Abstract
An effective purification method for single-walled carbon nanotubes (SWNTs) based on a combination of oxidative acid treatment and reversible noncovalent functionalization with 1-pyreneacetic acid is reported. The functionalization was selective toward the nanotubes, allowing a nearly complete removal of residual metal catalysts and carbonaceous impurities. The resulting highly pure SWNTs remained solvent-dispersible, a valuable feature to potential applications that require solvent-based processing. The functionalization agent could be recovered quantitatively and reused. Effects of the purification process on the composition and properties of the nanotube sample were evaluated.
Original language | English |
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Pages (from-to) | 7561-7564 |
Journal | Langmuir |
Volume | 26 |
Issue number | 10 |
DOIs | |
Publication status | Published - May 2010 |
Externally published | Yes |