A new method for the preparation of TiO 2 dual-modified by transition metal doping and carbon nanotube (CNT) grafting was proposed. Fe-NiO/TiO 2 was prepared by sol-gel method. Then CNTs were grafted on Fe-NiO/TiO 2 by fluidized bed chemical vapor deposition (FBCVD) method. The dual-modified CNT/Fe-Ni/TiO 2 composite photocatalyst has been characterized by X-ray diffraction (XRD), Raman spectra, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), UV-Vis absorption spectra and photoluminescence spectra. The photocatalytic activities of prepared samples were investigated by the photodegradation of methylene blue (MB). The results show that CNT grafted on TiO 2 had good graphite structure, and small part of TiO 2 was transformed from anatase to rutile during FBCVD process. Double modification of transition metals and CNT can effectively overcome intrinsic defects of TiO 2 in small specific surface area and low quantum efficiency. And the photocatalytic activity has been improved significantly.

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