Hydrothermal Synthesis and Photocatalytic Activity of Mesoporouse TiO<sub>2</sub> with High Surface Area and Different Pore Size

Abstract

Mesoporous TiO2with 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.SBETand pore size of the materials were adjusted by using different amount of TBT.SBETwas 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 highestSBETof 92.72 m2g1. 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 TiO2with changing mesopores andSBETare important for both fundamental and technological viewpoints.