Photocatalysis

In the presence of a catalyst, photocatalysis is the acceleration of a photoreaction. Light is absorbed by an adsorption substrate during catalysed photolysis. The capacity of the catalyst to produce electron-hole pairs, which produce free radicals capable of secondary reactions, is what determines the photocatalytic activity in photogenerated catalysis. Water electrolysis using titanium dioxide was discovered, which allowed for its practical application (TiO₂). Over the past ten years, certain photoactive catalysts have been developed, including TiO₂ and ZnO nanorods. Due to their band structure, the majority of them suffer from the limitation that they can only function under UV irradiation. In order to solve this issue, various other photocatalysts, such as a graphene-ZnO nanocompound, have been developed recently.