مشخصات پژوهش

HoxCd1-xS (0 B x B 0.12) nanoparticles with different Holmium contents were successfully synthesized via hydrothermal method. The prepared samples were characterized by X-ray diffraction, scanning electron microscopy, Energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and UV–Vis diffuse reflectance spectroscopy techniques. Photocatalytic efficiency of pure and HoxCd1-xS samples was evaluated by monitoring the decolorization of RRed 43 in aqueous solution under visible light irradiation. 8 % Ho-doped CdS nanoparticles indicated the highest decolorization among the different amounts of dopant agent used. The effect of operational parameters including doping level, catalyst dosage, initial dye concentration and radical scavengers on the photocatalytic activity were evaluated. The Langmuir–Hinshelwood (L–H) model was evaluated for the photocatalytic process.