Amin Behbahani - Fuel Cell Laboratory, Green Research Center, Iran University of Science and Technology, Narmak, Tehran, Iran.
Soosan Rowshanzamir - School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran ۱۶۸۴۶- ۱۳۱۱۴, Iran. Fuel Cell Laboratory, Green Research Center, Iran University of Science and Technology, Narmak, Tehran, Iran.
Ashkan Esmaeilifar - Fuel Cell Laboratory, Green Research Center, Iran University of Science and Technology, Narmak, Tehran, Iran.

Recently, it was observed that nanostructured zirconia, ZrO2, powder exhibits enhanced performance in many applications. We report hydrothermal method for the synthesis of nanocrystallineZrO2 powder, and its characterization by XRD and SEM techniques. Nano-size zirconiawas prepared by hydrothermal method using commercial zirconia powder. The SEM of product obtained after hydrothermally treatment showed different morphology than the commercial zirconia. XRD study showed that moreover monoclinic phase, cubic and tetragonal phase was formed after alkali treatment by hydrothermal method. The nano-size zirconia obtained has average particle size in the range of 20-40 nm.

nano-crystalline ZrO2, commercial zirconia, hydrothermal synthesis, alkali treatment