A Superamphiphobic Coating with an Ammonia-Triggered Transition to Superhydrophilic and Superoleophobic for Oil-Water Separation

被引：334

作者：

Xu, Zhiguang ^{[1
]}

Zhao, Yan ^{[1
]}

Wang, Hongxia ^{[1
]}

Wang, Xungai ^{[1
]}

Lin, Tong ^{[1
]}

机构：

[1] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2015年 / 54卷 / 15期

基金：

澳大利亚研究理事会;

关键词：

hydrophobic effects; oil-water separation; porous materials; superoleophobicity; surface chemistry; CARBON NANOFIBER AEROGELS; UNDERWATER SUPEROLEOPHOBICITY; PVDF MEMBRANES; SURFACES; REMOVAL; MESH; FILM;

D O I：

10.1002/anie.201411283

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Superhydrophilic and superoleophobic materials are very attractive for efficient and cost-effective oil-water separation, but also very challenging to prepare. Reported herein is a new superamphiphobic coating that turns superhydrophilic and superoleophobic upon ammonia exposure. The coating is prepared from a mixture of silica nanoparticles and heptadecafluorononanoic acid-modified TiO2 sol by a facile dip-coating method. Commonly used materials, including polyester fabric and polyurethane sponge, modified with this coating show unusual capabilities for controllable filtration of an oil-water mixture and selective removal of water from bulk oil. We anticipate that this novel coating may lead to the development of advanced oil-water separation techniques.

引用

页码：4527 / 4530

页数：4

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