Wettability and photocatalysis of CF4 plasma etched titania films of honeycomb structure

Do Yeon Kim; Jung Jae Park; Jong Gun Lee; Maikel F A M Van Hest; Suk Goo Yoon

doi:10.1016/j.ceramint.2013.04.094

Wettability and photocatalysis of CF₄ plasma etched titania films of honeycomb structure

Do Yeon Kim, Jung Jae Park, Jong Gun Lee, Maikel F A M Van Hest, Suk Goo Yoon

Department of Mechanical Engineering

Research output: Contribution to journal › Article

4 Citations (Scopus)

Abstract

We prepared titania films by aerosol deposition (AD), in which titania powder is supersonically accelerated for deposition onto a substrate. These AD titania films exhibited hydrophilicity and photocatalysis under UV exposure. However, after surface modification by CF₄ plasma-etching, the films showed higher hydrophilicity and lower photocatalytic effect. After sufficient modification, they exhibited superhydrophilicity, which was induced by the presence of fluorine. This type of surface modification is useful for promoting hydrophilicity under no UV light exposure.

Original language	English
Pages (from-to)	9737-9742
Number of pages	6
Journal	Ceramics International
Volume	39
Issue number	8
DOIs	https://doi.org/10.1016/j.ceramint.2013.04.094
Publication status	Published - 2013 Dec 1

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Keywords

Aerosol deposition
CF etching
D. TiO
Superhydrophilic
UV-light

ASJC Scopus subject areas

Ceramics and Composites
Process Chemistry and Technology
Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films
Materials Chemistry

Cite this

Kim, D. Y., Park, J. J., Lee, J. G., Van Hest, M. F. A. M., & Yoon, S. G. (2013). Wettability and photocatalysis of CF₄ plasma etched titania films of honeycomb structure. Ceramics International, 39(8), 9737-9742. https://doi.org/10.1016/j.ceramint.2013.04.094

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AB - We prepared titania films by aerosol deposition (AD), in which titania powder is supersonically accelerated for deposition onto a substrate. These AD titania films exhibited hydrophilicity and photocatalysis under UV exposure. However, after surface modification by CF4 plasma-etching, the films showed higher hydrophilicity and lower photocatalytic effect. After sufficient modification, they exhibited superhydrophilicity, which was induced by the presence of fluorine. This type of surface modification is useful for promoting hydrophilicity under no UV light exposure.

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10.1016/j.ceramint.2013.04.094