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Journal of Inorganic Materials, Volume. 36, Issue 9, 950(2021)

Preparation and Gas Sensing Properties of SnO2/NiO Composite Semiconductor Nanofibers

Yuxing CHU1... Hairui LIU1,2 and Shuang YAN1,* |Show fewer author(s)
Author Affiliations
  • 11. School of Textile and Materials Engineering, Dalian Polytechnic University, Dalian 116034, China
  • 22. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
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    References (49)
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    Figures & Tables(10)
    Preparation mechanism diagram of SnO2/NiO NFs
    1. Preparation mechanism diagram of SnO2/NiO NFs

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    SEM images of (a) CNFs@Ni(OH)2 and (b) NiO NFs
    2. SEM images of (a) CNFs@Ni(OH)2 and (b) NiO NFs

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    SEM images of (a, b) SnO2/NiO-1 NFs, (c, d) SnO2/NiO-2 NFs, (e, f) SnO2/NiO-3 NFs, and (g, h) SnO2/NiO-4 NFs
    3. SEM images of (a, b) SnO2/NiO-1 NFs, (c, d) SnO2/NiO-2 NFs, (e, f) SnO2/NiO-3 NFs, and (g, h) SnO2/NiO-4 NFs

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    XRD patterns of SnO2/NiO-1 NFs, SnO2/NiO-2 NFs,SnO2/NiO-3 NFs, and SnO2/NiO-4 NFs
    4. XRD patterns of SnO2/NiO-1 NFs, SnO2/NiO-2 NFs,SnO2/NiO-3 NFs, and SnO2/NiO-4 NFs

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    (a) Sensitivity curves of NiO NFs, SnO2/NiO-1 NFs, SnO2/NiO-2 NFs, SnO2/NiO-3 NFs, and SnO2/NiO-4 NFs to ethanol gas at different temperatures, and (b) response recovery curve to 100×10-6 ethanol gas (volume fraction) at the optimal working temperature
    5. (a) Sensitivity curves of NiO NFs, SnO2/NiO-1 NFs, SnO2/NiO-2 NFs, SnO2/NiO-3 NFs, and SnO2/NiO-4 NFs to ethanol gas at different temperatures, and (b) response recovery curve to 100×10-6 ethanol gas (volume fraction) at the optimal working temperature

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    Selectivity of SnO2/NiO-1 NFs, SnO2/NiO-2 NFs, SnO2/NiO-3 NFs, and SnO2/NiO-4 NFs to various target gases(100 mg/L)
    6. Selectivity of SnO2/NiO-1 NFs, SnO2/NiO-2 NFs, SnO2/NiO-3 NFs, and SnO2/NiO-4 NFs to various target gases(100 mg/L)

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    (a) Sensitivity curves of SnO2/NiO-3 NFs and MQ-3 to 100×10-6 ethanol gas at different working temperatures, and (b) response recovery curve to 100×10-6 ethanol gas at the optimal working temperature
    7. (a) Sensitivity curves of SnO2/NiO-3 NFs and MQ-3 to 100×10-6 ethanol gas at different working temperatures, and (b) response recovery curve to 100×10-6 ethanol gas at the optimal working temperature

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    • Table 1. Relative molar percentages of Ni and Sn in NiO NFs and SnO2/NiO NFs samples

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      Table 1. Relative molar percentages of Ni and Sn in NiO NFs and SnO2/NiO NFs samples

      SampleNi/%Sn/%
      NiO NFs1000
      SnO2/NiO-1 NFs 76.7923.21
      SnO2/NiO-2 NFs 25.4674.54
      SnO2/NiO-3 NFs 0.5199.49
      SnO2/NiO-4 NFs 0.0899.92

    • Table 2. Respective grain size (D) and grainboundary density (δ) of SnO2/NiO NFs samples

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      Table 2. Respective grain size (D) and grainboundary density (δ) of SnO2/NiO NFs samples

      SampleGrain size, D/nm Grain boundary density, $\delta $/(×109, mm-2)
      SnO2/NiO-1 NFs 11.18.12
      SnO2/NiO-2 NFs 7.418.46
      SnO2/NiO-3 NFs 6.325.16
      SnO2/NiO-4 NFs 6.325.16

    • Table 3. Comparison of the characteristics of some SnO2-based ethanol sensors reported in the literature with this work

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      Table 3. Comparison of the characteristics of some SnO2-based ethanol sensors reported in the literature with this work

      MaterialsTemperature/ ℃ Response/(100 mg·L-1) Ref.
      Hierarchical SnO230024.1[40]
      ZnO-SnO2 nanofibers 30018.0[41]
      Horseshoe-shaped SnO222517.3[42]
      NiO-decorated SnO2nanorods 30030.0[43]
      SnO2/NiO composite nanofibers 16013.0This work
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    Yuxing CHU, Hairui LIU, Shuang YAN. Preparation and Gas Sensing Properties of SnO2/NiO Composite Semiconductor Nanofibers [J]. Journal of Inorganic Materials, 2021, 36(9): 950

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    Paper Information

    Category: RESEARCH ARTICLE

    Received: Nov. 26, 2020

    Accepted: --

    Published Online: Dec. 9, 2021

    The Author Email: YAN Shuang (yanye150@outlook.com)

    DOI:10.15541/jim20200675

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology