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A ZnO Gas Sensor with an Abnormal Response to Hydrogen

Author

Listed:
  • Hao Sun

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Yachi Yao

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Ruixuan Yang

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Zhaonan Yan

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Chen Cao

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Yanwen Deng

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Shengjiang Wu

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Shuhai Liu

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Qi Xu

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

  • Yong Qin

    (Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China)

Abstract

ZnO is a commonly used material for hydrogen gas sensors. In this study, a ZnO nanofiber film with a diameter of approximately 60 nm was synthesized by the electrospinning method. Compared to previously reported ZnO hydrogen gas sensors, an abnormal phenomenon was observed here, where the resistance of the ZnO nanofiber film increased upon exposure to hydrogen gas in the temperature range from 210 °C to 330 °C. The physical mechanism of this phenomenon was explored through microstructure analysis and DFT simulation calculations that showed a total charge transfer of 0.65 e for the hydrogen molecule. This study can push forward the understanding of ZnO hydrogen sensing.

Suggested Citation

  • Hao Sun & Yachi Yao & Ruixuan Yang & Zhaonan Yan & Chen Cao & Yanwen Deng & Shengjiang Wu & Shuhai Liu & Qi Xu & Yong Qin, 2023. "A ZnO Gas Sensor with an Abnormal Response to Hydrogen," Energies, MDPI, vol. 16(15), pages 1-11, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5847-:d:1212269
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    References listed on IDEAS

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    1. Bartłomiej Ziętek & Aleksandra Banasiewicz & Radosław Zimroz & Jarosław Szrek & Sebastian Gola, 2020. "A Portable Environmental Data-Monitoring System for Air Hazard Evaluation in Deep Underground Mines," Energies, MDPI, vol. 13(23), pages 1-18, November.
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