Using industrial titanyl sulfate solution as Ti source, the precursor of mesoporous TiO2 was synthesized via supra-molecular self-assembly route under composite templates (CTAB/P123), which induced hydrolysis and condensation of titanium. Mesoporous TiO2 was obtained after template removal by ozone oxidation, multiple extraction and multi-step calcinations. The samples were characterized by XRD, particle size distribution, N2 absorption and desorption method and FT-IR. The precursor, intermediate and product were all anatase mesostructure, with high specific surface area and hexagonal arrangement. The total titania content and crystallization were increased going with template removal, and mesoporous TiO2 had a narrow pore size distribution, with SBET of 281.5m2/g, average pore diameter of 3.23nm. Catalysis performance of mesoporous TiO2 was strengthened by specific surface area increase, anatase crystal improvement and small amount of SO42- absorption and bonding. And results showed TiO2 samples with high activity on photocatalytic oxidation of methylene blue and esterification for ethyl acetate.
