无机化学学报

甲基官能化介孔固相微萃取涂层的合成与表征

Synthesis and Characterization of Methyl-Functionalized Mesoporous Silica Using as Solid-Phase Microextraction Fiber Coating

作者	单位
饶红红	西北师范大学化学化工学院，兰州 730070
杜新贞	西北师范大学化学化工学院，兰州 730070 省部共建生态环境相关高分子材料教育部重点实验室，兰州 730070
王雪梅	西北师范大学化学化工学院，兰州 730070
薛林科	西北师范大学化学化工学院，兰州 730070

摘要: 采用一步法在碱性条件下以十六烷基三甲基溴化铵(CTAB)为模板剂，用正硅酸乙酯(TEOS)和甲基三甲氧基硅烷(MTMS)直接缩合制备了甲基改性的无机/有机介孔复合材料(Me-MCM-41)，并用红外光谱(FTIR)、小角X射线衍射(SAXRD)、热重分析(TGA)、透射电镜(TEM)和氮气吸附-脱附等方法对样品进行了表征。结果表明，甲基成功键合至介孔材料孔道表面形成了无机/有机介孔复合体, 该复合体不仅保持了MCM-41高度有序的的二维六方孔道结构，而且还具有较强的疏水性、较高的热稳定性，以及较大的比表面积、孔容和孔径。该材料作为固相微萃取的涂层与高效液相色谱联用对邻苯二甲酸二丁酯(DBP)具有较高的萃取效率。

关键词: 介孔二氧化硅无机/有机介孔复合材料合成与表征固相微萃取

基金项目:

Abstract: A single-step synthesis of highly ordered methyl-functionalized MCM-41(Me-MCM-41) mesoporous silica was performed by using cetyltrimethylammonium bromide (CTAB) as the template and tetraethyl orthosilicate (TEOS) as the silica source under alkaline conditions. The samples were characterized by FTIR, SAXRD, TGA, TEM and N₂ adsorption-desorption. The results showed that the organic-inorganic hybrid materials still preserve a desirable two-dimensional P6mm hexagonal structure and have strong hydrophobicity，high thermal stability, large specific surface area and pore volume. Higher extraction efficiency of dibutyl phthalate (DBP) is obtained using Me-MCM-41 as solid-phase microextraction fiber coating.

Keywords: mesoporous silicas organic-inorganic hybrid materials synthesis and characterization solid-phase microextraction

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饶红红,杜新贞,王雪梅,薛林科.甲基官能化介孔固相微萃取涂层的合成与表征[J].无机化学学报,2010,26(3):483-488.

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