ABSTRACT
Voltammetric and capacitive studies were carried out on 13 gold single-crystal electrodes, single and stepped faces, in the presence of oxoanions with tetrahedral and planar geometry, but with variable O-O distances, per-chlorate, nitrate, sulphate and phosphate. The results indicate that the effect of the introduction of steps on single crystal is seen as “regular” features on surface reconstruction, Au-water interactions, and oxoanion adsorption. When the terraces are wide the predominant effects are related to the orientation of the terrace. However, the relation between terrace-step orientation also plays an important role in the behavior of stepped faces.
