Facile approach to develop durable and reusable superhydrophobic/superoleophilic coatings for steel mesh surfaces
Facile approach to develop durable and reusable superhydrophobic/superoleophilic coatings for steel mesh surfaces
复制标题
DOI：
10.1016/j.jcis.2018.09.088
复制
发表时间：
2019-02-01
影响因子：
9.9
通讯作者：
Bhushan, Bharat
中科院分区：
文献类型：
--
作者：
Nanda, Debasis;Sahoo, Abanti;Bhushan, Bharat
水体表面的石油泄漏现在是一个非常令人关切的问题，因为它们影响到海洋生物和生态系统。因此，从水中去除油的简易技术是非常感兴趣的。在这项研究中，超疏水性和超亲油涂层合成不锈钢丝网通过化学蚀刻使用的混合物FeCl 3和HCl，然后与十六烷基三甲氧基硅烷处理。表面形貌分析表明，在处理后的表面上的花状微观结构的存在。在不锈钢网上实现了超疏水和超亲油特性，水静态接触角为167度+/-3度，水倾斜角为6度+/-1度，油静态接触角接近0度。该涂层具有优异的热稳定性、化学稳定性和机械稳定性。采用涂层钢网对煤油-水和己烷-水混合物进行了简单的过滤分离，分离效率均在98%以上。这种方法可以在任何形状或尺寸的不锈钢网上实施，并将具有工业应用。(C)2018爱思唯尔公司All rights reserved.
Oil spills on the surfaces of bodies of water are now a great concern as they affect marine creatures and the ecosystem. Therefore, a facile technique for removal of oil from water is of much interest. In this study, superhydrophobic and superoleophilic coating is synthesized on stainless steel mesh via chemical etching using a mixture of FeCl3 and HCl followed by treatment with hexadecyltrimethoxysilane. Surface morphology analysis shows the presence of flower like microstructures on the surface after treatment. Superhydrophobic and superoleophilic properties have been achieved on stainless steel mesh with water static contact angle of 167 degrees +/- 3 degrees, water tilting angle of 6 degrees +/- 1 degrees, and oil static contact angle of nearly 0 degrees. The coating shows excellent thermal, chemical and mechanical stability. Kerosene-water and hexane-water mixtures were successfully separated via a simple filtering process using coated steel mesh with a separation efficiency of more than 98%. This approach can be implemented on any shape or size of stainless steel mesh and will have industrial applications. (C) 2018 Elsevier Inc. All rights reserved.