From superhydrophilic to superhydrophobic : controlling wettability of hydroxide zinc carbonate film on zinc plates

Hydroxide zinc carbonate (HZC) films with different morphologies were deposited on zinc plates through a convenient chemical-bath deposition (CBD) process using urea solution. By altering deposition conditions, the structure of HZC crystals could be tuned from vertically aligned nanosheets to flower...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 25(2009), 6 vom: 09. Apr., Seite 3640-5
1. Verfasser: Su, Bin (VerfasserIn)
Weitere Verfasser: Li, Mei, Shi, Zhengyu, Lu, Qinghua
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
Beschreibung
Zusammenfassung:Hydroxide zinc carbonate (HZC) films with different morphologies were deposited on zinc plates through a convenient chemical-bath deposition (CBD) process using urea solution. By altering deposition conditions, the structure of HZC crystals could be tuned from vertically aligned nanosheets to flowerlike microstructures. The upright-standing HZC nanosheets were developed from interconnected nanorods growing up on the zinc plates in aqueous urea solution and led to superhydrophilic properties because of the hydrophilic upside edges consisting of hydroxyl groups and large distance. In contrast, flowerlike microstructures formed in N,N-dimethylformamide-water solution and the exposed hydrophobic crystal planes resulted in superhydrophobic properties with a water contact angle as high as 155.2 degrees. The final surface wettabilities could be ascribed to both the atomic composition and hydrophilicity of HZC crystal planes exposed to the water-solid interface. All the surfaces with specific wettabilities can be one-step fabricated without subsequent modification, and tunable wetting properties can provide zinc substrates extending applications
Beschreibung:Date Completed 15.09.2009
Date Revised 26.08.2009
published: Print
Citation Status PubMed-not-MEDLINE
ISSN:1520-5827
DOI:10.1021/la803948m