|
|||||
|
|
| 掺SiO_2的WO_3纳米粉体的合成及其NO_2气敏特性 | |
| 引用本文： | 魏少红,张岩,朱会敏,牛新书.掺SiO_2的WO_3纳米粉体的合成及其NO_2气敏特性[J].电子元件与材料,2006,25(9):16-18. |
| 作者姓名： | 魏少红 张岩 朱会敏 牛新书 |
| 作者单位： | 1. 安阳师范学院化学系,河南,安阳,455000 2. 平顶山工学院化学系,河南,平顶山,467000 3. 河南师范大学化学与环境科学学院,河南,新乡,453002 |
| 基金项目： | 河南省自然科学基金;安阳师范学院校科研和教改项目 |
| 摘 要： | 采用sol-gel法制备了一系列掺有SiO2的WO3纳米粉体,通过X射线衍射仪、透射电镜等测试手段分析了材料的微观结构,测试了材料的气敏性能,探讨了煅烧温度、掺杂量、工作温度等对材料气敏性能的影响。研究发现:适量SiO2的掺杂有利于提高WO3对NO2气体的灵敏度,其中SiO2掺杂量为3%(质量分数)的气敏元件,在150℃工作温度下,灵敏度达713,响应–恢复时间分别为7s与26s。对WO3的NO2气敏机理也进行了探讨。 |
| 关 键 词： | 电子技术 WO_3 sol-gel法 气敏性能 NO_2 |
| 文章编号： | 1001-2028（2006）09-0016-03 |
| 收稿时间： | 2006-04-16 |
| 修稿时间： | 2006-04-16 |
Preparation of Doping WO3 Nano-powder and Its Gas Sensing Property to NO2 |
|
| WEI Shao-hong,ZHANG Yan,ZHU Hui-min,NIU Xin-shu.Preparation of Doping WO3 Nano-powder and Its Gas Sensing Property to NO2[J].Electronic Components & Materials,2006,25(9):16-18. | |
| Authors: | WEI Shao-hong ZHANG Yan ZHU Hui-min NIU Xin-shu |
| Abstract: | The nano-powder of SiO2-WO3 was prepared by sol-gel method. The microstructure was characterized through XRD and TEM. The gas sensing properties to NO2 were also measured. The effects of SiO2 content and calcine temperature and the sensors’ operating temperature on the sensitivity were investigated. The results show that the sensitivity to NO2 rises when the content of SiO2 is suitable. The sensor has high sensitivity and good selectivity to NO2 when mass fraction of SiO2 is 3%. The gas sensing mechanism was also discussed. |
| Keywords: | WO3 NO2 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |