Photocatalysis

Photocatalyst is a branch of chemistry which deals with chemical reactions taking place in the presence of light and a photocatalyst. A photocatalyst is a semiconductor, which enhances the rate of reaction by its presence. Photocatalysis has a wide range of applications like antibacterial, deodorizing, air purifying, antifogging, self cleaning, water purification, etc. Superhydrophilicity plays an important role in some of these applications. Photocatalysis is a green chemical pathway and therefore, it is the need of the day. Water is the basic necessity of human beings, animals, and plants. With the ever increasing population, the demand of water is increasing day by day. There is an urgent need to purify water. Many processes have been used to do this but photocatalysis is widely used in wastewater treatment and plays an important role in water remediation.