球形纳米二氧化钛的制备

Preparation of spherical nano titanium dioxide

采用水热法,以钛酸丁酯为钛源,通过控制反应温度、反应时间和加料顺序,制备出平均粒径范围在12nm^50nm的球形TiO_2颗粒。通过X射线衍射(XRD)和透射电镜(TEM)对所制备的TiO_2进行了表征。研究结果表明,球形纳米二氧化钛的粒径随反应温度的升高和反应时间的延长而增大;填料顺序对粒径几乎没有影响。

Hydrothermal method was used to prepare spherical nano TiO_2 particles,and butyl titanate was taken as titanium source.The spherical TiO2 particles with an average particle size range of 12 nm-50 nm were prepared by controlling the reaction temperature,reaction time and order of addition.In addition,prepared TiO2 was characterized by X ray diffraction（XRD）and transmission electron microscopy（TEM）.The results show that the particle size of the spherical nano titanium dioxide increases with the increase of the reaction temperature and the reaction time.The order of the filler has almost no influence on the particle size.