Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes
Results for pyridine (Py) adsorption on columnar-structured (cs) gold substrates from acid solutions at different potentials and 298 K are compared to the predictions of a recently proposed Langmuirian adsorption model at columnar surfaces. The difference in the apparent adsorption Gibbs energy deri...
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| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1999
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/118296 |
| Aporte de: |
| id |
I19-R120-10915-118296 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Química Ciencias Exactas Adsorption at columnar surfaces Adsorption modeling Pyridine adsorption on gold |
| spellingShingle |
Química Ciencias Exactas Adsorption at columnar surfaces Adsorption modeling Pyridine adsorption on gold Gómez, M. M. Vara, J.M. Hernández, J. C. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes |
| topic_facet |
Química Ciencias Exactas Adsorption at columnar surfaces Adsorption modeling Pyridine adsorption on gold |
| description |
Results for pyridine (Py) adsorption on columnar-structured (cs) gold substrates from acid solutions at different potentials and 298 K are compared to the predictions of a recently proposed Langmuirian adsorption model at columnar surfaces. The difference in the apparent adsorption Gibbs energy derived from the adsorption isotherm of Py on cs- and smooth gold substrates was accounted for by a correction factor (<i>f</i>) that depends on the roughness (R) of the substrate according to <i>f</i>∝R<sup>−n</sup>, as expected from Monte Carlo simulation of the model. This agreement indicates that the substrate geometry plays a key role in the interpretation of adsorption isotherms. |
| format |
Articulo Articulo |
| author |
Gómez, M. M. Vara, J.M. Hernández, J. C. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author_facet |
Gómez, M. M. Vara, J.M. Hernández, J. C. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
| author_sort |
Gómez, M. M. |
| title |
Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes |
| title_short |
Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes |
| title_full |
Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes |
| title_fullStr |
Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes |
| title_full_unstemmed |
Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes |
| title_sort |
steric effects on molecular adsorption at columnar surfaces : a model for the adsorption of pyridine on gold electrodes |
| publishDate |
1999 |
| url |
http://sedici.unlp.edu.ar/handle/10915/118296 |
| work_keys_str_mv |
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Repositorios |
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