ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Preparation of nanocrystalline anatase TiO2 using basic sol-gel method
Xiong Bi-Tao, Zhou Bao-Xue, Li Long-Hai, Cai Jun, Liu Yan-Biao, and Cai Wei-Min
School of Environmental Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China
Received: 3 April 2007 Revised: 15 September 2007 Accepted: 7 December 2007
Abstract: Nanocrystalline titanium dioxide particles with anatase structure and high thermal stability have been synthesized using the
basic sol-gel method. The particle size and morphology were refined under hydrothermal conditions in the presence of different
concentrations of tetramethylammonium hydroxide (TMAH) at 210°C and 230°C. XRD and TEM analysis showed that the TiO2 particles obtained were homogeneous and monodispersive at low contents of TMAH. All intense peaks, clearly observed in the
XRD patterns, were assigned to the anatase phase and no rutile phase was observed. At high contents of TMAH, nanoscale small
(10–30 nm) and larger (>100 nm) TiO2 particles were one-pot synthesized. The nanocrystalline TiO2 particles synthesized by this method have good thermal stability. With the sintering temperature of up to 650°C, all the
XRD peaks maintained good agreement with the anatase reference data.
Keywords: sol-gel preparation - nanocrystalline titania - tetramethylammonium hydroxide
Full paper is available at www.springerlink.com.
Chemical Papers 62 (4) 382–387 (2008)