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Title: Transparent superhydrophobic/superhydrophilic TiO2-based coatings for self-cleaning and anti-fogging
Authors: Lai, Yuekun
Tang, Yuxin
Gong, Jiaojiao
Gong, Dangguo
Lin, Changjian
Chen, Zhong
Chi, Lifeng
Keywords: DRNTU::Engineering::Materials
Issue Date: 2012
Source: Lai, Y., Tang, Y., Gong, J., Gong, D., Chi, L. F., Lin, C., et al. (2012). Transparent superhydrophobic/superhydrophilic TiO2-based coatings for self-cleaning and anti-fogging. Journal of Materials Chemistry, 22(15), 7420-7426.
Series/Report no.: Journal of materials chemistry
Abstract: A stable titanate nanobelt (TNB) particle suspension was prepared by a hydrogen-bond-driven assembly of pre-hydrolysed fluoroalkylsilane (FAS) on its surface. A one-step electrophoretic deposition was applied to fabricate a transparent cross-aligned superhydrophobic TNB/FAS film on a conducting glass substrate. By controlling the deposition time, we have shown the transition between a “sticky” hydrophobic state (high contact angle with strong adhesion) and a “sliding” superhydrophobic state (high contact angle with weak adhesion). The optical transmittance can reach as high as 80% throughout most of the visible light region of the spectrum. These coatings have also displayed high chemical stability and self-cleaning ability. Upon heating the hydrophobic coatings at 500 °C, the TNB coating transforms into a porous TiO2(B) structure with superhydrophilic behavior and could be used for anti-fogging applications. With this TiO2-based system, we have demonstrated three different wetting states: superhydrophobicity with weak adhesion, high hydrophobicity with strong adhesion, and superhydrophilicity with immediate water spreading. Moreover, this work has also demonstrated superhydrophobic TNB/FAS films with high chemical stability and good self-cleaning performance and superhydrophilic pore-like TiO2(B) films with rapid water spreading and excellent anti-fogging ability.
DOI: 10.1039/c2jm16298a
Rights: © 2012 The Royal Society of Chemistry.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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