy (STM) imaging data show that the shape of islands is determined by anisotropic surface diffusion contributions. The addition of citric acid to the plating solution hinders branching and promotes 3D island growth. The adsorption of citric acid at step edges hinders interterrace gold atom surface diffusion, as concluded from in situ STM imaging. Conversely, the addition of an excess of sodium chloride enhances 2D island growth and dense branching formation. These results can be explained considering that the presence of adsorbates either increases or decreases the height of activation energy barriers for interterrace surface diffusion. In this way, the change of the island aspect ratio with the nature of the additive can be explained.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
Gold electrodeposition
Scanning tunneling microscopy
Citric acid - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/121351
Ver los metadatos del registro completo
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The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of GraphiteMartín, H.Carro, P.Hernández Creus, A.González, S.Andreasen, GustavoSalvarezza, Roberto CarlosArvia, Alejandro JorgeCiencias ExactasQuímicaGold electrodepositionScanning tunneling microscopyCitric acidGold electrodeposition on C(0001) from aqueous 0.5 mM AuCl<sub>3</sub>·HCl, in the range of apparent charge density (6 ≤ q ≤ 10 mC/cm<sup>2</sup>) and under mass transport kinetic control from the solution side, results in the formation of nanometer to micrometer size Au(111) islands. These islands consist of a small three-dimensional (3D) central core and large quasi-two-dimensional (2D) dendritic branches. Ex situ scanning tunneling microscopy (STM) imaging data show that the shape of islands is determined by anisotropic surface diffusion contributions. The addition of citric acid to the plating solution hinders branching and promotes 3D island growth. The adsorption of citric acid at step edges hinders interterrace gold atom surface diffusion, as concluded from in situ STM imaging. Conversely, the addition of an excess of sodium chloride enhances 2D island growth and dense branching formation. These results can be explained considering that the presence of adsorbates either increases or decreases the height of activation energy barriers for interterrace surface diffusion. In this way, the change of the island aspect ratio with the nature of the additive can be explained.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2000info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf2915–2923http://sedici.unlp.edu.ar/handle/10915/121351enginfo:eu-repo/semantics/altIdentifier/issn/0743-7463info:eu-repo/semantics/altIdentifier/issn/1520-5827info:eu-repo/semantics/altIdentifier/doi/10.1021/la991130sinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:49Zoai:sedici.unlp.edu.ar:10915/121351Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:49.399SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite |
title |
The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite |
spellingShingle |
The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite Martín, H. Ciencias Exactas Química Gold electrodeposition Scanning tunneling microscopy Citric acid |
title_short |
The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite |
title_full |
The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite |
title_fullStr |
The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite |
title_full_unstemmed |
The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite |
title_sort |
The Influence of Adsorbates on the Growth Mode of Gold Islands Electrodeposited on the Basal Plane of Graphite |
dc.creator.none.fl_str_mv |
Martín, H. Carro, P. Hernández Creus, A. González, S. Andreasen, Gustavo Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author |
Martín, H. |
author_facet |
Martín, H. Carro, P. Hernández Creus, A. González, S. Andreasen, Gustavo Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author_role |
author |
author2 |
Carro, P. Hernández Creus, A. González, S. Andreasen, Gustavo Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Exactas Química Gold electrodeposition Scanning tunneling microscopy Citric acid |
topic |
Ciencias Exactas Química Gold electrodeposition Scanning tunneling microscopy Citric acid |
dc.description.none.fl_txt_mv |
Gold electrodeposition on C(0001) from aqueous 0.5 mM AuCl<sub>3</sub>·HCl, in the range of apparent charge density (6 ≤ q ≤ 10 mC/cm<sup>2</sup>) and under mass transport kinetic control from the solution side, results in the formation of nanometer to micrometer size Au(111) islands. These islands consist of a small three-dimensional (3D) central core and large quasi-two-dimensional (2D) dendritic branches. Ex situ scanning tunneling microscopy (STM) imaging data show that the shape of islands is determined by anisotropic surface diffusion contributions. The addition of citric acid to the plating solution hinders branching and promotes 3D island growth. The adsorption of citric acid at step edges hinders interterrace gold atom surface diffusion, as concluded from in situ STM imaging. Conversely, the addition of an excess of sodium chloride enhances 2D island growth and dense branching formation. These results can be explained considering that the presence of adsorbates either increases or decreases the height of activation energy barriers for interterrace surface diffusion. In this way, the change of the island aspect ratio with the nature of the additive can be explained. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
description |
Gold electrodeposition on C(0001) from aqueous 0.5 mM AuCl<sub>3</sub>·HCl, in the range of apparent charge density (6 ≤ q ≤ 10 mC/cm<sup>2</sup>) and under mass transport kinetic control from the solution side, results in the formation of nanometer to micrometer size Au(111) islands. These islands consist of a small three-dimensional (3D) central core and large quasi-two-dimensional (2D) dendritic branches. Ex situ scanning tunneling microscopy (STM) imaging data show that the shape of islands is determined by anisotropic surface diffusion contributions. The addition of citric acid to the plating solution hinders branching and promotes 3D island growth. The adsorption of citric acid at step edges hinders interterrace gold atom surface diffusion, as concluded from in situ STM imaging. Conversely, the addition of an excess of sodium chloride enhances 2D island growth and dense branching formation. These results can be explained considering that the presence of adsorbates either increases or decreases the height of activation energy barriers for interterrace surface diffusion. In this way, the change of the island aspect ratio with the nature of the additive can be explained. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000 |
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 |
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publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/121351 |
url |
http://sedici.unlp.edu.ar/handle/10915/121351 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0743-7463 info:eu-repo/semantics/altIdentifier/issn/1520-5827 info:eu-repo/semantics/altIdentifier/doi/10.1021/la991130s |
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info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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openAccess |
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http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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application/pdf 2915–2923 |
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