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http://dx.doi.org/10.3740/MRSK.2007.17.3.125

Super Hydrophilic Properties of SiO2-TiO2 Thin Film Prepared by Sol-Gel Method  

Park, Min-Jung (Department of Material Science and Engineering, Kyungnam University)
Lee, Kyoung-Seok (Department of Material Science and Engineering, Kyungnam University)
Kang, Jong-Bong (Department of Advanced Materials Engineering, Kyungnam University)
Mun, Chong-Soo (Department of Advanced Materials Engineering, Kyungnam University)
Publication Information
Korean Journal of Materials Research / v.17, no.3, 2007 , pp. 125-131 More about this Journal
Abstract
[ $TiO_{2}-solution$ ] was aaded in $SiO_{2}-solution$ by various composition. $SiO_{2}-TiO_{2}$ thin films were obtained by the dip-coating method on the $SiO_{2}$ glass substrates, and then heat-treated at various temperature. Nano-size $TiO_{2}$ particles dispersed $SiO_{2}-TiO_{2}$ films showed absorption peak by quantum size effect at short wavelength region $350{\sim}400nm$, which made them good candidates for non-linear optical materials and photo-catalytic materials. The thickness of $SiO_{2}-TiO_{2}$ films were $300{\sim}430nm$. The contact angle of $SiO_{2}-TiO_{2}$ films for water was $5.3{\sim}47.9^{\circ}$, and therefore it is clear that $SiO_{2}-TiO_{2}$ films have super hydrophilic properties and the self-cleaning effects.
Keywords
Quantum size effect; photo-catalytic; super hydrophilic; self-cleaning effect;
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