J Mater Sci Technol ›› 2009, Vol. 25 ›› Issue (01): 53-57.

• Letters • Previous Articles     Next Articles

Fabrication and Wettability of ZnO Nanorod Array

Meng Sun1;2), Yi Du1), Weichang Hao1)†, Huaizhe Xu3), Youxing Yu1) and Tianmin Wang1)   

  1. 1) Centre of Materials Physics and Chemistry, Beihang University, Beijing 100083, China
    2) Department of Technology and Physics, Zhengzhou University of Light Industry, Zhengzhou 450002, China
    3) School of Science, Beihang University, Beijing 100083, China
  • Received:2008-02-27 Online:2009-01-28 Published:2009-10-10
  • Contact: Weichang Hao
  • Supported by:

    Spaceflight Basic Research Fund;and Innovation Foundation of Beihang University for PhD Graduates.

Abstract:

ZnO nanorod arrays were prepared in an open system by using a simple aqueous solution method. Spindle- like, wimble-like, tower-like and hexagonal rod-like ZnO rods were obtained under different conditions. ZnO nanorod arrays with different morphology and size were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and contact angle measurement (CAM). The size of ordered zinc oxide rods can be controlled by temperature of water bath, because this temperature can influences growing speeds in different crystal directions. Some additives, such as urea and thiourea, were introduced into reaction solution to improve quality of arrays. Surface character of ZnO nanorod arrays can be changed from hydrophilic to hydrophobic, which was proved to be dependence on size of air grooves on surface.

Key words: ZnO, Nanorod array, Wettability, Hydrophilic, Hydrophobic