State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
Langmuir. 2010 Jun 15;26(12):10198-202. doi: 10.1021/la100355n.
We describe a simple method of fabricating a superhydrophobic carbon nanotube (CNT) film without any chemical modification. A remarkable surface wettability transition between superhydrophobicity and superhydrophilicity can be easily observed by the alternation of UV irradiation and dark storage. The adsorption and desorption of surface water molecules on the CNT surfaces account for their tunable surface wettability, which is disclosed by X-ray photoelectron spectroscopy analysis. We also perform a series of comparison experiments to confirm the explanation of its distinctive surface wettability. This switchable wettability on the CNT film could have potential applications in areas requiring multifunctional CNT-based films.
我们描述了一种简单的方法来制造超疏水碳纳米管（CNT）薄膜，而无需任何化学修饰。通过交替进行紫外光照射和黑暗储存，可以很容易地观察到超疏水性和超亲水性之间的显著表面润湿性转变。表面水分子在 CNT 表面上的吸附和解吸解释了其可调表面润湿性，这通过 X 射线光电子能谱分析得到了揭示。我们还进行了一系列对比实验，以确认对其独特表面润湿性的解释。这种在 CNT 薄膜上的可切换润湿性可能在需要多功能 CNT 基薄膜的领域有潜在应用。
