In this paper, nano-composites of ZnO/Co(OH)(2) were synthesized via Hydrothermal processing. Co(NO3)(2)center dot 6H(2)O,Zn(NO3)center dot 4H(2)O (0.5 M, 200 ml) and KOH (2 M, 200 ml) were used as precursors. N_Cetyl_N, N, N,_tri methyl ammonium bromide (CTAB) was used as surfactant and its effects on the morphologie was investigated. The crystal growth mechanism was studied via Growth Unit Model and thermodynamics of cobalt oxide formation from its hydroxide under hydrothermal condition. Nano-rods and nano-hexagonals were prepared via hydrothermal synthesis with and without using CTAB, respectively. Also, the effects of hydrothermal periods on morphologies and particle growth were investigated in this paper. Xray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the products obtained.

Keywords: Nanostructures; Growth models; Hydrothermal crystal growth; ZnO/Co(OH)(2) nanocomposites; Nanocomposites