One-step plant-inspired reaction that transform membrane hydrophobicity into high hydrophilicity and underwater super oleophobicity for oil-in-water emulsion separation

被引：40
|
作者：
Ding, Liping [1 ]
Wang, Yanqing [2 ]
Zhu, Peng [1 ]
Bai, Yongping [3 ]
机构：
[1] Nantong Univ, Sch Chem & Chem Engn, Nantong 226007, Peoples R China
[2] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore
[3] Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Heilongjiang, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2019年 / 479卷
关键词：
One-step reaction; Plant-inspired hybrid coatings; High hydrophilicity; Underwater superoleophobicity; Oil-in-water emulsion separation; OIL/WATER SEPARATION; WASTE-WATER; POLYPROPYLENE MEMBRANE; COMPOSITE; ULTRAFILTRATION; MICROFILTRATION; PERFORMANCE; SPONGE;
D O I：
10.1016/j.apsusc.2019.02.103
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Here we report a universal and cost-effective strategy via a one-step levodopa (L-DOPA)/3-amino-propyltriethoxysilane (APTES) reaction modified hydrophobic membrane for highly efficient separation of oil-water emulsions. Interestingly, the newly designed composite membrane possesses both high hydrophilicity and underwater super oleophobicity. Under gravity-driven separation conditions, the membrane displays superior efficiency to separate oil-water emulsions with an ultrahigh water flux. The low cost, the simplicity of fabrication, and versatility of the L-DOPA/APTES coating may open up new insights to molecularly design commercial membranes with superior hydrophilicity and underwater super oleophobicity for oily water separation and purification.
引用
收藏
页码：423 / 429
页数：7
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