Investigation on Technological Process of Preparation of TiO2 Nanocrystal for Rutile Crystal Growth
晶体生长用TiO2纳米晶的改良工艺研究

TiO2 nanocrystal was produced by calcining at high temperature using TiOSO4.(NH4)2 SO4.H2O (ATS) and modified ATS, respectively , as raw material for synthetic rutile crystal growth. The phases of raw material and nanocrystal were measured by means of XRD and the appearance of nanocrystal was analyzed by means of SEM. As a result, it is shown that there are great difference between two kinds of nanocrystal as for shape and properties, especially TiO2 nanocrystal calcined from modified ATS is much more dispersive and homogeneous than that from ATS, although the raw materials of them have similar structure. The influence of the calcination temperature, the heating period, as well as rapid heating or slow heating etc, on the phase and appearance of the nanocrystal was also investigated. Moreover, the good technological process to produce a great quantity of TiO2 nanocrystal was presented.