Separation of carbon nanotubes into chirally enriched fractions
Abstract
A mixture of single-walled carbon nanotubes ("SWNTs") is separated into fractions of enriched chirality by preparing an aqueous suspension of a mixture of SWNTs and a surfactant, injecting a portion of the suspension on a column of separation medium having a density gradient, and centrifuging the column. In some embodiments, salt is added prior to centrifugation. In other embodiments, the centrifugation is performed at a temperature below room temperature. Fractions separate as colored bands in the column. The diameter of the separated SWNTs decreases with increasing density along the gradient of the column. The colored bands can be withdrawn separately from the column.
- Inventors:
-
- Los Alamos, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1041012
- Patent Number(s):
- 8153014
- Application Number:
- 12/150,813
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03D - FLOTATION
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Doorn, Stephen K, and Niyogi, Sandip. Separation of carbon nanotubes into chirally enriched fractions. United States: N. p., 2012.
Web.
Doorn, Stephen K, & Niyogi, Sandip. Separation of carbon nanotubes into chirally enriched fractions. United States.
Doorn, Stephen K, and Niyogi, Sandip. Tue .
"Separation of carbon nanotubes into chirally enriched fractions". United States. https://www.osti.gov/servlets/purl/1041012.
@article{osti_1041012,
title = {Separation of carbon nanotubes into chirally enriched fractions},
author = {Doorn, Stephen K and Niyogi, Sandip},
abstractNote = {A mixture of single-walled carbon nanotubes ("SWNTs") is separated into fractions of enriched chirality by preparing an aqueous suspension of a mixture of SWNTs and a surfactant, injecting a portion of the suspension on a column of separation medium having a density gradient, and centrifuging the column. In some embodiments, salt is added prior to centrifugation. In other embodiments, the centrifugation is performed at a temperature below room temperature. Fractions separate as colored bands in the column. The diameter of the separated SWNTs decreases with increasing density along the gradient of the column. The colored bands can be withdrawn separately from the column.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 10 00:00:00 EDT 2012},
month = {Tue Apr 10 00:00:00 EDT 2012}
}
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