Adsorption of n-pentanol from KPF6 aqueous solution on the (100) and (110) faces of Ag single crystal electrodes

The potential dependence of the adsorption of n-pentanol (NP) on the (100) and (110) faces of Ag single crystal electrodes from aqueous KPF6 solutions has been studied at 10 mV s(-1) potential scan rate by measuring the impedance both at constant frequency (f) and by sweeping f from 11 kHz to 0.1 Hz. The adsorption of NP has been found to be strongly dependent on crystal orientation. The results have been compared with those obtained on Ag(lll) with the same kind of single crystal preparation, as well as with Ag(100) electrolytically grown in a Teflon capillary [A. Popov, O. Velev, T. Vitanov, J. Electroanal. Chem. 256 (1988) 405]. (C) 2001 Elsevier Science B.V. All rights reserved.