多壁碳纳米管膜湿敏特性的研究  

Study on the humidity sensitive behavior of multiwalled carbon nanotubes

作　　者：吴子华[1] 王万录[1] 廖克俊[1] 王永田[1] 胡陈果[1] 付光宗[1] 万步勇[1] 余鹏[1] 

机构地区：[1]重庆大学数理学院应用物理系,重庆400044

出　　处：《物理学报》2004年第10期3462-3466,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :60 3 760 3 2 )资助的课题~~

摘　　要：研究了多壁碳纳米管 (MWNTs)薄膜的湿敏特性 ,实验所用的多壁碳纳米管是用热灯丝化学气相沉积法 (CVD)合成的 .分别对未修饰和修饰的多壁碳纳米管膜温度和湿度特性进行研究后发现 ,修饰的多壁碳纳米管对温度和湿度非常敏感 ,且对湿度的响应时间和恢复时间短 ,重复性好 .而未修饰的多壁碳纳米管对温度和湿度不太敏感 .对修饰多壁碳纳米管的湿敏特性进行了理论分析 。The humidity sensitive properties of multiwalled carbon nanotubes(MWNTs) films have been studied.Multiwalled carbon nanotubes were synthesized by hot filament chemical vapor deposition.Carboxyl modified and non_modified MWNTs film's temperature effect and humidity sensitive behavior were investigated separately.The results showed that carboxyl modified MWNTs films were very sensitive to temperature and humidity,response and restored time were much faster than that of non_modified MWNTs films.The origin of humidity sensitivity of MWNTs films were also discussed,and the theoretical formula was given.

关 键 词：多壁碳纳米管 湿敏特性 表示式 化学气相沉积法 修饰 薄膜 合成 恢复时间 敏感 研究 

分 类 号：TB383[一般工业技术—材料科学与工程]