Abstract: Fe₂O₃ coated on CNTs were prepared by adding CNTs in liquid-disposition process. The TEM images show that CNTs and Fe₂O₃ would be separated from each other without the PVA and be connected well when the PVA was absorbed on the surface of CNTs. The PVA could help CNTs weltering the aquatic phase and enhance the stability of their dispersion. The PVA had bifunctional bridges, with hydrophilic groups jointed with the Fe₂O₃ film, and hydrophobic chains adhered to the surface of the carbon nanotubes, so the Fe₂O₃ were supported on the surface of the carbon nanotubes through the surfactant. When the sample was calcined at 350 ℃, the PVA melted and coated on the external suface of CNTs to prevent the Fe₂O₃ from seperating from the CNTs′ external suface. The XRD patterns of the Fe₂O₃ film coated on CNTs reveal that the coating was α-Fe₂O₃ and γ-Fe₂O₃.

Key words: Poly(vinyl alcohol), Carbon nanotube, Ferric oxide, Coating