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http://dx.doi.org/10.4191/KCERS.2005.42.1.007

Synthesis and Photocatalytic Activity of TiO2-ZrO2 Nano-Sized Powders by Sol-Gel Process  

Han, Jae-Kil (School of Advanced Materials Engineering, Kongju National University)
Saito Fumio (Institute of Multidisciplinary Research for Advanced Materials, Tohoku University)
Park, Jong-Gu (Nano Materials Technology Center, Korea Institute of Science and Technology)
Lee, Byong-Taek (School of Advanced Materials Engineering, Kongju National University)
Publication Information
Journal of the Korean Ceramic Society / v.42, no.1, 2005 , pp. 7-10 More about this Journal
Abstract
[ $TiO_{2}-ZrO_{2}$ ] powders were successfully synthesized by the sol-gel process using titanium iso-propoxide as a precursor. The amorphous $TiO_{2}$ particles, 70 nm in size, homogenously adhered to the surface of $ZrO_{2}$ the powders. After calcination at $450^{circ}C$, most of the $TiO_{2}$ powders appeared as an anatase type, whereas they changed to a rutile phase at $750^{circ}C$. For comparison of photocata­lytic activity, $TiO_{2}-ZrO_{2}$ nano-sized powders calcined at $450^{circ}C,\;600^{circ}C,\;and\;750^{circ}C$ were used. In the $TiO_{2}-20wt\%$ $ZrO_{2}$ powders cal­cined at $450^{circ}C$, there was excellent removal efficiency of Methyl Orange (MO). For the calcination temperature increased, $TiO_{2}­ZrO_{2}$ nano-sized powders increased $ZrO_{2}$ contents showed the good photoactivity for the photooxidation of MO.
Keywords
Nanocrystalline; Methyl orange; Photocatalytic activity; Sol-gel method;
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