Abstract
ZnO nanosheet and nanorod arrays were selectively synthesized on zinc substrate through the reaction of zinc foil with dilute alkaline solution at 120–180°C for 12–24 h. The microscopic morphology and crystal phase of these products were characterized by scanning electron microscopy (SEM), and X-ray powder diffraction (XRD). The growth mechanism and morphology evolution of the nanostructured ZnO arrays were investigated. Due to their uniform morphologies and large surface areas, the as-prepared ZnO nanosheet and nanorod arrays may be used as photovoltaic films and gas sensors for future applications.
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