Journal of Inorganic Materials

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Hydrothermal Synthesis of ZnO Nanorod Arrays and Their Morphology Control

LI Bi-Hui, TANG Yi-Wen, ZHANG Xin, JIANG Yun, LUO Li-Juan, JIA Zhi-Yong   

  1. College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China

  • Received:2006-06-28 Revised:2006-09-11 Online:2007-05-20 Published:2007-05-20
  • Contact: TANG Yi-Wen


By using the hydrothermal method, the ZnO nanorod arrays with different morphologies were synthesized on ZnO nanoparticle-coated transparent conductivity glasses (TCO) at low temperatures by controlling the pH value of precursory solutions. The ZnO nanorod arrays were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), high-resolution transmission electron microscope (HRTEM) and ultraviolet-visible spectrophotometer (UV-Vis). Furthermore, the mechanism was primary discussed. The results show that the ZnO nanorod is a single crystal and it grows along c axis. When the pH value is about 10.5, the array is well-aligned and the diameter of the nanorod is uniform. Optical characterization shows that the optical transmittance of the film is higher than 80% in the visible wavelength and its band gap is about 3.25eV.

Key words: hydrothermal, ZnO array, pH value, morphology

CLC Number: 

  • O642