Isolating single-wall carbon nanohorns as small aggregates through a dispersion method

M. Zhang, M. Yudasaka, Jin Miyawaki, J. Fan, S. Iijima

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

An approach to isolating small aggregates of single-wall carbon nanohorns (SWNHs) is presented. SWNHs are ultrasonically treated in an aqueous solution of surfactant, resulting in dispersion of SWNH aggregates. Subsequent centrifuging enables the separation of small aggregates from larger aggregates or agglomerations and removal of graphitic particles (GG balls), the main impurity. The SWNHs obtained in this way were purified and formed small aggregates, thus exhibiting characteristics superior to those of SWNHs before treatment. We believe that the ability to isolate small SWNH aggregates in an aqueous solution should contribute to their application in the fields of biological sensing and drug delivery systems.

Original languageEnglish
Pages (from-to)22201-22204
Number of pages4
JournalJournal of Physical Chemistry B
Volume109
Issue number47
DOIs
Publication statusPublished - Dec 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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