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http://dx.doi.org/10.4191/KCERS.2006.43.2.114

Characteristics of Nano-Size Au Fine Particles Doped TiO2 Thin Films by Sol-Gel Method  

Park, Min-Jung (Department of Materials Science and Engineering, Kyungnam University)
Koo, Se-Na (Department of Materials Science and Engineering, Kyungnam University)
Lee, Kyoung-Seok (Department of Materials Science and Engineering, Kyungnam University)
Mun, Chong-Soo (Department of Advanced Materials Engineering, Kyungnam University)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.2, 2006 , pp. 114-120 More about this Journal
Abstract
Nano-size Au particle doped $TiO_2$ films were prepared with $Ti(OC_3H_7^i)_4$, polyvinylpyrrolidone(PVP), $HAuCl_4$ and $C_3H_7OH$ etc. by sol-gel method. $TiO_2$ gel films were obtained by the dip-coating method on the $SiO_2$ glass substrates, and then heat-treated at $700^{\circ}C$ for 10 min. The thickness of $TiO_2$ films were $0.7\~1.8\;{\mu}m$. It was found that the thickness of films prepared from PVP containing solution was about $2\~8$ times higher values than that of thin films without PVP. The size of Au particles doped in the films were about $350\~750\;nm$. Nano-size Au particle dispersed $TiO_2$ films showed high absorption peak at visible region 450nm, which made them good candidates for non-linear optical materials and photo-catalytic materials. The contact angle of $TiO_2$ film for water was $12.5^{\circ}$, and therefore it is clear that $TiO_2$ films have very high hydrophilic properties and the self-cleaning effects.
Keywords
Nano-size; Photo-catalysis; Contact angle; Hydrophilic; Self-cleaning effects;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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