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

Abstract

<em>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</em><em> 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, </em><em>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 </em><em>and methyl orange as heavy-mass organic pollutants has been measured. While the saturation magnetization</em><em> 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.</em>