Abstract
A simple and effective superhydrophobic mesh was designed and made to separate oil-water mixture. Alkali-activated fly ash reacted with 1-bromooctadecane to prepare superhydrophobic modified fly ash (MFA) with low surface energy through Williamson ether synthesis. The MFA powder was then coated uniformly on a stainless steel mesh (SSM) along with the epoxy resin E44 and curing agent T31 to give the superhydrophobic MFA-modified stainless steel mesh (MFA-SSM). The MFA-SSM has a high static water contact angle (CA) of 150.1° and can separate various oil or organic solvent from water with >95% separation efficiency. The oil-water separation efficiency remained high after 30 runs of petroleum ether/water separation. The developed superhydrophobic stainless steel mesh is expected to have wider use in oil-water separation.
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WFZ is an editorial board member for this journal and was not involved in the editorial review or the decision to publish this article. All authors declare that there are no competing interests.
Funded by Hubei Technology Innovation Key Program (No. 2018AAA004)
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Yu, Y., Liu, P., Wang, F. et al. Preparation of Hydrophobic Fly Ash by Surface Modification and Oil-water Separation Devices. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 38, 695–700 (2023). https://doi.org/10.1007/s11595-023-2748-7
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DOI: https://doi.org/10.1007/s11595-023-2748-7