稀土纳米复合氧化物RE_2O_3∶Eu(RE=Y,Gd)的制备及特性

Synthesis and Optical Properties of Nanosized Rare Earth Composite Oxides RE_2O_3∶Eu (RE=Y,Gd)

以甘氨酸辅助的燃烧法和非晶态稀土DTPA配合物前驱体热分解法制备了Y2 O3 ∶Eu和Gd2 O3 ∶Eu纳米材料。X射线衍射表明燃烧法和配合物前驱体热分解法制备的纳米Y2 O3 ∶Eu均为立方相 ,而Gd2 O3 ∶Eu纳米材料则随制备条件不同可得到立方相或单斜相两种产物 ,发射光谱证实了这一结论。通过透射电子显微镜、扫描电子显微镜对不同方法制备的纳米材料的尺寸。

Nanosized Y 2O 3∶Eu and Gd 2O 3∶Eu materials were synthesized by glycine assistant combustion method and thermal decomposition of amorphous complex precursors. XRD patterns show that Y 2O 3∶Eu is cubic and whether Gd 2O 3∶Eu can be cubic or monoclinic depends on the different decomposition temperatures, which also consisted with the luminescent spectra. The size and morphology of the nanoparticles were characterized by TEM and SEM.