Robust and continuous oil/water separation with superhydrophobic glass microfiber membrane by vertical polymerization under harsh conditions

被引:32
作者
Woo, Seeun [1 ]
Park, Hong Ryul [1 ]
Park, Jinyoung [1 ]
Yi, Johan [1 ]
Hwang, Woonbong [1 ]
机构
[1] Pohang Univ Sci & Technol POSTECH, Dept Mech Engn, Pohang 37673, Gyeongbuk, South Korea
关键词
OIL-WATER SEPARATION; SUPEROLEOPHILIC FILTER-PAPER; SURFACE MODIFICATION; HYDROPHOBIC SURFACE; POLYURETHANE SPONGE; MESH FILM; FABRICATION; NANOSTRUCTURES; MONOLAYERS;
D O I
10.1038/s41598-020-78271-9
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
We report a robust and continuous oil/water separation with nanostructured glass microfiber (GMF) membranes modified by oxygen plasma treatment and self-assembled monolayer coating with vertical polymerization. The modified GMF membrane had a nanostructured surface and showed excellent superhydrophobicity. With an appropriate membrane thickness, a high water intrusion pressure (<62.7 kPa) was achieved for continuous pressure-driven separation of oil/water mixtures with high flux (<4418 L h(-1) m(-2)) and high oil purity (>99%). Under simulated industrial conditions, the modified GMF membrane exhibited robust chemical stability against strong acidic/alkaline solutions and corrosive environments. The proposed superhydrophobic composite coating technique is simple, low cost, environmentally friendly, and suitable for the mass production of scalable three-dimensional surfaces. Moreover, its stability and customizable functionality offers considerable potential for a wide range of novel applications.
引用
收藏
页数:10
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