The book has been divided into two parts first part of in this book is contain fabrication and characterization of nanocatalysis by different technique such as UV, Zeta Potential, XRD, FESEM and TEM technique. Second part of in this book is containing oxidation of organic compounds such as aromatic hydrocarbons, aromatic alcohols and phenols and carbonyl compounds by cerium sulphate and using nanocatalyst under microwave irradiation. In last chapter in this book contain the comparative study the effect of metal ions catalyst and nanocatalyst on the percentage yield of aliphatic, cyclic and aromatic hydrocarbons, aromatic alcohols, phenols, and carbonyl compounds.