Structure and Band Gap Energies of Nano Titanium Dioxide Doped With the Fifth Group Elements

Abstract

Titanium dioxide powders were synthesized by adding different fifth group elements precursors to titanium (IV) isopropoxide followed by calcination at 500-600 ?C. Diffractograms showed the presence of anatase phase accept for phosphorus which has amorphous- poly crystalline phase then established a rutile phase among heating above 500?C. Particle size distribution and AFM images indicate the nano dimensions of the studied powders. Particle size distribution varied appreciably in comparison with crystallite size (L) calculated from Scherer formula. Band gap energies calculated from Uv-Vis spectra of thin films deposited on one side of quarts substrate. The band gap energies of  14TiO2">  –Fifth group elements of this work ranged from 2.83 eV for 14N-TiO2">  to2.83 eV for Bi 14-TiO2">  with a steady increase according to atomic radii accepts for antimony which deviated from that behavior

Keywords:  14TiO2">  , Doping, fifth group, Dffractograms, AFM, Band gap