Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (2): 333-337.doi: 10.1007/s40242-013-2181-0

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Characterization and Wettability of ZnO Film Prepared by Chemical Etching Method

GUO Hua-xi, JIA Hui-ying, ZENG Jian-bo, CONG Qian, REN Lu-quan   

  1. Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, P. R. China
  • Received:2012-05-07 Revised:2012-07-13 Online:2013-04-01 Published:2013-03-20
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.50875108) and the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20100061110022).

Abstract:

ZnO thin films were prepared by a chemical etching method and their wettability was investigated. The structure and surface composition structure were characterized by means of scanning electron microscopy, X-ray photoelectronic spectrometry(XPS), X-ray diffraction(XRD) and Raman spectrometry. These analyses reveal that the etched films were large-scale micro-nanohierarchical structures composed of a Zn core and a ZnO coating. Superhydrophobic surfaces with water contact angles of over 150o were obtained by n-octadecanethiol(ODT) modification. The XPS and Raman results indicate that ODT molecules were bound to the ZnO surface with the S head group by forming Zn-S bond.

Key words: ZnO, Chemical etching, Micro-nanostructure, Raman spectrometry, Wettability