On-chip purification via liquid immersion of arc-discharge synthesized multiwalled carbon nanotubes
Hokkanen, M., Lautala, S., Shao, D., Turpeinen, T., Koivistoinen, J., & Ahlskog, M. (2016). On-chip purification via liquid immersion of arc-discharge synthesized multiwalled carbon nanotubes. Applied Physics A: materials science & processing, 122(7), Article 634. https://doi.org/10.1007/s00339-016-0154-0
Julkaistu sarjassa
Applied Physics A: materials science & processingTekijät
Päivämäärä
2016Tekijänoikeudet
© Springer-Verlag Berlin Heidelberg 2016. This is a final draft version of an article whose final and definitive form has been published by Springer. Published in this repository with the kind permission of the publisher.
Arc-discharge synthesized multiwalled carbon
nanotubes (AD-MWNT) have been proven to be of high
quality, but their use is very limited due to difficulties in
obtaining them in a clean and undamaged form. Here, we
present a simple method that purifies raw AD-MWNT
material in laboratory scale without damage, and that in
principle can be scaled up. The method consists of
depositing raw AD-MWNT material on a flat substrate and
immersing the substrate slowly in water, whereby the
surface tension force of the liquid–substrate contact line
selectively sweeps away the larger amorphous carbon
debris and leaves relatively clean MWNTs on the substrate.
We demonstrate the utility of the method by preparing
clean individual MWNTs for measurement of their Raman
spectra. The spectra exhibit the characteristics of highquality
tubes free from contaminants. We also show how
one concomitantly with the purification process can obtain
large numbers of clean suspended MWNTs.
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https://converis.jyu.fi/converis/portal/detail/Publication/26056031
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