Tailoring the wettability of TiO₂ nanotube layers

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• 作者：Eugeniu Balaur ; Jan M. Macak ; Luciano Taveira and Patrik Schmuki
• 关键词：TiO₂ nanotubes ; Wetting ; Self-assembled monolayer ; Hydrophobicity
• 刊名：Electrochemistry Communications
• 出版年：2005
• 期刊代码：29_13882481
• 类别：ch
• 出版时间：2005
• 卷：7
• 期：10
• 页码：1066-1070
• 文件大小：333 K

摘要

Self-organized TiO₂ nanotube layers were grown on Ti by electrochemical anodization. As prepared, these layers showed a super-hydrophilic wetting behaviour. When modified with organic molecules, octadecylsilane (C₁₈H₃₇SiH₃) or octadecylphosphonic acid (C₁₈H₃₇PO(OH)₂), the layers show a super-hydrophobic behaviour. We demonstrate how the tubular geometry of the TiO₂ layers combined with UV induced decomposition of the organic monolayers (SAM) can be used to adjust the surface wetting properties to any desired degree from super-hydrophobic to super-hydrophilic.