The crystallinity, morphology, size of the CeO2 NPs were analyzed using Powder XRD, Bruker (Germany, model D8) SEM/EDAX (JEOL Model JSM - 6390LV), Size of NPs were analyzed by TEM
(Philips, CM 200) with operating voltages: 20–200 kv resolution:2.4 Å, Zeta potential (Horiba Nanoparticle Analyzer).