Browse > Article
http://dx.doi.org/10.4313/TEEM.2008.9.5.209

A Rapid and Simple Homogenizing Method for the Purification of Single-walled Carbon Nanotubes  

Choi, Sang-Kyu (Department of Nanoscale Semiconducting Engineering, Hanyang University)
Jung, Seung-Il (Department of Nanoscale Semiconducting Engineering, Hanyang University)
Lee, Seung-Beck (Department of Nanoscale Semiconducting Engineering, Hanyang University)
Publication Information
Transactions on Electrical and Electronic Materials / v.9, no.5, 2008 , pp. 209-212 More about this Journal
Abstract
We developed a simple and effective purification method to obtain high-purity single-walled carbon nanotubes (SWCNTs) with low surface damage. The purification process consists of oxidization at $430^{\circ}C$ for 1 h in a furnace system of air atmosphere and homogenization in dilute hydrochloric acid solution for extremely short time. The role of homogenizer was examined during purification process in terms of purity and quality of purified SWCNTs. High-purity and low surface damage of SWCNT products was obtained using homogenizer which was operated at 8500 rpm for 10 min in the environment of 7 % HCI solution. From XRD spectra, we observed that metal catalysts were thoroughly removed. Raman spectra showed that the intensity values of crystallization ($I_{G}/I_{D}$) of purified SWCNTs were very similar with that of pristine SWCNTs. Moreover, the structure damage of purified SWCNTs was hard to find from electron microscopy. Consequently, homogenizing, which is a quick and simple manner, can be promising method for obtaining final SWCNTs with clearly high purity and crystallinity.
Keywords
SWCNT; Homogenizing; Electron microscopy; X-ray scattering; Raman spectroscopy;
Citations & Related Records
연도 인용수 순위
  • Reference
1 S. C. Lyu, B. C. Liu, C. Y. Park, H. K. Kang, C. W. Yang, and C. J. Lee, 'Large-scale synthesis of highquality single-walled carbon nanotubes by catalytic decomposition of ethylene', J. Phys. Chem. B., Vol. 108, p. 1613, 2004   DOI   ScienceOn
2 D. Chattopadhyay, I. Galeska, and F. Papadimitrakopoulos, 'Complete elimination of metal catalysts from single wall carbon nanotubes', Carbon, Vol. 40, p. 985, 2002   DOI   ScienceOn
3 S. Iijima and T. Ichihashi, 'Single-shell carbon nanotubes of 1-nm diameter', Nature, Vol. 363, p. 603, 1993   DOI   ScienceOn
4 P. Hou, C. Liu, Y. Tong, S. Xu, M. Liu, and H. M. Cheng, 'Purification of single-walled carbon nanotubes synthesized by the hydrogen arcdischarge method', J. Mater. Res., Vol. 16, p. 2526, 2001   DOI   ScienceOn
5 M. Zhang, M. Yudasaka, A. Koshio, and S. Iijima, 'Effect of polymer and solvent on purification and cutting of single-walled carbon nanotubes', Chem. Phys. Lett., Vol. 349, p. 25, 2001   DOI   ScienceOn
6 J. G. Wiltshire, A. N. Khlobystov, L. J. Li, S. G. Lyapin, G. A. D. Briggs, and R. J. Nicholas, 'Comparative studies on acid and thermal based selective purification of HiPCO produced singlewalled carbon nanotubes', Chem. Phys. Lett., Vol. 386, p. 239, 2004   DOI   ScienceOn
7 S. Banerjee and S. S. Wong, 'Rational sidewall functionalization and purification of single-walled carbon nanotubes by solution-phase ozonolysis', J. Phys. Chem. B., Vol. 106, p. 12144, 2002   DOI   ScienceOn
8 J. Maultzsch, S. Reich, and C. Thomsen. 'Raman scattering in carbon nanotubes revisited', Phys. Rev. B., Vol. 65, p. 233402, 2002   DOI   ScienceOn
9 B. C. Ha, J. Park, S. Y. Kim, and C. J. Lee, 'Invertigation of field emission and photoemission properties of high-purity single-walled carbon nanotubes', J. Phys. Chem. B., Vol. 110, p. 23742, 2006   DOI   ScienceOn
10 C. M. Yang, K. Kaneko, M. Yudasaka, and S. Iijima, 'Effect of purification on pore structure of HiPco single-walled carbon nanotube aggregates', Nano. Lett., Vol. 2, p. 385, 2002   DOI   ScienceOn
11 K. L. Strong, D. P. Anderson, K. Lafdi, and J. N. Kuhn, 'Purification process for single-wall carbon nanotubes', Carbon, Vol. 41, p. 1477, 2003   DOI   ScienceOn
12 H. M. Cheng, F. Li, G. Su, H. Y. Pan, L. L. He, and M. S. Dresselhaus, 'Large-scale and low-cost synthesis of single-walled carbon nanotubes by the catalytic pyrolysis of hydrocarbons', Appl. Phys. Lett., Vol. 72, p. 3282, 1998   DOI   ScienceOn
13 J. Liu, A. G. Rinzler, H. Dai, J. H. Hafner, D. T. Colbert, and R. E. Smalley, 'Fullerene pipes', Science, Vol. 280, p. 1253, 1998   DOI   ScienceOn
14 J. Chen, M. A. Hamon, H. Hu, A. M. Rao, P. C. Eklund, and R. C. Haddon, 'Solution properties of single-walled carbon nanotubes', Science, Vol. 282, p. 95, 1998   DOI   ScienceOn
15 C. A. Grimes, E. C. Dicky, C. Mungle, K. G. Ong, and D. J. Qian, 'Effect of purification of the electrical conductivity and complex permittivity of multiwall carbon nanotubes', J. Appl. Phys., Vol. 90, p. 4134, 2001   DOI   ScienceOn
16 A. Thess, R. Lee, P. Nikolaev, H. Dai, D. Tomanek, and R. E. Smalley, 'Crystalline ropes of metallic carbon nanotubes', Science, Vol. 273, p. 483, 1996   DOI   ScienceOn
17 C. Journet, W. K. Maser, P. Bernier, A. Loiseau, R. Lee, and J. E. Fischer, 'Large-scale production of single-walled carbon nanotubes by the electric-arc technique', Nature, Vol. 388, p. 756, 1997   DOI   ScienceOn
18 M. T. Martinez, M. A. Callejas A. M. Benito, J. Scheriber, O. Chauvet, and J. L. G. Fierro, 'Microwave single walled carbon nanotubes purification', Chem. Commun., Vol. 9, p. 1000, 2002
19 M. T. Martinez, M. A. Callejas, A. M. Benito, C. Marhic, O. Chauvet, and Maser W. K., 'Modifications of single-wall carbon nanotubes upon oxidative purification treatments', Nanotechnology, Vol. 14, p. 691, 2003   DOI   ScienceOn
20 E. Gregan E, S. M. Keogh, A. Mahuire, L. O. Neill, G. Chambers, and H. J. Byrne, 'Purification and isolation of SWNTs', Carbon, Vol. 41, p. 1031, 2004