Photocatalytic Degradation of Rhodamine 6G by Sm Doped-CdS Nanoparticles Under Visible Light

Document Type : Original Article

Authors

1 Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran

2 Department of Chemistry, Ahar Unit, Islamic Azad University, Ahar, Iran

Abstract

In this research, samarium doped cadmium sulfide (Sm-CdS) nanoparticles were prepared through an ultrasound-assisted co-precipitation method. The synthesized sample was characterized by XRD, UV-Vis, ICP-OES and TEM techniques. The photocatalytic performance of the Sm-CdS was evaluated through the degradation of Rhodamine 6G (Rh-6G) under visible light irradiation. The effect of operational parameters on the degradation efficiency was modeled and optimized using response surface methodology (RSM). Under the optimal conditions ([Dye]0= 4 mg/l, [Catalyst]0= 0.6 g/l, pH= 8 and t= 70 min), more than 85% of the dye molecules were degraded. The results of the reusability of the photocatalyst showed that a negligible change in the photocatalytic activity was occurred after four reuses. Byproducts resulting from the photocatalytic degradation of Rh-6G were identified using the GC-MS technique. 

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Main Subjects

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Journal of Color Science and Technology
Volume 13, Issue 3
December 2019
Pages 201-210

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