Direct synthesis of high quality cubic Ia3d mesoporous material under organosilane assisted

作者：Wei Feng; Yang Jing; Gu Fang Na; Gao Ling; Zhu Jian Hua^*

来源：Microporous and Mesoporous Materials, 2010, 130(1-3): 266-273.

DOI：10.1016/j.micromeso.2009.11.019

• Mesoporous silica with Ia3d symmetry
• Phase transition
• Organic VTES additive
• Cationic surfactant
• Adsorption of phenol and phenylalanine

Cubic laid mesoporous silica was synthesized through a novel and effective way for the first time, using cationic surfactant cetyltrimethylammonium bromide (CTAB) and silica as the raw material plus vinyltriethoxysilane (VTES) additive through a phase transition method. The organic additive VTES not only acted as the organic-functionalizing agent in the synthesis, but also influenced the interaction between the cationic surfactant and silica oligomers, which was proven to be crucial for the formation of cubic laid structure. The optimal synthetic conditions were determined to spur the phase transition toward laid structure, including the VTES/(SiO(2) + VTES) molar ratio of 0.176 and the HCl/(SiO(2) + VTES) of 0.24 as well as the aging time of sample (72 h). Moreover, the resulting vinyl-containing MCM-48 exhibited the higher capability than common MCM-48 in gaseous adsorption of phenol and liquid adsorption of phenylalanine (Phe), offering a new candidate for environment protection and pharmaceutical industry.

• 出版日期2010-5
• 单位南京大学