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

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Abstract

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.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Islamic Azad University, Rasht Branch, Rasht, Iran

    A. Pourahmad

  2. Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran

    Sh. Sohrabnezhad & E. Radaee

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  1. A. Pourahmad
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  2. Sh. Sohrabnezhad
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  3. E. Radaee
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Correspondence to A. Pourahmad.

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Pourahmad, A., Sohrabnezhad, S. & Radaee, E. Degradation of basic blue 9 dye by CoS/nanoAlMCM-41 catalyst under visible light irradiation. J Porous Mater 17, 367–375 (2010). https://doi.org/10.1007/s10934-009-9301-8

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  • DOI: https://doi.org/10.1007/s10934-009-9301-8

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