Synthesis and characterization of Nickel hydroxide/ oxide nanoparticles by the complexation-precipitation method

摘要

In the present research work, the synthesis of Ni (OH)2and NiO nanoparticles with narrow size distribution and uniform shape, by complexation-precipitation method using ammonia as complexing agent, was investigated. The reactions were carried out at the temperature about 70°C in the solution and the precipitated nickel hydroxide precursor, in the form of the nanosized soft agglomerates, was calcined at 300 and 400°C. The hydroxide and the oxide samples were then characterized by XRD, SEM, and IR spectroscopy. The NiO particles obtained after calcination at 300°C, could preserve the size and shape of the precursor material, whereas, the one obtained after calcination at 400°C showed a slight change in the size and morphology of the particles. In general, the results indicate that using this method, Ni(OH)2and NiO nanoparticles, with homogeneity in size and shape, suitable for various applications, can be prepared.