【作者】 赵建国； 郭全贵； 郭向云； 古玲； 李江； 屈文山； 郭永；

【Author】 ZHAO Jian-guo~(1,2),GUO Quan-gui~2,GUO Xiang-yun~2,GU Ling~1,LI Jiang~1, QV Wen-shan~1,GUO Yong~1 (1.Institute of Carbon Materials Science,Shanxi Datong University,Datong 037009,China; 2.Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China)

【机构】 大同大学炭材料研究所； 中国科学院山西煤炭化学研究所；

【摘要】 利用化学气相沉积工艺制备了螺旋形纳米碳管,并研究了纳米碳管的生长机理。结果表明,用硝酸钴和金属锡粉的混合物作催化剂前驱体,采用化学气相沉积工艺,可以得到不同形貌的螺旋形纳米碳管;通过调整工艺参数,可以得到纯度为80%,螺距为100～120nm,直径范围是80～100nm的螺旋形纳米碳管。生长机理研究表明,由于液态锡的存在,使纳米碳管各向同性的生长环境发生了变化,所以得到螺旋形纳米碳管。更多还原

【Abstract】 Helical carbon nanotubes were synthesized by a catalytic chemical vapor deposition method using acetylene as a carbon source and a mixture of powder and cobalt nitrate as catalyst.The tin powder have great influence on the appearance,diameter and pitch of the helical carbon nanotubes.By adjusting the process parameters, It is easier to get helical carbon nanotubes with 80%purity,a diameter between 80nm and 100nm,and a pitch of 100nm to 120nm.The result shows that tin plays an important role in the formation of helix-shaped carbon nanotubes.Since the presence of liquid tin,the growth of carbon nanotubes isotropic environment has changed,so helix-shaped carbon nanotubes were synthesized.更多还原