In this manuscript detailed review was done on the synthesis, characterization and properties of two widely used materials, one is wide band gap semiconductors and second is ferrite nanoparticles for photocatlytic activities and dye degradation. The water pollution due to toxic dyes used in most of the textile industries is a big issue which need to be addressed and this manuscript deals with the solution to the problem. The synthesis of nanoparticles of individual material and their composite is explained in the manuscript. The modification in the properties of the composite is also explained.