Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 50, Issue 6, Pages 3089-3094Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ie102149y
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Funding
- National Science Foundation of China [20821004, 20990221]
- National 863 Program [2009AA03Z334, 2009AA033301]
- Beijing Nova Program of China [2009B011]
- Chinese Universities Scientific Fund [JD0901]
- State Key Laboratory of Supramolecular Structure and Materials [SKLSS-M201009]
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In this work, we have developed a facile and inexpensive method to fabricate a superhydrophobic surface with hierarchical nano- and microstructures. The superhydrophobic surface was prepared through spin coating of a mixture of nano- and microsized calcium carbonate (CaCO3) suspensions on a substrate, followed by modification of a low-surface-energy monolayer of stearic acid. The key parameters of the fabrication of suitable surface morphologies, including the content of CaCO3 powder and the percentage of nano- and microsized CaCO3 powder, were also investigated. Results showed that the optimum CaCO3 content was 40 wt % and the self-cleaning property of the film was achieved only by the addition of 2 wt 96 microsized CaCO3 powder and 38 wt nanosized CaCO3 powder. After modification with a self-assembled monolayer of stearic acid, the as-prepared coating showed self-cleaning properties with a water contact angle as high as 152.8 degrees and a sliding angle of 7.8 degrees.
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