화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.15, No.1, 77-81, January, 2009
DOI10.1016/j.jiec.2008.08.008  Export Citation
Impact of quenching process on the surface defect of titanium dioxide for hydrogen production from photocatalytic decomposition of water
Waraporn Chatpaisalsakul, Okorn Mekasuwandumrong1, Joongjai Panpranot, Chairit Satayaprasert, and Piyasan Praserthdam†
  • Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
  • 1Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhonpathom 73000, Thailand
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Nanocrystalline titania was prepared by solvothermal reaction of titanium butoxide in toluene at 300 ℃ for 2 h. Thus obtained-powder was calcined at 300 8C in box furnace for 1 h and then quenched in various media at different temperature. The physiochemical properties of sampleswere investigated by using Xray diffraction (XRD), nitrogen adsorption, CO2-Temperature Programmed Desorption (CO2-TPD), UV-visible scanning spectrophotometer, Transmission electron microscopy (TEM) and electron spin resonance spectroscopy (ESR) techniques. All physical properties such as phase, BET surface area and crystal size were not changed after quenching processes. While the CO2-TPD and ESR results indicate the changing of Ti3+ contents on the surface of TiO2 after quenching process. The amounts of Ti3+ increased as the quenching temperature decreased. Photocatalytic decomposition of water was carried out to evaluate the catalytic activity of quenched TiO2. The activity of quenched-powder increased corresponding to the increasing of Ti3+ contents increased by following order: air at 77 K > air at RT > air at 373 K > 30 wt% H2O2 at RT = 30 wt% H2O2 at 373 K > H2O at RT > H2O at 373 K.
Keywords:TiO2;Quenching;Surface defect;Photocatalytic;Hydrogen production
  1. Fujishima A, Rao TN, Tryk DA, Journal of Photochemistry and Photobiology C: Photochemistry Reviews, 1, 1 (2000)
  2. Oh WC, Jung AR, Ko WB, J. Ind. Eng. Chem., 13(7), 1208 (2007)
  3. Kim SY, Chang TS, Lee DK, Shin CH, J. Ind. Eng. Chem., 11(2), 194 (2005)
  4. Lee MS, Lee JD, Hong SS, J. Ind. Eng. Chem., 11(4), 495 (2005)
  5. Fujishima A, Zhang X, Comptes Rendus Chimie, 9, 750 (2006)
  6. Deng XY, Yue YH, Gao Z, Appl. Catal. B: Environ., 39(2), 135 (2002)
  7. Liu H, Ma HT, Li XZ, Li WZ, Wu M, Bao XH, Chemosphere, 50, 39 (2003)
  8. Amama PB, Itoh K, Murabayashi M, Appl. Catal. B: Environ., 37(4), 321 (2002)
  9. Torimoto T, Fox RJ, Fox MA, J. Electrochem. Soc., 143(11), 3712 (1996)
  10. Diebold U, Surface Science Reports, 48, 53 (2003)
  11. Shklover V, Nazeeruddin MK, Zakeeruddin SM, Barbe C, Kay A, Haibach T, Steurer W, Hermann R, Nissen HU, Gratzel M, Chemistry of Materials, 9, 430 (1997)
  12. Henderson MA, Surface Science, 355, 151 (1996)
  13. Payakgul W, Mekasuwandumrong O, Pavarajarn V, Praserthdam P, Ceramic International 31 (2005) 391-397
  14. Thompson TL, Diwald O, Yates JT, J. Phys. Chem. B, 107(42), 11700 (2003)
  15. Suriye K, Praserthdam P, Jongsomjit B, Appl. Surf. Sci., 253(8), 3849 (2007)
  16. Howe RF, Gratzel M, Journal of Physical Chemistry, 89, 4495 (1985)
  17. Lee SK, Robertson PKJ, Mills A, McStay D, Elliott N, McPhail D, Appl. Catal. B: Environ., 44(2), 173 (2003)
  18. Nakaoka Y, Nosaka Y, Journal of Photochemistry and Photobiology A: Chemistry, 110, 299 (1997)
  19. Tilocca A, Selloni A, J. Phys. Chem. B, 108(15), 4743 (2004)
  20. Park DR, Zhang JL, Ikeue K, Yamashita H, Anpo M, J. Catal., 185(1), 114 (1999)
  21. Jeon MK, Park JW, Kang M, J. Ind. Eng. Chem., 13(1), 84 (2007)
  22. Henderson MA, Epling WS, Peden CHF, Perkins CL, J. Phys. Chem. B, 107(2), 534 (2003)