Journal of the Iranian Chemical Society

, Volume 6, Issue 3, pp 570–577

Photodegradation of Congo red in aqueous solution on ZnO as an alternative catalyst to TiO2


DOI: 10.1007/BF03246536

Cite this article as:
Movahedi, M., Mahjoub, A.R. & Janitabar-Darzi, S. JICS (2009) 6: 570. doi:10.1007/BF03246536


In this research, the efficiency of ZnO and TiO2 was compared by photocatalytic degradation of Congo red azo dye. The effects of some parameters such as pH, dye concentration and irradiation time on the degradation rate of dye solution were also examined. In addition, the aggregation feature of Congo red was studied by using UV-Vis spectroscopy techniques. The recovery of the ZnO catalyst was also investigated.


Photocatalytic degradation Aggregation Congo red Zinc oxide 

Copyright information

© Iranian Chemical Society 2009

Authors and Affiliations

  • M. Movahedi
    • 1
  • A. R. Mahjoub
    • 1
  • S. Janitabar-Darzi
    • 1
  1. 1.Department of chemistryTarbiat Modares UniversityTehranIran

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