Decomposition of Formaldehyde Using TiO$_2$ Photocatalyst Beads by Circulating Fluidized Bed Chemical Vapor Deposition

CFB-CVD법으로 제조된 TiO$_2$ 광촉매 비드를 이용한 포름알데히드의 분해

  • Kim, Kyoung-Hwan (Department of Environmental Engineering, Sunchon National University) ;
  • Kim, Yu-Bong (Department of Environmental Engineering, Sunchon National University) ;
  • Lee, Seung-Young (Clean Energy System Research Center, Korea Institute of Energy Research) ;
  • Park, Jae-Hyeon (Clean Energy System Research Center, Korea Institute of Energy Research) ;
  • Lim, Jin-Young (SANETECH Co., Ltd) ;
  • Jung, Sang-Chul (Department of Environmental Engineering, Sunchon National University)
  • 김경환 (순천대학교 토목환경공학부) ;
  • 김유봉 (순천대학교 토목환경공학부) ;
  • 이승용 (에너지기술연구원 청정시스템연구센터) ;
  • 박재현 (에너지기술연구원 청정시스템연구센터) ;
  • 임진영 ((주)세인테크) ;
  • 정상철 (순천대학교 토목환경공학부)
  • Published : 2008.07.31


TiO$_2$ photocatalyst films deposited beads were prepared by circulating fluidized bed chemical vapor deposition(CFB-CVD) using TTIP(Titanium Tetra Iso-Propoxyde). Photocatalytic activities of Photocatalyst beads were evaluated by decomposition rate of formaldehyde in aqueous solution using a photo-reactor. From the result of photocatalytic degradation of formaldehyde, decomposition rate were shown gradually increased according to the increase of UV intensity, circulating fluid velocity and addition amount of H$_2$O$_2$. However the decomposition rate of formaldehyde were decreased according to the increase of initial concentration and pH value.


  1. Fox, M. A. and Dulay, M. T., 'Heterogeneous photocatalysis,' Chem. Rev., 93, 341-357(1993)
  2. Linsebigler, A. L., Lu, G., and Yates, J. T. Jr., 'Photocatalysis on $TiO_2$ surface: principles, mechanisms, and selected results,' Chem. Rev., 95, 735-758(1995)
  3. Palmisano, L., Augugliaro, V., Campostrini, R., and Schiavello, M., 'A Proposal for the Quantitative Assessment of Heterogeneous Photocatalytic Processes,' J. Catal., 143, 149-154(1993)
  4. 정상철, 라덕관, 안호근, '화학기상증착에 의한 $TiO_2$ 광촉매 막의 합성,' 대한환경공학회지, 23(8), 1389-1394 (2001)
  5. 정상철, 김상채, 서성규, '화학기상증착법으로 제조한 $TiO_2$막의 광촉매 활성,' 화학공학, 39(4), 385-389(2001)
  6. Jung, S. C. and Imaishi, N., 'Preparation, crystal structure, and photocatalytic activity of TiO2 films by chemical vapor deposition,' Korean J. Chem. Eng., 18(6), 867- 872(2001)
  7. Jung, S. C., Kim, S. J., Imaishi, N., and Cho, Y. I., 'Effect of $TiO_2$ thin film thickness and specific surface area by low-pressure metal-organic chemical vapor deposition on photocatalytic activities,' Appl. Catalysis, 55, 253-257(2004)
  8. Jung, S. C., Kim, B. H., Kim, S. J., Imaishi, N., and Cho, Y. I., 'Characterization of $TiO_2$ photocatalyst films deposited by CVD method and its photocatalytic activity,' Chem. Vap. Deposition, 11(3), 137-141(2005)
  9. 임남윤, 이승용, 박재현, 곽지니, 박해웅, '유동층 화학기 상증착(FB-CVD)으로 제조한 광촉매 박막증착 비드의 조 업변수에 따른 반응성,' Korean Chem. Eng. Res., 44(3), 300-306(2006)
  10. Lee, S. Y., Park, J. H., and Joo, H. K., 'Visible lightsensitized photocatalyst immobilized on beads by CVD in a fluidizing bed,' Solar Energy Material & Solar Cells, 90, 1905-1914(2006)
  11. Park, J. H., Bae, D. H., Lee, S. Y., Kwak, J. N., Park H. W., and Lim, J. Y., 'Large-scale production of titania nano-coated silica-gel beads by fluidized bed chemical vapor deposition,' Korea J. Chem. Eng., 24(2), 347-349(2007)
  12. 김경환, 김유봉 이승용, 박재현, 임진영, 정상철, 'FBCVD법으로 제조한 $TiO_2$ 광촉매의 활성,' 한국환경기술학회지, 9(1), 1-8(2008)
  13. Hoffmann, M. R., Martin, S. T., Choi, W., and Bahnemann, D. W. 'Environmental Applications of Semicondutor Photocatalysis,' Chem, Rev., 95, 69-96(1995)