Sustainable Green Synthesis of Supported Fe

The synthetic color emissions from the rapidly expanding textile sector are becoming increasingly concerning. Because they are toxic, long-lasting, and difficult for the environment to break down, these dyes are a big hazard. In order to create environmentally friendly and magnetically recoverable nanoparticles for water-based dye removal, this research used a green synthesis method to create magnetic nanocomposites based on Fe3O4 that were coated with SiO2 and AgVOt. The nanocomposites were created in two distinct structural arrangements: supported and core-shell. Due to its emphasis on chemical reduction, the green synthesis pathway provided an improvement over conventional preparation methods in terms of safety. Because it improved structural stability and active site dispersion, inserting the SiO2 interlayer enhanced functional performance.Methylene blue was utilized to evaluate the photocatalytic effectiveness of the synthesized nanocomposites as a model synthetic dye pollutant. Good removal capability was demonstrated by both the core-shell and supported designs, although the supported FetO4/SiO2/AgVOt nanocomposite outperformed the others due to the easier accessibility of reactive sites. To find the optimal conditions, we evaluated the effects of critical operating factors like light intensity, starting dye concentration, pH of the solution, nanocomposite dosage, hydrogen peroxide concentration, and reaction temperature in depth. Results from reusability tests, which demonstrated no degradation in performance over five cycles, provided further evidence of the nanocomposite's recyclability and durability. The degradation process was further clarified by conducting scavenger tests, which helped identify the reactive species that were most frequent. These nanoparticles offer a lot of potential as effective and environmentally safe instruments for restoring degraded ecosystems and enhancing wastewater treatment.