V adsorption isotherms

V adsorption isotherms describe how much volume of a gas or vapor a material (adsorbent) can hold at a constant temperature as pressure or concentration changes. It shows the relationship between the amount of substance that sticks to the surface and the pressure or concentration, helping us understand how well a material can capture or remove gases. These isotherms are useful in designing filters, catalysts, and storage systems by revealing the material’s capacity and behavior during adsorption processes.