Effective cleanup of oil contamination on bio-inspired superhydrophobic surface

被引:0
作者
Qin Zhou
Leyang Wang
Qi Xu
Yuan Zhao
机构
[1] Chinese Academy of Sciences,Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco
[2] Changzhou University,Environmental Sciences
[3] University of Chinese Academy of Sciences,School of Environmental & Safety Engineering
来源
Environmental Science and Pollution Research | 2019年 / 26卷
关键词
Oil sorption; Superhydrophobic; TiO; Perfluorooctyltriethoxysilane; Aluminum foil;
D O I
暂无
中图分类号
学科分类号
摘要
The oil-water separation is a popular issue and the removal of oil from bulk water is also meaningful especially in oil spill incident, which not only wastes valuable energy resources but also threatens the ecological system and human health. Superhydrophobic and superoleophilic materials are very promising for the efficient oil removal from bulk water. Reported herein was a novel and easily operated superhydrophobic surface dip coating from a paint-like suspension containing two different sizes TiO2 and perfluorooctyltriethoxysilane. Aluminum foil substrate, which is flexile and cost-efficient, was bonded with commercial water-proof double-sided adhesive tape (DSAT) to fix the paint to improve the mechanical strength. The coated aluminum foil exhibited rapid sorption/desorption rate (267 L/h m2), high oil sorption capacity (21 g/g), and excellent recyclability (≫ 15 recycling times). After 15 recycling times of sorption/desorption, the coated surface morphology still remained hierarchical micro- and nanostructures and the water contact angle still reached ~ 150°, indicating its superhydrophobic property. Meanwhile, the cost of oil removal of the coated material can match that of the commercial sorbent. We anticipate that the coated superhydrophobic aluminum foil will show outstanding performances on oil absorption and have good applications on a large scale.
引用
收藏
页码:21321 / 21328
页数:7
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