Smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : A mechanistic approach

The electroreduction of thick platinum oxides accumulated by the application of a fast square wave perturbing potential in 0.5 M H<sub>2</sub>SO<sub>4</sub> was studied by using potentiodynamic and potentiostatic techniques complemented with scanning electron miscroscopy. The...

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Detalles Bibliográficos
Autores principales:	Bolzán, Agustín Eduardo, Castro Luna Berenguer, Ana María del Carmen, Visintin, Arnaldo, Salvarezza, Roberto Carlos, Arvia, Alejandro Jorge
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1988
Materias:	Ciencias Exactas Química platinum deposits scanning electron miscroscopy electroreduction
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/126593 https://www.sciencedirect.com/science/article/abs/pii/0013468688850096
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-126593
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 platinum deposits scanning electron miscroscopy electroreduction
spellingShingle	Ciencias Exactas Química platinum deposits scanning electron miscroscopy electroreduction Bolzán, Agustín Eduardo Castro Luna Berenguer, Ana María del Carmen Visintin, Arnaldo Salvarezza, Roberto Carlos Arvia, Alejandro Jorge Smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : A mechanistic approach
topic_facet	Ciencias Exactas Química platinum deposits scanning electron miscroscopy electroreduction
description	The electroreduction of thick platinum oxides accumulated by the application of a fast square wave perturbing potential in 0.5 M H<sub>2</sub>SO<sub>4</sub> was studied by using potentiodynamic and potentiostatic techniques complemented with scanning electron miscroscopy. The electroreduction process can be unambigously explained through an instantaneous nucleation and 3-D growth of right circular cones under charge transfer control where diffusion of reacting species to the growing centres is essential for further expansion. The growth mode of the Pt crystallites either smooth or rough depends on the electroreduction conditions. The rought/smooth modes of growth result from the influence of the electric field on the transport of particles in the reaction region and on the supersaturation concentration operating during the electrocrystallization process.
format	Articulo Articulo
author	Bolzán, Agustín Eduardo Castro Luna Berenguer, Ana María del Carmen Visintin, Arnaldo Salvarezza, Roberto Carlos Arvia, Alejandro Jorge
author_facet	Bolzán, Agustín Eduardo Castro Luna Berenguer, Ana María del Carmen Visintin, Arnaldo Salvarezza, Roberto Carlos Arvia, Alejandro Jorge
author_sort	Bolzán, Agustín Eduardo
title	Smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : A mechanistic approach
title_short	Smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : A mechanistic approach
title_full	Smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : A mechanistic approach
title_fullStr	Smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : A mechanistic approach
title_full_unstemmed	Smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : A mechanistic approach
title_sort	smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : a mechanistic approach
publishDate	1988
url	http://sedici.unlp.edu.ar/handle/10915/126593 https://www.sciencedirect.com/science/article/abs/pii/0013468688850096
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bdutipo_str	Repositorios
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Smooth and rough platinum deposits resulting from the electroreduction of hydrous oxide platinum overlayers : A mechanistic approach

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