Chiral vector and metal catalyst-dependent growth kinetics of single-wall carbon nanotubes

Autor(en)

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

Abstrakt

Single-wall carbon nanotubes (SWCNTs) are synthesized by the pyrolysis of cobaltocene and nickelocene in the interior of hosting SWCNTs. In situ Raman spectroscopy elucidates growth kinetics of SWCNTs of nine different chiral vectors (8,8), (12,3), (13,1), (9,6), (10,4), (11,2), (11,1), (9,3) and (9,2) that features faster and slower growth rates. The activation energy of the faster growth increases monotonically with the SWCNT diameter, while that of the slower growth doesn't show a clear dependence, and neither of them depends on the chiral angle. At a given temperature the growth rates of the inner tubes are much higher with nickel than those with cobalt. The activation energy of the faster growth is found to be independent of the metal type, whereas that of the slower growth is metal-specific. The information obtained in the present study is elemental for a large-scale and selective synthesis of single-chirality SWCNTs that are demanded for applications. (C) 2018 Elsevier Ltd. All rights reserved.

Organisation(en)

Elektronische Materialeigenschaften, Physik Nanostrukturierter Materialien

Externe Organisation(en)

National Institute of Advanced Industrial Science and Technology (AIST), Czech Academy of Sciences, Technische Universität Wien

Journal

Carbon

Band

133

Seiten

283-292

Anzahl der Seiten

10

ISSN

0008-6223

DOI

https://doi.org/10.1016/j.carbon.2018.03.046

Publikationsdatum

07-2018

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik, 210004 Nanomaterialien

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Chemie, Allgemeine Materialwissenschaften

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/85d20c94-b946-4af2-b7a7-667bc01655d6