Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes

The electrochemical faceting of Rh in 1 M H<sub>2</sub>SO<sub>4</sub> can be developed by applying repetitive periodic potentials in the range −0.1 to 1.2 V (vs. RHE) at frequencies greater than 0.5 kHz. The degree of electrochemical faceting, as followed voltammetrically at...

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Detalles Bibliográficos
Autores principales: Custidiano, Ernesto Ramon, Piovano, S., Arvia, Alejandro Jorge, Chialvo, Abel Cesar, Ipohorski, M.
Formato: Articulo
Lenguaje:Inglés
Publicado: 1987
Materias:
Ciencias Exactas
Química
Rhodium electrodes
Electrochemical faceting
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119440
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-119440
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
Rhodium electrodes
Electrochemical faceting
spellingShingle Ciencias Exactas
Química
Rhodium electrodes
Electrochemical faceting
Custidiano, Ernesto Ramon
Piovano, S.
Arvia, Alejandro Jorge
Chialvo, Abel Cesar
Ipohorski, M.
Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
topic_facet Ciencias Exactas
Química
Rhodium electrodes
Electrochemical faceting
description The electrochemical faceting of Rh in 1 M H<sub>2</sub>SO<sub>4</sub> can be developed by applying repetitive periodic potentials in the range −0.1 to 1.2 V (vs. RHE) at frequencies greater than 0.5 kHz. The degree of electrochemical faceting, as followed voltammetrically at 0.1 V/s in the H-adatom potential range, exhibits two different situations, depending on the lower and upper limits of the periodic potential. In one case the voltammogram exhibits two sharp reversible conjugated peaks related to the H-adatom reactions, similar in shape to those reported for Rh (111), although the peak potentials are closer to those found for Rh (110). In the other case, a complex voltammogram is obtained which can be related to a predominance of (111) and (100) crystallographic faces. SEM micrographs confirm the development of electrochemical faceting involving steps, terraces and pyramidal structures which are related to the preferred orientations.
format Articulo
Articulo
author Custidiano, Ernesto Ramon
Piovano, S.
Arvia, Alejandro Jorge
Chialvo, Abel Cesar
Ipohorski, M.
author_facet Custidiano, Ernesto Ramon
Piovano, S.
Arvia, Alejandro Jorge
Chialvo, Abel Cesar
Ipohorski, M.
author_sort Custidiano, Ernesto Ramon
title Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
title_short Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
title_full Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
title_fullStr Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
title_full_unstemmed Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
title_sort electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
publishDate 1987
url http://sedici.unlp.edu.ar/handle/10915/119440
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AT arviaalejandrojorge electrochemicalfacetingandpreferredcyrstallographicorientationofrhodiumelectrodes
AT chialvoabelcesar electrochemicalfacetingandpreferredcyrstallographicorientationofrhodiumelectrodes
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