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http://dx.doi.org/10.3807/KJOP.2006.17.3.296

Properties of Low-Temperature Sol-Gel TiO2 Thin Films with Catalyst Content  

Hong, Hyun-Joo (Department of physics, University of Ulsan)
Heo, Min-Chan (Department of physics, University of Ulsan)
Hahn, Sung-Hong (Department of physics, University of Ulsan)
Kim, Eui-Jung (Department of Engineering, University of Ulsan)
Lee, Chung-Woo (IHL)
Joo, Jong-Hyun (IHL)
Publication Information
Korean Journal of Optics and Photonics / v.17, no.3, 2006 , pp. 296-302 More about this Journal
Abstract
ILow-temperature $TiO_2$ sol was synthesized with various catalyst contents by using a sol-gel method. $TiO_2$ thin films were produced by a dip-coating method and their optical, structural and photocatalytic properties were examined. Transmittance of $TiO_2$ thin films with 0.10 mol, 0.25 mol, 0.50 mol and 0.75 mol catalyst content showed high transmittance in the visible range. XRD results showed the anatase-to-rutile phase transition was accelerated with increasing catalyst content and the crystallinity size of the $TiO_2$ thin films increased with increasing catalyst content. SEM results indicated that the particle size of the $TiO_2$ thin films was the smallest with catalyst content of 0.25 mol. Photocatalytic results showed that methylene blue was completely decomposed in the presence of anatase film prepared with 0.10 mol, 0.25 mol and 0.50 mol catalyst content.
Keywords
$TiO_2$ thin film; Sol-gel method; Optical property; Structural property; Low-temperature calcination; Photoactivity;
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