Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation
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...
Guardado en:
| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1995
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/121129 |
| Aporte de: |
| id |
I19-R120-10915-121129 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Química Columnar growth Electroreduction kinetic model |
| spellingShingle |
Ciencias Exactas Química Columnar growth Electroreduction kinetic model Vela, María Elena Marchiano, Susana Lucy Salvarezza, Roberto Carlos Arvia, Alejandro Jorge Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation |
| topic_facet |
Ciencias Exactas Química Columnar growth Electroreduction kinetic model |
| 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. |
| format |
Articulo Articulo |
| author |
Vela, María Elena Marchiano, Susana Lucy Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author_facet |
Vela, María Elena Marchiano, Susana Lucy Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author_sort |
Vela, María Elena |
| title |
Growth of columnar gold electrodes by electroreducing hydrous gold oxide layers : Kinetics and mechanistic interpretation |
| 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 |
| publishDate |
1995 |
| url |
http://sedici.unlp.edu.ar/handle/10915/121129 |
| work_keys_str_mv |
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Repositorios |
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