+An **adsorbent** is a solid material that captures and holds molecules from a gas or liquid onto its surface, a process known as [adsorption](/wiki/adsorption). These porous substances, such as [activated carbon](/wiki/activated_carbon), are widely used in purification, separation, and storage applications.
+## See also
+- [Adsorption](/wiki/adsorption)
+- [Desiccant](/wiki/desiccant)
+- [Porous Material](/wiki/porous_material)