Energy spectrometer and atomic absorption spectrum (AAS) were used to determine their compositions, and Scanning electron microscope (SEM) , Transmission electron microscopic (TEM) were used to analysis the appearance of the samples.

• 用原子吸收分光度法和能谱确定样品的组成。 扫描电子显示镜(SEM)和透射电子显微镜(TEM)分析了样品的表面形貌及粒径特征。