3 Synthesis of graphitic carbon nitride nanosheets decorated spherical-like nickel oxide composites for carbon monoxide gas-sensing application
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Synthesis of graphitic carbon nitride nanosheets decorated spherical-like nickel oxide composites for carbon monoxide gas-sensing application

机译：石墨氮化物纳米片的合成装饰了用于一氧化碳气体传感应用的球状镍氧化物复合材料

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摘要

In this work, graphitic carbon nitride nanosheets decorated like nickel oxide microspheres (NiO/g-C3N4, Ni/CN) were successfully synthesised by a simple hydrothermal method. The morphologies of the as-prepared samples were analysed by scanning electron microscopy and the diameter of the microspheres was found to be about 2.5 μm. At an optimum working temperature of 240°C, the response to 500 ppm CO is 2.729 for the Ni/CN-10 (10 wt% g-C3N4 modified NiO) sensor, which is much higher than those of the NiO sensor (1.408). Besides the higher response, the Ni/CN sensors also showed good repeatability and stability for CO detection. Excellent gas sensitivity properties can be attributed to the p-n heterojunction formed at the interface, which can provide more potential active sites for surface reactions. In addition, the sensitisation of g-C3N4 also plays an important role in the improvement of CO-sensing performance.
机译：在这项工作中，石墨碳氮化物纳米型纳米片被镍氧化镍微球（NiO / G-C. 3 N 4 通过简单的水热法成功地合成Ni / Cn。通过扫描电子显微镜分析如制备的样品的形态，并且发现微球的直径为约2.5μm。在240℃的最佳工作温度下，对于Ni / CN-10的响应为500ppm CO为2.729（10wt％g-c 3 N 4 改进的NIO）传感器远高于NIO传感器（1.408）。除了较高的响应之外，Ni / CN传感器还显示出良好的重复性和CO检测稳定性。优异的气体敏感性可以归因于在界面处形成的P-N异质结，其可以为表面反应提供更多潜在的活性位点。此外，G-C的敏化 3 N 4 在改善协同感应性能方面也起着重要作用。

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  • 来源
    《Micro & nano letters》 |2019年第14期|1410-1413|共4页
  • 作者

    Xiaoze Li; Wendi Tian; Jianbo Jia; Jianliang Cao; Zhanying Zhang; Yan Wang;

  • 作者单位

    College of Chemistry and Chemical Engineering Henan Key Laboratory of Coal Green Conversion Henan Polytechnic University Jiaozuo 454000 People's Republic of China;

    College of Chemistry and Chemical Engineering Henan Key Laboratory of Coal Green Conversion Henan Polytechnic University Jiaozuo 454000 People's Republic of China;

    College of Chemistry and Chemical Engineering Henan Key Laboratory of Coal Green Conversion Henan Polytechnic University Jiaozuo 454000 People's Republic of China;

    College of Chemistry and Chemical Engineering Henan Key Laboratory of Coal Green Conversion Henan Polytechnic University Jiaozuo 454000 People's Republic of China;

    The Collaboration Innovation Center of Coal Safety Production of Henan Province College of Safety Science and Engineering Henan Polytechnic University Jiaozuo 454000 People's Republic of China;

    The Collaboration Innovation Center of Coal Safety Production of Henan Province College of Safety Science and Engineering Henan Polytechnic University Jiaozuo 454000 People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    carbon compounds; gas sensors; graphite; nanocomposites; nanosensors; nickel; nickel compounds; p-n heterojunctions; scanning electron microscopy;

    机译：碳化合物;气体传感器;石墨;纳米复合材料;纳米传染料;镍;镍化合物;P-n异质结;扫描电子显微镜;

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