Effect of SiO2 Addition and Calcination Temperature on Surface Area, Crystal Size, Particles Size and Phase Transformation of TiO2 Prepared by Sol-Gel Method

  • Dalyajasim Ahmed, Basim Ibrahim Al-Abdaly


In this research, TiO2, TiO2-SiO2 nanoparticles were prepared via sol-gel method using hydrolysis of Titaniumtetraisopropoxide (TTIP) with ethanol andwater mixture as titania source.TiO2-SiO2nanocomposites were successfully synthesizedby sol-gel method using titanium (IV)tetraisopropoxide, tetra-ethylorthosilicateas a precursors at calcination temperatures(400,500,600,and 700)o C. The synthesized TiO2 and TiO2-SiO2Nanocompositeswere then characterized by XRD, AFM, BET surface area,SEM, XRF.XRD analysis showed that the presence of silica (SiO2) in the TiO2 has an effect on crystallite size of the composed powders, and crystalphases; TiO2was anatase, without any rutile at different calcination temperatures. On the other hand,the addition of silica was an increasing the surface area of pure titanium and the beast surface area was 351.9 m2/gm. with particles size 44.98nm at 500oC comparison with pure nanotitanium , and the surface area for  prepared samples increases with increasing temperature.