Issue

Vol. 25 No. 2 (2013): Vol 25 Issue 2

Copyright (c) 2013 AJC

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Photocatalytic Degradation of Methyl Orange in Aqueous TiO2 Suspensions

https://doi.org/10.14233/ajchem.2013.13539
P. Niu
Key Laboratory of Coordination Chemistry and Functional Materials in Universities of Shandong (Dezhou University), Dezhou, P.R. China

Corresponding Author(s) : P. Niu

np68@sina.com

Asian Journal of Chemistry, Vol. 25 No. 2 (2013): Vol 25 Issue 2

Abstract

The degradation of methyl orange was studied using advanced oxidation process by exposed to UV irradiation in the presence of TiO2. TiO2 or UV light has a negligible effect when used alone. The effect of TiO2 dosage, initial pH of dye solution and the solution area exposed to UV light were studied. It is found that in the investigated range, degradation rate of methyl orange increases with the increase in TiO2 concentration and exposure area of solution. Acidic media is fvaourable to methyl orange degradation. The photodestruction of methyl orange is significantly inhibited by addition of KI as active holes scavenger at pH 2. However, the roles of ·OH and H2O2 are increased gradually as the increase of initial pH value of dye solution.

Keywords

TiO2 Photocatalytic degradation Methyl orange Active species
Niu, P. (2012). Photocatalytic Degradation of Methyl Orange in Aqueous TiO2 Suspensions. Asian Journal of Chemistry, 25(2), 1103–1106. https://doi.org/10.14233/ajchem.2013.13539
Download Citation
Endnote/Zotero/Mendeley (RIS)
BibTeX
References
  1. A. Fujishima and K. Honda, Nature, 238, 37 (1972).
  2. F. Han, V.S.R. Kambala, M. Srinivasan, D. Rajarathnam and R. Naidu, Appl. Catal. A, 359, 25 (2009).
  3. U.I. Gaya and A.H. Abdullah, J. Photochem. Photobiol. C, 9, 1 (2008).
  4. A. Aguedach, S. Brosillon, J. Morvan and E.K. Lhadi, J. Hazard. Mater., 150, 250 (2008).
  5. S. Chatterjee, S.R. Lim and S.H. Woo, Chem. Eng. J., 160, 27 (2010).
  6. Y. Yang, Y.H. Guo, C.W. Hu, C.J. Jiang and E.B. Wang, J. Mater. Chem., 13, 1686 (2003).
  7. Z. Zainal, C.Y. Lee, M.Z. Hussein, A. Kassim and N.A. Yusof, Asian J. Chem., 17, 1717 (2005).
  8. M.A. Behnajady, N. Modirshahla and M. Shokri, Chemosphere, 55, 129 (2004).
  9. Y.X. Chen, S.Y. Yang, K. Wang and L.P. Lou, J. Photochem. Photobiol. A, 172, 47 (2005).
  10. X.W. Zhang, D.D. Sun, G.T. Li and Y.Z. Wang, J. Photochem. Photobiol. A, 199, 311 (2008).
  11. G.T. Li, K.H. Wong, X.W. Zhang, C. Hu, J.C. Yu, R.C.Y. Chan and P. Wong, Chemosphere, 76, 1185 (2009).
  12. J. Cao, B.Y. Xu, B.D. Luo, H.L. Lin and S.F. Chen, Appl. Surf. Sci., 257, 7083 (2011).
  13. C.A. Coutinho and V.K. Gupta, J. Colloid Interf. Sci., 333, 457 (2009).
  14. S. Al-Qaradawi and R.S. Salman, J. Photochem. Photobiol. A, 148, 161 (2002).
  15. S. Mozia, M. Tomaszewska and A.W. Morawski, Desalination, 185, 449 (2005).
  16. K. Parida, N. Sahu, N. Biswal, B. Naik and A. Pradhan, J. Colloid Interf. Sci., 318, 231 (2008).
  17. M.L. Huang, C.F. Xu, Z.B. Wu, Y.F. Huang, J.M. Lin and J.H. Wu, Dyes Pigments, 77, 327 (2008).
  18. L.C. Chen, F.R. Tsai and C.M. Huang, J. Photochem. Photobiol. A, 170, 7 (2005).
  19. Y.R. Smith, A. Kar and V. Subramanian, Ind. Eng. Chem. Res., 48, 10268 (2009).
  20. Y.R. Zhang, J. Wan and Y.Q. Ke, J. Hazard. Mater., 177, 750 (2010).
  21. L.G. Devi and K.M. Reddy, Appl. Surf. Sci., 256, 3116 (2010).
  22. P. Niu and J.C. Hao, Langmuir, 27, 13590 (2011).
  23. S. Haji, B. Benstaali and N. Al-Bastaki, Chem. Eng. J., 168, 134 (2011)
Read More
Author biographies is not available.
Download
PDF
Statistic
Read Counter : 2 Download : 1