The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques
- Autores
- Alonso, C.; Salvarezza, Roberto Carlos; Vara, J. M.; Arvia, Alejandro Jorge; Vazquez, L.; Bartolome, A.; Baro, A. M.
- Año de publicación
- 1990
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A simple method is presented for measuring the surface diffusion coefficients of Au and Pt atoms at electrodispersed electrodes of the same metals in contact with 0.5M H2SO4. The technique is based upon the time dependence of the surface roughness factor of electrodispersed metal overlayers. The method requires a model for the surface roughness of the metal structure. The model is deduced from microscopic measurements by a STM integrated into a conventional SEM microscope. This allows the relationship between the roughness factor and the area of the surface structure to be obtained. For Au and Pt in contact with an electrolyte solution, the values of our diffusion coefficients are higher than those reported in vacuum at the same temperature.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Química
Oro
Platino (Metal)
Electrodos
Evaluación
Electroquímica
Técnicas Electroquímicas
scanning tunneling microscopy
scanning electron microscopy - 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:10915/79873
Ver los metadatos del registro completo
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The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniquesAlonso, C.Salvarezza, Roberto CarlosVara, J. M.Arvia, Alejandro JorgeVazquez, L.Bartolome, A.Baro, A. M.Ciencias ExactasQuímicaOroPlatino (Metal)ElectrodosEvaluaciónElectroquímicaTécnicas Electroquímicasscanning tunneling microscopyscanning electron microscopyA simple method is presented for measuring the surface diffusion coefficients of Au and Pt atoms at electrodispersed electrodes of the same metals in contact with 0.5M H<sub>2</sub>SO<sub>4</sub>. The technique is based upon the time dependence of the surface roughness factor of electrodispersed metal overlayers. The method requires a model for the surface roughness of the metal structure. The model is deduced from microscopic measurements by a STM integrated into a conventional SEM microscope. This allows the relationship between the roughness factor and the area of the surface structure to be obtained. For Au and Pt in contact with an electrolyte solution, the values of our diffusion coefficients are higher than those reported in vacuum at the same temperature.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Facultad de Ciencias Exactas1990-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf2161-2166http://sedici.unlp.edu.ar/handle/10915/79873enginfo:eu-repo/semantics/altIdentifier/issn/0013-4651info:eu-repo/semantics/altIdentifier/doi/10.1149/1.2086904info: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:UNLP2025-09-03T10:46:52Zoai:sedici.unlp.edu.ar:10915/79873Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:46:52.638SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques |
| title |
The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques |
| spellingShingle |
The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques Alonso, C. Ciencias Exactas Química Oro Platino (Metal) Electrodos Evaluación Electroquímica Técnicas Electroquímicas scanning tunneling microscopy scanning electron microscopy |
| title_short |
The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques |
| title_full |
The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques |
| title_fullStr |
The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques |
| title_full_unstemmed |
The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques |
| title_sort |
The evaluation of surface diffusion coefficients of gold and platinum atoms at electrochemical interfaces from combined STM-SEM imaging and electrochemical techniques |
| dc.creator.none.fl_str_mv |
Alonso, C. Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge Vazquez, L. Bartolome, A. Baro, A. M. |
| author |
Alonso, C. |
| author_facet |
Alonso, C. Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge Vazquez, L. Bartolome, A. Baro, A. M. |
| author_role |
author |
| author2 |
Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge Vazquez, L. Bartolome, A. Baro, A. M. |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Química Oro Platino (Metal) Electrodos Evaluación Electroquímica Técnicas Electroquímicas scanning tunneling microscopy scanning electron microscopy |
| topic |
Ciencias Exactas Química Oro Platino (Metal) Electrodos Evaluación Electroquímica Técnicas Electroquímicas scanning tunneling microscopy scanning electron microscopy |
| dc.description.none.fl_txt_mv |
A simple method is presented for measuring the surface diffusion coefficients of Au and Pt atoms at electrodispersed electrodes of the same metals in contact with 0.5M H<sub>2</sub>SO<sub>4</sub>. The technique is based upon the time dependence of the surface roughness factor of electrodispersed metal overlayers. The method requires a model for the surface roughness of the metal structure. The model is deduced from microscopic measurements by a STM integrated into a conventional SEM microscope. This allows the relationship between the roughness factor and the area of the surface structure to be obtained. For Au and Pt in contact with an electrolyte solution, the values of our diffusion coefficients are higher than those reported in vacuum at the same temperature. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) Facultad de Ciencias Exactas |
| description |
A simple method is presented for measuring the surface diffusion coefficients of Au and Pt atoms at electrodispersed electrodes of the same metals in contact with 0.5M H<sub>2</sub>SO<sub>4</sub>. The technique is based upon the time dependence of the surface roughness factor of electrodispersed metal overlayers. The method requires a model for the surface roughness of the metal structure. The model is deduced from microscopic measurements by a STM integrated into a conventional SEM microscope. This allows the relationship between the roughness factor and the area of the surface structure to be obtained. For Au and Pt in contact with an electrolyte solution, the values of our diffusion coefficients are higher than those reported in vacuum at the same temperature. |
| publishDate |
1990 |
| dc.date.none.fl_str_mv |
1990-07 |
| 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/10915/79873 |
| url |
http://sedici.unlp.edu.ar/handle/10915/79873 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0013-4651 info:eu-repo/semantics/altIdentifier/doi/10.1149/1.2086904 |
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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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application/pdf 2161-2166 |
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