Spectroscopic Investigation of Modified Single Wall Carbon Nanotube (SWCNT)
S Hussain, P Jha, A Chouksey, R Raman, S.S. Islam, T Islam, P.K Choudhary
DOI: 10.4236/jmp.2011.26063   PDF   HTML     9,593 Downloads   22,051 Views   Citations


We have investigated the effects of chemical treatment on Single Wall Carbon Nanotube (SWCNT) before and after being modified with HNO3/H2SO4 by Raman, FTIR and UV-Vis-NIR spectroscopy. The results show successful carboxylation of the CNT sidewalls as observed from FTIR and UV-Vis-NIR spectroscopy. This successful functionalization is achieved in 6-8 hrs of refluxing. We also report changes in the first and second order Raman spectra of SWNTs functionalized with oxygenated groups. During the experiment, we observe some important Raman features: Radial breathing mode (RBM), Tangential mode (G-band), and Disordered mode (D-band); which are affected due to the chemical oxidation of carbon nanotubes. We found that the ratio of D- to the G-band intensity (Id/Ig), increase after functionalization and the RBM mode in acid treated SWCNTs is almost disappeared.

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S. Hussain, P. Jha, A. Chouksey, R. Raman, S. Islam, T. Islam and P. Choudhary, "Spectroscopic Investigation of Modified Single Wall Carbon Nanotube (SWCNT)," Journal of Modern Physics, Vol. 2 No. 6, 2011, pp. 538-543. doi: 10.4236/jmp.2011.26063.

Conflicts of Interest

The authors declare no conflicts of interest.


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