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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/120781
Ver los metadatos del registro completo
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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:UNLP2025-10-22T17:09:29Zoai: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:13292025-10-22 17:09:30.068SEDICI (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 |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/120781 |
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http://sedici.unlp.edu.ar/handle/10915/120781 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/0040-6090 info:eu-repo/semantics/altIdentifier/doi/10.1016/0040-6090(93)90763-F |
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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) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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