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Proceedings Paper

Ozone/UV-light oxidation of multiwall carbon nanotubes (MWCNTs)
Author(s): Shahir Hussain; S. S. Islam; . Harsh
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Paper Abstract

We investigate the purification of as-prepared multi- wall carbon nanotubes (MWCNTs) by exposure to ultraviolet lamp (λ=185 nm). UV irradiation was conducted under ambient condition in a UV lamp chamber which had a layer of reflective aluminium foil inside to ensure the entire sample would have an even exposure to UV. Raman spectroscopy before and after UV exposure indicates the removal of non-nanotube material. The narrowing of D-band is consistent with highly purified nanotube which is seen in our results. Raman result shows that the ozone oxidation can remove the defect site of nanotubes. Intensity of G- and D*- band increases rapidly with increasing the oxidation time. Intensity ratio ID*/ID increases continually with increasing the ozone oxidation time which confirm the reduction of impurities from the MWCNTs.

Paper Details

Date Published: 15 October 2012
PDF: 7 pages
Proc. SPIE 8549, 16th International Workshop on Physics of Semiconductor Devices, 85491P (15 October 2012); doi: 10.1117/12.924965
Show Author Affiliations
Shahir Hussain, Jamia Millia Islamia (Central Univ.) (India)
S. S. Islam, Jamia Millia Islamia (Central Univ.) (India)
. Harsh, Jamia Millia Islamia (Central Univ.) (India)

Published in SPIE Proceedings Vol. 8549:
16th International Workshop on Physics of Semiconductor Devices
Monica Katiyar; B. Mazhari; Y N Mohapatra, Editor(s)

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