Adsorption at Interfaces: Gibbs, Langmuir, and BET Models

This lecture by the instructor covers the fundamental concepts of adsorption at interfaces, focusing on the Gibbs, Langmuir, and BET models. The lecture starts by discussing the challenges in defining an interface for different materials, followed by the Gibbs and Langmuir isotherms. It then delves into the competitive adsorption phenomenon and the considerations for multiple molecules in the gas phase. The lecture also explores monolayers, key definitions in adsorption, and collaborative adsorption using the FFG isotherm. It concludes with a detailed explanation of the BET model for multilayers, including the equilibrium derivation and competitive adsorption scenarios.