Sunlight-induced Photocatalytic Degradation of Methylene Blue Dye by Magnesium and Silver-based Cadmium Sulfide Nanoparticles

摘要

The photodegradation activity of nanomaterials is generally studied and used for water purification purposes. The present investigation reports the synthesis of magnesium and silver-based cadmium sulfide nanoparticles (Mg2Ag2CdS4 NPs) with a size of similar to 25 nm for the degradation of methylene blue (MB) dye. The optical properties of the nanoparticles were studied, and the bandgap energy of the nanoparticles was found to be 2.16 eV. The photocatalytic degradation showed the highest photocatalytic activity (88 ) for 90 min. The effects of operating parameters such as the amount of catalyst, initial pH, and the initial dye concentration were studied. The rate constants for various doses were calculated and followed the pseudo-first order. A 75 degradation of MB dye was found even after five uses. The photocatalyst can significantly contribute to the removal of hazardous toxic chemicals from aqueous solutions from an environmental point of view.