Abstract
Moringa Oleifera (MO) extract is used for green-synthesis of magnetic nanoparticles Fe3O4/TiO2 for methylene blue (MB) dye degradation. Fe3O4 was characterized using an X-ray diffractometer (XRD) showing a cubic inverse spinel structure with an average crystallite size of 5.49 nm and an average crystallite size of Fe3O4/TiO2 nanocomposites of 5.37 nm. In the UV-Vis results, the Fe3O4/TiO2 nanocomposite has band gap of 3.48 eV. MB degradation increased by increasing mass of the Fe3O4/TiO2 nanocomposite. The irradiation time of 60 minutes with a mass of 0.06 grams had the highest degradation percentage reaching 98.4%. The Fe3O4/TiO2 nanocomposites can be reused up to two times without a significant decrease in the percentage of MB due to their magnetic properties.
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