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

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...

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Detalles Bibliográficos
Autores principales: Gómez Becerra, J., Salvarezza, Roberto Carlos, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1988
Materias:
Ciencias Exactas
Química
Compuestos de Plata
Óxidos
Soluciones
Metales Alcalinos
Electrodos
electroformation
Plata
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83436
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83436
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Compuestos de Plata
Óxidos
Soluciones
Metales Alcalinos
Electrodos
electroformation
Plata
spellingShingle Ciencias Exactas
Química
Compuestos de Plata
Óxidos
Soluciones
Metales Alcalinos
Electrodos
electroformation
Plata
Gómez Becerra, J.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
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
topic_facet Ciencias Exactas
Química
Compuestos de Plata
Óxidos
Soluciones
Metales Alcalinos
Electrodos
electroformation
Plata
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.
format Articulo
Articulo
author Gómez Becerra, J.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_facet Gómez Becerra, J.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_sort Gómez Becerra, J.
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
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 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
publishDate 1988
url http://sedici.unlp.edu.ar/handle/10915/83436
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