四氯化钛络合法制备单分散纳米二氧化钛

以四氯化钛为原料，通过和三乙醇胺反应形成可溶性络合物，在１４５℃陈化反应，制得单分散性较好的二氧化钛颗粒．用ＴＥＭ和ＸＲＤ测定了颗粒的晶型和形貌．颗粒的大小可通过改变陈化液的ｐＨ值进行调节．讨论了钛可溶性络合物的形成和水解过程，测定了该络合物的紫外吸收特性．

Preparation of Monodispersed Nanometer Titanium Dioxide by the Complex from Titanium Tetrachloride

Monodispersed titanium dioxide nanoparticles were prepared by the hydrolysis of the titanium complex at 145℃ , the complex was obtained by the reaction of TiCl₄, with tri- ethanolamine. The crystalline phase and morphology of the nanoparticles were characterized by means of TEM and XRD techniques. The sizes of the particles can be regulated by changing pH values of the complex solution. The UV spectra of the complex solution were measured. The formation and hydrolysis of the complex were discussed.