Observations on electrochemically oriented platinum surfaces

Autor:	Tadayoshi Ohmori, Michio Enyo, A.A. El-Shafei
Rok vydání:	1994
Předmět:	Surface (mathematics) General Chemical Engineering Inorganic chemistry Analytical chemistry chemistry.chemical_element Electrolyte Periodic potential Analytical Chemistry Orientation (vector space) Microcrystalline chemistry Electrochemistry Crystallite Platinum Smoothing
Zdroj:	Journal of Electroanalytical Chemistry. 379:247-252
ISSN:	1572-6657
DOI:	10.1016/0022-0728(94)87145-0
Popis:	Different orientations of microcrystalline surfaces on polycrystalline platinum were obtained by applying fast periodic potential perturbations. The surface orientation depends not only on the potential program but also on the electrolyte used during this treatment. In H 2 SO 4 and HClO 4 two different orientations (110) and (100) are developed depending on the lower and upper potential limits. In contrast, only one orientation in the direction of a (110) or a (100) single-crystal surface is developed in H 3 PO 4 or HCl respectively. Application of the fast potential scan leads to smoothing of the Pt electrode surface.
Databáze:	OpenAIRE
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