Influence of Fe catalytic doping on the properties of TiO_2 nanoparticles synthesized by microwave method

摘要

The present work focus on the development of an effective process for undoped and Fe doped TiO_2 powders production by microwave technique. The influence of Fe doping on the structure, phase, vibrational bands and optical properties of TiO_2 were discussed. The X-ray diffraction patterns of nanoparticles revealed a preferentially oriented (101) anatase phase for TiO_2 and transforms to rutile TiO_2 with Fe doping. Fourier transform infrared spectra analysis confirmed the phase transformation from anatase to rutile TiO_2 with Fe doping. The UV-visible spectra showed the increase in absorption band with Fe doping when compared with undoped TiO_2 nano particles, and optical band gap decreased slightly with Fe doping. SEM micrographs revealed spherical shaped grains of TiO_2 with high homogeneity, with a subsequent reduction in the agglomeration of particles with Fe doping suggesting its potential application for better photo catalytic activity.