Using a composite surfactants template (P123 and CTAB) as structure directing agents, ordered mesoporous TiO2 was synthesized via supra-molecular self-assembly route from industrial TiOSO4 solution.The hydrolysis and poly condensation rate of aqueous TiOSO4 solution was controlled through controlling the pH of solution , and the ordered mesoporous structure was obtained by calcinations after template removed. In high polar aqueous solution, the excluding interactions of non polar group for CTAB was reduced by P123's insertion, and the mesoporous structure was formed as a result of self assembly between composite surfactants and precursor of TiO2. The ordered mesoporous TiO2 powder was characterized by SEM, TEM, ED, XRD, and N2 isothermal absorption and desorption methods. The results showed that ordered mesoporous TiO2 is highly ordered and has a narrow hexagonal packed structure, with average pore diameter of 3.0?nm, surface area of 132.6?m2/g, porosity of 36% and pore volume of 0.19 cm3/g. The pore wall was partially crystallized with an anatase phase, crystal size was grown up to 14.22 nm after calcinations at 450?℃, basic grain size ranging from 30 to 70?nm, and owing to congregation they display larger analogous spherical particles.
