修饰LiClO_4的多壁碳纳米管的湿敏特性研究  

Study of Humidity Sensing Properties of Multi-walled Carbon Nanotubes Modified with LiClO_(4)

作　　者：孙宇峰[1] 黄行九[2] 刘锦淮[2] 

机构地区：[1]安徽工程科技学院机械工程系,安徽芜湖241000 [2]中科院合肥智能机械研究所,安徽合肥230031

出　　处：《仪表技术与传感器》2006年第7期10-12,共3页Instrument Technique and Sensor

基　　金：安徽省教育厅自然科学基金资助项目(05KJ061)

摘　　要：介绍了多壁碳纳米管(MWNTs)的纯化和修饰LiClO4的方法,研究了其对水蒸气的敏感特性。比较了MnWO4(Hubnerite),BaTiO3(Perovskite),NiWO4(Huberite),ZnCr2O4(Spinel)作修饰物的湿敏特性。实验结果表明;LiClO4/MWNTs有良好的湿敏特性,响应时间为2 min,恢复时间在1 min左右。湿敏实验发现,和单纯的多壁碳纳米管不同,LiClO4/MWNTs的电阻不再先升高后下降。The humidity sensing properties of multi-walled carbon nanotubes modified with LiClO4 was investigated. The new sensing material was characterized by FESEM,FHR,Raman and XPS. For comparison, the humidity sensing characteristics of four conventional materials MnWO4 （hubnerite）, BaTiO3 （perovskite）, NiWO4 （huberite） and ZnCr2 O4 （spinel） were also discussed. The selectivity of the new sensing material was studied. Finally, the response to water vapour of the new sensing material was discussed by using a dynamic testing method.

关 键 词：多壁碳纳米管 湿敏特性 高氯酸锂 

分 类 号：TP211.2[自动化与计算机技术—检测技术与自动化装置]