Different processes contributing to the development of preferred oriented platinum surfaces by fast periodic potential perturbation techniques

The development of preferred oriented (po) platinum surfaces, either [(100)poPt] or [(111)poPt], in acid solutions results from the contributions of electroadsorption/electrodesorption processes and electrodissolution/electrodeposition of platinum. In the case of [(100)poPt], the overall reaction im...

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Detalles Bibliográficos
Autores principales: Perdriel, Carlos L., Triaca, Walter Enrique, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1986
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119328
Aporte de:
id I19-R120-10915-119328
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Ciencias Exactas
Platinum surfaces
Electrochemical faceting
Fast periodic potential perturbation
spellingShingle Química
Ciencias Exactas
Platinum surfaces
Electrochemical faceting
Fast periodic potential perturbation
Perdriel, Carlos L.
Triaca, Walter Enrique
Arvia, Alejandro Jorge
Different processes contributing to the development of preferred oriented platinum surfaces by fast periodic potential perturbation techniques
topic_facet Química
Ciencias Exactas
Platinum surfaces
Electrochemical faceting
Fast periodic potential perturbation
description The development of preferred oriented (po) platinum surfaces, either [(100)poPt] or [(111)poPt], in acid solutions results from the contributions of electroadsorption/electrodesorption processes and electrodissolution/electrodeposition of platinum. In the case of [(100)poPt], the overall reaction implies no appreciable roughening, whereas for [(111)poPt] the voltammetric charge increases slightly after the preferred orientation treatment. Runs were made with periodic potential scans, either triangular or rectangular, under conditions corresponding to the optimal conditions for development of the [(100)poPt] and [(111)poPt] surfaces. The amount of net soluble platinum as determined by chemical analysis increases linearly with the duration of the periodic potential perturbation applied to the platinum polycrystalline electrode. The net amount of dissolved platinum produced at perturbation frequencies required for the development of the preferred orientation is nearly two orders of magnitudes smaller than that found under conventional triangular potential voltammetry. The results offer the possibility of interpreting the electrochemical faceting of platinum electrodes in acid electrolytes.
format Articulo
Articulo
author Perdriel, Carlos L.
Triaca, Walter Enrique
Arvia, Alejandro Jorge
author_facet Perdriel, Carlos L.
Triaca, Walter Enrique
Arvia, Alejandro Jorge
author_sort Perdriel, Carlos L.
title Different processes contributing to the development of preferred oriented platinum surfaces by fast periodic potential perturbation techniques
title_short Different processes contributing to the development of preferred oriented platinum surfaces by fast periodic potential perturbation techniques
title_full Different processes contributing to the development of preferred oriented platinum surfaces by fast periodic potential perturbation techniques
title_fullStr Different processes contributing to the development of preferred oriented platinum surfaces by fast periodic potential perturbation techniques
title_full_unstemmed Different processes contributing to the development of preferred oriented platinum surfaces by fast periodic potential perturbation techniques
title_sort different processes contributing to the development of preferred oriented platinum surfaces by fast periodic potential perturbation techniques
publishDate 1986
url http://sedici.unlp.edu.ar/handle/10915/119328
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AT triacawalterenrique differentprocessescontributingtothedevelopmentofpreferredorientedplatinumsurfacesbyfastperiodicpotentialperturbationtechniques
AT arviaalejandrojorge differentprocessescontributingtothedevelopmentofpreferredorientedplatinumsurfacesbyfastperiodicpotentialperturbationtechniques
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