Effective purification of single-walled carbon nanotubes with reversible noncovalent functionalization

Fushen Lu, Xin Wang, Mohammed Meziani, Li Cao, Leilei Tian, Matthew Bloodgood, Jackie Robinson, Ya-Ping Sun

Research output: Contribution to journalArticleAcademicpeer-review

23 Citations (Scopus)


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 languageEnglish
Pages (from-to)7561-7564
Issue number10
Publication statusPublished - May 2010
Externally publishedYes


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