DOI QR코드

DOI QR Code

Effects of Calcination Temperature on Ti02 Photocatalytic Activities

TiO2 광촉매 활성에서 소성온도의 영향

  • Kim Seung-Min (Department of Chemistry, Keimyung University) ;
  • Yun Tae-Kwan (Department of Chemistry, Keimyung University) ;
  • Hong Dae-Ii (Department of Chemistry, Keimyung University)
  • Published : 2005.09.01

Abstract

The nanosized $TiO_2$ photocatalysts were prepared by the hydrolysis of $TiCl_4$ and calcined at different temperatures. The resulting materials were characterized by TGA, DSC, XRD, and TEM testing techniques. XRD, TEM, and BET measurements indicated that the particle size of $TiO_2$ was increased with rise of calcination temperature and surface area was decreased with rise of it. The prepared $TiO_2$ photocatalysts were used for the photocatalytic degradation of congo red. The effects of calcination temperature, $TiO_2$ loading, the initial concentration of congo red, and usage frequencies were investigated and the rate constants were determined by regressing the experimental data. Calcination is an effective treatment to increase the photo activity of nanosized $TiO_2$ photocatalysts resulting from the improvement of crystallinity. The optimum calcination temperature of the catalyst for the efficient degradation of congo red was found to be $400^{\cric}C$. The rate constant was decreased with increase in the initial concentration of congo red and increased with increase in the $TiO_2$ loading. In the case of $TiO_2$ photocatalysts, the photocatalytic activity wasn't greatly affected by the usage frequencies.

Keywords

References

  1. 신항식, 임재림, 1995, 고급산화법을 이용한 Trichloroethylene 함유 폐수의 처리(I), 대한환경공학회지, 17(12), 1079-1088
  2. Wang, Y. and C. S. Hong, 1999, Effect of hydrogen peroxide, periodate and per sulfate on phtocatalysis of 2-chlorobiphenyl in aqueous $TiO_2$ suspensions, Wat. Res., 33(9), 2031-2036 https://doi.org/10.1016/S0043-1354(98)00436-9
  3. 전희동, 1994, $TiO_2$ 광촉매를 이용한 고도산화 처리기술, 대한환경공학회지, 16(7), 809-818
  4. Yeber, M., J. Rodriguez, J. Freer, J. Baeza, N. Duran and H. D. Mansilla, 1999, Advanced oxidation of a pulp mill bleaching wastewater, Chemosphere, 33, 1679-1688
  5. Roberto, A., C. Vincenzo, I. Amedeo and M. Raffaele, 1999, Advanced oxidation processess (AOP) for water purification and recovery, Catal. Tod., 53, 51-59 https://doi.org/10.1016/S0920-5861(99)00102-9
  6. Teel, A. L., C. R. Warberg, D. A. Atkinson and R. J. Watts, 2001, Comparison of mineral and soluble iron fenton's catalysts for the treatment of trichloroethylen, Wat. Res., 35(4), 977-984 https://doi.org/10.1016/S0043-1354(00)00332-8
  7. Arslan, I., I. A. Balcioglu and D. W. Bahnemann, 2000, Advanced chemical oxidation of reactive dyes in simulated dyehouse effluents by ferrioxalate-fenton/UV-A and $TiO_2$/UV-A processes, Dyes and Pigments, 47(3), 207-208 https://doi.org/10.1016/S0143-7208(00)00082-6
  8. Fernandez, A., G. Lassaletta, V. M. Jimenez, A. Justo, A. R. G. Elipe, J. M. Herrmann, H. Tahiri and Y. A. Ichou, 1995, Preparation and characterization of $TiO_2$ photocatalysts supported on various rigid supportsiglass, quartz and stainless stell), Comparative studies of photocatalytic activity in water purification, App, Catal. B: Environmental, 7(1 -2), 49-63 https://doi.org/10.1016/0926-3373(95)00026-7
  9. Byrne, J. A, B. R. Eggins, N. M. D. Brown, B. McKinney and M. Rouse, 1995, Immobilisation of $TiO_2$ powder for the treatment of polluted water, App, Catal. B: Environmental, 17(1-2), 25-36(1998) https://doi.org/10.1016/S0926-3373(97)00101-X
  10. Herrmann, J. M., H. Tahiri, C. Guillard and P. Pichat, 1999, Photocatalytic degradation of aqueous hydroxy-butandioic acid (malic acid) in contact with powdered and supported titania in water, Catal. Tod., 54(1), 131-141 https://doi.org/10.1016/S0920-5861(99)00175-3
  11. Lee, D. K. and I. C. Cho, 2001, Characterization of $TiO_2$ thin film immobilized on glass tube and its application to PCE photocatalytic destruction, Microchem. J., 68(2-3), 215-223 https://doi.org/10.1016/S0026-265X(00)00147-8
  12. Zhang, Q., L. Gao and J. Guo, 1999, Preparation and characterization of nanosized $TiO_2$ powers from aqueous $TiCl_4$ solution, Nanostructured Materials, 11(8), 1293-1300 https://doi.org/10.1016/S0965-9773(99)00421-3
  13. Bacsa, R. R. and J. Kiwi, 1998, Effect of rutile phase on the photocatalytic properties of nano-crystalline titania during the degradation of p-cournaric acid, App. Catal. B: Environmental, 16(6), 19-29 https://doi.org/10.1016/S0926-3373(97)00058-1
  14. Michele, L., V. Andrea and S. Annabella, 2001, Structure and energetics of stoichiometric $TiO_2$ anatase surface, Phys, Rev. B63, 1554091-1554099
  15. Camargo, A. C., J. A. Igualada, R. Llusar and J. Andres, 1996, An ab initio perturbed ion study of structural properties of $TiO_2,\;SnO_2,\;and\;GeO_2$ rutile lattices, Chem. Phys., 212, 381-391 https://doi.org/10.1016/S0301-0104(96)00228-5
  16. San, N., A. Hatipoglu, G. Kocturk and Z. Cinar, 2001, Prediction of primary intermediates and the photodegradation kinetics of 3-aminophenol in aqueous $TiO_2$ suspensions, J. Photochem. Photobiol. A, 225-232