A Facile Route to Synthesizing Functionalized Mesoporous SBA-15 Materials with Platelet Morphology and Short Mesochannels

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• 作者：Shih-Yuan Chen ; Chih-Yuan Tang ; Wei-Tsung Chuang ; Jey-Jau Lee ; Yi-Ling Tsai ; Jerry C. C. Chan ; Ching-Yen Lin ; Yu-Cheng Liu ; Soofin Cheng
• 刊名：Chemistry of Materials
• 出版年：2008
• 出版时间：June 24, 2008
• 年：2008
• 卷：20
• 期：12
• 页码：3906 - 3916
• 全文大小：3296K
• 年卷期：v.20,no.12(June 24, 2008)
• ISSN：1520-5002

文摘

A facile synthesis route for preparing SBA-15 silica of platelet shape and very short mesochannels (150−350 nm) was developed by introducing a small amount of Zr(IV) ions in the synthesis solution. The synthesis route can be easily extended to prepare platelet SBA-15 materials with various organic functional groups up to 1.87 mmol/g loading in one pot. In situ XRD and freeze-fracture replication TEM were found to be powerful techniques for studying the self-assembly processes. The platelet SBA-15 with short mesochannels in 150−350 nm was formed because of the fast self-assembly rate of P123 micelles and TEOS accelerated by the Zr(IV) ions in the synthesis solution. The platelet SBA-15 materials are superior to the conventional SBA-15 of rod or fiber morphologies in facilitating molecular diffusion and less possibility of pore blockage when used in the sorption or reactions of bulky molecules.