A Durable and Self-Cleaning Superhydrophobic Surface Prepared by Precipitating Flower-Like Crystals on a Glass-Ceramic Surface.

Herein, a superhydrophobic surface with superior durability was fabricated on a glass‑ceramic surface by crystallization, hydrofluoric acid (HF) etching, and surface grafting. The as‑prepared glass‑ceramic surface was composed of three‑dimensional flower‑like micro‑clusters, which were self‑assembled from numerous nanosheets. Such a dual‑scale rough surface exhibited superhydrophobicity, with a water contact angle (WCA) of 170.3° ± 0.1° and a sliding angle (SA) of ~2° after grafting with 1H, 1H, 2H, 2H‑perfluorodecyltriethoxysilane (FAS‑17). This can be attributed to the synergistic effect between the dual‑scale structure and surface chemistry. Furthermore, this surface exhibited excellent self‑cleaning properties, stability against strong acid and strong alkali corrosion, and anti‑stripping properties.