Synthesis and characterization of Ti-SBA-16 ordered mesoporous silica composite

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• 作者：Shaodian Shen ; Yan Deng ; Guibo Zhu ; Dongsen Mao ; Yuhong Wang ; Guishen Wu ; Jun Li ; XiaoZhen Liu ; Guanzhong Lu and Dongyuan Zhao
• 刊名：Journal of Materials Science
• 出版年：2007
• 出版时间：September, 2007
• 年：2007
• 卷：42
• 期：17
• 页码：7057-7061
• 全文大小：288 KB

文摘

Ti-SBA-16 mesoporous silica with a cubic Im3m structure has been successfully synthesized through prehydrolysis of a silica precursor in the presence of a tri-block copolymer F127 under acidic condition. X-ray diffraction (XRD) shows that the highly ordered mesostructure was maintained even at the high loading of titanium up to 5.5 (bulk molar ratio SiO₂/TiO₂). UV–vis and Raman spectroscopy reveal that the titanium species was highly dispersed in the silica framework with tetrahedral coordinate and octahedral coordinate, respectively. N₂-adsorption data exhibit that the BET surface, pore size and pore volume were maintained with an increase of titanium species loading for this cubic Im3m mesoporous composite. SEM image shows its amorphous morphology. The synthesis of mesoporous TiO₂-containing SBA-16 composite with a cubic Im3m structure will open new applications for catalysts.