| SiO2气凝胶常压制备、表面结构与吸附性质 |
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| 引用本文： | 张志华,倪星元,陈世文,周斌,沈军,吴广明,王孝利,吴越华.SiO2气凝胶常压制备、表面结构与吸附性质[J].原子能科学技术,2005,39(6):498-502. |
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| 作者姓名： | 张志华 倪星元 陈世文 周斌 沈军 吴广明 王孝利 吴越华 |
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| 作者单位： | 同济大学波耳固体物理研究所,上海,200092 |
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| 基金项目： | 国家自然科学基金重点基金资助项目（20133040）;国家高技术“863”计划资助项目（2003AA84ts03）;上海市纳米科技与产业发展促进中心资助项目（0352nm056,0216nm035,0352nm022）;上海市自然科学基金项目（02ZE14101）;上海市科委中法合作项目（02SL001）;上海市重点学科建设项目;教育部军品配套项目;教育部跨世纪优秀人才计划资助项目 |
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| 摘 要： | 采用溶胶-凝胶技术,以多聚硅（E-40）为源,通过表面修饰工艺,在常压条件下制备了SiO2气凝胶.采用扫描电镜、13C和29Si核磁共振谱以及孔径分布仪对SiO2气凝胶的微结构进行了表征,并用微量电子真空吸附天平对SiO2气凝胶的吸附特性进行了研究.结果表明：SiO2气凝胶具有纳米多孔结构、较好的疏水和亲水可调性,是一种极好的高吸附材料.
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| 关 键 词： | SiO2气凝胶 常压干燥 表面结构 吸附特性 |
| 文章编号： | 1000-6931（2005）06-0498-05 |
| 收稿时间： | 2004-12-21 |
| 修稿时间： | 2004-12-212005-02-21 |
Ambient Pressure Preparation, Surface Structure and Adsorption Properties of Silica Aerogels |
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| ZHANG Zhi-hua,NI Xing-yuan,CHEN Shi-wen,ZHOU Bin,SHEN Jun,WU Guang-ming,WANG Xiao-li,WU Yue-hua.Ambient Pressure Preparation, Surface Structure and Adsorption Properties of Silica Aerogels[J].Atomic Energy Science and Technology,2005,39(6):498-502. |
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| Authors: | ZHANG Zhi-hua NI Xing-yuan CHEN Shi-wen ZHOU Bin SHEN Jun WU Guang-ming WANG Xiao-li WU Yue-hua |
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| Affiliation: | Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China |
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| Abstract: | A method to prepare silica aerogels is described.Polyethoxydisiloxanes(E-40) was used as silicon source and silica aerogels dried at ambient pressure were prepared via sol-gel process and surface modification.Scanning electronic microscopy(SEM),~(13)C,~(29)Si nuclear magnetic resonance(NMR) spectra and pore size distribution measurement were used to characterize the morphology and pore structure of the silica aerogels.Super-micro electron balance in vacuum was used to determine the adsorption capacities of the silica aerogels.The results show that the silica aerogels with nano-(porous) structure,good adsorption properties,and adjustable hydrophobic and hydrophilic property are suitable for different adsorptive applications. |
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| Keywords: | silica aerogels ambient pressure drying surface structure adsorption properties |
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