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High density oxidative plasma unzipping of multiwall carbon nanotubes

Thomas, Rajesh and Hembram, K P S S and Kumar, Mohan B V and Rao, Mohan G (2017) High density oxidative plasma unzipping of multiwall carbon nanotubes. In: RSC ADVANCES, 7 (76). pp. 48268-48274.

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Official URL: http://doi.org/10.1039/c7ra04318j


We report the oxidative plasma-assisted unzipping of multiwall carbon nanotubes (MWCNTs). The exposure of oxygen plasma causes the CNTs to form initial cracks followed by the oxidation of reactive carbon species. The volatile C-O species escape and create a channel for the next oxygen molecule to diffuse into the interior of the CNT. Further oxidation results in complex C-O structures and the formation of bead like structures. These bead structures retain the strain and transform to petal like nano ribbons, releasing the excessive strain. Overall, the dimensions and morphology of the CNTs change with the two step oxidation and three step unzipping processes. The revealing of the nanostructured morphology is unique for oxygen plasma, in contrast to nitrogen and hydrogen plasma.

Item Type: Journal Article
Publication: RSC ADVANCES
Additional Information: Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 17 Nov 2017 05:03
Last Modified: 17 Nov 2017 05:03
URI: http://eprints.iisc.ac.in/id/eprint/58287

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