Reaction in Solution and Competitive Balance of Nano-NiO by Ammonia Precipitation

Abstract

Nano-NiO particles have been synthesized at room temperature via single-phase precipitation, using NiCl 2 -6H 2 O and NH 3 -H 2 O as the raw materials and H 2 O as solvent. It has been indicated by X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis as well as transmission electron microscopy (TEM) analysis that nano-NiO particles have cubic crystal structure with about 9 nm of average diameter and 99.73% of purity. Compared with conventional methods, the developed method is simple and inexpensive so that it has potential for further scale-up application in industry. The key factor is how to control the chemical reaction in solution and competitive balance. This paper has discussed these aspects.

The Synthesis Methods of Nickel Oxide Nanostructures - A Brief Review

“…Particle size can be easily controlled by changing the parameters like concentration of reagent, pH of the solution using this method. This method is based on precipitating the nickel salts with different precipitating agents such as NaOH, NH3, (NH4)2CO3, NH4HCO3, urea, LiOH and ethanolamine [21][22][23][24][25][26][27]. The stabilizing agent was not used in most experiments.…”

“…The stabilizing agent was not used in most experiments. Xiang Yi Deng [26] synthesized NiO nanoparticles with an average size of 9 nm using NiCl2•6H2O and NH3•H2O as the raw materials and H2O as a solvent. It was determined reaction conditions for synthesis in this research work.…”