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Hydrothermal Synthesis and Photocatalytic Activity of Mesoporouse TiO2 with High Surface Area and Different Pore Size

Mesoporous TiO2 with high surface area (SBET) and different pore size was successfully fabricated via hydrothermal method using cetyltrimethylammonium bromide and PEO-PPO-PEO as the structure-directing agents, and tetrabutyl titanate (TBT) as titanium source. SBET and pore size of the materials were adjusted by using different amount of TBT. SBET was increased as TBT changing from 0.5 g to 1.0 g, and then dropped as 2.0 g TBT added. Among as-prepared samples (PC), PC-1.0 showed the highest SBET of 92.72 m2 g1. With the increase amount of TBT, pore size increased from 10.36 nm to 12.72 nm. The phtocatalysis study showed that PC-1.0 had the highest percent degradation of 99.6 %. We believed that the design and synthesis of mesoporous TiO2 with changing mesopores and SBET are important for both fundamental and technological viewpoints.