Double-walled carbon nanotubes with small diameters synthesized by catalytic chemical vapor deposition of methane

摘要：

Double-walled carbon nanotubes (DWNTs) with small diameters have been synthesized by catalytic chemical vapor deposition at 900 ℃ under a mixture of methane and hydrogen gas with a conditioning catalyst. The conditioning catalyst is obtained by sonication an ethanol solution containing Al2O3 powder and (NH4)6Mo7O24·4H2O. The mixture of Fe (NO3)3.9H2O and MgO powder is used as the catalyst of DWNTs growth. The results shows that the conditioning catalyst can improve the quality and the ratio of DWNTs in the products, and as-synthesized DWNTs have inner tube diameters of 0.62-0.88 nm and outer tube diameters of 1.21-1.33 nm.

关键词： Double-walled carbon nanotubes Chemical vapor deposition Electron microscopy

作者: 方光荣 李琴 王贤保

作者单位: 湖北大学 材料科学与工程学院,武汉 430062 湖北大学 材料科学与工程学院,武汉 430062;教育部有机功能分子合成与应用重点实验室,武汉 430062

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）