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Updated: Feb 5, 2026

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
Published on: February 2, 2012
Release of Retained Single-Walled Carbon Nanotubes in Gels
Lili Zhou1, Xiaofeng Liu1, Huaping Li1
1Atom Optoelectronics , 440 Hindry Avenue, Unit E , Inglewood , California 90301 , United States.
Abstract:
The separation of single-chirality, even-enantiomeric single-walled carbon nanotubes (SWCNTs) has been well established using gel permeation chromatography. Successful SWCNTs separation has been considered to be the selective adsorption and desorption of specific SWCNTs on the porous sites of Sephacryl gels. This work reports two nonspecific releases of SWCNTs retained on Sephacryl gels: (1) a considerable number of SWCNTs were eluted using a low-concentration SDS condition solution (0.5 wt %) from the gels exclusively eluted with a high-concentration SDS eluting solution (5 wt %) after being stocked overnight and (2) the retained SWCNTs in Sephacryl gels can be eluted using a low-concentration SDS condition solution (0.5 wt %) after being stocked overnight without any treatments. Inspired by extracellular matrix systems, these releases are attributed to the strain-induced gel relaxation. The roles of surfactants, especially SDS, in the retention and release of SWCNTs on Sephacryl gels were discussed on the basis of spectral dilution and titration experiments using single-chirality (6,5) SWCNT as the probe.
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