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

Feng Jiao Chen; Zhao Sheng Bu; Guo Wei Zhou

doi:10.4028/www.scientific.net/AMR.918.17

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

Abstract:

Mesoporous TiO₂ with high surface area (S_BET) 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. S_BET and pore size of the materials were adjusted by using different amount of TBT. S_BET 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 S_BET 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 S_BET are important for both fundamental and technological viewpoints.