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首页> 外文期刊>RSC Advances >Preparation of a porous superhydrophobic foam from waste plastic and its application for oil spill cleanup
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Preparation of a porous superhydrophobic foam from waste plastic and its application for oil spill cleanup

机译：用废塑料制备多孔超疏水泡沫及其在溢油清除中的应用

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摘要

In order to cope with the increasing oil spill accidents and the intentional discharge of oily wastewater, a new oil-adsorbing material with superhydrophobicity and reusability is needed. In this paper, waste plastic was used to fabricate an alveolate polystyrene (PS) foam to reduce secondary pollution. The PS foam was synthesized from a high internal phase Pickering emulsion (HIPPE) technique in a one-step process. The emulsion was stabilized by a co-Pickering system of Span 80 surfactant and SiO _(2) particles. To explain the super stability of the HIPPE, a novel model of the water-in-oil droplet was promoted. The obtained SiO _(2) @PS foam exhibited a multi-order-porous structure, and displayed superhydrophobicity and superoleophilicity. It can selectively remove various oily contaminants from water with a high adsorption capacity of 20.4–58.1 g g ~(?1) at a fast rate. The oil-adsorbed material can be reused by simple centrifugation, and no more than a 1% decline was obtained in the oil adsorption after 10 cycles. Therefore, the SiO _(2) @PS foam has a great potential application in oily water treatment.
机译：为了应对不断增加的漏油事故和有意排放含油废水，需要一种具有超疏水性和可重复使用性的新型吸油材料。在本文中，废塑料被用来制造泡沫聚苯乙烯（PS）泡沫以减少二次污染。 PS泡沫是通过高内相Pickering乳液（HIPPE）技术一步一步合成的。乳液通过Span 80表面活性剂和SiO_（2）颗粒的共选择系统稳定化。为了解释HIPPE的超稳定性，提出了油包水液滴的新型模型。所得的SiO_（2）@PS泡沫表现出多级多孔结构，并表现出超疏水性和超亲油性。它能以20.4-58.1 g g〜（？1）的高吸附能力快速地从水中选择性去除各种油性污染物。吸油材料可通过简单的离心再利用，在10个循环后吸油量下降不超过1％。因此，SiO_（2）@PS泡沫在油性水处理中具有巨大的潜在应用前景。

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