水热晶化法制备CeO2纳米晶

Preparation of Nanocrystalline CeO_2 by Hydrothermal Crystallization

摘要:

用水热晶化法制备了Ceo2纳米晶。X射线衍射（XRD）分析表明，所合成的CeO2纳米晶属于立方晶系，空间群为O^5H-FM3M。透射电镜（TEM）分析表明，CeO2纳米粒子呈球形，平均粒径小于100nm。实验发现，水热处理温度升高，CeO2粒子中含水量减少。CeO2纳米晶的相对密度随水热处理温度的升高而略有增大。

Abstract:

Nanocrystalline CeO2 was prepared by hydrothermal crystallization method. XRD analysis indicates that the structure of the synthesized CeO2 is cubic with space group O5H FM3M. TEM photos reveals that nanocrystalline CeO2 is spherical in shape with a mean particle size of less than 100 nm. It was found that with increase of hydrothermal treatment temperatures the relative density of CeO2 nanocrystalline increased.