• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Preparation of WO_3 nanoparticles and application to NO_2 sensor
【24h】

Preparation of WO_3 nanoparticles and application to NO_2 sensor

机译：WO_3纳米粒子的制备及其在NO_2传感器中的应用

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

WO_3 nanoparticles were prepared by evaporating tungsten filament under a low pressure of oxygen gas, namely, by a gas evaporation method. The crystal structure, morphology, and NO_2 gas sensing properties of WO3 nanoparticles deposited under various oxygen pressures and annealed at different temperatures were investigated. The particles obtained were identified as monoclinic WO_3. The particle size increased with increasing oxygen pressure and with increasing annealing temperature. The sensitivity increased with decreasing particle size, irrespective of the oxygen pressure during deposition and annealing temperature. The highest sensitivity of 4700 to NO_2 at 1 ppm observed in this study was measured at a relatively low operating temperature of 50 ℃; this sensitivity was observed for a sensor made of particles as small as 36 nm.
机译：通过在氧气的低压下蒸发钨丝，即通过气体蒸发法，制备WO_3纳米颗粒。研究了在不同氧气压力下沉积并在不同温度下退火的WO3纳米颗粒的晶体结构，形貌和NO_2气敏特性。所得颗粒鉴定为单斜晶WO_3。粒度随着氧气压力的增加和退火温度的增加而增加。灵敏度随着颗粒尺寸的减小而增加，而与沉积过程中的氧气压力和退火温度无关。在相对较低的50℃工作温度下，本研究中观察到4700对1 ppm的NO_2的最高灵敏度。对于由小至36 nm的颗粒制成的传感器，可以观察到这种灵敏度。

著录项

  • 来源
    《Applied Surface Science》 |2009年第4期|1050-1053|共4页
  • 作者

    Dan Meng; Toshinari Yamazaki; Yanbai Shen; Zhifu Liu; Toshio Kikuta;

  • 作者单位

    Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan;

    Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan;

    Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan;

    Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan;

    Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan;

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

    WO_3; gas evaporation; nanoparticle; gas sensor; NO_2;

    机译：WO_3;气体蒸发纳米粒子气体传感器NO_2;

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