multilayer adsorption

Multilayer adsorption occurs when molecules from a fluid (like a gas or liquid) stick to a solid surface in multiple layers rather than just one. Initially, molecules form a single layer directly on the surface. Once that layer is full, additional molecules can attach to the first layer's molecules, creating a second layer, and so on. This process is common in natural and industrial settings, such as activated carbon filtering or catalysis, affecting how substances interact with surfaces. Multilayer adsorption helps explain phenomena like increased capacity for capturing impurities and impacts the design of materials for adsorption-based applications.