One-step fabrication of robust superhydrophobic and superoleophilic surfaces with self-cleaning and oil/water separation function

Scientific Reports
Zhi-Hui ZhangCheng Luo

Abstract

Superhydrophobic surfaces have great potential for application in self-cleaning and oil/water separation. However, the large-scale practical applications of superhydrophobic coating surfaces are impeded by many factors, such as complicated fabrication processes, the use of fluorinated reagents and noxious organic solvents and poor mechanical stability. Herein, we describe the successful preparation of a fluorine-free multifunctional coating without noxious organic solvents that was brushed, dipped or sprayed onto glass slides and stainless-steel meshes as substrates. The obtained multifunctional superhydrophobic and superoleophilic surfaces (MSHOs) demonstrated self-cleaning abilities even when contaminated with or immersed in oil. The superhydrophobic surfaces were robust and maintained their water repellency after being scratched with a knife or abraded with sandpaper for 50 cycles. In addition, stainless-steel meshes sprayed with the coating quickly separated various oil/water mixtures with a high separation efficiency (>93%). Furthermore, the coated mesh maintained a high separation efficiency above 95% over 20 cycles of separation. This simple and effective strategy will inspire the large-scale fabrication of multifunction...Continue Reading

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Citations

Mar 7, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Mohamed S SelimAhmed Elmarakbi
Jan 8, 2021·Soft Matter·Laura K Rivera-TarazonaTaylor H Ware
Feb 9, 2021·Chemical Society Reviews·Wenluan ZhangXu Deng
Feb 14, 2021·Nature Communications·Lishen ZhangHua-Zhong Yu
Apr 24, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Sumaira YasmeenHan-Bo-Ram Lee
Oct 5, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Deidre E DamonAbraham K Badu-Tawiah
Oct 19, 2019·ACS Applied Materials & Interfaces·Assem ElzaabalawyShaker A Meguid
Oct 22, 2020·ACS Applied Materials & Interfaces·Kirill IsakovHarri Lipsanen
Dec 5, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Yunrui HanXiaoming Luo
Apr 2, 2020·ACS Applied Materials & Interfaces·Saurabh JoshiSuresh Valiyaveettil

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Methods Mentioned

BETA
scanning electron microscopy
confocal microscopy

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