Enhanced Visible Light Photocatalytic Performance of Fe3O4/g-C3N4 Composites Assisted by Hydrogen Peroxide

Quan-Liang Chen, Yi-Ling Liu

Different loading rates of composite photocatalysts Fe₃O₄/g-C₃N₄ were prepared by in situ precipitation method and were characterized by IR and XRD spectroscopies. Their photocatalytic performances were evaluated by the degradation of RhB under visible light irradiation. Fe₃O₄/g-C₃N₄ composites assisted by H₂O₂ shows higher photocatalytic performance than that of Fe₃O₄ or g-C₃N₄. As the dosage rate of Fe₃O₄ increases, the degradation rate is slightly increased. The Fe₃O₄/g-C₃N₄(0.1:1) composite has the best photocatalytic performance. It is inferred that the introduction of Fe₃O₄ is beneficial for the separation of photogenerated electrons and holes on the surface of the catalyst.