Aa. Elshafei et al., OBSERVATIONS ON ELECTROCHEMICALLY ORIENTED PLATINUM SURFACES, Journal of electroanalytical chemistry [1992], 379(1-2), 1994, pp. 247-252
Different orientations of microcrystalline surfaces on polycrystalline
platinum were obtained by applying fast periodic potential perturbati
ons. The surface orientation depends not only on the potential program
but also on the electrolyte used during this treatment. In H2SO4 and
HClO4 two different orientations (110) and (100) are developed dependi
ng on the lower and upper potential limits. In contrast, only one orie
ntation in the direction of a (110) or a (100) single-crystal surface
is developed in H3PO4 or HCl respectively. Application of the fast pot
ential scan leads to smoothing of the Pt electrode surface.