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ZnO-carbon nanofibers for stable, high response, and selective H2S sensors

机译：用于稳定，高响应和选择性H2S传感器的ZnO-碳纳米纤维

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摘要

Hydrogen sulfide (H2S), as a typical atmospheric pollutant, is neurotoxic and flammable even at a very low concentration. In this study, we design stable H2S sensors based on ZnO-carbon nanofibers. Nanofibers with 30.34 wt% carbon are prepared by a facial electrospinning route followed by an annealing treatment. The resulting H2S sensors show excellent selectivity and response compared to the pure ZnO nanofiber H2S sensors, particularly the response in the range of 102-50 ppm of H2S. Besides, they exhibited a nearly constant response of approximately 40-20 ppm of H2S over 60 days. The superior performance of these H2S sensors can be attributed to the protection of carbon, which ensures the high stability of ZnO, and oxygen vacancies that improve the response and selectivity of H 2 S. The good performance of ZnO-carbon H2S sensors suggests that composites with oxygen vacancies prepared by a facial electrospinning route may provide a new research strategy in the field of gas sensors, photocatalysts, and semiconductor devices.
机译：硫化氢（H2S）作为典型的大气污染物，即使在非常低的浓度下也是神经毒性和易燃。在本研究中，我们设计基于ZnO-碳纳米纤维的稳定H2S传感器。具有30.34wt％碳的纳米纤维通过面部静电纺丝术，然后进行退火处理。与纯ZnO纳米纤维H2S传感器相比，所得H2S传感器具有优异的选择性和反应，特别是在102-50ppm的H2S的响应范围内。此外，它们在60天内表现出约40-20ppm的几乎恒定的响应。这些H2S传感器的优异性能可归因于碳的保护，这确保了ZnO的高稳定性，以及改善H 2 S的响应和选择性的氧空位。ZnO-碳H2S传感器的良好性能表明复合材料通过面部静电纺丝路线制备的氧空位可以在气体传感器，光催化剂和半导体器件领域提供新的研究策略。

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  • 来源
    《Nanotechnology》 |2018年第27期|共10页
  • 作者

    Zhang Jitao; Zhu Zijian; Chen Changmiao; Chen Zhi; Cai Mengqiu; Qu Baihua; Wang Taihong; Zhang Ming;

  • 作者单位

    Hunan Univ Sch Phys &

    Elect State Key Lab Chemo Biosensing &

    Chemometr Key Lab Micro Nano Optoelect Devices Minist Educ Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Phys &

    Elect State Key Lab Chemo Biosensing &

    Chemometr Key Lab Micro Nano Optoelect Devices Minist Educ Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Phys &

    Elect State Key Lab Chemo Biosensing &

    Chemometr Key Lab Micro Nano Optoelect Devices Minist Educ Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Phys &

    Elect State Key Lab Chemo Biosensing &

    Chemometr Key Lab Micro Nano Optoelect Devices Minist Educ Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Phys &

    Elect State Key Lab Chemo Biosensing &

    Chemometr Key Lab Micro Nano Optoelect Devices Minist Educ Changsha 410082 Hunan Peoples R China;

    Xiamen Univ Pen Tung Sah Inst Micronano Sci &

    Technol Xiamen 361005 Peoples R China;

    Hunan Univ Sch Phys &

    Elect State Key Lab Chemo Biosensing &

    Chemometr Key Lab Micro Nano Optoelect Devices Minist Educ Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Phys &

    Elect State Key Lab Chemo Biosensing &

    Chemometr Key Lab Micro Nano Optoelect Devices Minist Educ Changsha 410082 Hunan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    hydrogen sulfide sensor; nanofibers; ZnO; oxygen vacancies;

    机译：硫化氢传感器;纳米纤维;ZnO;氧气职位空缺;

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