RESEARCH ARTICLE

 

Preparation of CN_x/carbon nanotube intramolecular junctions by switching gas sources in continuous chemical vapour deposition

 

 

Yong Cao^{I, II, *}; Bingtao Liu^I; Qingze Jiao^II; Yun Zhao^II

^IInstitute of Environment and Municipal Engineering, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, PR China
^IISchool of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, PR China

 

 

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ABSTRACT

Nitrogen-doped carbon nanotubes (CN_x)/carbon nanotube intramolecular junctions were prepared by a simple continuous chemical vapour deposition (CVD) method at 650 °C. The catalyst was obtained by calcination of a layered double hydroxide precursor containing Fe and Mg. By switching between hexane and ethylenediamine repeatedly in the CVD process, multiple intramolecular junctions composed of CN_x with a bamboo-like structure and empty hollow carbon nanotubes were observed, and such different structures at both sides of the junctions indicated some interesting properties and offered potential applications for future nanodevices.

Keywords: Nitrogen-doped carbon nanotubes, junction, chemical vapour deposition

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Full text available only in pdf format.

 

Acknowledgements

This work was conducted with financial support from the Chinese National '863' (No. 2006AA03Z570) fund, Excellent Young Scholars Research Fund of Beijing Institute of Technology (No. c2007YS0404) and Research Startup Fund of North China Institute of Water Conservancy and Hydroelectric Power (No. 201011).

 

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Received 27 January 2011
Revised 14 March 2011
Accepted 24 March 2011

 

 

* To whom correspondence should be addressed. E-mail: caoyong@ncwu.edu.cn