Abstract:Nanometer titanium dioxide particles have been prepared by the sol-gel method,in which butyl titanate
as precursor,ethylene glycol as a chelating agent. And the glycol of titanium salt concentration,pH value,temperature
on the influence of the particle size titanium dioxide were studied. Moreover,the structure and morphology of nanometer
titanium dioxide particles were characterized by infrared spectroscopy and SEM. The experimental results show
that uniform size distribution of nanoparticles titanium dioxide can be prepared by sol-gel method. Using ammonium nitrate
could effectively prevent the titanium dioxide nanoparticles reunion. When pH value is 2 to 3, the temperature is
20℃ to 40℃,the concentration of titanium salt of ethylene glycol in the acetone is 0. 03 M,the diameter of titanium
dioxide nanoparticle is 150 nm;the concentration of titanium salt of ethylene glycol in the acetone is 0. 05 M,the particle
size is 240 nm;and when the concentration of titanium salt of ethylene glycol in the acetone is 0. 07 M,the diameter
of titanium dioxide nanoparticles can reach to 600 nm.
