期刊
ACS APPLIED MATERIALS & INTERFACES
卷 1, 期 9, 页码 2080-2085出版社
AMER CHEMICAL SOC
DOI: 10.1021/am900466f
关键词
transferrable superhydrophobic surface; hexagonal CuI powder; modification; low-free-energy materials
资金
- National Natural Science Foundation of China [50601026, 20571025]
- Henan Provincial Natural Science Foundation of China [082300420180, 092300410196]
- Natural Science Foundation of Educational Department of Henan Province [2008A150014]
- Anhui Provincial Natural Science Foundation of China [070414199]
A new route combining a facile wet-chemical process and spin coating was developed to fabricate a CuI film assembled by hexagonal crystals. Remarkably, such a CuI film displays excellent superhydrophobicity without further modification by low-free-energy materials (thiol or fluoroalkylsilane). The special wettability is attributed to a hierarchical morphology of CuI crystals with two length-scale roughnesses and the nature OF the material itself, Importantly, this superhydrophobicity is quite,stable and the water contact angle of the as-prepared sample only decreases slightly, even when it is kept in air for about half a year. The superhydrophobicity of the as-prepared CuI powder is a bulk property of the material and not just OF its surface, so such a powder coating could then prove useful in conferring superhydrophobicity to other surfaces to which it is applied. These facts might improve its practical application with environmental friendship in superhydrophobic coatings.
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