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Effect of Different Catalysts on Growth of CNx Nanotubes by Thermal Decomposition
Ding Pei*,Chao Mingju,Liang Erjun,Guo Xinyong,Du Zuliang
Author NameAffiliationE-mail
Ding Pei* Department of Applied Science, Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450015; School of Physical Science and Engineering, Key Laboratory of Materials Physics, Ministry of Education of China, Zhengzhou University, Zhengzhou 450 peiding76@163.com  
Chao Mingju School of Physical Science and Engineering, Key Laboratory of Materials Physics, Ministry of Education of China, Zhengzhou University, Zhengzhou 450052  
Liang Erjun School of Physical Science and Engineering, Key Laboratory of Materials Physics, Ministry of Education of China, Zhengzhou University, Zhengzhou 450052  
Guo Xinyong Laboratory of Special Functional Materials, Henan University, Kaifeng 475001  
Du Zuliang Laboratory of Special Functional Materials, Henan University, Kaifeng 475001  
Abstract:
CNx nanotubes was synthesized by thermal decomposition ethylenediamine catalyzed by pure iron, cobalt, nickel, and ferrocene. The effect of the catalyst on the CNx nanotubes’ morphology and yield was studied. The catalysis growth mechanism was also discussed. The CNx nanotubes with the “bamboo-like” structure and lower yield are produced when iron or ferrocene is used as the catalyst, whereas the curved CNx nanotubes with many pleats through the nanotube walls and higher yield are generated when cobalt is used. The CNx nanotubes catalyzed by nickel are only helix tubes with the diameter of about 500 nm. Raman spectroscopy studies show that the CNx nanotubes catalyzed by ferrocene have a worse crystallinity due to a higher nitrogen incorporation.
Key words:  CNx nanotubes, Thermal decomposition, Catalyst, Raman spectroscopy
FundProject:
不同催化剂对热解法制备CNx纳米管的影响
丁佩*,晁明举,梁二军,郭新勇,杜祖亮
摘要:
利用铁、钴、镍以及二茂铁为催化剂在高温下热解乙二胺制备CNx纳米管,研究了不同催化剂对CNx纳米管的形貌、结构及产量的影响,并对其催化机理进行了初步讨论.二茂铁和铁催化都能制备出"竹节状"结构的CNx纳米管,但产量较低.钴催化生成CNx纳米管多弯曲,管壁多褶皱,产量较高.镍催化只生成了直径500 nm左右的螺旋管.拉曼光谱研究进一步表明,二茂铁催化生成"竹节状"结构CNx纳米管由于氮的掺杂程度相对较高而结晶有序度较低.
关键词:  CNx纳米管  高温热解  催化剂  拉曼光谱
DOI:10.1088/1674-0068/18/3/433-438
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