Design and preparation of ZnS superhydrophobic coating with self-healing property and oil-water separation function on stainless steel mesh surface
Kang Wang, Sirong Yu, Wei Li, Yuanji Song, Pu Gong, Mingshan Zhang, Huaisen Li, Daijun Sun, Xizhen Yang, Xuewu Wang
Abstract
In order to prepare stainless steel mesh (SSM) with special wettability , long service life and suitable for oil-water separation research, micro-nano rough structure was constructed on the surface of SSM by the synergistic method of electrodeposition and solvothermal method. Finally, ZnS superhydrophobic coating (ZnS@SSM) with special wettability was successfully prepared on the surface of SSM by low-energy modification method. The wettability, microstructure and composition of the sample surface were analyzed by contact angle meter, field emission scanning electron microscope , X-ray diffractometer and Fourier infrared spectrometer. The results showed that the surface of ZnS@SSM was superhydrophobic , and the water contact angle was as high as 158°. The oil-water separation efficiency and reusability of the sample were characterized by an oil-water separation device, and the oil-water separation efficiency was 97.8%. The self-healing performance of ZnS@SSM was experimented by oxygen plasma etching , and it exhibited excellent durability performance.