Facile Approach to Develop Durable and Reusable Superhydrophobic/superoleophilic Coatings for Steel Mesh Surfaces
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° ± 3° water tilting angle of 6° ± 1° and oil static contact angle of nearly 0°. 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.
D. Nanda et al., "Facile Approach to Develop Durable and Reusable Superhydrophobic/superoleophilic Coatings for Steel Mesh Surfaces," Journal of Colloid and Interface Science, vol. 535, pp. 50 - 57, Academic Press Inc., Feb 2019.
The definitive version is available at https://doi.org/10.1016/j.jcis.2018.09.088
Materials Science and Engineering
Keywords and Phrases
Chemical etching; HDTMS; Superhydrophobic; Superoleophilic; Water-repellant
International Standard Serial Number (ISSN)
Article - Journal
© 2019 Academic Press Inc., All rights reserved.
01 Feb 2019