Scanning tunneling microscopy of electrochemically activated platinum surfaces : A direct ex-situ determination of the electrode nanotopography

A direct scanning tunneling microscopy ex-situ determination on the nanometer scale of the topography of electrochemically highly activated platinum electrodes is presented. A correlation between catalytic activity and surface microtopography becomes evident. This result gives support to a structura...

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Detalles Bibliográficos
Autores principales: Vázquez, L., Gómez, J., Baro, A. M., García, N., Marcos, M. L., González Velasco, J., Vara, J. M., Arvia, Alejandro Jorge, Presa, J., García, A., Aguilar, M.
Formato: Articulo
Lenguaje:Inglés
Publicado: 1987
Materias:
Ciencias Exactas
Química
scanning tunneling microscopy
platinum electrodes
electrocatalytic processes
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126531
https://pubs.acs.org/doi/pdf/10.1021/ja00240a022
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:A direct scanning tunneling microscopy ex-situ determination on the nanometer scale of the topography of electrochemically highly activated platinum electrodes is presented. A correlation between catalytic activity and surface microtopography becomes evident. This result gives support to a structural model for the activated electrode surface. In the model, a volume with a pebble-like structure allows electrocatalytic processes to occur practically free of diffusion relaxation contributions under usual voltammetric conditions.

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