Synthesis of CuO nanometer powder by one step solid state reaction at room temperature

Copper oxide nanometer powder wau synthesized by one step solid state reaction of CuCl₂ · 2H₂O with NaOH at room temperature. The solid product CuO was characterized by X-ray diffraction and a transmission electron microscope. It has been found that the particles of prepared copper oxide are spherical with average diameter of 20 nm. This new method has the advantages of convenience and high yield compared with literature methods.