Adsorption of inorganic ions on bismuth from constant ionic strength solutions in 2-butanol

Abstract

The adsorption of Cl −, Br −, I − and SCN − ions on a drop-shaped bismuth electrode from solutions in 2-butanol has been investigated by means of differential capacity measurements. The ionic charge due to the specific adsorption was calculated using the Hurwitz-Parsons-Dutkiewicz method. The results were analysed using the virial adsorption isotherm and the classical Grahame-Parsons inner layer model. It was confirmed that the standard Gibbs energy of adsorption of ions in alcohols can be correlated with quantum-chemical indices of reactivity.