Bioavailability of metallic impurities in carbon nanotubes is greatly enhanced by ultrasonication

Rou Jun Toh, Adriano Ambrosi, Martin Pumera

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Metallic impurities within carbon nanotubes (CNTs) are considered as the main cause of their toxicity. Ultrasonication is a common procedure used to purify and obtain homogeneous dispersions of CNTs as well as to mix them with other components for further processing into composites. Herein, the influence of ultrasonication upon the bioavailability of metallic impurities in CNTs was investigated. We showed that even ultrasonication times as short as 5 min significantly enhanced the bioavailability of metallic impurities, which can therefore interact more actively with biologically important molecules. These findings will have profound impact on the processing of CNTs as well as on nanotoxicity studies.

Original languageEnglish
Pages (from-to)11593-11596
Number of pages4
JournalChemistry - A European Journal
Issue number37
Publication statusPublished - 2012 Sept 10

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry


Dive into the research topics of 'Bioavailability of metallic impurities in carbon nanotubes is greatly enhanced by ultrasonication'. Together they form a unique fingerprint.

Cite this