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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Autores: Custidiano, Ernesto Ramon, Piovano, S., Arvia, Alejandro Jorge, Chialvo, Abel Cesar, Ipohorski, M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1987
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/119440
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119440
Access Level:acceso abierto
Palabra clave:Ciencias Exactas
Química
Rhodium electrodes
Electrochemical faceting
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spelling Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodesCustidiano, Ernesto RamonPiovano, S.Arvia, Alejandro JorgeChialvo, Abel CesarIpohorski, M.Ciencias ExactasQuímicaRhodium electrodesElectrochemical facetingThe 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.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1987info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf229-238http://sedici.unlp.edu.ar/handle/10915/119440enginfo:eu-repo/semantics/altIdentifier/issn/0022-0728info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(87)80259-0info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:06:22Zoai:sedici.unlp.edu.ar:10915/119440Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:06:22.424SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
title Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
spellingShingle Electrochemical faceting and preferred cyrstallographic orientation of rhodium electrodes
Custidiano, Ernesto Ramon
Ciencias Exactas
Química
Rhodium electrodes
Electrochemical faceting
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
dc.creator.none.fl_str_mv Custidiano, Ernesto Ramon
Piovano, S.
Arvia, Alejandro Jorge
Chialvo, Abel Cesar
Ipohorski, M.
author Custidiano, Ernesto Ramon
author_facet Custidiano, Ernesto Ramon
Piovano, S.
Arvia, Alejandro Jorge
Chialvo, Abel Cesar
Ipohorski, M.
author_role author
author2 Piovano, S.
Arvia, Alejandro Jorge
Chialvo, Abel Cesar
Ipohorski, M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Rhodium electrodes
Electrochemical faceting
topic 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.
publishDate 1987
dc.date.none.fl_str_mv 1987
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/119440
url http://sedici.unlp.edu.ar/handle/10915/119440
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0022-0728
info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(87)80259-0
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
229-238
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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