Photodegradation of Methyl Orange Dye Using Mg Modified ZnS in Presence of Visible Light

This paper explores the photocatalytic degradation of methyl orange (MO) dye using Mg doped ZnS nanoparticles, synthesized through a microwave assisted solvothermal method using zinc acetate, magnesium chloride, and thioacetamide. The x-ray diffraction (XRD) analysis confirmed the crystalline structure of the synthesized nanoparticles, indicating their suitability for photocatalytic applications. The optical absorption spectra revealed characteristic peaks in the UV-visible range, correlating with the nanoparticle’s effective light absorption capabilities. Furthermore, the energy bandgap, determined through Tauc plots, highlighted the material's potential for visible light induced photocatalysis, making it an efficient catalyst for dye degradation. Furthermore, the experiment involved preparing an aqueous MO solution, mixing it with Mg doped ZnS nanoparticles, and exposing it to visible light. The changes in the dye were observed using UV-Visible spectroscopy. This method showed that the nanoparticles effectively helped in degrading the dye up to 78.5%. The results indicate that Mg doped ZnS nanoparticles are effective for wastewater treatment, as they can effectively break down harmful dyes and can reduce environmental hazards, providing a sustainable and efficient method to treat industrial wastewater and ensure that released water is safer for the environment.