Abstract
Anatase and rutile TiO 2 nanoparticles were synthesized via mechanochemical reaction and subsequent annealing of the products. TiO 2 nanoparticles were prepared by the use of planetary ball milling of titanyl sulphate (TiOSO 4. xH 2O. yH 2SO 4) and NaCl powders as the reactant and diluent phases, respectively. In this paper, the effect of volume fraction of diluent phase (NaCl) on the particle size distribution and agglomeration of TiO 2 nanoparticles is studied. Final products were obtained by annealing the milled powders at 700 °C for half an hour and subsequent washing out the water-soluble NaCl. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) investigations showed that the increase in NaCl:TiOSO 4 weight ratio (NTR) leads to the formation of nanocrystalline anatase and rutile particles with more uniform size distribution, lower weight ratio of rutile phase and lower agglomeration of particles.
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