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首页> 外文期刊>RSC Advances >A CuO-ZnO nanostructured p-n junction sensor for enhanced N-butanol detection
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A CuO-ZnO nanostructured p-n junction sensor for enhanced N-butanol detection

机译：用于增强的正丁醇检测的CuO-ZnO纳米结构P-N结传感器

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摘要

Herein, a novel CuO-ZnO nanostructured p-n junction composite is prepared via the hydrothermal method. It is composed of a ZnO two dimensional (2-D) porous nanosheet assembly and leaf-like 2-D CuO nanoplates. Then, its gas sensing performance toward n-butanol is studied. The 2-D/2-D CuOZnO composite sensor shows 2.7 times higher sensitivity than that of pure ZnO at 220 degrees C. Moreover, its response to n-butanol is 3.5-84 times higher than those for other target gases. This reveals an excellent selectivity toward n-butanol. Its detection limit for n-butanol is calculated to be 0.4 ppm, indicating a potential advantage in low concentration detection. The significant enhancement of the composite's sensing performance can be firstly attributed to the p-n junction, which brings electronic sensitization for the composite sensor. Moreover, the porous structure and the open 2-D/2-D heterostructure also contribute to the sensing performance of the composite. These allow the gas molecules to diffuse rapidly, making chemisorption and surface reactions on the p-n junction more easy.
机译：在此，通过水热法制体制备新型CuO-ZnO纳米结构P-N结复合物。它由ZnO二维（2-D）多孔纳米片组件和叶片2-D CuO纳米板组成。然后，研究了朝向正丁醇的气体感测性能。 2-D / 2-D Cuozno复合传感器的灵敏度高出2.7倍，比纯ZnO在220℃下的浓度高2.此外，其对N-丁醇的反应比其他目标气体高3.5-84倍。这揭示了对正丁醇的优异选择性。其对正丁醇的检测限计算为0.4ppm，表明低浓度检测中的潜在优势。复合材料的感测性能的显着增强可以首先归因于P-N结，其为复合传感器带来电子敏化。此外，多孔结构和开放的2-D / 2-D异质结构也有助于复合材料的感测性能。这些允许气体分子快速扩散，使得在P-N交界处进行化学吸附和表面反应更容易。

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  • 来源
    《RSC Advances》 |2016年第3期|共8页
  • 作者

    Chen Yalu; Shen Zhurui; Jia Qianqian; Zhao Jiang; Zhao Zhe; Ji Huiming;

  • 作者单位

    Tianjin Univ Sch Mat Sci &

    Engn Key Lab Adv Ceram &

    Machining Technol Minist Educ Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Key Lab Adv Ceram &

    Machining Technol Minist Educ Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Key Lab Adv Ceram &

    Machining Technol Minist Educ Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Key Lab Adv Ceram &

    Machining Technol Minist Educ Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Key Lab Adv Ceram &

    Machining Technol Minist Educ Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Key Lab Adv Ceram &

    Machining Technol Minist Educ Tianjin 300072 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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