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首页> 外文期刊>Journal of Materials Science >Shape-selective synthesis of CeO2 via an EDTA-assisted route
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Shape-selective synthesis of CeO2 via an EDTA-assisted route

机译：通过EDTA辅助路线选择性合成CeO2

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Nanoparticles and sub-microrods of cubic CeO2 were selectively prepared via an ethylendiamine tetraacetate (EDTA)-assisted route. They were characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and infrared (IR) techniques. Controlling the reaction process, we obtained CeO2 with different shapes. Sub-microrods were formed via an incomplete reaction while uniform nanoparticles were formed through a complete reaction between NaClO3 and Ce-EDTA complexes. The addition of EDTA was critical to obtain CeO2 sub-microrods and nanoparticles. Other experimental conditions, such as EDTA/Ce3+ molar ratio and the reaction time were of importance in the final product morphology. A possible formation mechanism of CeO2 was discussed.
机译：通过乙二胺四乙酸（EDTA）辅助路线选择性地制备了立方CeO2的纳米颗粒和亚微棒。它们的特征在于透射电子显微镜（TEM），X射线粉末衍射（XRD）和红外（IR）技术。控制反应过程，我们获得了不同形状的CeO2。亚微棒是通过不完全反应形成的，而均匀的纳米颗粒是通过NaClO3与Ce-EDTA络合物之间的完全反应形成的。 EDTA的添加对于获得CeO2亚微棒和纳米颗粒至关重要。其他实验条件，例如EDTA / Ce3 +摩尔比和反应时间，对最终产物的形貌也很重要。讨论了CeO2的可能形成机理。

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