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首页> 外文期刊>IEEE sensors journal >High-Performance Formaldehyde Gas Sensor Based on Cu-Doped Sn3O4 Hierarchical Nanoflowers
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High-Performance Formaldehyde Gas Sensor Based on Cu-Doped Sn3O4 Hierarchical Nanoflowers

机译：基于Cu-掺杂的SN3O4分层纳米割草机的高性能甲醛气体传感器

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摘要

Gas sensors with high response, low operating temperature and superior selectivity are highly desired for monitoring toxic gases in the environment. Herein, a formaldehyde (HCHO) gas sensor with outstanding sensing properties is proposed based on Cu-doped Sn3O4 hierarchical nanoflowers that are synthesized via a facile hydrothermal method. The Cu-doped Sn3O4 gas sensors exhibit conspicuously improved sensing performance to HCHO compared with the pure Sn3O4 gas sensor at a relatively low operating temperature of 160 degrees C. Specifically, the gas sensor based on the 4 wt% Cu-doped Sn3O4 composite exhibits a high response up to 53 toward 100 ppm HCHO, a fast response time of 5 s, and low detection limit of 1 ppm. In addition, the prepared Cu-doped Sn3O4 gas sensor possesses conspicuous advantages comprising a good selectivity, perfect reproducibility and excellent long-time stability. The sensing mechanism of the proposed gas sensor is explained by the electron depletion theory, and the possible reasons for the improvement of sensing properties by Cu doping are also discussed. It's strongly believed that the Cu-doped Sn3O4 sensor has a practical application in HCHO detection.
机译：高响应，低操作温度和优异选择性的气体传感器受到监测环境中的有毒气体。这里，基于Cu掺杂的SN3O4分层纳米辊通过容易水热法合成，提出具有优异感测性能的甲醛（HCHO）气体传感器。与纯SN3O4气体传感器相对较低的160℃的纯SN3O4气体传感器相比，Cu掺杂的SN3O4气体传感器表现出显着改善的感测性能。具体地，基于4wt％Cu掺杂的Sn3O4复合材料的气体传感器呈现高达53升至100ppm Hcho的高响应，快速响应时间为5 s，低检测限为1 ppm。此外，制备的Cu掺杂的SN3O4气体传感器具有具有良好选择性，完美的再现性和优异的长期稳定性的显着优点。还讨论了所提出的气体传感器的感测机理，并讨论了Cu掺杂改善感测性能的可能原因。强烈认为，Cu掺杂的SN3O4传感器在HCHO检测中具有实际应用。

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  • 来源
    《IEEE sensors journal》 |2020年第13期|6945-6953|共9页
  • 作者

    Wang Lei; Li Yang; Yue Wenjing; Gao Song; Zhang Chunwei; Chen Zhenxiang;

  • 作者单位

    Univ Jinan Sch Informat Sci & Engn Jinan 250022 Peoples R China;

    Univ Jinan Sch Informat Sci & Engn Jinan 250022 Peoples R China|Univ Jinan Shandong Prov Key Lab Network Based Intelligent C Jinan 250022 Peoples R China;

    Univ Jinan Sch Informat Sci & Engn Jinan 250022 Peoples R China|Univ Jinan Shandong Prov Key Lab Network Based Intelligent C Jinan 250022 Peoples R China;

    Univ Jinan Sch Informat Sci & Engn Jinan 250022 Peoples R China|Univ Jinan Shandong Prov Key Lab Network Based Intelligent C Jinan 250022 Peoples R China;

    Univ Jinan Sch Informat Sci & Engn Jinan 250022 Peoples R China|Univ Jinan Shandong Prov Key Lab Network Based Intelligent C Jinan 250022 Peoples R China;

    Univ Jinan Sch Informat Sci & Engn Jinan 250022 Peoples R China|Univ Jinan Shandong Prov Key Lab Network Based Intelligent C Jinan 250022 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gas sensor; Sn3O4; hierarchical nanoflowers; formaldehyde; hydrothermal;

    机译：气体传感器;SN3O4;等级纳米割草机;甲醛;水热;

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