Starch-Stabilized Iron Oxide Nanoparticles for the Photocatalytic Degradation of Methylene Blue

The photocatalytic Fenton process, which produces a strong oxidant in the form of hydroxyl radicals, is useful method to degrade organic contaminants water. reaction uses hydrogen peroxide and Fe2+ ions under relatively acidic conditions (typically pH 2–3) maintain solubility iron catalyst but troublesome due large volumes decontaminated yet highly water generated. Starch-stabilized (Fe2+/Fe3+) oxide nanoparticles were synthesized serve as colloidal system hydrophilic starch effectively prevents precipitation closer neutrality. To evaluate usefulness this for photo-Fenton degradation methylene blue model dye, preparation protocol used loading varied. was investigated at values up 4. Not only starch-stabilized catalysts able decolorize dye also mineralize it part, that is, carbon dioxide could be reused several cycles. This demonstrates an efficient stabilizer aqueous media, enabling their use environmentally friendly cost-effective catalysts. These may other dyes pollutants water, such pesticides.