超亲水及水下超疏油铜网的制备及其油水分离性能的研究

发布时间：2018-06-14 15:28

本文选题：铜网 + 氢氧化铜　；参考：《表面技术》2017年05期

【摘要】：目的通过简单的溶液浸泡法制备油水分离铜网。方法经氢氧化钠和过硫酸钾混合溶液浸泡,制备超亲水及水下超疏油表面。利用扫描电镜、X射线衍射仪分析基底表面形貌及成分,利用接触角测量仪测量其润湿性能。结果铜网表面生成了微米结构的氢氧化铜,空气中水滴在其表面的接触角为0°,水中油滴的接触角高达159°,使铜网具备了在空气中超亲水、在水下超疏油的特性。通过油水分离实验发现,铜网在常温常压下对汽油、正己烷等几种不同种类油与水的混合液进行高效分离,分离效率达90%以上。经海水浸泡若干天后,铜网仍保持很高的油水分离效率,表现出较好的耐海水腐蚀性。结论实验制备的超亲水及水下超疏油铜网能够有效地分离油水混合液,且能应用到腐蚀性较强的场合中。
[Abstract]:Objective to prepare oil-water separation copper mesh by simple solution immersion method. Methods Ultra-hydrophilic and ultra-hydrophobic surfaces were prepared by soaking in mixed solution of sodium hydroxide and potassium persulfate. The surface morphology and composition of the substrate were analyzed by scanning electron microscopy (SEM) and X-ray diffractometer. The wetting properties of the substrate were measured by contact angle measuring instrument. Results Copper hydroxide with micron structure was formed on the surface of copper mesh. The contact angle of water droplets in air was 0 掳, and the contact angle of oil droplets in water was 159 掳. The contact angle of oil droplets in water was as high as 159 掳, which made the copper mesh superhydrophilic in air and super oil-sparing under water. Through the oil-water separation experiment, it is found that the separation efficiency of the mixture of gasoline, n-hexane and other kinds of oil and water is over 90% under normal temperature and atmospheric pressure. After being soaked in seawater for several days, copper mesh still keeps high oil and water separation efficiency and exhibits good corrosion resistance to seawater. Conclusion the superhydrophilic and underwater ultra-hydrophobic copper mesh can effectively separate the oil-water mixture and can be used in the corrosive situation.
【作者单位】：青岛理工大学;
【分类号】：TG174.2

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