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自清洁功能的超疏水微/纳米结构铜网用于高效的分离油水
张泰恒,颜 韬,赵国庆,胡文吉豪*,焦飞鹏*
作者单位E-mail
张泰恒 中南大学化学化工学院长沙 410083  
颜 韬 中南大学化学化工学院长沙 410083  
赵国庆 中南大学化学化工学院长沙 410083  
胡文吉豪* 中南大学化学化工学院长沙 410083阿尔伯塔大学化学与材料工程系埃德蒙顿 T5K1B9 huwenjihaoluke@163.com 
焦飞鹏* 中南大学化学化工学院长沙 410083 jiaofp@163.com 
摘要:
本文介绍了一种简便的方法制备$n$-十二烷基三甲氧基硅烷@三氧化钨包覆的超亲油超疏水的铜网. 所制备的铜网显示了较为突出的超亲油和超疏水性能,该铜网的水接触角大约有154.39°,而油接触角接近于0°. 实验利用了各种有机溶剂和水的混合物对所制备网膜进行分离性能测试,结果表明所得涂覆铜网的油水分离效率高达99.3%,并且水的通量大约为9962.3 L·h-1·m-2. 所制备的铜网具有良好的稳定性,经过10次分离循环后分离效率仍然保持在90%以上. 由于三氧化钨优异的光催化降解性能,所制备铜网具有自清洁能力. 因此,被润滑油污染的网膜可以恢复超疏水性,而这种自清洁性使所制网膜可以反复用于油水分离.
关键词:  超疏水,微/纳米结构,三氧化钨,自清洁,油/水分离
DOI:10.1063/1674-0068/cjcp1810233
分类号:
基金项目:
Superhydrophobic Micro/Nanostructured Copper Mesh with Self-Cleaning Property for E ective Oil/Water Separation
Tai-heng Zhang,Tao Yan,Guo-qing Zhao,Wenjihao Hu*,Fei-peng Jiao*
Abstract:
In this work, a simple method was carried out to successfully fabricate superoleophilic and superhydrophobic N-dodecyltrimethoxysilane@tungsten trioxide coated copper mesh. The as-fabricated copper mesh displayed prominent superoleophilicity and superhydrophobicity with a huge water contact angle about 154.39° and oil contact angle near 0°. Moreover, the coated copper mesh showed high separation efficiency approximately 99.3%, and huge water flux about 9962.3 L·h-1·m-2, which could be used to separate various organic solvents/water mixtures. Furthermore, the coated copper mesh showed favorable stability that the separation efficiency remained above 90% after 10 separation cycles. Benefiting from the excellent photocatalytic degradation ability of tungsten trioxide, the coated copper mesh possessed the self-cleaning capacity. Therefore, the mesh contaminated with lubricating oil could regain superhydrophobic property, and this property of self-cleaning permitted that the fabricated copper mesh could be repeatedly used for oil and water separation.
Key words:  Superhydrophobicity, Micro/nanostructure, Tungsten trioxide, Self-cleaning, Oil/water separation