ZnO Nanorod Arrays and Hollow Spheres through a Facile Room-Temperature Solution Route and Their Enhanced Ethanol Gas-Sensing Properties

Authors

  • Dr. Di Bao,

    1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)
    Search for more papers by this author
  • Prof. Peng Gao,

    Corresponding author
    1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)
    • Peng Gao, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)

      Yujin Chen, College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)

      Guobao Li, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871 (P. R. China)

      Wei Qin, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001 (P. R. China)

    Search for more papers by this author
  • Longqiang Wang,

    1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)
    Search for more papers by this author
  • Ying Wang,

    1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)
    Search for more papers by this author
  • Prof. Yujin Chen,

    Corresponding author
    1. College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)
    • Peng Gao, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)

      Yujin Chen, College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)

      Guobao Li, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871 (P. R. China)

      Wei Qin, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001 (P. R. China)

    Search for more papers by this author
  • Guorui Chen,

    1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)
    Search for more papers by this author
  • Prof. Guobao Li,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871 (P. R. China)
    • Peng Gao, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)

      Yujin Chen, College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)

      Guobao Li, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871 (P. R. China)

      Wei Qin, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001 (P. R. China)

    Search for more papers by this author
  • Cheng Chang,

    1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)
    Search for more papers by this author
  • Prof. Wei Qin

    Corresponding author
    1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001 (P. R. China)
    • Peng Gao, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)

      Yujin Chen, College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001 (P. R. China)

      Guobao Li, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871 (P. R. China)

      Wei Qin, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001 (P. R. China)

    Search for more papers by this author

Abstract

A new two-phase solution strategy has been developed for the synthesis of multifarious zinc oxide one-dimensional (1D) nanostructures, in which nanorod arrays (NAs), nanorod hollow spheres (NHSs), nanoribbons, nanowires, nanotubes, and nanonetworks were easily obtained at room temperature without using any catalysts, templates, or precursors. More importantly, an interesting formation mechanism of the 1D nanostructures in the benzene/water system and its distinctive size- and morphology-controlling ability were also discovered. Through a series of directed comparison experiments, it was found that the zinc source, reactant concentration, substrate, and reaction time played significant roles in this dipolar binary liquid technique. In addition, and considering their importance to semiconductor ZnO gas-sensing properties, the energy state and surface status of the as-obtained NA and NHS products were investigated through photoluminescence and surface wetting measurements. It was found that a large concentration of oxygen vacancies and high surface energy were present on the surface of the NAs and NHSs, which resulted in their enhanced ethanol gas-sensing properties at a relatively low temperature.

Ancillary