| 阳离子和两性混合表面活性剂为模板合成三维六方介孔二氧化硅(英文) |
| Synthesis of Mesoporous Silica with a Three-Dimensional Hexagonal Ordered Structure Using Cationic and Amphoteric Mixed Surfactants |
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| 摘要: 用阳离子表面活性剂CnTAB(n=12，14，16，18)和两性生物表面活性剂SDG以8∶2的摩尔比混合作为模板剂，在酸性条件下晶化，碱性条件下老化合成了三维有序介孔二氧化硅。合成的产物用XRD、SEM、TEM和N2吸附进行表征。结果表明，在不同链长的表面活性剂CnTAB(n=12，14，16，18)中，C14TAB与SDG混合所得样品C14DG的有序度最好。而C16TAB和C18TAB与SDG混合所得样品的孔径约为9 nm。两性表面活性剂SDG对产物的形貌和三维六方结构都有影响。 |
| 关键词: 介孔二氧化硅 两性表面活性剂SDG 阳离子表面活性剂CnTMBr 三维六方 |
| 基金项目: |
| Abstract: Ordered mesoporous silica with a 3D hexagonal structure was synthesized using mixed cationic CnTMBr (n=12, 14, 16, 18) and amphoteric biological surfactants sodium N-dodecyl glycine (SDG) at a molar ratio of 8∶2. Synthesis proceeded with hydrolysis and condensation of tetraethyl orthosilicate (TEOS) under acidic conditions, followed by aging in an alkaline medium. The synthesized products were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen sorption analysis. Mesoporous silica with pore diameter of about 9 nm was obtained using C16TMBr or C18TMBr and SDG, as mixed templates. The presence of the amphoteric biological surfactant SDG was responsible for formation of the 3D hexagonal structure. |
| Keywords: mesoporous silica amphoteric surfactants SDG cationic CnTMBr 3D hexagonal structure |
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| 张剑波,杨宇翔,郑九丽,袁宏明,曹 磊,陈 诚.阳离子和两性混合表面活性剂为模板合成三维六方介孔二氧化硅(英文)[J].无机化学学报,2011,27(9):1817-1829. |
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