Synthesis and characteristics of NiO nanowire by a solution method

Abstract Nickel oxide (NiO) nanowire was synthesized by a simple aqueous solution method with urea as precipitant. The structure, morphology and properties of the products were examined by X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared absorption spectra (IR), and UV–visible absorption spectra. The results of the electrical and optical measurements made on these nanowire are discussed. The TEM images show the calcination product is NiO polycrystalline nanowire with diameters 5–15 nm. Thermal stability of this nanowire was studied by calcining the precursor at different temperatures and the breakdown of the precursor nanowire was observed after being calcined at 600 °C for 2 h.