Superhydrophobic ZnO Surfaces with Anti-corrosive and Icing delay Abilities

How to improve the corrosion resistance and icing-delay ability of metal in practice is still a big challenge. Herein, a ZnO surface with superhydrophobicity was fabricated by combining anodic oxidation and surface modification on zinc substrate. The effects of topographies and chemical composition on surface wettability were discussed in detail. The water contact angle and roll-off angle on the optimal superhydrophobic ZnO surface is about 161.0° and 5°, respectively. The results reveal the self-cleaning property, the corrosion resistance and icing-delay ability of the as-prepared sample were improved due to the superhydrophobic treatment. The method adopted here is facile and the cost is low, which is believed to afford a new idea for the design and construction of superhydrophobic surface on metal-based materials and broaden its potential application in anti-corrosion and icing-delay fields.