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

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DOI: 10.4236/jmp.2011.26063                

Abstract

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 (I_d/I_g), increase after functionalization and the RBM mode in acid treated SWCNTs is almost disappeared.

Keywords

Single Wall Carbon Nanotubes, Functionalization, Raman Spectroscopy, Ftir and Uv-Vis-Nir Spectroscopy

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	E. T. Thostenson, Z. F. Ren and T. W. Chou, “Advances in the science and technology of carbon nanotubes and their composites: A review”, Composites Science and Technology, Vol. 61, Issue 13, October 2001, pp. 1899- 1912
[2]	S. Niyogi, M.A. Hamon, H. Hu, B. Zhao, P. Bhowmik, R. Sen, M.E.Itkis, and R.C. Haddon, “Chemistry of Single-Walled Carbon Nanotubes”, Acc. Chem. Res., Vol.35 (12), 2002, pp 1105-1113.
[3]	L.A.Girifalco, M. Hodack, and R.S Lee “Carbon nanotubes, buckyballs, ropes, and a universal graphitic potential” Phys. Rev. B, Vol. 62, 2000, pp. 13104-13110.
[4]	D. J. Nelson, H.Rhoads, and C.Brammer, “Covalently Sidewall-Functionalized SWNTs”, Journal of Physical Chemistry C ,Vol. 111, no. 48, August 2007, pp. 17872- 17878.
[5]	G.W. Lee, J. Kim, J. Yoon, J.S. Bae, B. Shin, I. Kim, W. Oh, and M. Ree, “Structural characterization of carboxylated multi-walled carbon nanotubes”, Thin Solid Films, Vol. 516, Issue 17, July 2008, pp. 5781-5784
[6]	C. H. Lau, R. Cervini, S.R. Clarke, M. G. Markovic, J. G. Matisons, S. C. Hawkins, C. P. Huynh, and G. P. Simon, “The effect of functionalization on structure and electrical conductivity of multi-walled carbon nanotubes”, Journal of Nanoparticle Research, Vol. 10, Supplement 1, December 2008,pp. 77-88.
[7]	M. S.D. Lekgoathi, J. Heveling, W.G. Augustyn, S.J. Husselman, P.G. Masha, and S. Rossouw, “Effect of Carboxylate Functional Groups on The Surface Area of SWCNTs”, International Journal of Nanotechnology and Applications, Vol. 2, no. 2, 2008, pp. 141-148.
[8]	S. Costa, B. Scheibe, M. Rummeli, and E. B. Palen, “Raman spectroscopy study on concentrated acid treated carbon nanotubes”, physica status solidi (b), Vol. 246, Issue 11-12, December 2009, pp. 2717-2720.
[9]	G. Ovejero, J. L. Sotelo, M. D. Romero, A. Rodriguez, M. A. Ocana, G. Rodriguez, J. Garcia, Multiwalled Carbon Nanotubes for Liquid-Phase Oxidation. Functionalization, Characterization, and Catalytic Activity, Industrial & Engineering Chemistry Research, Vol. 45, No.7, March 2006, pp. 2206-2212.
[10]	V. Skakalova, A. B. Kaiser, U. D.Weglikowska, K. Hrncarikova, and S. Roth, “Effect of Chemical treatment on Electrical Conductivity, Infrared Absorption, and Raman Spectra of Single-Walled Carbon nanotubes”, Journal of Physical Chemistry B, Vol. 109, No. 15, March 2005, pp. 7174-7181.
[11]	S. C. Tsang, P.J.F.Harris,and M.L.H.Green, “Thinning and opening of carbon nanotubes by oxidation using carbon dioxide”, Nature, Vol. 362, April1993, pp. 520-522.
[12]	H. T. Gomes, P. V. Samant, P. Serp, P. Kalck, J.L. Figueiredo, and J. L. Faria, “Carbon nanotubes and xerogels as supports of well-dispersed Pt catalysts for environmental applications”, Applied Catalysis B: Environmental, Vol. 54, Issue 3, December 2004, pp. 175-182.
[13]	R. Graupner, “Raman spectroscopy of covalently functionalized single-wall carbon nanotubes”, Journal of Raman Spectroscopy, Vol.38, June 2007, pp. 673-683.
[14]	S. Mirershadi, S. Z. Mortazavi, A. Reyhani, N. Moniri, and A. J. Novinrooz, “Effective Condition for Purification of Multi-Walled Carbon Nanotubes by Nitric Acid”, Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry, Vol. 39, Issue 4, May 2009, pp. 204-208.
[15]	R. Liu, The Functionalization of Carbon Nanotubes, Ph.D. dissertation, school of chemistry, University of NS W, Sydney, Australia, 2008.
[16]	K. H. An, J. S. Park, C.M. Yang, S. Y. Jeong, S. C. Lim, C. Kang, J.H. Son, M. S. Jeong, Y. H. Lee, A Diameter-Selective Attack of Metallic Carbon Nanotubes by Nitronium Ions, Journal of American Chemical Society, Vol. 127,No.14,March 2005,pp. 5196-5203.
[17]	M. Burghard,” Electronic and vibrational properties of chemically modified single wall carbon nanotubes”, Surface Science Reports, Vol. 58, Issues 1-4, August 2005, pp. 1-109.
[18]	Osorio AG, Silveira ICL, Bueno VL, and Bergmann CP, “H2SO4/HNO3/HCl-Functionalization and its effect on dispersion of carbon nanotubes in aqueous media”, Applied Surface Science, Vol. 255, No.5, December 2008, pp. 2485-2489.
[19]	A. Jorio, M.A. Pimenta, A. G. Souza Filho, R. Saito, G. Dresselhaus, and M. S. Dresselhaus, “Characterizing carbon nanotube samples with resonance Raman scattering”, New Journal of Physics Vol. 5,Issue1,October 2003, pp. 139.
[20]	E. Titus, N. Ali, G. Cabral, J. Gracio, P. Ramesh Babu, and M.J. Jackson ,“Chemically Functionalized Carbon Nanotubes and Their Characterization Using Thermogravimetric Analysis, Fourier Transform Infrared, and Raman Spectroscopy” Journal of Materials Engineering and Performance, Volume 15(2) April 2006,pp.182-186.
[21]	C. A. Dyke, and J. M. Tour, “Covalent Functionalization of Single-Walled Carbon Nanotubes for Materials Applications,” Journal of Physical Chemistry, Vol.108, No. 51, November 2004, pp. 11151-11159.
[22]	J. L. Bahr, J. Yang, D. V. Kosynkin, M. J. Bronikowski, R. Smalley, and J.M. Tour, “Functionalization of Carbon Nanotubes by Electrochemical Reduction of Aryl Diazonium Salts: A Bucky Paper Electrode”, Journal of American Chemical Society, Vol. 123, No. 27, June 2001, pp. 6536-6542.
[23]	V. A. Sinani, M. K. Gheith, A. A. Yaroslavov, A. A. Rakhnyanskaya, K. Sun, A. A. Mamedov, J. P Wicksted, and N. A. Kotov, “Aqueous Dispersions of Single-wall and Multiwall Carbon Nanotubes with Designed Amphiphilic Polycations”, Journal of American Chemical Society, Vol. 127, No. 10, February 2005, pp. 3463-3472.