Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes
- Autores
- Gómez, M. M.; Vara, J.M.; Hernández, J. C.; Salvarezza, Roberto Carlos; Arvia, Alejandro Jorge
- Año de publicación
- 1999
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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 (f) that depends on the roughness (R) of the substrate according to f∝R−n, 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.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Química
Ciencias Exactas
Adsorption at columnar surfaces
Adsorption modeling
Pyridine adsorption on gold - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/118296
Ver los metadatos del registro completo
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Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodesGómez, M. M.Vara, J.M.Hernández, J. C.Salvarezza, Roberto CarlosArvia, Alejandro JorgeQuímicaCiencias ExactasAdsorption at columnar surfacesAdsorption modelingPyridine adsorption on goldResults 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.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1999info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf74-81http://sedici.unlp.edu.ar/handle/10915/118296enginfo:eu-repo/semantics/altIdentifier/issn/1572-6657info: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:UNLP2025-09-29T11:27:49Zoai:sedici.unlp.edu.ar:10915/118296Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:27:49.958SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes |
title |
Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes |
spellingShingle |
Steric effects on molecular adsorption at columnar surfaces : A model for the adsorption of pyridine on gold electrodes Gómez, M. M. Química Ciencias Exactas Adsorption at columnar surfaces Adsorption modeling Pyridine adsorption on gold |
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 |
dc.creator.none.fl_str_mv |
Gómez, M. M. Vara, J.M. Hernández, J. C. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author |
Gómez, M. M. |
author_facet |
Gómez, M. M. Vara, J.M. Hernández, J. C. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author_role |
author |
author2 |
Vara, J.M. Hernández, J. C. Salvarezza, Roberto Carlos Arvia, Alejandro Jorge |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Química Ciencias Exactas Adsorption at columnar surfaces Adsorption modeling Pyridine adsorption on gold |
topic |
Química Ciencias Exactas Adsorption at columnar surfaces Adsorption modeling Pyridine adsorption on gold |
dc.description.none.fl_txt_mv |
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. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
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. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999 |
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/10915/118296 |
url |
http://sedici.unlp.edu.ar/handle/10915/118296 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/1572-6657 |
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 |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf 74-81 |
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