基于SmFeO_3纳米晶粒的甲醇传感器  

Research on Methanol Gas Sensor Based on SmFeO_3 Nanocrystalline

作　　者：吉文哲[1] 朱凯[1] 胡明江[2] 李文莉[2] 徐晓寒[2] 

机构地区：[1]商丘职业技术学院汽车工程系,河南商丘476100 [2]河南城建学院能源与建筑环境工程学院,河南平顶山467036

出　　处：《仪表技术与传感器》2015年第10期1-3,9,共4页Instrument Technique and Sensor

基　　金：河南省科技厅重点攻关计划项目(112102210363);河南省高等学校重点科研项目(15A470006);河南城建学院大学生创新基金项目(2015甲E02502B;2015甲E02504B)

摘　　要：以溶胶-凝胶法制备了SmFeO3复合纳米晶粒,采用提拉法涂敷于带有铂电极的氧化铝陶瓷管表面形成敏感薄膜,设计了一种新型甲醇传感器。在气体传感器静态测试装置上,测试了甲醇传感器敏感特性、选择特性和动态响应特性。结果表明,提拉次数为3的甲醇传感器(SFO_3)灵敏度为97.65%,动态响应时间为10.12s,恢复时间分别为14.26s,持续工作时间5.5月。该研究工作对推动甲醇-汽油混合燃料在汽车等方面的应用奠定了基础。SmFeO3 composite nanocrystalline of methanol gas sensor were prepared by sol- gel method. A new film- type methanol gas sensor was designed with SmFeO3 composite nanocrystallines transferred onto an alumina ceramic tube with Pt electrodes by dip- coating method. These characteristic tests of methanol gas sensors were carried out on the traits of sensitive performance,dynamic response,interference and stability in gas sensor static test system. The conclusion demonstrates that the sensitivity of methanol gas sensor was 97. 65%,the dynamic response time was 10. 12 s,and the recover time was 14. 26 s,and its continuous time was 5. 5 months. These are ensured that methanol gas sensor based on SFO_3 composite nanocrystalline provides the foundation to promote the applications of methanol- gasoline mixture fuel to automobile.

关 键 词：溶胶-凝胶法 纳米晶粒 敏感薄膜 甲醇传感器 混合燃料 在线检测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]