Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions

Autores
Lopez Teijelo, Manuel; Zerbino, Jorge Omar; Vilche, Jorge Roberto; Arvia, Alejandro Jorge
Año de publicación
1984
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The ellipsometric and reflectance response at 5461 A of silver in 0.1 M NaOH at 25°C, is studied in the Ag(O)/Ag(I) potential range when the electrode has been subjected to different complex potentiodynamic perturbations. The optical response depends remarkably on the potential sweep rate, on the accumulated anodic charge and on the number of potential cycles. The data of the complex anodic film can he interpreted in terms of a single film model in two limiting cases defined, in,terms of the ancdic charge involved as thin and thick films, respectively: (i)for thin anodic films (Qa < 50 mCcm-2) nf = 1.50 -0.12 i and (ii) for thick anodic films (Qa < 50 mCcm-2) nf = 1.50 - 0.22 i. Time dependence of the optical parameters of both reformed silver and anodic film are shown. Optical results correlates with electrochemical data recently reported and arc discussed in terms of different degree of hydrations For each type of anodic film
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Silver
Anodic film
Ellipsometry
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:10915/118253
Acceder
id SEDICI_a0fe88bb9e2eab96cfe45a60a0753473
oai_identifier_str oai:sedici.unlp.edu.ar:10915/118253
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditionsLopez Teijelo, ManuelZerbino, Jorge OmarVilche, Jorge RobertoArvia, Alejandro JorgeCiencias ExactasQuímicaSilverAnodic filmEllipsometryThe ellipsometric and reflectance response at 5461 A of silver in 0.1 M NaOH at 25°C, is studied in the Ag(O)/Ag(I) potential range when the electrode has been subjected to different complex potentiodynamic perturbations. The optical response depends remarkably on the potential sweep rate, on the accumulated anodic charge and on the number of potential cycles. The data of the complex anodic film can he interpreted in terms of a single film model in two limiting cases defined, in,terms of the ancdic charge involved as thin and thick films, respectively: (i)for thin anodic films (Q<sub>a</sub> < 50 mCcm<sup>-2</sup>) n<sub>f</sub> = 1.50 -0.12 i and (ii) for thick anodic films (Q<sub>a</sub> < 50 mCcm<sup>-2</sup>) n<sub>f</sub> = 1.50 - 0.22 i. Time dependence of the optical parameters of both reformed silver and anodic film are shown. Optical results correlates with electrochemical data recently reported and arc discussed in terms of different degree of hydrations For each type of anodic filmInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1984info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf939-946http://sedici.unlp.edu.ar/handle/10915/118253spainfo:eu-repo/semantics/altIdentifier/issn/0013-4686info: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:UNLP2025-11-12T10:52:06Zoai:sedici.unlp.edu.ar:10915/118253Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-11-12 10:52:07.245SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
title Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
spellingShingle Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
Lopez Teijelo, Manuel
Ciencias Exactas
Química
Silver
Anodic film
Ellipsometry
title_short Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
title_full Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
title_fullStr Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
title_full_unstemmed Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
title_sort Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
dc.creator.none.fl_str_mv Lopez Teijelo, Manuel
Zerbino, Jorge Omar
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author Lopez Teijelo, Manuel
author_facet Lopez Teijelo, Manuel
Zerbino, Jorge Omar
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_role author
author2 Zerbino, Jorge Omar
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Silver
Anodic film
Ellipsometry
topic Ciencias Exactas
Química
Silver
Anodic film
Ellipsometry
dc.description.none.fl_txt_mv The ellipsometric and reflectance response at 5461 A of silver in 0.1 M NaOH at 25°C, is studied in the Ag(O)/Ag(I) potential range when the electrode has been subjected to different complex potentiodynamic perturbations. The optical response depends remarkably on the potential sweep rate, on the accumulated anodic charge and on the number of potential cycles. The data of the complex anodic film can he interpreted in terms of a single film model in two limiting cases defined, in,terms of the ancdic charge involved as thin and thick films, respectively: (i)for thin anodic films (Q<sub>a</sub> < 50 mCcm<sup>-2</sup>) n<sub>f</sub> = 1.50 -0.12 i and (ii) for thick anodic films (Q<sub>a</sub> < 50 mCcm<sup>-2</sup>) n<sub>f</sub> = 1.50 - 0.22 i. Time dependence of the optical parameters of both reformed silver and anodic film are shown. Optical results correlates with electrochemical data recently reported and arc discussed in terms of different degree of hydrations For each type of anodic film
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The ellipsometric and reflectance response at 5461 A of silver in 0.1 M NaOH at 25°C, is studied in the Ag(O)/Ag(I) potential range when the electrode has been subjected to different complex potentiodynamic perturbations. The optical response depends remarkably on the potential sweep rate, on the accumulated anodic charge and on the number of potential cycles. The data of the complex anodic film can he interpreted in terms of a single film model in two limiting cases defined, in,terms of the ancdic charge involved as thin and thick films, respectively: (i)for thin anodic films (Q<sub>a</sub> < 50 mCcm<sup>-2</sup>) n<sub>f</sub> = 1.50 -0.12 i and (ii) for thick anodic films (Q<sub>a</sub> < 50 mCcm<sup>-2</sup>) n<sub>f</sub> = 1.50 - 0.22 i. Time dependence of the optical parameters of both reformed silver and anodic film are shown. Optical results correlates with electrochemical data recently reported and arc discussed in terms of different degree of hydrations For each type of anodic film
publishDate 1984
dc.date.none.fl_str_mv 1984
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/10915/118253
url http://sedici.unlp.edu.ar/handle/10915/118253
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0013-4686
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
939-946
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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score 13.25334

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