The study of surfaces generally belongs to the concept of surface chemistry.
The study of physical and chemical phenomena occurring due to chemical reactions or by the arrangement of molecules is called surface chemistry.
Surface chemistry deals with the study of surfaces of any interface such as solid-liquid, liquid-gas, or solid-gas arrangements.
If any substance or material or component is accumulated on the surface then such a process is called adsorption.
Adsorption has two parts: adsorbate and adsorbent.
Adsorbate is the material or substance which is going to accumulate on the surface whereas adsorbent is the part at which the adsorbate will accumulate.