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Effect of acid oxidation on the dispersion property of multiwalled carbon nanotubes

Goh, P. S. and Ismail, A. F. and Aziz, M. and Rusop, Mohamad and Soga, Tetsuo (2009) Effect of acid oxidation on the dispersion property of multiwalled carbon nanotubes. In: AIP Conference Proceedings. American Institute of Physics, USA, pp. 224-228. ISBN 978-073540673-5

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Official URL: http://dx.doi.org/10.1063/1.3160136

Abstract

A means of dispersion of multiwalled carbon nanotube (MWCNT) via mixed acid (HNO3 and H2SO4) oxidation with different treatment durations was investigated through the solubility study of the treated carbon nanotubes in some common solvents. Fourier transformed infrared (FTIR) characterization of the reaction products revealed that the surface of MWCNTs was successfully functionalized with surface acidic groups. The acid-base titration demonstrated that the amount of surface acidic groups increased in parallel with the refluxing duration. The acid modified MWCNTs were found to be well dispersed in polar solvents, such as ethanol and water due to the presence of the hydrophilic acid functional groups on the surface of raw MWCNTs. Such chemical modification of carbon nanotube properties will pave the way towards the realistic applications in the nanotechnology world.

Item Type:Book Section
Additional Information:International Conference on Nanoscience and Nanotechnology, Nano-SciTech 2008; Selangor; 18 November 2008 through 21 November 2008; ISSN : 0094243X
Uncontrolled Keywords:acid oxidation, functionalization, multiwalled carbon nanotubes
Subjects:Q Science > QC Physics
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:13535
Deposited By: Ms Zalinda Shuratman
Deposited On:09 Aug 2011 01:22
Last Modified:09 Aug 2011 01:22

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