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Issue 2, 2006
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Purification strategies and purity visualization techniques for single-walled carbon nanotubes

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Abstract

Traditionally, SWNTs have been prepared by electric arc-discharge, laser ablation, or chemical vapor deposition (CVD) methods, yielding tubes of various diameter and length distributions. However, without exception, as-prepared SWNTs are contaminated with a number of impurities, decreasing the overall yield of usable material. Impurities include transition metal catalysts, such as Fe, Co, and Ni, which are necessary for the growth of SWNTs as well as carbonaceous species such as amorphous carbon, fullerenes, multishell carbon nanocapsules, and nanocrystalline graphite. In this Feature Article, we highlight the role of microscopy in designing and facilitating the interpretation of the success of strategies, including (a) oxidative methods including liquid and gas phase oxidation, (b) chemical functionalization protocols, (c) filtration and chromatography techniques, and (d) microwave heating methods, aimed at rationally purifying single-walled carbon nanotubes.

Graphical abstract: Purification strategies and purity visualization techniques for single-walled carbon nanotubes

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Publication details

The article was received on 12 Apr 2005, accepted on 02 Aug 2005 and first published on 30 Aug 2005


Article type: Feature Article
DOI: 10.1039/B510858F
Citation: J. Mater. Chem., 2006,16, 141-154
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    Purification strategies and purity visualization techniques for single-walled carbon nanotubes

    T. Park, S. Banerjee, T. Hemraj-Benny and S. S. Wong, J. Mater. Chem., 2006, 16, 141
    DOI: 10.1039/B510858F

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