The structure and morphology of Y 2O 3 nanocrystals were characterized by X ray powder diffraction (XRD), transmission electron microscope (TEM) and BET specific surface area absorption metor.

• 用 X射线粉末衍射 ( XRD) ,透射电子显微镜 ( TEM)及 BET比表面吸附对 Y2 O3纳米晶的粒径和形貌进行了表征。