• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Selectively enhanced sensing performance for oxidizing gases based on ZnO nanoparticle-loaded electrospun SnO2 nanotube heterostructures
【24h】

Selectively enhanced sensing performance for oxidizing gases based on ZnO nanoparticle-loaded electrospun SnO2 nanotube heterostructures

机译：基于ZnO纳米颗粒加载的ElectroTum SnOtoTume的氧化气体选择性地增强了氧化气体的感测性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, we present gas sensors based on ZnO nanoparticle-loaded electrospun SnO2 nanotube (ZnO/SnO2) n-n heterostructures (HSs) synthesized by electrospinning combined with facile thermal decomposition. The sensing properties of the pristine SnO2 nanotubes (NTs) and ZnO/SnO2 HSs were investigated toward the representative oxidizing (NO2) and reducing (H-2, CO) gases. Results show that the as-prepared ZnO/SnO2 HSs exhibit selectively enhanced and diminished sensing performances for oxidizing and reducing gases, respectively. These phenomena are closely associated with the modulation of the local depletion layer on the surface of SnO2 nanoparticles (NPs) caused by charge transfer at the heterojunctions due to work function difference. A modified grain boundary-controlled sensing mechanism is proposed to describe charge transport in sensing layers based on the contact potential barriers between nanoparticles. Our study indicates that the selection of material system and their synergism are keys to the effective design of gas sensors with semiconducting metal oxide HSs.
机译：在这项工作中，我们通过静电纺丝与容易的热分解合成，呈基于ZnO纳米颗粒加载的Electrome纳米管（ZnO / SnO2）N-N异质结构（HSS）的气体传感器。研究了原始SnO2纳米管（NTS）和ZnO / SnO2 HSS的感测性能，朝向代表性氧化（NO2）和还原（H-2，CO）气体。结果表明，制备的ZnO / SnO2 HSS分别表现出氧化和减少气体的选择性增强和减少的感测性能。这些现象与在由功函数差异的异质结引起的SnO2纳米颗粒（NPS）表面上的局部耗尽层的调节密切相关。提出了一种改进的晶粒结构边界控制的传感机构，以描述基于纳米颗粒之间的接触电位屏障的感测层的电荷传输。我们的研究表明，材料系统的选择及其协同作用是具有半导体金属氧化物HSS的气体传感器的有效设计的关键。

著录项

  • 来源
    《RSC Advances》 |2016年第34期|共9页
  • 作者

    Diao Kaidi; Huang Yunpeng; Zhou Minjie; Zhang Jicheng; Tang Yongjian; Wang Shuxia; Liu Tianxi; Cui Xudong;

  • 作者单位

    Chongqing Univ Dept Appl Phys Chongqing 400044 Peoples R China;

    Fudan Univ Dept Macromol Sci State Key Lab Mol Engn Polymers Shanghai 200433 Peoples R China;

    CAEP Res Ctr Laser Fus Sci &

    Technol Plasma Phys Lab Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus Sci &

    Technol Plasma Phys Lab Mianyang 621900 Peoples R China;

    CAEP Res Ctr Laser Fus Sci &

    Technol Plasma Phys Lab Mianyang 621900 Peoples R China;

    Chongqing Univ Dept Appl Phys Chongqing 400044 Peoples R China;

    Fudan Univ Dept Macromol Sci State Key Lab Mol Engn Polymers Shanghai 200433 Peoples R China;

    CAEP Res Ctr Laser Fus Sci &

    Technol Plasma Phys Lab Mianyang 621900 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号