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Solar Light Aided Photobleaching of Congo red Dye Using Spions: a Novel Route for Complete Dye Degradation

In this study super paramagnetic iron oxide nano particles (SPIONs), ZnO and Ce-TiO2 were synthesized. The synthesized catalysts were characterized using X-ray diffraction, Fourier transform infra-red spectroscopy, diffuse reflectance UV-Visible spectroscopy, scanning electron microscopy and transmission electron microscopy. The photocatalytic efficiency of all the synthesized catalysts was investigated for the degradation of Congo red dye under solar light. Among the catalysts tested, SPIONs was found to be most active for the complete degradation of the dye. Other parameters influencing the dye degradation like effect of Na2CO3, hydrogen peroxide, pH and recyclability of the catalyst were also studied for the optimum degradation and the results have been discussed