| 气-液界面二元共沉积法制备三维有序大孔SiO2 |
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| 引用本文： | 宋昌平,刘俊康,倪忠斌,陈明清,刘士荣.气-液界面二元共沉积法制备三维有序大孔SiO2[J].功能材料,2012,43(3):299-302. |
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| 作者姓名： | 宋昌平 刘俊康 倪忠斌 陈明清 刘士荣 |
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| 作者单位： | 江南大学化学与材料工程学院,江苏无锡,214122 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用乳液聚合法制备粒径为229nm的单分散聚苯乙烯(PS)微球,以单分散PS微球和粒径为10nm的硅溶胶为原料,采用蒸发自组装法在气-液界面上二元共沉积,制备了大孔SiO2材料。结果表明,当SiO2体积分数为11%时,大孔SiO2材料呈现有序规整的FCC结构,其填充率为42%,收缩率仅为2%。低温N2吸附表明该材料在大孔孔壁上存在6.4nm左右的介孔,是一种具有大孔/介孔复合孔道结构的功能材料。
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| 关 键 词： | SiO2 三维有序大孔 二元共沉积 气-液界面 |
Fabrication of three-dimensional ordered macroporous SiO_2 by air-water interface binary self-assembly |
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| SONG Chang-ping,LIU Jun-kang,NI Zhong-bin,CHEN Ming-qing,LIU Shi-rong.Fabrication of three-dimensional ordered macroporous SiO_2 by air-water interface binary self-assembly[J].Journal of Functional Materials,2012,43(3):299-302. |
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| Authors: | SONG Chang-ping LIU Jun-kang NI Zhong-bin CHEN Ming-qing LIU Shi-rong |
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| Affiliation: | (School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China) |
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| Abstract: | Monodisperse polystyrene microspheres with the size of 229nm were synthesized by emulsion polymerization technique.We have fabricated three-dimensional ordered macroporous silica with silica sol and PS microspheres by using solvent evaporation method.Scanning electron micrographs(SEM) showed that when the silica volume fraction was 11% the best ordered 3DOM silica macroporous material was fabricated.It had regular close-packed face-centered cubic(fcc) structure.The diameter of macroporores was 219nm corresponding to a shrinkage of 4.3%.The fill rate of this material is 42%.The walls of pores contained the mesoporous structure with a narrow pore size distribution in 6.4nm according to the result of N2 adsorption-desorption. |
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| Keywords: | SiO2 three-dimensional ordered macroporous binary self-assembly air-water interface |
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