A photoreactor is a type of chemical reactor that interacts photons, a photocatalyst, and reactants while also collecting the reaction products that result from physicochemical reactions. It can work in a range of temperature and pressure settings and take on numerous forms and behaviours. Establishing a photoreactor's kind, mode of operation, size, and ideal operating conditions is known as design. There are two basic types of photoreactors: batch and plug flow. In the one, mixing of the reacting mixture is encouraged as much as possible in order to assume a perfectly mixed reactor, whereas in the second, mixing is hampered in order to assume a properly segregated reactor