fabrication of manganese dioxide nanoparticles in starch and gelatin beds: investigation of photocatalytic activity

This study utilized potassium permanganate and natural polymers starch and gelatin as stabilizing agents to the green fabrication of manganese dioxide nanoparticles mno2-nps for photocatalytic degradation of methylene blue. mno2-nps were characterized using uv-vis spectroscopy, ft-ir, and x-ray diffraction spectroscopy, as well as field emission scanning electron microscopy (fesem). xrd confirmed the amorphous nature and purity of the nanoparticles. the photocatalytic activity of mno2-nps was examined by the degradation of methylene blue dye under neutral ph. results showed 95% dye degradation within 45 minutes under repeat cycling, indicating the excellent photocatalytic performance. the green synthesis method and effective photocatalytic activity demonstrate of starch and gelatin-stabilized mno2-nps as sustainable photocatalysts for degradation of organic pollutants. the produced potential in the two beds with starch and gelatin was examined.