화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.9, No.4, 440-446, October, 2003
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Enhanced Photocatalytic Activity of TiO2 by Metal Doping for Degradation of VOCs in Air
Sang Bum Kim†, Jun Yub Lee, Hyun Tae Jang1, Wang Seog Cah2, and Sung Chang Hong3
  • Department of Chemical Engineering, Korea University, Seoul 136-701, Korea
  • 1Department of Chemical Engineering, Hanseo University, Choongnam 356-820, Korea
  • 2Department of Civil and Environmental Engineering, Kunsan Nat'l University, Kunsan 573-701, Korea
  • 3Department of Environmental Engineering, Kyonggi University, Suwon-si, Kyonggi-do 442-760, Korea
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The present work examined improving the photocatalytic activity of TiO2 by metal doping for the degradation of volatile organic compounds (VOCs), including gaseous trichloroethylene (TCE), acetone, methanol and toluene. The level of photocatalytic activity was determined to the type of dopant metal and VOC. To decompose TCE and acetone, palladium-doped TiO2 was found to be the best, whereas tungsten-doped TiO2 was good for methanol and toluene. When the effect of the heat treatment temperature on the metal-doped TiO2 was investigated, the photocatalytic degradation rate for acetone was highest for the doped TiO2 heated at 350 ℃, whereas the optimum temperature was found to be 450 ℃ for the doped TiO2 used to decompose the other VOCs. As regards the dopant level, the optimum amounts of metal were 1.0 wt% of palladium for TCE and acetone, 1.0 wt% of tungsten for toluene, and 1.5 wt% of tungsten for methanol.
Keywords:Photocatalytic degradation;trichloroethylene;acetone;methanol;toluene;metal-doped TiO2
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