Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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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)
  • Published : 2005.01.01
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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.

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References

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