CALORIMETRIC EFFECTS AND TEMPERATURE-DEPENDENCE OF SIMPLE ION ADSORPTION AT OXIDE-ELECTROLYTE INTERFACE - A THEORETICAL-ANALYSIS BASED ON THE TRIPLE-LAYER COMPLEXATION MODEL

A rigorous thermodynamic interpretation based on the triple-layer comp lexation model is given of the experimental heats of adsorption record ed in various types of calorimetric experiments. Also, theoretical exp ressions are developed describing temperature dependence of the measur ed surface charge. Our theoretical description is based on a model of an energetically homogeneous sui-face, i.e., the surface oxygen has id entical adsorption properties. The developed equations are applied to reproduce the temperature dependence of some experimentally measured s urface charge isotherms to prove to what extent the triple-layer model of adsorption on a homogeneous oxide surface is able to reproduce the behavior of the actual adsorption systems.