Study of the Structural Properties of Lead-Doped Tio2: Pb and Iron- Doped Tio2:Fe Titanium Dioxide Powders - Abstract
In this research, a group of samples were prepared from pure titanium oxide compound doped with lead in different ratios according to (x = 0.2 - 0.5 - 0.7 - 0.9 g) and other samples doped with iron at a rate of x = 10% by grinding with metal balls and for different rotational speeds. 250 rpm for the pure sample and (250, 300, 350, 400) rpm for the ratio x = 10% and for a mixing period of up to 5hr, it was found that the iron-doped compounds crystallize according to the quaternary structure at the aforementioned preparation conditions. The XRD diagrams show the change of the structural properties of the different TiO2 samples with impurities and the method of preparation due to the effect of positive ions (Fe3+) and (Pb4+), where we notice that the crystal size decreases when iron ions are introduced into the structure of titanium oxide and It increases when the lead ions are subtracted, then it increases again with the increase in the rotational speed and decreases when the ratio of lead doping is 0.7 g. The results of the XRD showed the participation or non-participation of the samples of anatase and rutile of the tetragonal crystal system and brookite of the orthorhombic crystal system based on the titanium dioxide compound with different crystalline levels, and the preferred direction was (211) in all lead-doped and un-doped samples. For iron-doped and undoped samples for different spin velocities, it had a preferred orientation (101), and the relative strength, distance between crystal planes (d), crystal size (D) and lattice parameters (a), (b) and (c) phase cell volume (V).