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The magnetically recyclable MnFe2O4/Polyaniline (PANI) composite was successfully synthesized by a combination of a saltassisted solution combustion method and an in situ oxidative polymerization method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV­vis diffuse reflectance spectroscopy (DRS) were employed to characterize the physical and chemical properties of the samples. The results showed that MnFe2O4/PANI composite exhibited higher photocatalytic activity and stability than pure PANI and MnFe2O4 nanoparticles toward the degradation of rhodamine B (RhB) under visible light irradiation, suggesting the existence of a synergic effect between PANI and MnFe2O4. The excited state electrons in the lowest unoccupied molecular orbital (LUMO) of PANI can readily migrate into conduction band (CB) of MnFe2O4, while the holes in the valence band (VB) of MnFe2O4 migrate to the 3-orbital of PANI because of the enjoined electric fields of the two materials, which can further improve the separation of the photoinduced electron­hole pairs.

journal of the ceramic society of japan

Magnetically recyclable MnFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;/polyaniline composite with enhanced visible light photocatalytic activity for rhodamine B degradation