Green Synthesis of Fe3O4 Magnetic Nanoparticle by Moringa oleifera Leaf Extract for Photocatalytic of Conge Red dye

Natural water resources can be contaminated if industrial waste is inadequately treated. The uncontrolled release of dangerous organic compounds poses a serious environmental risk. Before wastewater may be discharged into the environment, it must be processed properly. The green synthesis method, Moringa oleifera leaf extract, was used in this study to produce Fe3O4 (magnetite). The green synthesis method is an environmentally friendly, cost-effective, low-toxicity, and simple method. Following that, Fe3O4 was used to photodegrade Congo red dye. XRD, SEM-EDX, VSM, UV-Vis DRS, and FTIR were used to characterize Fe3O4 products. pH of the solution, dye concentration, and irradiation time are photodegradation variables. The resulting Fe3O4 is magnetic, with a saturation magnetization value of 80.25 emu/g and a band gap energy of 1.42 eV. At a solution pH of 3, Congo red concentration of 50 mg/L, and an irradiation time of 30 minutes, the photodegradation effectiveness was 98.55%. After five consecutive reuse cycles, Fe3O4 shows outstanding photostability. According to the findings of this study, Fe3O4 is particularly promising for processing dye-containing waste.