F-doped TiO2(F-TiO2) were successfully synthesized using a modified sol-gel method. The morphologies, structures, and photocatalytic performance in the degradation of methylene blue (MB) were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV-vis absorption spectroscopy, and electrochemical impedance spectra, respectively. The results show that F-TiO2 exhibitsan enhanced photocatalytic performance in the degradation of MB with a maximum degradation rate of 91% under visible light irradiation as compared with pure TiO2(32%). The excellent photocatalytic activity is due to the contribution from the increased visible light absorption, promoted separation of photo-generated electrons and holes as well as enhanced photocatalytic oxidizing species with the doping of Fin TiO2. (C) 2014 Elsevier B. V. All rights reserved.