水介质电弧法碳纳米管填充NiO的研究

基本信息
作者: 王锐
学生学号:
班级:
系别： 机械工程系
专业： 机械工程及自动化
学校: 清 华 大 学
指导老师: 梁吉 教授
写作日期: 2002年6月26日
字数: 20,870
编号: 21
类别: 理工科〉自动化
级别: 硕士毕业论文
姓 名：

摘　要

用多壁碳纳米管来制造十亿赫兹振荡器要求在多壁碳纳米管中填充磁性物质。本文中，用水介质电弧法制备出的碳纳米管被用湿化学工艺填充了NiO：先把碳纳米管悬浮在硝酸镍的硝酸溶液中，回流煮沸数小时,再干燥、焙烧。与传统的湿化学工艺不同的是，碳纳米管在填充之前就用在~120℃的浓硝酸和浓硫酸中回流煮沸的方法打开了端帽。实验证明，对于水介质电弧法制备出的碳纳米管而言，这样可以获得高的填充率。在本文中，碳纳米管的纯化、开口和填充被仔细地研究以确定相关参数对这些工艺的影响。

关键字：碳纳米管 填充 氧化镍

Abstract

For the reality of MWNTs as Gigahertz Oscillators, the magnetic materials are expected to be filled in the MWNTs. In this article, the CNTs, which are prepared in an arc discharge in water, are filled with NiO by wet chemical techniques: the CNTs are suspended in the nitric solution of the nitric nickel and refluxed for several hours, followed by evaporation and calcination. Distinguishing from the traditional wet chemical techniques, the CNTs have been uncapped before filling using the way of being refluxed with the mixture of concentrated nitric acid and sulfur acid at ~120℃. The experiments prove that a high percentage of filled nanotubes is acquired for the CNTs prepared by arc vaporization in water. In this article, the purification, uncapping and filling of the CNTs are closely studied to make sure of correlations between the parameters and them.

Keywords: nanotube filling NiO