以甲基三乙氧基硅烷(MTES)和二甲基二乙氧基硅烷(DMDES)为前驱体,水为反应物,乙醇为溶剂,盐酸和氨水为催化剂,十六烷基三甲基溴化铵(CTAB)为表面活性剂,通过溶胶-凝胶法和超临界干燥制备得到疏水亲油MTES-DMDES型柔性气凝胶块体.通过红外光谱、X射线衍射、扫描电镜、X射线能量色谱、应力-应变,疏水性测试、热重等测试分析发现,气凝胶具有三维网络骨架结构,密度低至0.0897 g/cm3,最大应变达到80％.应力低至36.85 kPa,疏水接触角为153.6°,热稳定温度高达400℃.能从水中快速高效去除油污,是具有广阔应用前景的油/水分离材料.
参考文献
| [1] | Mark A. Shannon;Paul W. Bohn;Menachem Elimelech;John G. Georgiadis;Benito J. Marinas;Anne M. Mayes.Science and technology for water purification in the coming decades[J].Nature,20087185(7185):301-310. |
| [2] | Zhongxin Xue;Yingze Cao;Na Liu.Special wettable materials for oil/water separation[J].Journal of Materials Chemistry, A. Materials for energy and sustainability,20148(8):2445-2460. |
| [3] | Gupta, VK;Carrott, PJM;Carrott, MMLR;Suhas.Low-Cost Adsorbents: Growing Approach to Wastewater Treatmenta Review[J].Critical reviews in environmental science and technology,20099/12(9/12):783-842. |
| [4] | V. Rajakovic-Ognjanovic;G. Aleksic;Lj. Rajakovic.Governing factors for motor oil removal from water with different sorption materials[J].Journal of hazardous materials,20081/3(1/3):558-563. |
| [5] | T.R. Annunciado;T.H.D. Sydenstricker;S.C. Amico.Experimental investigation of various vegetable fibers as sorbent materials for oil spills[J].Marine pollution bulletin,200511(11):1340-1346. |
| [6] | Jumping Zhang;Stefan Seeger.Polyester Materials with Superwetting Silicone Nanofilaments for Oil/Water Separation and Selective Oil Absorption[J].Advanced functional materials,201124(24):4699-4704. |
| [7] | V. Rajakovic;G. Aleksic;M. Radetic;Lj. Rajakovic.Efficiency of oil removal from real wastewater with different sorbent materials[J].Journal of hazardous materials,20071/2(1/2):494-499. |
| [8] | Hajar Maleki;Luisa Dur?es;António Portugal.An overview on silica aerogels synthesis and different mechanical reinforcing strategies[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,2014:55-74. |
| [9] | Gurav, J.L.;Rao, A.V.;Nadargi, D.Y.;Park, H.-H..Ambient pressure dried TEOS-based silica aerogels: Good absorbents of organic liquids[J].Journal of Materials Science,20102(2):503-510. |
| [10] | Ding Wang;Elisabeth McLaughlin;Robert Pfeffer.Adsorption of oils from pure liquid and oil-water emulsion on hydrophobic silica aerogels[J].Separation and Purification Technology,2012:28-35. |
| [11] | Hegde ND;Rao AV.Physical properties of methyltrimethoxysilane based elastic silica aerogels prepared by the two-stage sol-gel process[J].Journal of Materials Science,200716(16):6965-6971. |
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