Journal
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Volume 246, Issue 11-12, Pages 2477-2481Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.200982289
Keywords
-
Categories
Funding
- RFBR [07-02-01505, 09-02-91076, 09-02-01051, FP6-033350]
Ask authors/readers for more resources
A density gradient ultracentrifugation (DGU) technique recently applied for separation of single-wall carbon nanotubes (SWNTs) over diameter also appeared to be efficient for the nanotube separation according to their electronic structure. In this work we used DGU for extraction of a highly metallic (>97 wt%) nanotube fraction from a raw soot of arc-discharge SWNTs. The process parameters (the surfactant type and concentration, the treatment time, the approach to the gradient formation) have been optimized. A variation of surfactant concentration allowed obtaining the highly metallic nanotube fractions with different dominant diameter distribution resulting in the blue or green top fractions. Sodium taurodeoxycholate (TDOC) was efficiently used for DGU separation of raw, non-purified SWNTs. The fractions have been studied with the UV-Vis-NIR absorption and Raman spectroscopy. [GRAPHICS] Photograph of the SWNT solution after DGU. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available