摘要
利用低速球磨机对催化化学气相沉积法制备的多壁碳纳米管进行了球磨。透射电子显微镜实验结果表明,低速球磨机球磨可以使多壁碳纳米管开口和变短,球磨5h后碳纳米管开口和变短效果已经很明显;球磨20h后,发现碳纳米管变短到出现明显的团聚现象。X射线衍射实验结果表明,球磨20h后仍为多壁碳纳米管,每一层碳管仍为规则的石墨化结构。
The multi- wall carbon nanotubes(MCNTs) prepared by catalytic chem ical vapor deposition technique are ball milled by the low velocity ball mill. T ransmission electron microscopy reveals that the MCNTs become open and short aft er the low velocity ball milling, which is distinct only after 5 hours of ball m illing.The MCNTs aggregate seriously after 20 hours of ball milling.X- ray diff raction confirms that fragments of the MCNTs after ball milling keep their initi al graphite structure.
出处
《炭素技术》
CAS
CSCD
2005年第3期20-23,共4页
Carbon Techniques
基金
国家自然科学基金资助项目(50202007)
关键词
催化化学气相沉积法
多壁碳纳米管
球磨特性
Catalytic chemical vapor deposition technique
multi- wall carbon nanotubes
characterization of MCNTs after ball milling
