Structural, Optical and Magnetic Feature of Core-Shell Nanostructured Fe3O4@GO in Photocatalytic Activity

In this paper, structural, magnetic, optical, and photocatalytic properties of core-shell structure Fe3O4@GO nanoparticles have been compared with Fe3O4 nanoparticles in the degradation of methyl blue and methyl orange. For this purpose, GO nanosheets were wrapped around the APTMS-Fe3O4 nanoparticles and then characterized using X-ray Diffraction, field emission scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometer, UV-visible, and Fourier transform infrared spectroscopy. The results show the core-shell nanostructured Fe3O4@GO is formed. As an application for the synthesized structure, degradation of methyl blue and methyl orange as heavy-mass organic pollutants has been measured. While the saturation magnetization of Fe3O4@GO is lower than Fe3O4, but shows better efficiency in the degradation of methyl blue and methyl orange. The obtained catalysts can be quickly separated from the solution under an external magnetic field because of their considerable Ms values, which will be beneficial for their reuse and boosting the overall water treatment efficiency in practical applications.