张哲娟,孙卓,林丽锋,冯涛,高阳,陈奕卫,杨介信

• 1:华东师范大学纳光电集成与先进装备教育部工程研究中心
• 2:上海纳晶科技有限公司

摘要(Abstract)：

以乙炔为原料气,采用铬-镍复合催化剂,在550℃下,由化学气相沉积法(CVD)制得了直径为20~300nm的多壁碳纳米管(MWNT)。经过45min的高能球磨处理后,通过空气氧化法对所获碳纳米管进行提纯,去除了碳纳米管中的无定形碳、碳纳米颗粒等非晶碳成分,提高了碳纳米管的纯度;并研究了提纯温度和场发射特性的关系。用扫描电镜、Raman光谱对其形貌和结构进行了表征。结果表明:碳纳米管在空气中,400~450℃加热10min后,非晶碳成分基本去除,纯度得到提高可以得到优化的场发射特性,如低的阈值电场和高场发射电流等。

关键词(KeyWords)： 碳纳米管;高能球磨;空气氧化;场发射性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50672026);; 上海市纳米专项(No.0752nm011);; 上海市科委科技攻关项目(No.06DZ11404);; 上海市经委高新技术产业科技开发项目

作者(Author): 张哲娟,孙卓,林丽锋,冯涛,高阳,陈奕卫,杨介信

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