Preparation of Nano-CuO

Using Cu(NO_(3))_(2) ethanol solution and Cu(OH)_(2) sol as precursors respectively, the nanosized CuO products were prepared by a supercritical drying method. The particle size, morphology and structure of the products were characterized by XRD and TEM analyses. The results show that the diameter of the nanoparticles is within the range of 20~40 nm. The particle size of CuO powder prepared by adjusting the pH value of precursor sol using ammonia is smaller.