Controllable preparation of loading and filling multi-walled carbon nanotubes with Fe₂O₃ nanoparticle

To control the loading and filling process, deposition method and wet chemical method were used to prepare Fe₂O₃-loading multi-walled carbon nanotubes (Fe₂O₃/MWCNTs) and Fe₂O₃-containing MWCNTs (Fe₂O₃@MWCNTs) with different content of Fe₂O₃, respectively. The Fe₂O₃/MWCNTs and Fe₂O₃@MWCNTs were characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and thermogravimetry analysis (TG). Results show that the Fe₂O₃ contents in the Fe₂O₃/MWCNTs and Fe₂O₃@MWCNTs systems are related to the mass proportion of C to Fe. When the mass proportion for C to Fe is 4:1 or 8:1, the Fe₂O₃/MWCNTs with Fe₂O₃ content will be 28.52wt.% or 16.17wt.%, and the Fe₂O₃@MWCNTs with Fe₂O₃ content will be 11.32wt.% or 9.43wt.%, respectively.