Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 20, Pages 5924-5928Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201500477
Keywords
carbon nanotubes; chirality; kinetics; nucleation; zigzag carbon nanotubes
Categories
Funding
- NSFC [21303056, 21273189]
- Shanghai Pujiang Program [13J1402600]
- Hong Kong RCF-GRF grant [BQ-26K, B-Q35N, B-Q41N]
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Owing to the unique structure of zigzag (ZZ) carbon nanotubes (CNTs), their ring-by-ring growth behavior is different from that of chiral or armchair (AC) CNTs, on the rims of which kinks serve as active sites for carbon attachment. Through first-principle calculations, we found that, because of the high energy barrier of initiating a new carbon ring at the rim of a ZZCNT, the growth rate of a ZZCNT is proportional to its diameter and significantly (10-1000 times) slower than that of other CNTs. This study successfully explained the broad experimental observation of the lacking of ZZ CNTs in CNT samples and completed the theory of CNT growth.
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