Artículos de revistas
Voltammetric characterization of stepped platinum single crystal surfaces vicinal to the (110) pole
Fecha
2009Registro en:
ELECTROCHEMISTRY COMMUNICATIONS, v.11, n.7, p.1515-1518, 2009
1388-2481
10.1016/j.elecom.2009.05.044
Autor
SOUZA-GARCIA, J.
CLIMENT, V.
FELIU, J. M.
Institución
Resumen
Platinum stepped surfaces vicinal to the (1 1 0) crystallographic pole have been investigated voltammetrically in 0.1 M HClO(4) and 0.1 M H(2)SO(4) solutions. Changes in the voltammetric profile with the step density suggest the existence of two types of surface sites, that has been ascribed to linear and bidimensional domains. This result indicates the existence of important restructuring processes that separate the real surface distribution from the nominal one. The electronic properties of the surfaces have been characterized with the CO charge displacement method and the potential of zero total charge has been calculated as a function of the step density. (c) 2009 Elsevier B.V. All rights reserved.