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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2006. V. 9, N 2. P. 065-068.
Synthesis of TiO2 nanoparticles by hydrolysis and peptization
of titanium isopropoxide solution
1Department of Material Science & Eng., Sharif Industrial University, 11365-9466, Tehran, Iran
Abstract. Titanium dioxide nanoparticles have been prepared by hydrolysis of titanium
isopropoxide. An aqueous solution with varied pH and peptizing the resultant suspension
was used to prepare TiO 2 nanopowder with a narrow size distribution. The synthesized
powder was examined by X-ray diffraction, scanning electron microscope and
transmission electron microscope. The as-prepared powder entirely consisted of anatase
crystalline phase with a particle size of 7.6 nm. Only powder obtained from the solution
of pH = 2 had a fine particle size with spherical morphology. The anatase to rutile
transformation occurred at the temperatures lower than 600 °C.
Keywords: hydrolysis, peptization, titanium isopropoxide, crystallinity, TiO 2 .
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