Electrooxidation/electroreduction processes at composite iron hydroxide layers in carbonate-bicarbonate buffers

The electrooxidation/electroreduction processes at precipitated iron hydroxide layers on platinum electrodes have been studied in carbonate-bicarbonate buffers at 25°C by using electrochemical methods. The initial characteristics and properties of the hydrous iron hydroxide were changed by varying t...

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Detalles Bibliográficos
Autores principales: Castro, Élida Beatriz, Vilche, Jorge Roberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 1991
Materias:
Química
Precipitation
Fe3O4
Active material
Reaction model
Electrochemical method
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/145218
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-145218
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Precipitation
Fe3O4
Active material
Reaction model
Electrochemical method
spellingShingle Química
Precipitation
Fe3O4
Active material
Reaction model
Electrochemical method
Castro, Élida Beatriz
Vilche, Jorge Roberto
Electrooxidation/electroreduction processes at composite iron hydroxide layers in carbonate-bicarbonate buffers
topic_facet Química
Precipitation
Fe3O4
Active material
Reaction model
Electrochemical method
description The electrooxidation/electroreduction processes at precipitated iron hydroxide layers on platinum electrodes have been studied in carbonate-bicarbonate buffers at 25°C by using electrochemical methods. The initial characteristics and properties of the hydrous iron hydroxide were changed by varying the precipitation conditions of the chemically formed active materials. Different potentialtime perturbation programs were employed to analyse the contribution of redox couples within the composite iron hydroxide layers on platinum electrodes and the corresponding electrochemical responses were compared with results obtained for massive iron electrodes in the same solutions. The complex electroreduction and electrooxidation processes are discussed on the basis of a reaction model which takes into account the incorporation of FeCO₃ in the hydrous iron hydroxide layer and its oxidation to FeOOH species, which in turn can participate in electroreduction reactions yielding Fe₃O₄, Fe(OH)₂, and soluble Fe(II) species.
format Articulo
Articulo
author Castro, Élida Beatriz
Vilche, Jorge Roberto
author_facet Castro, Élida Beatriz
Vilche, Jorge Roberto
author_sort Castro, Élida Beatriz
title Electrooxidation/electroreduction processes at composite iron hydroxide layers in carbonate-bicarbonate buffers
title_short Electrooxidation/electroreduction processes at composite iron hydroxide layers in carbonate-bicarbonate buffers
title_full Electrooxidation/electroreduction processes at composite iron hydroxide layers in carbonate-bicarbonate buffers
title_fullStr Electrooxidation/electroreduction processes at composite iron hydroxide layers in carbonate-bicarbonate buffers
title_full_unstemmed Electrooxidation/electroreduction processes at composite iron hydroxide layers in carbonate-bicarbonate buffers
title_sort electrooxidation/electroreduction processes at composite iron hydroxide layers in carbonate-bicarbonate buffers
publishDate 1991
url http://sedici.unlp.edu.ar/handle/10915/145218
work_keys_str_mv AT castroelidabeatriz electrooxidationelectroreductionprocessesatcompositeironhydroxidelayersincarbonatebicarbonatebuffers
AT vilchejorgeroberto electrooxidationelectroreductionprocessesatcompositeironhydroxidelayersincarbonatebicarbonatebuffers
bdutipo_str Repositorios
_version_ 1764820460302761985

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