Abstract
A TiO 2 nanostructured thin film was prepared by a simple pull-out coating method. The as-prepared TiO 2 nanostructured thin film shows under-oil superhydrophobicity with water contact angle(WCA) of 160°. Upon UV irradiation for 60 min with humidity of 20% in air, TiO 2 nanostructured thin film can switch from under-oil superhydrophobicity to superhydrophilicity. When the UV-irradiated TiO 2 nanostructured thin film was heated at 100 ℃ for 70 min, the thin film can restore initial under-oil superhydrophobic state. The results indicate the reversible control of under-oil superhydrophobicity to superhydrophilicity on TiO 2 nanostructured thin film can be realized by alternation of UV irradiation and heating process. The reversible control of under-oil water super-wetting on TiO 2 nanostructured thin film can be ascribed to the cooperative effect between the surface nanostructure and the chemical composition variation.
| Translated title of the contribution | Reversible Control of Under-oil Superhydrophobicity to Superhydrophilicity on TiO 2 Nanostructured Thin Film |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 2621-2626 |
| Number of pages | 6 |
| Journal | Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities |
| Volume | 39 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1 Dec 2018 |
| Externally published | Yes |
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