Journal of Inorganic Materials, Volume. 35, Issue 4, 416(2020)

Chip Sensor for pH and Temperature Monitoring Based on ZnO Composite

Wei ZHANG1... Peng GAO2,*, Chengyi HOU1, Yaogang LI1, Qinghong ZHANG1 and Hongzhi WANG1,* |Show fewer author(s)
Author Affiliations
  • 1College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
  • 2China Electronics Technology Group Corporation Eighteenth Institute, Tianjin 300110, China
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    Figures & Tables(12)
    (a) Digital photograph and (b) schematic diagram of pH and temperature sensor
    Schematic diagram of apparatus prepared with ZnO nanorod arrays
    Reversible transform between reduced polyaniline and emeraldine
    FE-SEM images of (a, b) ZnO nanorod arrays on the surface of PET/ITO, (c, d) PAni nanosheet arrays on the surface of ZnO nanorods
    Digital photographs of (a) pure PET/ITO films, (b) PET/ITO films modified with ZnO nanorod arrays and (c) PET/ITO films modified with ZnO/PAni micro-nanostructures
    (a) Time dependence of the open circuit potential between work electrode and reference electrode in various solutions with different pH with in 100 s, and (b) variation of open circuit potential versus pH for work electrode
    FE-TEM images (a, b) of ZnO/rGO, and corresponding element mapping of (c) Zn and (d) C
    XRD pattern of ZnO/rGO
    (a) Variation and (b) percentage variation of resistance versus temperature for ZnO/rGO nanocomposites
    (a) Digital photo of the sensor chip in the test solution; (b) pH sensing and (c) temperature sensing performances of the sensor chip
    (a) Digital photo of PET/ITO modified with ZnO/ PAni micro-nanostructure, (b) SEM image of ZnO/PAni micro- nanostructure. and (c) Linear I-V curves of ZnO/rGO thermistor measured under 25 and 40 ℃
    • Table 1. Resistance-temperature performance of ZnO/rGO nanocomposites

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      Table 1. Resistance-temperature performance of ZnO/rGO nanocomposites

      SampleΔR·ΔT-1/(Ω∙℃-1)(Δ(ΔR·R0-1)·ΔT-1/(%·℃-1)
      1192.9-0.63
      2147.2-0.67
      3173.6-0.61
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    Wei ZHANG, Peng GAO, Chengyi HOU, Yaogang LI, Qinghong ZHANG, Hongzhi WANG. Chip Sensor for pH and Temperature Monitoring Based on ZnO Composite[J]. Journal of Inorganic Materials, 2020, 35(4): 416

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    Paper Information

    Category: RESEARCH PAPER

    Received: May. 13, 2019

    Accepted: --

    Published Online: Mar. 1, 2021

    The Author Email: GAO Peng (gplvff@sina.com), WANG Hongzhi (wanghz@dhu.edu.cn)

    DOI:10.15541/jim20190222

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