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
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/118296
Acceder
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network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling 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:UNLP2025-10-22T17:08:45Zoai: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:13292025-10-22 17:08:45.591SEDICI (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
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
74-81
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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