以正硅酸乙酯(TEOS)为模板,Ce(SO4)2·4H2O和NaOH为原料,在聚乙烯醇(PVA)的分散和保护作用下制备纳米CeO2粉体材料.采用傅立叶变换红外光谱仪、X射线衍射仪、差热-热重联用分析仪、扫描电镜、紫外-可见分光光度计和紫外发射光谱仪分别对所制备的产物进行表征.结果表明:所制备的CeO2粒径为15nm,热稳定性好,属于萤石结构,分散性好,对紫外光具有较好的吸收,对可见光具有较好的透明性,纳米CeO2粉体的纯度大于99.5%.该制备方法具有工艺简单、污染少、粒径小和操作可控等优点.
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