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

作者：Pourahmad A^*; Sohrabnezhad Sh; Radaee E

来源：Journal of Porous Materials, 2010, 17(3): 367-375.

DOI：10.1007/s10934-009-9301-8

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

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.

• 出版日期2010-6