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Raman spectra and thermal stability analysis of 0.4nm freestanding single-walled carbon nanotubes
Ye J.T.; Tang Z.K.
2005-07-15
Source PublicationPhysical Review B - Condensed Matter and Materials Physics
ISSN10980121 1550235X
Volume72Issue:4
AbstractThe thermal stability of ultrasmall 0.4nm single-walled carbon nanotubes (SWNTs) are studied by means of Raman-scattering measurements under a vacuum. The 0.4nm SWNTs are very stable when they are confined inside the channels of the AlPO4-5 zeolite crystal. When these SWNTs are extracted from the channels into free space, however, they become thermally unstable because of the strong curvature effect. The in situ Raman-scattering measurement under 1×10-5mbar shows all three structures of the 0.4-nm-sized SWNTs are destroyed between 730to790K, a temperature range much lower than that of large-sized SWNTs. The (5,0) tube is only destroyed after the temperature reaches 790K and seems slightly more stable than the other two structures: the (3,3) and (4,2) tubes. A reference measurement under UHV conditions confirms that the 0.4nm SWNTs are destroyed after the same thermal treatment indicating that the structural degradation is determined by the curvature effect other than oxidation. © 2005 The American Physical Society.
DOI10.1103/PhysRevB.72.045414
URLView the original
Language英語
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Cited Times [WOS]:24   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
AffiliationHong Kong University of Science and Technology, William Mong Institute of Nano Science & Technology
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GB/T 7714
Ye J.T.,Tang Z.K.. Raman spectra and thermal stability analysis of 0.4nm freestanding single-walled carbon nanotubes[J]. Physical Review B - Condensed Matter and Materials Physics,2005,72(4).
APA Ye J.T.,&Tang Z.K..(2005).Raman spectra and thermal stability analysis of 0.4nm freestanding single-walled carbon nanotubes.Physical Review B - Condensed Matter and Materials Physics,72(4).
MLA Ye J.T.,et al."Raman spectra and thermal stability analysis of 0.4nm freestanding single-walled carbon nanotubes".Physical Review B - Condensed Matter and Materials Physics 72.4(2005).
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