Monte Carlo study of adsorption from binary solution on heterogeneous surfaces

Abstract

A three-dimensional model for adsorption from solution on heterogeneous surfaces is proposed. This approach is compared with the results of Monte Carlo simulation for several systems with different sizes of homotatic domains and various values of parameters characterizing the adsorbate–adsorbent and adsorbate–adsorbate interactions. It is demonstrated that the existence of different active centres may change qualitatively the system behaviour. The concept of local isotherm for adsorption from solution is discussed. The influence of patch sizes on the total adsorption is analysed.