中文摘要：

通过过氧化途径，在低温（100℃）且不使用模板和有机溶剂的条件下，成功制备了具有良好荧光性能的三氧化钼（MoO2）纳米带水溶胶．利用X射线衍射仪（XRD）、透射电子显微镜（TEM）、高分辨透射电子显微镜（HRTEM）、荧光光谱仪、荧光显微镜等表征手段对所制备溶胶的结构及性能进行了表征．结果显示，溶胶是由长度约为100gm，宽度为50nm到100nm，厚度小于10nm的M003纳米带组成．所制备的溶胶烘干后可以得到大面积的MoO3纳米带薄膜，薄膜具有很好的韧性．荧光光谱图及荧光显微镜照片显示，纳米带溶胶及干燥后所得到的自支撑（freestanding）纳米带薄膜均具有良好的荧光性能，表明其在光学成像、传感及LED等方面具有很好的应用前景．

英文摘要：

Colloidal molybdenum trioxide （MoOa） nanobelts aqueous sols with high photoluminescence performance were successfully synthesized at low temperature （100~C） without assistance of any organics and templates. X-ray diffraction （XRD）, high-resolution transmission electron microscopy （HRTEM）, Fluorescence spectrameter and Fluorescence Microscope were used to characterize the structures and the properties of the as-prepared MoOa sols. The results revealed that the MoOa aqueous sol prepared is composed of a large number of colloidal MoOs nanobelts. The length of the nanobelts is about 100 /~m, while the width is about 50--100 nm and the thickness is less than 10 nm. Large area free-standing MoOa nanobehs film with good toughness were obtained when the colloidal sols was dried . Its fluorescence properties were characterized by Fluorescence Microscope. The as-prepared MoOa nanobehs sols and free-standing MoOa nanobelts film both display high photoluminescence performance, which indicates their potential uses in fluorescence imaging, sensing and LED.