Synthesis of CeO2 Spherical Fine Particles by Homogeneous Precipitation Method with Polyethylene Glycol

Abstract CeO2(IV) fine particles were prepared by heating a polyethylene glycol solution of Ce(NO3)3·6H2O at 383 K for 3 h. When a polyethylene glycol whose molecular weight was 7500 or 20000 was used for the preparation, the obtained CeO2 particles were almost monodispersed.