Superhydrophilic and underwater superoleophobic MFI zeolite-coated film for oil/water separation

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• 作者：Jiawen Zeng ; Zhiguang Guo
• 关键词：Superhydrophilic ; Superoleophobic ; Zeolite ; Separation ; Oil/water mixture
• 刊名：Colloids and Surfaces A: Physicochemical and Engineering Aspects
• 出版年：5 March, 2014
• 年：2014
• 卷：444
• 期：Complete
• 页码：283-288
• 全文大小：2931 K

文摘

Silicalite-1 (structure type MFI), an important type of zeolite, was prepared on the porous stainless steel wire by seed growth hydrothermal synthesis, forming an amazing film. The coated film consists of well-intergrown crystals with hexagonal prismatic shape (coffin shape), which shows superamphiphilic in air and superoleophobic underwater. This prepared film can effectively collect the oil from oil/water mixture underwater driven by gravity for several times, showing good durability and high separation efficiency, which is very helpful in the promising application of energy-efficient membrance for reducing the environmental impacts of oil spills. This work provides an alternative solution to current separation mesh based-on the surface wettability.