A novel, efficient and cost-effective synthesis technique for the development of superhydrophobic glass surface

Herein, we demonstrate the fabrication of a superhydrophobic surface by chemical etching and surface modification of glass ceramics. The surface morphology, crystal structure, chemical composition and wettability of the prepared surface were analyzed by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and water contact angle measurements. The modified glass ceramics exhibited an average water contact angle (WCA) of 152.7° ± 1.2°, a maximum WCA of 157° and a sliding angle of < 5°. The superhydrophobic behavior of the prepared glass surface can be explained by using the surface modification process and resulting microstructure, according to Cassie-Baxter model. In addition, the superhydrophobic glass surface has shown excellent mechanical properties by passing a 4H pencil hardness test. The present study provides a novel route for the synthesis of superhydrophobic surface and opens up avenues for further research in a wide range of application.