Preparation and Characterization of NiO Nanoparticles by Chemical Precipitation Method

Abstract

NiO nanoparticles have been successfully prepared by dissolution-reprecipitation of micro-sized NiO powder from aqueous ammonium hydrogencarbonate solution in the presence of urea followed by calcination at 400°C for 1 h. The products were characterized by simultaneous thermal analysis (TG-DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourrier transform infrared spectroscopy (FT-IR). The results show that the as-prepared NiO samples have cubic crystallite structure with the average particle size ranging from 19 nm to 40 nm calculated by the Scherrer formula. The developed method has potential for application in industry due to simplicity and inexpensive materials.

Keywords:

• nanoparticle
• NiO
• precipitation
• urea

The authors would like to thank the Payame Noor University for its financial support.