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[资源] 纳米基体系用于控制和清除油的溢出

Nano-based systems for oil spills control and cleanup，Journal of Hazardous Materials272 (2014) 20–27. 影响因子：4.331
摘要：This paper reports the development of uperhydrophobic nanocomposite systems which are also oleophilic. As hydrophobicity is based on low energy surface and surface roughness, the electrospinning technique was selected as the manufacturing technique. N,N-dimethylformamide (DMF) was employed as the polystyrene (PS) solvent. The “Tea-bag” (T-B) nanocomposite system is based on exfoliated graphite surrounded by PS superhydrophobic membranes. The T-B systems were tested regarding its adsorption and absorption rates. To test these properties, it was employed three different water/oil emulsions, i.e., new and used motor oil, which have physical properties (viscosity and speciﬁc gravity) similar to heavy crude oil extracted in Brazil, and vacuum pump oil (which does not form oil/water emulsion). It was observed that oil adsorption rate is dependent on oil surface tension, while the absorption rate is mainly dependent on membrane/exfoliated graphite surface area. Experimental data show that oil absorption rates ranged between 2.5 g/g and 40 g/g, while the adsorption rate oscillated from 0.32 g/g/min to 0.80 g/g/min. Furthermore, T-B systems were tested as containment barriers and sorbent materials with good results including its recyclability.
中文翻译摘要：本文章报道了亲油的超疏水的纳米复合材料体系的发展。因为疏水性以低能面和表面粗糙度为基础，生产工艺选择静电纺丝技术。用DMF作聚苯乙烯（PS）溶剂。“茶袋包”（T-B）纳米复合材料体系以PS超疏水薄膜包裹的膨胀石墨为基础。测试了T-B体系的吸附和吸收速率。为了测试这些性能，用了三种不同的水/油乳剂，例如新的和用过的车用机油，它的物理性能（粘度和比重）与巴西提取的重质原油和真空泵油（不是成型油/水乳胶）。观察到油的吸附速率依赖于油的表面张力，吸附速率主要依赖于薄膜/膨胀石墨的表面积。实验数据表明油的吸收速率在2.5g/g和40g/g之间，吸附率由0.32g/gmin动荡到0.80g/gmin。进一步，用T-B体系作为安全壳屏障和吸附剂具有很好的吸附性能和循环性。
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