A Rapid and Facile Method for Synthesis of TiO2/SBA-15 and Its Photocatalytic Application

作者：Ma Jing; Qiang Liang Sheng^*; Li Han Yang; Tang Xiang Bo

来源：Science of Advanced Materials, 2010, 2(4): 539-544.

DOI：10.1166/sam.2010.1121

• TiO2/SBA-15
• Tetrabutyl Titanate
• Internal Hydrolysis
• RhB
• Photodegradation

Usually, TiO2 is carried out as the photocatalyst. To maximize TiO2 photoactivity, one way is to synthesize the supported materials for TiO2. However, the main drawback of the supported photocatalysts is that they usually show lower activities in comparison with pure TiO2 (P-25). To overcome this drawback, mesostructured silica such as SBA-15, appears to be the most appropriate support due to its high surface area. This work is to develop a rapid and facile method to synthesize SBA-15-supported TiO2. In the experiment, TiO2 was successfully incorporated into the mesostructure of SBA-15 by internal hydrolysis method. The synthesized TiO2/SBA-15 were characterized in detail by X-ray diffraction (XRD), N-2 adsorption-desorption, transmission electron microscopy (TEM) and UV-visible absorption spectra. The structure characteristic measurements revealed that SBA-15 was retained the mesostructure after incorporation of TiO2, and TiO2 was located inside the mesoporous channels in form of small crystals with anatase structure. The photodecomposition of Rhodamine B (RhB) in aqueous medium was selected to evaluate the photocatalysis performance of TiO2/SBA-15. The influence of different amount TiO2 loading in the SBA-15 was also studied. The TiO2/SBA-15 prepared by IH mehtod showed much higher photodegradation ability for RhB than P-25.

• 出版日期2010-12
• 单位哈尔滨工业大学