Title
Temperature-Dependent Growth of 36 Inner Nanotubes inside Nickelocene, Cobaltocene and Ferrocene-Filled Single-Walled Carbon Nanotubes
Author
Marianna V. Kharlamova
Institute of Materials Chemistry, Vienna University of Technology
Author
Abstract
We have investigated the effects of temperature, diameter and metal catalyst type on the growth of inner nanotubes inside metallocene-filled single-walled carbon nanotubes (SWCNTs). The effects on the yield of different chiralities of inner nanotubes were scrutinized by multifrequency Raman spectroscopy. The investigated diameters range from ~0.7 to 1.3 nm and comprise 36 distinct chiralities. For all three investigated metals (Ni, Co, Fe), there is a linear correlation of growth temperature with nanotube diameter. The common slope for these metals is found to be 40.5 °C/Å. The temperature difference between the largest and the smallest diameter tubes amounts to ~230 °C for all three precursors. The growth temperatures are offset by 34 °C from Ni to Co and another 28 °C from Co to Fe. The quantified correlations of temperature, diameter and metal catalyst type provide the basis for engineering the diameter-specific growth of nanotubes.
Keywords
single-walled carbon nanotubegrowthmetallocenegrowth kineticsRaman spectroscopy
Object type
Language
English [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:1588424
Appeared in
Title
Nanomaterials
Volume
11
Issue
11
ISSN
2079-4991
Issued
2021
Publisher
MDPI AG
Date issued
2021
Access rights
Rights statement
© 2021 by the authors

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