The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer

Autores
Gómez Becerra, J.; Salvarezza, Roberto Carlos; Arvia, Alejandro Jorge
Año de publicación
1988
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The anodic electroformation of silver (I) oxide layer on polycrystalline silver electrodes in 0.1 M NaOH was studied by using potentiodynamic and potentiostatic techniques. The growth of the silver oxide layer under a linear potential sweep or potential step measurements involves as a first step the electroformation of Ag2O or AgOH monolayer at potentials close to the Ag/Ag2O reversible electrode potential. This monolayer grows through a solid diffusion mechanism to form a 3-D primary silver (I) oxide. Subsequently the building up of a secondary silver (I) oxide layer is clearly noticed when the potential exceeds 0.24 V (vs sce). The formation of this layer can be described in terms of an instantaneous nucleation and 3-D growth mechanism under diffusion control. The ageing effects at the primary layer level decreases the nucleation rate so that for the growth of the secondary layer an intermediate situation between instantaneous and progressive nucleation under diffusion control can be observed. The secondary silver (I) oxide layer can be related to the aged silver (I) oxide species previously reported.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
Química
Compuestos de Plata
Óxidos
Soluciones
Metales Alcalinos
Electrodos
electroformation
Plata
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:10915/83436
Acceder
id SEDICI_5b5860ef3a839962c4aae3aa597fb5e3
oai_identifier_str oai:sedici.unlp.edu.ar:10915/83436
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layerGómez Becerra, J.Salvarezza, Roberto CarlosArvia, Alejandro JorgeCiencias ExactasQuímicaCompuestos de PlataÓxidosSolucionesMetales AlcalinosElectrodoselectroformationPlataThe anodic electroformation of silver (I) oxide layer on polycrystalline silver electrodes in 0.1 M NaOH was studied by using potentiodynamic and potentiostatic techniques. The growth of the silver oxide layer under a linear potential sweep or potential step measurements involves as a first step the electroformation of Ag<sub>2</sub>O or AgOH monolayer at potentials close to the Ag/Ag<sub>2</sub>O reversible electrode potential. This monolayer grows through a solid diffusion mechanism to form a 3-D primary silver (I) oxide. Subsequently the building up of a secondary silver (I) oxide layer is clearly noticed when the potential exceeds 0.24 V (vs sce). The formation of this layer can be described in terms of an instantaneous nucleation and 3-D growth mechanism under diffusion control. The ageing effects at the primary layer level decreases the nucleation rate so that for the growth of the secondary layer an intermediate situation between instantaneous and progressive nucleation under diffusion control can be observed. The secondary silver (I) oxide layer can be related to the aged silver (I) oxide species previously reported.Instituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ciencias Exactas1988-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1431-1437http://sedici.unlp.edu.ar/handle/10915/83436enginfo:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(88)80135-Xinfo: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:UNLP2025-09-03T10:48:10Zoai:sedici.unlp.edu.ar:10915/83436Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:48:10.771SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer
title The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer
spellingShingle The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer
Gómez Becerra, J.
Ciencias Exactas
Química
Compuestos de Plata
Óxidos
Soluciones
Metales Alcalinos
Electrodos
electroformation
Plata
title_short The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer
title_full The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer
title_fullStr The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer
title_full_unstemmed The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer
title_sort The role of a slow phase formation process in the growth of anodic silver oxide layers in alkaline solutions : I. Electroformation of Ag(I) oxide layer
dc.creator.none.fl_str_mv Gómez Becerra, J.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author Gómez Becerra, J.
author_facet Gómez Becerra, J.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_role author
author2 Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Compuestos de Plata
Óxidos
Soluciones
Metales Alcalinos
Electrodos
electroformation
Plata
topic Ciencias Exactas
Química
Compuestos de Plata
Óxidos
Soluciones
Metales Alcalinos
Electrodos
electroformation
Plata
dc.description.none.fl_txt_mv The anodic electroformation of silver (I) oxide layer on polycrystalline silver electrodes in 0.1 M NaOH was studied by using potentiodynamic and potentiostatic techniques. The growth of the silver oxide layer under a linear potential sweep or potential step measurements involves as a first step the electroformation of Ag<sub>2</sub>O or AgOH monolayer at potentials close to the Ag/Ag<sub>2</sub>O reversible electrode potential. This monolayer grows through a solid diffusion mechanism to form a 3-D primary silver (I) oxide. Subsequently the building up of a secondary silver (I) oxide layer is clearly noticed when the potential exceeds 0.24 V (vs sce). The formation of this layer can be described in terms of an instantaneous nucleation and 3-D growth mechanism under diffusion control. The ageing effects at the primary layer level decreases the nucleation rate so that for the growth of the secondary layer an intermediate situation between instantaneous and progressive nucleation under diffusion control can be observed. The secondary silver (I) oxide layer can be related to the aged silver (I) oxide species previously reported.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ciencias Exactas
description The anodic electroformation of silver (I) oxide layer on polycrystalline silver electrodes in 0.1 M NaOH was studied by using potentiodynamic and potentiostatic techniques. The growth of the silver oxide layer under a linear potential sweep or potential step measurements involves as a first step the electroformation of Ag<sub>2</sub>O or AgOH monolayer at potentials close to the Ag/Ag<sub>2</sub>O reversible electrode potential. This monolayer grows through a solid diffusion mechanism to form a 3-D primary silver (I) oxide. Subsequently the building up of a secondary silver (I) oxide layer is clearly noticed when the potential exceeds 0.24 V (vs sce). The formation of this layer can be described in terms of an instantaneous nucleation and 3-D growth mechanism under diffusion control. The ageing effects at the primary layer level decreases the nucleation rate so that for the growth of the secondary layer an intermediate situation between instantaneous and progressive nucleation under diffusion control can be observed. The secondary silver (I) oxide layer can be related to the aged silver (I) oxide species previously reported.
publishDate 1988
dc.date.none.fl_str_mv 1988-10
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/10915/83436
url http://sedici.unlp.edu.ar/handle/10915/83436
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0013-4686
info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(88)80135-X
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
1431-1437
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
_version_ 1842260356792057856
score 13.13397

Publicaciones similares