| 二元阴阳离子表面活性剂法合成介孔氧化硅囊泡 |
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| 引用本文： | 牟鸣薇,彭策,王颂,金春阳,曹献英,蔡强.二元阴阳离子表面活性剂法合成介孔氧化硅囊泡[J].高等学校化学学报,2013,34(6):1309-1312. |
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| 作者姓名： | 牟鸣薇 彭策 王颂 金春阳 曹献英 蔡强 |
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| 作者单位： | 1. 海南大学材料与化工学院, 海口 570228;
2. 清华大学材料科学与工程系, 北京 100084 |
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| 基金项目： | 国家"九七三"计划项目(批准号: 20131970096)资助. |
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| 摘 要： | 以十二烷基磺酸钠(SDS)和十六烷基三甲基溴化铵(CTAB)为表面活性剂, 在SDS与CTAB的摩尔比为1.0~2.3时, 以正硅酸乙酯(TEOS)为硅源, 在氨水-水体系中于68℃下合成介孔氧化硅囊泡. 通过透射电子显微镜(TEM)、 X射线衍射仪(XRD)、 热重分析仪(TGA)和氮气吸附-脱附实验仪对合成的产物进行表征. 结果表明, 合成的产物为介孔氧化硅囊泡聚集体, 孔径约为4 nm, 样品的Brunauer-Emmett-Teller(BET)比表面积为826 m2/g. 对介孔氧化硅囊泡的形成机理做了初步探讨.
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| 关 键 词： | 阴、 阳离子表面活性剂 介孔材料 氧化硅 囊泡 |
| 收稿时间： | 2013-01-30 |
Synthesis and Characterization of Mesoporous Silica Vesicles Using Cationic-anionic Binary Surfactant as Template |
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| MU Ming-Wei,PENG Ce,WANG Song,JIN Chun-Yang,CAO Xian-Ying,CAI Qiang.Synthesis and Characterization of Mesoporous Silica Vesicles Using Cationic-anionic Binary Surfactant as Template[J].Chemical Research In Chinese Universities,2013,34(6):1309-1312. |
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| Authors: | MU Ming-Wei PENG Ce WANG Song JIN Chun-Yang CAO Xian-Ying CAI Qiang |
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| Institution: | 1. College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China;
2. Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Mesoporous silica vesicles were synthesized using cationic surfactant hexadecyl trimethyl ammonium bromide(CTAB) and anionic surfactants sodium dodecyl sulfonate(SDS) in molar ratios of 1.0-2.3 as templates, tetraethyl orthosilicate(TEOS) as silica source at 68℃ in ammonia solution medium. The samples were characterized by scanning electron microscopy(SEM), small angle X-ray diffraction(SXRD), transmission electron microscopy(TEM), thermo gravimetric analysis(TGA) and nitrogen adsorption-desorption isotherms measurments. The results indicate that the samples are the continue aggregates of mesoporous silica vesicles with diameters of ca. 50 nm. The Brunauer-Emmett-Teller(BET) surface area and nonlocal density functional theory(NLDFT) pore diameter of the samples are 826 m2/g and 4.0 nm, respectively. The formation mechanism of the vesicles was also discussed. |
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| Keywords: | Anion and cation surfactants Mesoporous material Silica Vesicle |
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