Titanium dioxide nanoparticles have been prepared by hydrolysis of titanium isopropoxide. An aqueous solution with varied pH and peptizing the resultant suspension has been applied for preparation of the TiO2 nanopowder with narrow size distribution. Synthesized powder is characterized by X-ray diffraction, scanning electron microscope (SEM) and transmission electron microscope (TEM). The as-prepared powder was entirely consisted of anatase crystalline phase with particle size of 7,6 nm. Only powder acquired from a solution of pH = 2 has a fine particle size with spherical morphology. The anatase to rutile transformation occurred at temperatures lower than 600 <$E symbol Р>C.

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