화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.8, No.2, 156-161, March, 2002
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Photocatalytic Degradation of Gas-Phase Methanol and Toluene Using Thin-Film TiO2 Photocatalyst: I. Influence of Water Vapor, Molecular Oxygen and Temperature
Sang Bum Kim†, Hyun Tae Jang1, and Sung Chang Hong2
  • Department of Chemical Engineering, Korea University, Seoul 136-701, Korea
  • 1Department of Chemical Engineering, Hanseo University, Seosan 356-706, Korea
  • 2Department of Environmental Engineering, Kyonggi University, Suwon 442-760, Korea
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In the present work, photocatalytic degradation of volatile organic compounds (VOCs) including gas-phase methanol and toluene over illuminated TiO2 was closely examined in a batch photo-reactor as a function of water vapor, molecular oxygen, and temperature. Water vapor enhanced the photocatalytic degradation rate of toluene, while there was an optimum water vapor concentration in decomposing methanol. In pure nitrogen atmosphere, it showed lower photocatalytic degradation rate than in air and pure oxygen. Thus, the effect of molecular oxygen on photocatalytic degradation of methanol and toluene was significant. As for the influence of reaction temperature, it was found that photocatalytic degradation was more effective at the room temperature than at an elevated temperature for both compounds.
Keywords:photocatalytic degradation;thin-film TiO2 photocatalyst;gas-phase;volatile organic compound;batch scale of photo-reactor
  1. EPA, Total exposure assessment methodology (TEAM) study, Report 600/6-87/002a, Environmental Protection Agency, Washington DC (1987)
  2. Fox MA, Dulay MT, Chem. Rev., 93(1), 341 (1993)
  3. Anpo M, Yamashita H, Matsuoka M, Park DR, Shul YG, Park SE, J. Ind. Eng. Chem., 6(2), 59 (2000)
  4. Hong SS, Ju CS, Lim CG, Ahn BH, Lim KT, Lee GD, J. Ind. Eng. Chem., 7(2), 99 (2001)
  5. Blake NR, Griffin GL, J. Phys. Chem., 92, 5697 (1988)
  6. Sauer ML, Ollis DF, J. Catal., 158(2), 570 (1996) 
  7. Ibusuki T, Takeuchi K, Atmos. Environ., 20(9), 1711 (1986)
  8. Obee TN, Brown RT, Environ. Sci. Technol., 29(5), 1223 (1995)
  9. Levenspiel O, in Chemical Reaction Engineering, 2nd Edn., John Wiley & Sons, Inc., New York, 70 (1972)
  10. Luo Y, Ollis DF, J. Catal., 163(1), 1 (1996)
  11. D'Hennezel O, Pichat P, Ollis DF, J. Photochem. Photobiol. A-Chem., 118, 197 (1998)
  12. Wang KH, Tsai HH, Hsieh YH, Appl. Catal. B: Environ., 17(4), 313 (1998)
  13. Mark RN, Willian AJ, Danial MB, Thomas AM, in Photocatalytic purification and treatment of water and air, Elsevier Science Publisher, 387 (1993)
  14. Augugliaro V, Coluccia S, Loddo V, Marchese L, Martra G, Palmisano L, Schiavello M, Appl. Catal. B: Environ., 20(1), 15 (1999)
  15. Chen DW, Ray AK, Appl. Catal. B: Environ., 23(2-3), 143 (1999)
  16. Mendez-Roman R, Cardona-Martinez N, Catal. Today, 40(4), 353 (1998)
  17. Munuera G, Rives-Arnau V, Saucedo A, J. Chem. Soc.-Faraday Trans., 175, 736 (1979)
  18. Miller R, Fox R, in The first international conference on TiO2 photocatalytic purification and treatment of water and air, Elsevier, London, Ontario, Amsterdam, New York, 573 (1993)
  19. Fox MA, Aldel-Wahab AA, Kim YS, Dulay MJ, J. Catal., 126, 693 (1990)
  20. Pichat P, Hermann JM, in Photocatalysis: Fundamentals and applications, N. serpone and Pelizzetti E Ed, John Wiley & Sons, N.T.C., 217 (1989)
  21. Alberici RM, Jardim WE, Appl. Catal. B: Environ., 14(1-2), 55 (1997)