Sol -Gel Process Coprecipitation Method: The coprecipitation method involves the precipitation of metal in the form of hydroxide from a salt precursor with the help of a base solvent [18,19]. Coprecipitation involves the occurrence of nucleation, growth, coarsening, or agglomeration process [20]. There are three mechanisms of coprecipitation: inclusion, Adsorbent, Occlusion [21]. It is process in which soluble compound are done by solution by precipitate. It helps to hold required cation close together in reaction medium. It is process in which solid is precipitated from a solution which containing another ion.