Chirality-dependent growth of single-wall carbon nanotubes as revealed inside nano-test tubes

Autor(en)

Marianna V. Kharlamova, Christian Kramberger, Takeshi Saito, Yuta Sato, Kazu Suenaga, Thomas Pichler, Hidetsugu Shiozawa

Abstrakt

Growth dynamics of single-wall carbon nanotubes (SWCNTs) have been studied with nickelocene as a precursor encapsulated in the interior of template SWCNTs. By means of multi-laser Raman spectroscopy, growth curves of nine different SWCNTs, (8,8), (12,3), (13,1), (9,6), (10,4), (11,2), (11,1), (9,3) and (9,2), have been determined upon in situ annealing at various temperatures. The data reveal that the nanotubes grow through fast and slow reaction pathways with high and low activation energies, respectively. While the activation energy of the slow growth is independent of the nanotube's chiral vector, that of the fast growth exhibits a monotonic increase as the tube diameter reduces from similar to 1.1 down to 0.8 nm and no dependency on the chiral angle, which can be attributed to the size-dependent properties of catalyst clusters. The chirality dependent catalytic growth properties exploited in this study provide the basis for a large-scale synthesis of single-chiral vector SWCNTs.

Organisation(en)

Elektronische Materialeigenschaften, Physik Nanostrukturierter Materialien

Externe Organisation(en)

National Institute of Advanced Industrial Science and Technology (AIST)

Journal

Nanoscale

Band

9

Seiten

7998-8006

Anzahl der Seiten

9

ISSN

2040-3364

DOI

https://doi.org/10.1039/c7nr01846k

Publikationsdatum

06-2017

Peer-reviewed

Ja

ÖFOS 2012

103020 Oberflächenphysik, 103018 Materialphysik, 210006 Nanotechnologie, 103009 Festkörperphysik

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Materialwissenschaften

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/4e733161-c8c2-4a37-a252-606d66c38397