화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.22, No.3, 382-386, May, 2005
DOI10.1007/BF02719415  Export Citation
Degradation of Chlorophenol by Photocatalysts with Various Transition Metals
Il-Kyu Kim, Hyun-Jung Ha, Sang-Keun Lee, and Jea-Keun Lee†
  • Dept. of Environ. Eng., Pukyong National University, Busan 608-737, Korea
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In this research, the photocatalytic degradation of 4-chlorophenol (4-CP) in TiO2 aqueous suspension was studied. TiO2 photocatalysts were prepared by sol-gel method. The dominant anatase-structure on TiO2 particles was observed after calcining the TiO2 gel at 500 ℃ for 1 hr. Photocatalysts with various transition metals (Fe, Cu, Nd, Pd and Pt) loading were tested to evaluate the effect of transition metal impurities on photodegradation. The photocatalytic degradation in most cases follows first-order kinetics. The maximum photodegradation efficiency was obtained with TiO2 dosage of 0.4 g/L, retention time of 1 min and air flow rate of 2,500 cc/min. The photodegradation efficiency with Pt-TiO2 or Pd-TiO2 is higher than pure TiO2 powder. The optimal content value of Pt and Pd is 2 wt%. However, the photodegradation efficiency with Fe(1.0 wt%)-TiO2 and Cu(1.0 wt%)-TiO2 is lower than pure TiO2 powder.
Keywords:Photocatalytic Decomposition;4-Chlorophenol;Titania Oxide;Transition Metal
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