Superhydrophobic surface of surface-treated nano-graphene structure

Abstract

urface morphology with superhydrophobicity has attracted extensive interest due to self-cleaning properties, reduced oxidation, and improved efficiency of marine vessels. We report a unique and direct route towards a superhydrophobic graphene surface, which opens up possibilities for transparent flexible graphene-based electrodes with a non-wetting property. Graphene structures were prepared by evenly coating graphene oxide on the surface-treated silica particles followed by reduction of the graphene oxide and etching of silica particles. The contact angle of the transparent film of thermally reduced graphene oxide (rGO) spheres was 125°. After surface treatment with fluorine functional groups, the contact angle reached 157° achieved by further controlling the surface energy.