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나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
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Tuning Hydrophobicity of TiO2 Layers with Silanization and Self-Assembled Nanopatterning

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Title
Tuning Hydrophobicity of TiO2 Layers with Silanization and Self-Assembled Nanopatterning
Author(s)
Trong Nghia Van; Young Keun Lee; Jaesang Lee; Jeong Young Park
Publication Date
2013-03
Journal
LANGMUIR, v.29, no.9, pp.3054 - 3060
Publisher
AMER CHEMICAL SOC
Abstract
The wettability of TiO2 layers is controlled by forming highly ordered arrays of nanocones using nanopatterning, based on self-assembly and dry etching. Nanopatterning of TiO2 layers is achieved via formation of selfassembled monolayers of SiO2 spheres fabricated using the Langmuir−Blodgett technique, followed by dry etching. Three types of TiO2 layers were fabricated using the sol−gel technique, sputtering, and thermal process in order to address the relationship between the wettability and the structure of TiO2 nanostructures. Compared to a thin film TiO2 layer, the nanopatterned TiO2 samples show a smaller static water contact angle (i.e., where the water contact angle decreases as the etching time increases), which is attributed to the Wenzel equation. When TiO2 layers are coated by 1H,1H,2H,2Hperfluorooctyltrichlorosilane, we observed the opposite behavior, exhibiting superhydrophobicity (up to contact angle of 155°) on the nanopatterned TiO2 layers. Self-assembled nanopatterning of the TiO2 layer may provide an advanced method for producing multifunctional transparent layers with self-cleaning properties.
URI
https://pr.ibs.re.kr/handle/8788114/1365
ISSN
0743-7463
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
15_IBS CA1201_Langmuir-29-9-01-3054_Tuning Hydrophobicity of TiO2 Layers with Silanization and Self-Assembled Nanopatt.pdfDownload

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