Abstract: 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 4-6nm, 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.

Key words: TiO₂ aerogel, monolithic materials, preparation, gelation process