| 疏水型SiO2气凝胶的常压制备及吸附性能研究 |
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| 引用本文： | 张志华,倪星元,沈军,杨庙祥.疏水型SiO2气凝胶的常压制备及吸附性能研究[J].同济大学学报(自然科学版),2005,33(12):1641-1645. |
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| 作者姓名： | 张志华 倪星元 沈军 杨庙祥 |
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| 作者单位： | 1. 同济大学,波耳固体物理研究所,上海,200092
2. 上海市纺织科学研究院,上海,200082 |
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| 基金项目： | 国家自然科学基金重点资助项目(20133040)，国家“八六三”高技术研究发展计划资助项目(2002AA842052)，上海市科委纳米专项资助项目(0352nm056,0452nm088)，上海市重点学科建设基金资助项目，上海科技启明星跟踪计划资助项目(05QMH1413) |
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| 摘 要： | 以多聚硅E-40为硅源,采用溶胶-凝胶法,通过表面修饰等工艺,在常压条件下制备了高气孔率的疏水性SiO2气凝胶.用扫描电镜、红外光谱1、3C,29Si核磁共振谱以及孔径分布仪,表征测试其结构和吸附特性.研究结果显示,SiO2气凝胶具有纳米多孔结构,且有较好的疏水特性,吸附性能较活性炭纤维和活性炭颗粒更为优越,再吸附容量基本不变,是一种极好的高吸附材料,具有广阔的应用前景.
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| 关 键 词： | SiO2气凝胶 常压干燥 疏水 吸附特性 |
| 文章编号： | 0253-374X（2005）12-1641-05 |
| 收稿时间： | 06 28 2004 12:00AM |
| 修稿时间： | 2004-06-28 |
Hydrophobic Silica Aerogels Prepared with Ambient Pressure Drying and Its Adsorption Properties |
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| ZHANG Zhi-hua,NI Xing-yuan,SHEN Jun,YANG Miao-xiang.Hydrophobic Silica Aerogels Prepared with Ambient Pressure Drying and Its Adsorption Properties[J].Journal of Tongji University(Natural Science),2005,33(12):1641-1645. |
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| Authors: | ZHANG Zhi-hua NI Xing-yuan SHEN Jun YANG Miao-xiang |
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| Institution: | 1. Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China; 2. Shanghai Textile Research Institute, Shanghai 200082, China |
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| Abstract: | A new method to prepare hydrophobic silica aerogels as effective adsorptive material was introduced.Polyethoxydisiloxanes(E-40) was used as silicon source and hydrophobic silica aerogels dried at ambient pressure were prepared via sol-gel process and surface modification.Scanning electronic microscopy,fourier transform infrared spectrometer(FT-IR),()~(13)C,()~(29)Si nuclear magnetic resonance spectra and pore size distribution measurement were used to characterize the morphology and pore structure of the silica aerogels.The adsorption capacities of the silica aerogels were also determined.The results show that the silica aerogels have a typical nano-porous microstructure with hydrophobic property.The pore size distribution is from several nanometers to dozens of nanometers.They have more excellent adsorption capacities compared with activated carbon fibres,granules of activated carbon.They are excellent adsorptive materials with wide applications. |
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| Keywords: | silica aerogels ambient pressure drying hydrophobic adsorption properties |
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