Journal of Porous Materials

, Volume 17, Issue 3, pp 367–375

Degradation of basic blue 9 dye by CoS/nanoAlMCM-41 catalyst under visible light irradiation


DOI: 10.1007/s10934-009-9301-8

Cite this article as:
Pourahmad, A., Sohrabnezhad, S. & Radaee, E. J Porous Mater (2010) 17: 367. doi:10.1007/s10934-009-9301-8


The photocatalytic degradation of basic blue 9 was investigated in aqueous solution containing CoS/nanoAlMCM-41 photocatalyst under visible light. The catalyst is characterized by X-ray diffraction (XRD), UV–Vis diffused reflectance spectra (UV–Vis DRS) and scanning electron microscopy (SEM) techniques. The effect of CoS, nanoAlMCM-41 support and different weight percentage of CoS over the support on the photocatalytic degradation and influence of parameters such as CoS loading, catalyst a mount, pH and initial concentration of basic blue 9 on degradation are evaluated. CoS/nanoAlMCM-41 composite (17 wt%) is found to be optimum. The degradation reaction follows pseudo-first order kinetics. The effect of dosage of photocatalyst was studied in the range 0.04–1.2 g/L. It was seen that 0.8 g/L of photocatalyst is an optimum value for the dosage of photocatalyst. The degradation efficiency was decreased in dye concentration above 3.2 ppm for basic blue 9 dye. In the best conditions, the degradation efficiency was obtained 0.32 ppm for basic blue 9 dye.


Photodegradation Basic blue 9 NanoAlMCM-41 Photocatalyst X-ray diffraction Diffuse reflectance spectroscopy 

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of ScienceIslamic Azad UniversityRashtIran
  2. 2.Department of Chemistry, Faculty of ScienceUniversity of Mohaghegh ArdabiliArdabilIran

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