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Superhydrophobic Hair-Like Nanowire Membrane for the Highly Efficient Separation of Oil/Water Mixtures
Journal of Nanomaterials ( IF 3.791 ) Pub Date : 2020-08-03 , DOI: 10.1155/2020/8540580
Xinzuo Fang 1 , Yufan Liu 1 , Sheng Lei 1 , Junfei Ou 1
Affiliation  

Water pollution caused by oil leakage and oily wastewater has become a serious environmental problem. Therefore, it is important to develop an efficient material to remove oil from water. Given the cost and efficiency, the membrane with superhydrophobicity is the most used material for the separation of oil/water mixtures. However, many works have been done through modification with a fluorinated reagent, causing high cost and damage to the environment. In this work, a simple and fast two-step method is employed to achieve a superhydrophobic hair-like nanowire membrane. Through the alkali-assisted oxidation process and modification with nonfluorinated low surface energy chemical, the so-obtained membrane (denoted as SHM), with the water contact angle of about 164°, exhibits excellent separation efficiency for binary mixtures of water and oils (toluene, hexane, gasoline, and so on). Meantime, this membrane also exhibits excellent durability and reusability in the long-term separation process, indicating its great potential for practical application in the future.

中文翻译:

超疏水的类似于头发的纳米线膜,用于油/水混合物的高效分离

由漏油和含油废水引起的水污染已成为严重的环境问题。因此,重要的是开发一种从水中去除油的有效材料。考虑到成本和效率,具有超疏水性的​​膜是分离油/水混合物的最常用材料。然而,通过用氟化试剂进行改性已经完成了许多工作,从而导致高成本和对环境的破坏。在这项工作中,采用了一种简单,快速的两步法来获得超疏水的头发状纳米线膜。通过碱辅助氧化过程并用非氟化的低表面能化学物质进行改性,得到的膜(称为SHM)与水的接触角约为164°,对水和油(甲苯,己烷,汽油等)的二元混合物显示出优异的分离效率。同时,该膜在长期分离过程中还显示出优异的耐久性和可重复使用性,表明其在未来的实际应用中具有巨大的潜力。
更新日期:2020-08-03
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