本文首次采用胶溶法合成了CeO_2纳米水溶胶、透明的CeO_2纳米有机溶胶、表面包覆DBS的CeO_2纳米粒子，将该粒子在不同温度下进行热处理得到不同粒径的CeO_2纳米晶。

• the transparent organosol of CeO2 nanoparticles and CeO2 nanoparticles coated with DBS have been first prepared by colloidal chemical method, The CeO2 nanoparticles with various particle sizes were obtained by different calcination temperature. For the first time, we obtained the optimum condition of preparing colloid. The prepared samples were deeply studied by XRD.