Controllable Synthesis of Y2O3 Microstructures for Application in Cataluminescence Gas Sensing

Authors

  • Lichun Zhang,

    1. College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (China), Fax: (+86) 28-8541-2798
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  • Xiaoling Hou,

    1. College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (China), Fax: (+86) 28-8541-2798
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  • Dr. Ming Liu,

    1. Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064 (China)
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  • Prof. Yi Lv,

    Corresponding author
    1. College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (China), Fax: (+86) 28-8541-2798
    • College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (China), Fax: (+86) 28-8541-2798
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  • Prof. Xiandeng Hou 

    Corresponding author
    1. College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (China), Fax: (+86) 28-8541-2798
    2. Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064 (China)
    • College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (China), Fax: (+86) 28-8541-2798
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Abstract

Y2O3 dumbbells, microspheres, and nanosheets were synthesized by a facile hydrothermal procedure followed by calcination. Electron microscopy, X-ray diffraction, and N2 adsorption measurements were used to characterize the yttrium oxide microstructures. On the basis of a time-dependent study of nanostructure evolution and the effect of other processing parameters, a kinetic “homogeneous nucleation–self assembly–anisotropic growth” mechanism is proposed to explain the growth of these microstructures under hydrothermal conditions. The sensitivity of as-prepared Y2O3 structures to a series of gaseous chemicals was examined by using a homemade cataluminescence sensing system. The designed cataluminescence sensor based on the yttrium oxide dumbbells shows good sensing performance for 16 common volatile organic compounds.

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