GAS SENSING BEHAVIOR OF ZINC OXIDE NANORODS SYNTHESIZED VIA HYDROTHERMAL METHOD

Authors

  • Y.C. Ch'ng School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia Author
  • S.D. Hutagalung School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia Author

Keywords:

ZnO nanorods, hydrothermal, gas sensing, oxygen gas, room temperature

Abstract

Zinc oxide (ZnO) nanorods were grown on silicon substrate by simple hydrothermal method in an aqueous solution of mixed zinc nitrate hexahydrate (Zn(CH3COO)2.2H2O) and hexamethylenetetramine (C6H12N4, HMT). The nature of the substrate was found to have effect on the crystal structure and morphology of the grown ZnO nanorods. Pre deposited ZnO nanoparticles on the substrate were serving as seed layer to grow ZnO nanorods. The vertically aligned ZnO nanorods were obtained by well controlling the concentration of aqueous solution and substrate temperature. The sensing behavior of grown ZnO nanorods was measured at room temperature using oxygen gas. The resistance of device is greatly changed when exposure to the oxygen gas indicates that ZnO nanorods have a potential gas sensing behavior.

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Published

14-06-2026

Issue

Vol. 19 No. 2 (2011): Solid State Science and Technology

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.