Abstract
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.
Highlights
Inspired by the “lotus effect” in nature, numerous biomimetic superhydrophobic surfaces have been widely studied [1,2,3,4]
A superhydrophobic glass-ceramic surface was fabricated by sequential crystallization, 4
In aa superhydrophobic glass-ceramic surface was fabricated fabricated by sequential sequential of complex flower-like micro-clusters, which self-assembled from numerous nanosheets, showing
Summary
Inspired by the “lotus effect” in nature, numerous biomimetic superhydrophobic surfaces have been widely studied [1,2,3,4]. Superhydrophobic surfaces are fabricated by several preparation techniques, such as sol-gel [19], templating [20], chemical vapor deposition (CVD) [21], electrospinning [21,22], laser/plasma etching [7,23,24], and phase separation [25]. Materials 2020, 13, 1642; doi:10.3390/ma13071642 www.mdpi.com/journal/materials a flower-like structure was precipitated on the glass-ceramic surface by heat treatment, which was subsequently treated with hydrofluoric acid (HF) to corrode the glass phase and obtain a certain roughness by exposing the crystals. 99.5%), magnesium oxide (MgO ≥ 98.0%), basic microcrystalline to prepare superhydrophobic glass-ceramic surface with controllable aluminum oxide A flower-like structure was precipitated on the glass-ceramic surface by heat treatment, which was subsequently with hydrofluoric acid (HF)Surface to corrode the glass phase and obtain a certain
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