Treatment of water and effluents from methylene blue dye by using high-performance Fe₃O₄/rGO/ZnSe/TiO₂ magnetic nanocomposite

The pollution of effluents and wastewater from industries with methylene blue (MB) dye is one of the great concerns at present. Methylene blue is very hazardous and toxic for humans and the environment. In this research, Fe₃O₄/rGO/ZnSe/TiO₂ magnetic nano-compounds were prepared by a hydrothermal approach for the photodegradation of methylene blue. The results showed that Fe₃O₄/rGO/ZnSe/TiO₂ magnetic nanocatalyst had perfect photocatalyst activity and after 40 min of UV irradiation, methylene blue dye was degraded, completely. The structural and morphology properties of Fe₃O₄/rGO/ZnSe/TiO₂ nanocomposites were studied by Raman, EDS, FT-IR, VSM, XRD, FESEM, and TEM analysis. The FT-IR, XRD, and EDS analysis confirmed the successful fabrication of Fe₃O₄/rGO/ZnSe/TiO₂ nanocomposites. The VSM analysis showed that the prepared nanocatalyst had excellent superparamagnetic behavior. The Raman analysis showed a reduction of graphene oxide nanostructure during the synthesis process. Based on the experimental results, Fe₃O₄/rGO/ZnSe/TiO₂ magnetic nanocomposites have good potential to be used as high-performance nanocomposites for the treatment of effluents and wastewaters from methylene blue.