One-Step Dipping Fabrication of Fe3O4/PVDF-HFP Composite 3D Porous Sponge for Magnetically Controllable Oil–Water Separation,ACS Sustainable Chemistry & Engineering

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One-Step Dipping Fabrication of Fe3O4/PVDF-HFP Composite 3D Porous Sponge for Magnetically Controllable Oil–Water Separation
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-07-01 00:00:00 , DOI: 10.1021/acssuschemeng.8b02035
Jiatu Li ₁ , Mizuki Tenjimbayashi ₁ , Nicole S. Zacharia ₂ , Seimei Shiratori ₁

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Industrial oil spills in various bodies of water is a worldwide environmental problem that requires effective oil absorbents with remote controllability, which would be a clear improvement upon currently used technologies. One approach for adding remote controllability is embedding magnetic particles into the oil absorbent materials; however, there are currently few reports of magnetic oil absorbents. Most of these are prepared through multistep processes or using hazardous materials, which inhibits their practical use. In this study, we introduce a single-step dipping method to simultaneously provide both magnetic and hydrophobic/oleophilic functions to melamine foam by combining hydrophobic flexible copolymer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and magnetic Fe₃O₄ nanoparticles synthesized by a method suitable for mass production. The as-fabricated coating performs effectively for oil collection of oil spilled on water, and the movement of the foam on the water’s surface can be effectively controlled under magnetic field without touching it directly. Also, the coating is capable of regenerating its oil-absorbing property by being wrung out after the initial absorption owing to its flexibility and separation of oil in a water-in-oil emulsion. Such a simple method for the creation of multifunction material could potentially be helpful for the development of commercial remediation materials.

中文翻译：

Fe ₃ O ₄ / PVDF-HFP复合3D多孔海绵的一步浸渍制造，用于磁控油水分离

工业用油在各种水域中的溢漏是一个全球性的环境问题，需要具有远程可控性的有效吸油剂，这将是对当前使用技术的明显改进。一种增加远程控制能力的方法是将磁性颗粒嵌入吸油材料中。然而，目前很少有磁性吸油剂的报道。其中大多数是通过多步法或使用有害物质制备的，这阻碍了它们的实际使用。在这项研究中，我们介绍了一种单步浸渍方法，通过结合疏水性柔性共聚物聚偏二氟乙烯-共-六氟丙烯（PVDF-HFP）和磁性Fe ₃来同时为三聚氰胺泡沫提供磁性和疏水/亲油功能。通过适合大规模生产的方法合成的O ₄纳米颗粒。如此制成的涂层可有效地收集溢到水上的油的集油效果，并且可以在磁场下有效控制泡沫在水表面的运动，而无需直接接触泡沫。而且，由于其柔韧性和油包水乳状液中油的分离，涂层能够通过在初始吸收之后被扭绞而再生其吸油性能。这种用于创建多功能材料的简单方法可能对开发商业补救材料很有帮助。

更新日期：2018-07-01

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