A Novel Synthesis Process of ZnO Nano Powders in Granule Form

Abstract

ZnO nano powders, which have different morphologies and agglomerate structures, were continuously produced from Zn(NO₃)₂.6H₂O, NH₃ and NaOH by a novel synthesis process: modification and combination of precipitation method with spray dryer. The synthesized powders were characterized by different methods such as SEM, TEM, DTA-TG, XRD, BET and Nanosizer. They represent a spherical granule form with a considerably high specific surface area of 39-41 m².g^–1 and nano particle size 50-550 nm, 5-300 nm and 26-39 nm according to Nanosizer, TEM and BET, respectively.

Keywords:

• ZnO nano powders
• Atomization of precipitate
• Spray dryer