Journal
LANGMUIR
Volume 25, Issue 19, Pages 11822-11826Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la901426r
Keywords
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Funding
- Chinese Academy of Sciences [KGCX2-YW-370, KSCX2-YW-G-059]
- National Natural Science Foundation of China [10776034, 20871118]
- CAS
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This article describes a simple and convenient method to fabricate hierarchically structured coatings on glass substrates from soda time glass by one-step hydrothermal method. The surfaces of the coatings are rough and are composed of flower-like particles assembled by nanoflakes or urchin-like particles constructed by nanowires. These rough surfaces exhibit superhydrophilicity, their water contact angles reaching 0 degrees in less than 40 ms. After surface modification by 1H,1H,2H,2H-perfluorooetyltriethoxysilane, the wetting properties of these coatings switch from superhydrophilicity to superhydrophobicity, with water contact angles as high as 160 degrees and slide angle as low as 1 degrees. The formation mechanism of the hierarchically structured coatings is discussed in detail on the basis of experimental results.
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