PREPARATION OF COBALT OXIDE/ZINC OXIDE NANOCOMPOSITE

Cobalt Oxide/Zinc Oxide nanocomposite was synthesized by dropwise addition of Co(NO)(3)center dot 6H(2)O and Zn(NO3)(2)center dot 4H(2)O solutions to KOH solution at different temperatures followed by calcination at 300 degrees C for 4 h. The morphology and structure of nanoparticles and the influence of temperature on particle size were studied using scanning electron microscopy (SEM) and X-Ray Diffraction (XRD). Minimum particle size was obtained before calcination at 70 degrees C. In addition, the spherical, semispherical and flake-shaped nanoparticles were observed at ambient temperature. On the other hand, Co(OH)(2) was transformed to Co3O4, ZnO flakes were eliminated, and particle size changed during calcination. Synthesized samples at 50 degrees C and 70 degrees C showed an increase size after calcinations; however, elimination of flakes during calcination caused particle size reduction for synthesized sample at ambient temperature.