Coating iron oxide (Fe₃O₄) on the surface of multi-walled carbon nanotubes by cooperation precipitation and Fe₃O₄-MWCTs' magnetic properties

Cooperation Precipitation was utilized to deposit Iron oxide (Fe₃O₄) on the surface of multi-walled carbon nanotubes (MWCNTs). In the experiment, field-emission scanning electron microscope (FESEM) and field-emission transmission electron microscope (FETEM) as well as energy dispersive spectroscopy (EDS) results were presented to show the morphology, components of Fe-MWCNTs. Meanwhile, X-ray diffraction (XRD) was used to analyze the structure of Iron coated on the surface of MWCNTs, vibrating sample magnetometer (VSM) and Vector network analyzer were used to characterize the magnetic property and the electromagnetic properties, respectively. To sum up, the surface of MWCNTs had been coated Fe₃O₄ by cooperation precipitation, and the magnetic property of the functioned-MWCNTs had a large increase compared with the original MWCNTs. The saturation magnetization was 12.15 emu/g.