| 单分散核-壳结构介孔二氧化硅微球的合成 |
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| 引用本文： | 魏昊,韩路,石琳,屠波,赵东元.单分散核-壳结构介孔二氧化硅微球的合成[J].高等学校化学学报,2011,32(3):503-507. |
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| 作者姓名： | 魏昊 韩路 石琳 屠波 赵东元 |
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| 作者单位： | 复旦大学化学系, 分子催化与创新材料实验室, 先进材料实验室, 上海 200433 |
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| 摘 要： | 在酸性条件下, 采用非离子表面活性剂嵌段共聚物为模板剂, 季铵盐阳离子表面活性剂为共导向剂, 在预先合成的尺寸均一的单分散实心氧化硅微球表面包裹了有序介孔氧化硅层, 进一步通过高温水热处理, 获得了具有良好分散性和均匀尺寸的介孔壳层(孔径7 nm)氧化硅微球(~500 nm). 氧化硅微球外部包裹的介孔壳层具有较大的比表面积(188 m2/g)和孔容(0.23 cm3/g).
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| 关 键 词： | 介孔材料 合成 氧化硅微球 壳核结构 表面活性剂 |
| 收稿时间： | 2010-10-12 |
Synthesis of Monodisperse Silica Microspheres with Solid Core and Mesopore Shell |
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| WEI Hao,HAN Lu,SHI Lin,TU Bo,ZHAO Dong-Yuan.Synthesis of Monodisperse Silica Microspheres with Solid Core and Mesopore Shell[J].Chemical Research In Chinese Universities,2011,32(3):503-507. |
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| Authors: | WEI Hao HAN Lu SHI Lin TU Bo ZHAO Dong-Yuan |
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| Institution: | Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China |
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| Abstract: | Well-dispersed silica microspheres(~500 nm) with solid core and ordered mesopore shell were synthesized by amphiphilic triblock copolymers(Pluronic P123) and quaternary ammonium surfactant(CTAB) as co-templates. The mesoporous silica shell with large surface area(188 m2/g) has mesochannels parallel to the spherical surface. Furthermore, the hydrothermal treatment(~130 ℃) was introduced to enlarge the pore size(~7.3 nm) and pore volume(0.23 cm3/g). |
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| Keywords: | Mesoporous material Silica microsphere Core-shell structure Template |
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