中文摘要：

研究了TiO2气凝胶形成过程中制备条件和凝胶化过程对块状TiO2气凝胶宏观性质的影响,结果表明所得气凝胶是由粒度约为4～6nm的TiO2非晶态微粒连结而成的具有均匀网络结构的多孔性超轻量级块状材料,通过严格控制制备过程中凝胶化过程的条件及状态,可以获得不同密度不同品质的TiO2气凝胶.

英文摘要：

Monolithic TiO2 aerogels were prepared by the process of hydrolysis and condensation of tetrabutyl titanate as precursor, and following by supercritical drying. The effect of the preparing conditions and gelation process on macroscopic properties of monolithic TiO2 aerogels was studied. The results indicate that the final aerogels, which consist of amorphous TiO2 with particle sizes of about 4 similar to 6nm, are uniform continuous network structural superlight monolithic materials with high porosity. The monolithic TiO2 aerogels with different densities and properties can be prepared by controlling the conditions of gelation process vigorously.