Mostafa Khademi Shamami - Department of Chemistry, East Tehran Branch, Islamic Azad University. Tehran, Iran.
Morteza Enhesari - Department of Chemistry , Narag Branch , Islamic Azad University. Tehran, Iran.
Shokufeh Aghabeygi - Department of Chemistry, East Tehran Branch, Islamic Azad University. Tehran, Iran.

nano-ZrO(2) particles were prepared by sol-gel method under ultrasonic irradiation . During this study, zirconium dioxide was prepared in ethanol using zirconium(IV) chloride as precursors.. Nano-size zirconia was obtained by thermal decomposition of alcohol mediated of zirconium(IV) hydroxide at 800°C. The phase purity was confirmed by furrier transfer- Infrared spectroscopy (FT-IR) . particle size was determined from Scanning electron microscopy (SEM) was found to be 20–50 nm

ZrO(2); Sol-gel; Ultrasonic irradiation nanoparticle