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Surfactant-Assisted Low Temperature Synthesis of Shape-Controlled TiO2 Nanoparticles
|Jin Young Kim 1, Hyun Suk Jung , Sung-Hun Youn , Kug Sun Hong|
1. Seoul National University, Department of Materials Science and Engineering (MSE, SNU), San 56-1, Sillim-dong, Gwanak-gu, Seoul 151-744, Korea, South
Anatase phase TiO2 nanoparticles were synthesized by hydrolysis and peptization of the titanium tetraisopropoxied (TTIP) at a temperature as low as 80oC and the effects of surfactant (cetyltrimethylammonium bromide, CTAB) on the shape of particles were investigated. The addition of surfactant was found to enhance the 1-directional growth of precipitates during the peptization process and increase the aspect ratio of resulting particles. Selected area diffraction (SAED) pattern and high resolution transmission electron microscopy (HRTEM) image revealed that the nanorods are single crystalline in nature and preferentially grown along . X-ray diffraction confirmed that the synthesized powders were pure anatase phase regardless of the addition of surfactants. Bandgap and photocatalytic properties of nanorods were also characterized compared to those of spherical nanoparticles.
Presentation: poster at E-MRS Fall Meeting 2004, Symposium G, by Jin Young Kim
See On-line Journal of E-MRS Fall Meeting 2004
Submitted: 2004-05-20 06:17 Revised: 2009-06-08 12:55