About The Journal
  Aims and Scope
  Editorial Board
  Submit a Manuscript 
  Subscription Information
  Guidelines for Publication
  Ethics
Articles & Issues
  Search
  Issue
  Online First
  KJChE on
For Authors
  Instructions to Authors
  Ethical Responsibilities of
  Authors in KJChE
  Ethics in Publishing
  Peer Review Process
  Author's Checklist
  Copyright Transfer Form
Contact us
 
 
 
Issue
Korean Journal of Chemical Engineering,
Vol.18, No.6, 879-888, 2001
Effect of Calcination Temperature and Addition of Silica, Zirconia, Alumina on the Photocatalytic Activity of Titania
Jung KY, Park SB
Nanophase titania was prepared by sol-gel method and spray pyrolysis. We tried to elucidate the relationship between the photoactivity and the crystallite size of anatase phase. To better understand the changes in the bulk and the surface of titania as the calcination temperature is changed, EPR and photoluminescence analysis were carried out. The effect of the secondary metal oxide embedded into titania matrix on the photoactivity was also investigated. It was found that the photoactivity of titania has a linear relationship to the crystallite size. For the analysis of EPR and photoluminescence for pure titania, the increase of photoactivity with increasing the calcination temperature is due to the formation of surface active sites such as O- as well as the increase of crystallinity resulting from the removal of bulk defects. For silica/titania mixed oxide, it was found that the improvement of the thermal stability of anatase phase is important to enhance the photoactivity of titania because the prepared catalyst was calcined at a higher temperature than 700 ℃ without forming rutile phase. It was also concluded that the simultaneous increase of the surface area and the crystallinity promises to improve die photoactivity achieved by increasing the content of silica up to 60%. By the analysis of EPR and photoluminescence, it was found that the embedding of silica into titania matrix suppresses the formation of Ti3+ and produces a new active site of Ti-O-Si, which easily interacts with the oxygen. In the investigation of zirconia/titania and alumina/titania mixed oxide, it was found that the increase of the surface OH is essential to positively affect of the improved thermal stability on the photoactivity.
Keywords: Titania; Sol-Gel method; Mixed Oxide; EPR; Photoluminescence
[References]
  1. Anpo M, Aikawa N, Kubokawa Y, Che M, Louis C, Giamello E, J. Phys. Chem., 89, 5017, 1985
  2. Anpo M, Nakaya H, Kodama S, Kubodawa Y, Domen K, Onishi T, J. Phys. Chem., 90, 1633, 1986
  3. Anpo M, Yamada Y, Kubokawa Y, Coluccia S, Zecchina A, Che M, J. Chem. Soc.-Faraday Trans., 84, 751, 1988
  4. Anpo M, Tomonari M, Fox MA, J. Phys. Chem., 93, 7300, 1989
  5. Anderson C, Bard AJ, J. Phys. Chem., 99(24), 9882, 1995
  6. Anderson C, Bard AJ, J. Phys. Chem. B, 101(14), 2611, 1997
  7. Cauqui MA, Calvino JJ, Gifredo G, Esquivias L, Rodriquez-Izquierdo JM, J. Non-Cryst. Solids, 147-148, 758, 1992
  8. Cui H, Dwight K, Soled S, Wold A, J. Solid State Chem., 115, 187, 1995
  9. Do YR, Lee W, Dwight K, Wold A, J. Solid State Chem., 108, 198, 1994
  10. Fu X, Clark LA, Yang Q, Anderson MA, Environ. Sci. Technol., 30, 647, 1996
  11. Hoffmann MR, Martin ST, Choi WY, Bahnemann DW, Chem. Rev., 95(1), 69, 1995
  12. Howe RF, Graetzel M, J. Phys. Chem., 91, 3906, 1987
  13. Inoue H, Matsuyama T, Liu BJ, Sakata T, Mori H, Yoneyama H, Chem. Lett., 653, 1994
  14. Kang YC, Park SB, Lenggoro IW, Okuyama K, J. Mater. Res., 16(6), 2611, 1999
  15. Klein S, Thorimbert S, Maier WF, J. Catal., 163(2), 476, 1996
  16. Lee W, Do YR, Dwight K, Wold A, Mater. Res. Bull., 28, 1127, 1993
  17. Marchese L, Maschmeyer T, Gianotti E, Coluccia S, Thomas JM, J. Phys. Chem. B, 101(44), 8836, 1997
  18. Messing GL, Zhang SC, Jayanthi GV, J. Am. Ceram. Soc., 79, 2707, 1993
  19. Nakaoka Y, Nosaka Y, J. Photochem. Photobiol. A-Chem., 110, 299, 1997
  20. Navio JA, Colon G, Litter MI, Bianco GN, J. Mol. Catal. A-Chem., 106, 267, 1996
  21. Negishi N, Fujino M, Yamashita H, Fox MA, Anpo M, Langmuir, 10(6), 1772, 1994
  22. Nishimoto SI, Ohtani B, Kajiwara H, Kagiya T, J. Chem. Soc.-Faraday Trans., 81, 61, 1985
  23. Ohtani B, Ogawa Y, Nishimoto S, J. Phys. Chem. B, 101(19), 3746, 1997
  24. Papp J, Soled S, Dwight K, Wold A, Chem. Mater., 6, 496, 1994
  25. Porter JF, Li YG, Chan CK, J. Mater. Sci., 34(7), 1523, 1999
  26. Pruden AL, Ollis DF, J. Catal., 82, 404, 1983
  27. Rivera AP, Tanaka K, Hisanaga T, Appl. Catal. B: Environ., 3(1), 37, 1993
  28. Thangaraj A, Kumar R, Mirajkar SP, Ratnasamy P, J. Catal., 130, 1, 1991
  29. Viswanath RN, Ramasamy S, Colloids Surf. A-Physicochem. Eng. Asp., 113, 49, 1998
  30. Yamashita H, Kawasaki S, Ichihashi Y, Takeuchi M, Harada M, Anpo M, Louis C, Che M, Korean J. Chem. Eng., 15(5), 491, 1998
  31. Zhang QH, Gao L, Guo JK, Appl. Catal. B: Environ., 26(3), 207, 2000
  32. Zhang S, Fujii N, Nosaka Y, J. Mol. Catal. A-Chem., 129, 219, 1997
[Cited By]
  1. Lee BY, Park SH, Lee SC, Kang M, Park CH, Choung SJ, Korean Journal of Chemical Engineering, 20(5), 812, 2003
  2. Yu YT, Korean Journal of Chemical Engineering, 20(5), 850, 2003
  3. Kang HS, Kang YC, Park HD, Shul YG, Korean Journal of Chemical Engineering, 20(5), 930, 2003
  4. Jung KY, Lee DY, Kang YC, Park SB, Korean Journal of Chemical Engineering, 21(5), 1072, 2004
  5. Lee EJ, Lim KH, Korean Chemical Engineering Research, 50(6), 952, 2012
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.