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

被引：41

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

页码：423 / 429

页数：7

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