Cerium-doped Zinc Oxide nanoparticles were prepared with co-precipitation method. X-Ray diffraction (XRD) analysis shows sharp peaks conforming the crystalline nature of prepared particles. Crystallite size was found from XRD peaks. A Field Emission Scanning Electron Microscope (FESEM) was used to see the particles and hexagonal shape. Spectroscopic properties were studied using a Fourier Transform-Infra Red (FT-IR) spectrometer and Raman spectrometer. Optical properties were studied using a Diffuse Reflectance Ultraviolet Visible (DRS UV–VIS), spectrophotometer. Band gap of doped particles reduces as doping concentration increases. Reduced band gap of Cerium doped particles makes them a good catalyst. There are many organic dyes which are used as coloring agents by industries like textile, printing, etc. These industries release harm full pollutants into water bodies, which effect human and aquatic life. Prepared Cerium-doped ZnO nanoparticles have proved to photodegrade Methylene Blue. Undoped ZnO nanoparticles decolorized the solution in 210 min with 81.93% efficiency. Ce (0.03 wt%) doped ZnO nanoparticles decolorized the solution in 120 min with 92.62% efficiency.

采用共沉淀法制备了铈掺杂的氧化锌纳米粒子。X射线衍射（XRD）分析显示出尖锐的峰，与所制备颗粒的晶体性质相符。从XRD峰发现微晶尺寸。使用场发射扫描电子显微镜（FESEM）观察颗粒和六边形。使用傅里叶变换红外（FT-IR）光谱仪和拉曼光谱仪研究光谱性质。使用漫反射紫外可见光（DRS UV-VIS）分光光度计研究了光学性能。掺杂粒子的带隙随着掺杂浓度的增加而减小。铈掺杂颗粒的带隙减小使它们成为良好的催化剂。有许多有机染料被纺织，印刷等行业用作着色剂。这些行业将有害的完全污染物释放到水体中，从而影响人类和水生生物。已证明制备的铈掺杂的ZnO纳米颗粒可以光降解亚甲基蓝。未掺杂的ZnO纳米粒子在210分钟内使溶液脱色，效率为81.93％。Ce（0.03 wt％）掺杂的ZnO纳米粒子在120分钟内使溶液脱色，效率为92.62％。