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A longstanding quest in material science has been the development of superhydrophobic coating based on a single material, without the requirement of fluorination or silane treatment. In this work, the micro-arc oxidation (MAO) coating as transition layer can effectively enhance the bonding force of the superhydrophobic coating. The email protected organic frameworks (MOFs) core-shell structure was synthesized by a simple self-templating method, and obtained email protected zinc salt (ZIF-8) nanorods array on Magnesium (Mg) alloy. ZnO nanorods not only act as the template but also provide Zn2+ for ZIF-8. In addition, we proved that the ligand concentration, synthesis time and temperature are the keys to the preparation of email protected nanorods. As we expect, the email protected nanorods array can trap air in the gaps to form an air layer, and the coating exhibits superhydrophobic properties (154.81°). Excitingly, email protected nanorods array shown a superhydrophobic property, without the requirement of fluorination or silane treatment. The results shown that the coating has good chemical stability and self-cleaning performance. Meanwhile, the corrosion resistance has been significantly improved, Rct was increased from 1.044×103 to 1.414×106 Ω/cm2 and Icorr was reduced from 4.275×10−5 to 5.611×10−9 A/cm2. Therefore, the email protected core-shell structure has broad application prospects in anti-corrosion.
Jiang et al. (2022) studied this question.