Nanoscale SiO2-coated superhydrophobic meshes via electro-spray deposition for oil-water separation
Nanoscale SiO2-coated superhydrophobic meshes via electro-spray deposition for oil-water separation
复制标题
通过电喷雾沉积制备纳米级 SiO2 涂层超疏水网格用于油水分离
DOI：
10.1016/j.powtec.2020.06.024
复制
发表时间：
2020-08-01
影响因子：
5.2
通讯作者：
Lu, Yao
中科院分区：
文献类型：
--
作者：
Chen, Fengjun;Hao, Shanmei;Lu, Yao
浮油收集是处理含油废水和溢油排放的重要方法。超疏水材料在油水分离中越来越受到重视。提出了一种构造超疏水网格的有趣方法。采用电喷雾沉积的方法将纳米级SiO2颗粒包覆在网状结构上，形成微结构网状结构，再用十二烷基三甲氧基硅烷对网状结构进行超疏水和超亲脂改性。整个施工过程简单，不需要复杂的设备和化学试剂。不锈钢网、铜网和丙烯酸网经过超疏水处理。在高油流量条件下，浮油回收率可达95%。所构建的超疏水网状物可以在高温、低温或含盐溶液中工作。使用20次后，超疏水网仍保持较高的收集率。该方法的显著优点是不受材料限制，收集率高，环境友好，具有很大的应用潜力。(C) 2020 Elsevier B.V.版权所有
Oil slick collection is an important way to treat oil-bearing wastewater and oil spill discharge. Superhydrophobic materials have attracted increasing attention in oil-water separation. An interesting method of constructing superhydrophobic meshes was presented. A mesh was coated with nanoscale SiO2 particles via electro-spray deposition to form microstructure mesh, which was then modified by odecyltrimethoxysilane to be superhydrophobic and superlipophilic. The whole construction process was easy without the requirement of complex equipment or chemical reagents. Stainless steel mesh, copper mesh and acrylic mesh were treated to be superhydrophobic. The oil slick collection rate reached 95% with high oil flow. The constructed superhydrophobic mesh could work at high temperature, low temperature or salty solution. After 20 times of use, the superhydrophobic meshes maintained a high collection rate. The significant advantages of this method are the ability to be free from material constraints, high collection rate and environmental friendliness, showing great application potential. (C) 2020 Elsevier B.V. All rights reserved.