Ultrasound with low intensity assisted the synthesis of nanocrystalline TiO2 without calcination

作者：Ghows Narjes; Entezari Mohamad H^*

来源：Ultrasonics Sonochemistry, 2010, 17(5): 878-883.

DOI：10.1016/j.ultsonch.2010.03.010

• Ultrasound
• Low intensity
• Titanium tetra-isopropoxide
• Hydrolysis
• TiO2 nanoparticle
• Anatase

A novel method has been developed for the preparation of nano-sized TiO2 with anatase phase. Nanoparticles with diameter about 6 nm were prepared at a relatively low temperature (75 degrees C) and short time. The synthesis was carried out by the hydrolysis of titanium tetra-isopropoxide (TTIP) in the presence of water, ethanol, and dispersant under ultrasonic irradiation (500 kHz) at low intensity. The results show that variables such as water/ethanol ratio, irradiation time, and temperature have a great influence on the particle size and crystalline phases of TiO2 nanoparticles. Characterization of the product was carried out by different techniques such as powder X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) and UV-vis spectroscopy.

• 出版日期2010-6