Abstract In this work, cerium dioxide nanoparticles (CeNPs) were synthesized by thermal decomposition of cerium oxalate decahydrate Ce2(C2O4)3·10H2O. Although a large amount of water was removed along with CO2, the product of decomposition retained the shape of the precursor crystal, i.e. a pseudomorph formed. The Ce2(C2O4)3·10H2O precursor crystals were of plate-like shape; this shape was inherited by CeO2 formed upon decomposition of the precursor. CeO2 plates with a thickness of less than 15 µm were transparent to visible light. X-ray diffraction analysis, transmission electron microscopy and specific surface area measurements indicated that the plates consisted of CeNPs 4–6 nm in size. The influence of the annealing temperature on the growth of crystallites of the pseudomorph was studied. Fast coarsening of the crystallites started at a temperature of 500 °C.

中文翻译：

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具有从草酸盐前体继承的形状的氧化铈纳米颗粒团聚体的合成和结构表征

摘要 本研究通过草酸铈十水合Ce2(C2O4)3·10H2O热分解合成二氧化铈纳米颗粒(CeNPs)。尽管大量水与CO 2 一起被去除，但分解产物保留了前体晶体的形状，即形成了假晶型物。Ce2(C2O4)3·10H2O前驱体晶体呈片状；这种形状由前体分解时形成的 CeO2 继承。厚度小于 15 µm 的 CeO2 板对可见光是透明的。X 射线衍射分析、透射电子显微镜和比表面积测量表明，这些板由 4-6 nm 的 CeNPs 组成。研究了退火温度对假晶型微晶生长的影响。