Superhydrophobic and photocatalytic synergistic Self-Cleaning ZnS coating

The superhydrophobic photocatalytic self-cleaning coating has both physical and chemical self-cleaning properties, which has attracted wide attention of researchers in recent years. In this paper, ZnS superhydrophobic coating was prepared on the surface of zinc substrate by economic and environmental friendly solvothermal method and chemical modification method. By means of EDS, X-ray diffraction and X-ray photoelectron spectroscopy (XPS), it was proved that ZnS superhydrophobic coating was successfully formed on the surface of zinc substrate after solvothermal reaction and chemical modification. Moreover, the morphology of the coating surface was observed to be nanobeam by scanning electron microscopy, and the Cassie contact state was formed when water droplets contacted with the superhydrophobic coating surface containing ZnS nanobeam. In addition, the physical and chemical self-cleaning properties of ZnS superhydrophobic coatings were tested and their principles were explored. The results show that the nanobundle ZnS superhydrophobic coating has excellent physical and chemical self-cleaning properties.