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2008 1
35 177 · 17 ·
1 2
(1 510006 2 510632)
[ ]SBA-15 MSU-1
BETXRDFT-IRDRS
30 % TiO /SBA-15-700
2
0.0637 min-1P-25(0.0297 min-1)MSU-1
TiO /SBA-15
2
[]SBA-15 MSU-1
Preparation of Supported TiO2 Photocatalyst by Molecular Sieves of SBA-15 and
MSU-1 and Its Photocatalysis Properites Research
1 2
Liu Zhaoqing , Yang Jun
(1. College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006
2. Department of Chemistry, Jinan University, Guangzhou 510632, China)
Abstract: Supported nanocrystalline titanium dioxide (TiO ) was prepared by a post-synthesis step via Ti-alkoxide hydrolysis through
2
the use of mesoporous SBA-15 and MSU-1 silica. The samples were characterized by X-ray diffraction, nitrogen adsorption, fourier
transform infrared spectroscopy and diffusive reflective UV–vis spectroscopy, and the photodegradation of MB was performed in order to
evaluate the photocatalytic activity of prepared titania/silica materials. Experiments results indicated that catalyst 30 % TiO2/SBA-15-700
had the highest rate constant of 0.0637 min−1, which was much higher than that of P-25 (0.0297 min−1). But the catalysts TiO /MSU-1 did
2
not show high photodegradation ability, which were much lower than that of 30 % TiO2/SBA-15-700 sample.
Keywords: nanocry
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