Facile approach in fabricating superhydrophobic SiO2/polymer nanocomposite coating

We have developed a facile spin-coating method to prepare water-repellent SiO2/polymer composite coating without any surface chemical modification. The wettability can be adjusted by controlling the content of SiO2 nanoparticles. The coating demonstrates sustainable superhydrophobicity in the condition of continuous contact with corrosive liquids. Importantly, the coating can be fabricated on various metal substrates to prevent metal from corrosion.

► Fluorine-free superhydrophobic SiO2/polymer composite coatings are fabricated by a simple spin-coating method without any surface chemical modification. ► The SiO2/polymer coatings show long-term stability in the condition of continuous contact with corrosive water. ► The coating can be fabricated on various metal substrates to prevent metal from corrosion.