Synthesis and characterization of Fe3+ doped TiO2 nanoparticles and films and their performance for photocurrent response under UV illumination

► In this study we examine the Iron as catalyst precursor to synthesize the Fe3+ doped TiO2 nanoparticles. ► The Fe3+ doped TiO2 catalysts show the presence of a mixed phase of anatase. ► The iron is completely absent in the XRD pattern of the doped iron TiO2 powder. ► The analysis of EPR result further confirms that Fe3+ ion are successfully doped in the TiO2 lattice by substituting Ti4+. ► Fe3+ doping can efficiently separate the photo-generated electrons and holes.