The hydrophobic SiO2 aerogels were prepared by in-situ polymerization sol-gel method and supercritical drying of ethanol method with tetraethylorthosilicate(TEOS) as silica source,methyl triethoxysilane (MTMS) as modifier,ethanol as solvent.Moreover,the structure and adsorption property of SiO2 aerogels were also studied.As results,the surface area of SiO2 aerogels was 863.59 m2/g,the pore volume was 3.57 cm3/g,and the contact angle was 150 °.Adsorption intensity of silica aerogels for organic liquid (alkanes,benzene compounds,and nitro-compounds) is bigger than that of activated carbon.The mass of the liquid absorbed increased linearly with the surface tension of the liquid.The lower surface tension and boiling point are,the shorter desorption time is.After regenerating 10 times,nitromethane regeneration rate remain the same,and almost more than 94％.So SiO2 aerogels have good absorption and regeneration property.
参考文献
| [1] | 刘转年,金奇庭,周安宁.废水的吸附法处理[J].水处理技术,2003(06):318-322. |
| [2] | A.S. Besov;A.V. Vorontsov;V.N. Parmon .Fast adsorptive and photocatalytic purification of air from acetone and dimethyl methylphosphonate by TiO2 aerosol[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2009(3/4):602-612. |
| [3] | Hongbing Jia;Yongfu Lian;Midori O. Ishitsuka;Tsukasa Nakahodo;Yutaka Maeda;Takahiro Tsuchiya;Takatsugu Wakahara;Takeshi Akasaka .Centrifugal purification of chemically modified single-walled carbon nanotubes[J].Science and technology of advanced materials,2005(6):571-581. |
| [4] | M. Reim;W. Koerner;J. Manara;S. Korder;M. Arduini-Schuster;H.-P. Ebert;J. Fricke .Silica aerogel granulate material for thermal insulation and daylighting[J].Solar Energy,2005(2):131-139. |
| [5] | Saxena R;Cho W;Rodriguez O;Gill WN;Plawsky JL .Stability of thin copper films on mesoporous dielectrics[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2004(0):14-22. |
| [6] | Gun S. Kim;Sang H. Hyun .Synthesis and characterization of silica aerogel films for inter-metal dielectrics via ambient drying[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2004(1/2):190-200. |
| [7] | Fricke J.;Tillotson T. .AEROGELS - PRODUCTION, CHARACTERIZATION, AND APPLICATIONS[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,1997(1/2):212-223. |
| [8] | Plata DL;Briones YJ;Wolfe RL;Carroll MK;Bakrania SD;Mandel SG;Anderson AM .Aerogel-platform optical sensors for oxygen gas[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2004(0):326-335. |
| [9] | Standeker S;Novak Z;Knez Z .Adsorption of toxic organic compounds from water with hydrophobic silica aerogels[J].Journal of Colloid and Interface Science,2007(2):362-368. |
| [10] | ZHAO Yue-qing,ZHAO Hai-lei,LIANG Ying-hua,JIA Qian-yi,ZHANG Bo-bo.Preparation and characterization of CuO-CoO-MnO/SiO2 nanocomposite aerogels as catalyst carriers[J].中国有色金属学报（英文版）,2010(08):1463-1469. |
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