Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction

Autores
Zerbino, Jorge Omar; Perdriel, Carlos L.; Arvia, Alejandro Jorge
Año de publicación
1993
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The ellipsometric characteristics of relatively thick hydrous Pt oxide layers (HPtOLs) produced by oxidation- reduction cycling in the 0–2.4 V range in 1 M H2SO4, and the surface topography of electrodispersed Pt electrodes (EDPtEs) obtained by electroreducing the HPtOLs have been determined in the 400–700 nm range at 25 °C. The HPtOL is light absorbing and can be described as a layer made up of H2O and Pt oxide. The water content increases with increasing layer thickness, approaching a PttO2-to-H2O molar ratio of about 4. The EDPtE resulting from the slow electroreduction of HPtOL can be described as a rough structure with a metal-to-void ratio close to 0.5, which is consistent with a brush-like geometry.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Pt oxide layers
Oxidation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/120781

id SEDICI_7eb8fe29138c60fba98ac772368a6a42
oai_identifier_str oai:sedici.unlp.edu.ar:10915/120781
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreductionZerbino, Jorge OmarPerdriel, Carlos L.Arvia, Alejandro JorgeCiencias ExactasQuímicaPt oxide layersOxidationThe ellipsometric characteristics of relatively thick hydrous Pt oxide layers (HPtOLs) produced by oxidation- reduction cycling in the 0–2.4 V range in 1 M H<sub>2</sub>SO<sub>4</sub>, and the surface topography of electrodispersed Pt electrodes (EDPtEs) obtained by electroreducing the HPtOLs have been determined in the 400–700 nm range at 25 °C. The HPtOL is light absorbing and can be described as a layer made up of H<sub>2</sub>O and Pt oxide. The water content increases with increasing layer thickness, approaching a PttO<sub>2</sub>-to-H<sub>2</sub>O molar ratio of about 4. The EDPtE resulting from the slow electroreduction of HPtOL can be described as a rough structure with a metal-to-void ratio close to 0.5, which is consistent with a brush-like geometry.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1993info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf63-67http://sedici.unlp.edu.ar/handle/10915/120781enginfo:eu-repo/semantics/altIdentifier/issn/0040-6090info:eu-repo/semantics/altIdentifier/doi/10.1016/0040-6090(93)90763-Finfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:35Zoai:sedici.unlp.edu.ar:10915/120781Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:35.719SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction
title Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction
spellingShingle Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction
Zerbino, Jorge Omar
Ciencias Exactas
Química
Pt oxide layers
Oxidation
title_short Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction
title_full Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction
title_fullStr Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction
title_full_unstemmed Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction
title_sort Ellipsometry of hydrous platinum oxide layers and electrodispersed platinum surfaces resulting from their electroreduction
dc.creator.none.fl_str_mv Zerbino, Jorge Omar
Perdriel, Carlos L.
Arvia, Alejandro Jorge
author Zerbino, Jorge Omar
author_facet Zerbino, Jorge Omar
Perdriel, Carlos L.
Arvia, Alejandro Jorge
author_role author
author2 Perdriel, Carlos L.
Arvia, Alejandro Jorge
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Pt oxide layers
Oxidation
topic Ciencias Exactas
Química
Pt oxide layers
Oxidation
dc.description.none.fl_txt_mv The ellipsometric characteristics of relatively thick hydrous Pt oxide layers (HPtOLs) produced by oxidation- reduction cycling in the 0–2.4 V range in 1 M H<sub>2</sub>SO<sub>4</sub>, and the surface topography of electrodispersed Pt electrodes (EDPtEs) obtained by electroreducing the HPtOLs have been determined in the 400–700 nm range at 25 °C. The HPtOL is light absorbing and can be described as a layer made up of H<sub>2</sub>O and Pt oxide. The water content increases with increasing layer thickness, approaching a PttO<sub>2</sub>-to-H<sub>2</sub>O molar ratio of about 4. The EDPtE resulting from the slow electroreduction of HPtOL can be described as a rough structure with a metal-to-void ratio close to 0.5, which is consistent with a brush-like geometry.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The ellipsometric characteristics of relatively thick hydrous Pt oxide layers (HPtOLs) produced by oxidation- reduction cycling in the 0–2.4 V range in 1 M H<sub>2</sub>SO<sub>4</sub>, and the surface topography of electrodispersed Pt electrodes (EDPtEs) obtained by electroreducing the HPtOLs have been determined in the 400–700 nm range at 25 °C. The HPtOL is light absorbing and can be described as a layer made up of H<sub>2</sub>O and Pt oxide. The water content increases with increasing layer thickness, approaching a PttO<sub>2</sub>-to-H<sub>2</sub>O molar ratio of about 4. The EDPtE resulting from the slow electroreduction of HPtOL can be described as a rough structure with a metal-to-void ratio close to 0.5, which is consistent with a brush-like geometry.
publishDate 1993
dc.date.none.fl_str_mv 1993
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/10915/120781
url http://sedici.unlp.edu.ar/handle/10915/120781
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0040-6090
info:eu-repo/semantics/altIdentifier/doi/10.1016/0040-6090(93)90763-F
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
63-67
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844616164638982144
score 13.070432