The synthesis process of ceria involved taking 2 grams of Polyethylene glycol (PEG 6000), C2H6O2 in 200 ml deionized (DI) water to which 4 grams of Cerium trichloride (CeCl3. 7H2O) to male 1:2 ratio of PEG and CeCl3. This was followed by continuous stirring for 3 hrs till a clear solution was obtained. NaOH was further added to the solution dropwise to make the pH 9. The mixture was then put in an autoclave set at 150 o C for 2 hrs. After cooling, the solution was centrifuged at 4000rpm for 10 minutes. The extract was collected in a Petri dish and dried in a hot air oven at 60 o C for 10 hrs. The compound was then manually pulverized and calcined at 400 o C for 2 hrs to get the final synthesized. The Ce-doped ZnO nanoparticles were synthesized through the sol-gel method using a mixture of zinc nitrate, Cesium Chloride, urea, ethanol, and DI water . All the analytical grade reagents were received from Merck Pvt. Ltd without further purification. The characterizations were done using XRD (Proto A-XRD), FESEM (Zeiss, Germany) UV-Vis spectrometer (UV 3600 Plus, Shimadzu, Japan and Photoluminescence spectrometer (Fluromax-4, Horiba Scientific, USA) and PSA (Particle size Analyzer)