以钛酸丁酯(TBOT)为前驱物、乙醇(EtOH)为溶剂、水为反应剂、盐酸为催化剂,采用溶胶-凝胶技术制备了无色透明TiO2溶胶和纳米TiO2粉体.运用正交试验设计和极差分析,优化了制备无色透明TiO2溶胶的工艺.利用紫外-可见光谱(UV-Vis)分析了溶胶的光学性能,傅里叶变换红外光谱(FT-IR)表征了凝胶的分子结构,热重分析(TGA)、差示扫描量热仪(DSC)测试了TiO2的热性能,X-射线衍射(XRD)研究了TiO2的晶型及其纳米尺寸.结果表明:无色透明TiO2溶胶在可见光区域光吸收极低,在紫外光区域吸收极强,可作抗紫外剂等；TiO2热稳定性较好,能耐300℃以上的高温,可做耐热填料；所制备TiO2具有锐钛矿相晶体结构,颗粒尺寸约为35nm.
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