| 溶胶-凝胶法纳米WO3材料的合成、表征及气敏性能 |
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| 引用本文： | 魏少红,行春丽,牛新书,蒋凯. 溶胶-凝胶法纳米WO3材料的合成、表征及气敏性能[J]. 功能材料, 2005, 36(9): 1401-1403 |
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| 作者姓名： | 魏少红 行春丽 牛新书 蒋凯 |
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| 作者单位： | 安阳师范学院,化学系,河南,安阳,455000;焦作大学,生化与环境工程系,河南,焦作,454003;河南师范大学,化学与环境科学学院,河南,新乡,453002 |
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| 基金项目： | 河南省杰出青年科学基金资助项目（0012）;河南省自然科学基金资助项目（004030300） |
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| 摘 要： | 采用溶胶-凝胶法制备了一系列掺杂有SiO2的WO3纳米粉体，通过TEM、XRD等分析手段对产物粉体的粒度、晶相结构进行了表征，测试了材料的气敏性能，探讨了煅烧温度、掺杂量、工作温度对材料气敏性能的影响。结果表明：适量SiO2的掺杂有利于提高WO3对NO2气体的灵敏度，其中掺杂量为3％（质量分数）的气敏元件在较低的工作温度下气敏性能突出。
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| 关 键 词： | WO3 气敏传感器 溶胶-凝胶法 气敏性能 NO2 |
| 文章编号： | 1001-9731(2005)09-1401-03 |
| 收稿时间： | 2004-12-06 |
| 修稿时间： | 2005-04-21 |
Synthesis, characterization and gas sensing properties of nanocrystal WO3 materials by sol-gel method |
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| WEI Shao-hong,XING Chun-li,NIU Xin-shu,JIANG Kai. Synthesis, characterization and gas sensing properties of nanocrystal WO3 materials by sol-gel method[J]. Journal of Functional Materials, 2005, 36(9): 1401-1403 |
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| Authors: | WEI Shao-hong XING Chun-li NIU Xin-shu JIANG Kai |
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| Abstract: | The powder of SiO_2-WO_3 was prepared by sol-gel method.The microstructure was characterized through XRD and TEM.The sensitivity to NO_2 sensing properties was measured.The effects of SiO_2 content and calcine temperature and the sensors'operating temperature on the sensitivity were investigated.The results show that the sensitivity to NO_2 rises when the content of SiO_2 is suitable.The sensor has high sensitivity and good selectivity to NO_2 when mass fraction of SiO_2 is 3wt%. |
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| Keywords: | WO3 gas sensor sol-gel method gas sensing property NO2 |
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