Issue
Korean Journal of Chemical Engineering,
Vol.31, No.11, 2051-2056, 2014
Adsorption and photodegradation of methylene blue on TiO2-halloysite adsorbents
TiO2-halloysite (TiO2-HNT) composites were fabricated by depositing anatase TiO2 on the halloysite (HNT) surfaces with calcination treatment at 100, 200, 300 and 500 ℃. The obtained composites were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and X-Ray diffraction (XRD). HNT was attached with TiO2 particles or clusters in sizes of 10-30 nm. With the increasing of calcination temperature, the crystalline of anatase became more perfect, but the structure of HNT could be destroyed at 500 ℃. The adsorption and photodegradation of methylene blue (MB) by TiO2-HNTs were investigated. The kinetic adsorption fit the pseudo second-order, and the isotherm data followed the Langmuir model. The maximum adsorption capacities of MB were in the range of 38.57 to 54.29 mg/g. TiO2-HNTs exhibited an efficient photocatalytic activity in the decomposition of MB. For TiO2-HNT calcined at 300 ℃, 81.6% MB were degraded after 4 h treatment of UV irradiation.
[References]
  1. Belkassa K, Bessaha F, Marouf-Khelifa K, Batonneau-Gener I, Comparot J, Khelifa A, Colloids Surf., A, 421, 26, 2013
  2. Gong JL, Wang B, Zeng GM, Yang CP, Niu CG, Niu QY, Zhou WJ, Liang Y, J. Hazard. Mater., 164(2-3), 1517, 2009
  3. Crini G, Bioresour. Technol., 97(9), 1061, 2006
  4. Zhao MF, Liu P, Micropor. Mesopor. Mater., 112, 419, 2008
  5. Zhang AB, Pan L, Zhang HY, Liu ST, Ye Y, Xia MS, Chen XG, Colloids Surf., A, 396, 182, 2012
  6. Wang JH, Zhang XA, Zhang B, Zhao YF, Zhai R, Liu JD, Chen RF, Desalination, 259(1-3), 22, 2010
  7. Massaro M, Riela S, Cavallaro G, Gruttadauria M, Milioto S, Noto R, Lazzara G, J. Organomet. Chem., 749, 410, 2014
  8. Shamsi MH, Geckeler KE, Nanotechnology, 19, 075604, 2008
  9. Luo P, Zhao YF, Zhang B, Liu JD, Yang Y, Liu JF, Water Res., 44, 1489, 2010
  10. Nakata K, Fujishima A, J. Photochem. Photobiol. C, 13, 169, 2012
  11. Zhang YL, Guo YD, Zhang GK, Gao YY, Appl. Clay Sci., 51, 335, 2011
  12. Papoulis D, Komarneni S, Panagiotaras D, Stathatos E, Toli D, Christoforidis KC, Fernandez-Garcia M, Li HH, Yin S, Sato T, Katsuki H, Appl. Catal. B: Environ., 132, 416, 2013
  13. Wang RJ, Jiang GH, Ding YW, Wang Y, Sun XK, Wang XH, Chen WX, ACS Appl. Mater. Inter., 3, 4154, 2011
  14. Sookhakian M, Amin YM, Basirun WJ, Appl. Clay Sci., 283, 668, 2013
  15. Zhang Y, Fu LJ, Myang H, Colloids Surf., A, 414, 115, 2012
  16. Tierrablanca E, Romero-Garcia J, Roman P, Cruz-Silva R, Appl. Catal. A: Gen., 381(1-2), 267, 2010
  17. Zhang Y, Barber A, Maxted J, Lowe C, Smith R, Li TZ, Prog. Org. Coat., 76, 131, 2013
  18. Liu L, Wan YZ, Xie YD, Zhai R, Zhang B, Liu JD, Chem. Eng. J., 187, 210, 2012
  19. Wu DL, Zheng PW, Chang PR, Ma XF, Chem. Eng. J., 174(1), 489, 2011
  20. Xie YF, Qian DY, Wu DL, Ma XF, Chem. Eng. J., 168(2), 959, 2011
  21. Bulut Y, Aydin H, Desalination, 194(1-3), 259, 2006
  22. Wang JM, Li C, Zhuang H, Zhang JH, Food Control, 34, 372, 2013