Photocatalysis

A photoreaction is sped up through photocatalysis when a catalyst is present. An adsorbed substrate receives light during catalysed photolysis. In photogenerated catalysis, the photocatalytic activity is dependent on the catalyst's capacity to produce electron-hole pairs, which result in free radicals with the ability to carry out secondary reactions. Because of the discovery of water electrolysis using titanium dioxide, it can now be used in practical applications. Over the past ten years, a few photoactive catalysts have been developed, including nanorods of TiO2 and ZnO. As a result of their band structure, the majority of them suffer from the limitation that they can only operate in UV light. In order to solve this issue, various other photocatalysts, such as a nanocompound made of graphene and zinc oxide, have been developed recently.