Ozone/UV-light oxidation of multiwall carbon nanotubes (MWCNTs)

Shahir Hussain; S. S. Islam; . Harsh

doi:10.1117/12.924965

15 October 2012 Ozone/UV-light oxidation of multiwall carbon nanotubes (MWCNTs)

Shahir Hussain, S. S. Islam, . Harsh

Proceedings Volume 8549, 16th International Workshop on Physics of Semiconductor Devices; 85491P (2012) https://doi.org/10.1117/12.924965
Event: 16th International Workshop on Physics of Semiconductor Devices, 2011, Kanpur, India

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 I_D*/I_D increases continually with increasing the ozone oxidation time which confirm the reduction of impurities from the MWCNTs.

Citation Download Citation

Shahir Hussain, S. S. Islam, and . Harsh "Ozone/UV-light oxidation of multiwall carbon nanotubes (MWCNTs)", Proc. SPIE 8549, 16th International Workshop on Physics of Semiconductor Devices, 85491P (15 October 2012); https://doi.org/10.1117/12.924965

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