Journal
CRYSTAL RESEARCH AND TECHNOLOGY
Volume 51, Issue 12, Pages 702-707Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/crat.201600104
Keywords
carbon nanotube arrays; thermal chemical vapor deposition; computational fluid dynamics; gas flow field; gas circulation
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Funding
- Educational Commission of Hebei Province [ZD2016054]
- Natural Science Foundation of Hebei Province [F2015203373]
- Open Fund of IPOC [IPOC2014B004]
- Research Fund of Yanshan University [14LGB014]
- Doctoral Science Foundation of Yanshan University [B855]
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Multi-walled carbon nanotube arrays (MWCNTAs) were grown by thermal chemical vapor deposition (TCVD) in a horizontal furnace reactor. The scanning electron microscopy (SEM) results show that MWCNTAs grown on the bottom and the central of the quartz tube are different in one experiment. Moreover, the MWCNTAs grown on the central position are more aligned and longer than those on the bottom. A computational fluid dynamics (CFD) model was employed to investigate the gas flow field impact on the MWCNTAs growth. The results show that gas circulations appear after carriergas and carbonsource are injected into the quartz tube. Because of the existence of gas circulations, the gas flow field at the central of the quartz tube is more stable, which is conducive to the growth of MWCNTAs. The CFD simulation results match well with the experimental data.
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