The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System

Here we report our findings on the removal of metallic single-walled carbon nanotubes using an aqueous two-phase system. The aqueous two-phase system contained as received carbon nanotubes, polyethylene glycol, dextran, N-methylpyrrolidone, cetyltrimethylammonium bromide, and water which phase separ...

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Main Authors:	Tang, M.S.Y., Whitcher, T.J., Yeoh, K.H., Chua, C.L., Woon, K.L., Show, P.L., Lin, Y.K., Ling, T.C.
Format:	Article
Published:	American Scientific Publishers 2014
Subjects:	Q Science (General)
Online Access:	http://www.ingentaconnect.com/content/asp/jnn/2014/00000014/00000005/art00017?token=00541da5e1e0c70eca9e1573d257025704423796c244034422c20797c4e75477e4324576b642738bed8c http://www.ingentaconnect.com/content/asp/jnn/2014/00000014/00000005/art00017?token=00541da5e1e0c70eca9e1573d257025704423796c244034422c20797c4e75477e4324576b642738bed8c

id	um-12984
recordtype	eprints
spelling	um-129842015-03-10T06:38:04Z The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System Tang, M.S.Y. Whitcher, T.J. Yeoh, K.H. Chua, C.L. Woon, K.L. Show, P.L. Lin, Y.K. Ling, T.C. Q Science (General) Here we report our findings on the removal of metallic single-walled carbon nanotubes using an aqueous two-phase system. The aqueous two-phase system contained as received carbon nanotubes, polyethylene glycol, dextran, N-methylpyrrolidone, cetyltrimethylammonium bromide, and water which phase separated into top and bottom phases. The top phase was dominated by polyethylene glycol whereas the bottom phase was dominated by dextran. The dextran-rich phase contained more semiconducting species while metallic species was more abundant in the polyethylene glycol rich-phase. It was found via Fourier-Transform Infrared Spectroscopy that cetyltrimethylammonium bromide only present in the dextran-rich phase. A selectivity mechanism is tentatively proposed and discussed. American Scientific Publishers 2014-05 Article PeerReviewed http://www.ingentaconnect.com/content/asp/jnn/2014/00000014/00000005/art00017?token=00541da5e1e0c70eca9e1573d257025704423796c244034422c20797c4e75477e4324576b642738bed8c Tang, M.S.Y.; Whitcher, T.J.; Yeoh, K.H.; Chua, C.L.; Woon, K.L.; Show, P.L.; Lin, Y.K.; Ling, T.C. (2014) The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System. Journal of Nanoscience and Nanotechnology <http://eprints.um.edu.my/view/publication/Journal_of_Nanoscience_and_Nanotechnology.html>, 14 (5). pp. 3398-3402. ISSN 1533-4880 http://eprints.um.edu.my/12984/
repository_type	Digital Repository
institution_category	Local University
institution	University Malaya
building	UM Research Repository
collection	Online Access
topic	Q Science (General)
spellingShingle	Q Science (General) Tang, M.S.Y. Whitcher, T.J. Yeoh, K.H. Chua, C.L. Woon, K.L. Show, P.L. Lin, Y.K. Ling, T.C. The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System
description	Here we report our findings on the removal of metallic single-walled carbon nanotubes using an aqueous two-phase system. The aqueous two-phase system contained as received carbon nanotubes, polyethylene glycol, dextran, N-methylpyrrolidone, cetyltrimethylammonium bromide, and water which phase separated into top and bottom phases. The top phase was dominated by polyethylene glycol whereas the bottom phase was dominated by dextran. The dextran-rich phase contained more semiconducting species while metallic species was more abundant in the polyethylene glycol rich-phase. It was found via Fourier-Transform Infrared Spectroscopy that cetyltrimethylammonium bromide only present in the dextran-rich phase. A selectivity mechanism is tentatively proposed and discussed.
format	Article
author	Tang, M.S.Y. Whitcher, T.J. Yeoh, K.H. Chua, C.L. Woon, K.L. Show, P.L. Lin, Y.K. Ling, T.C.
author_facet	Tang, M.S.Y. Whitcher, T.J. Yeoh, K.H. Chua, C.L. Woon, K.L. Show, P.L. Lin, Y.K. Ling, T.C.
author_sort	Tang, M.S.Y.
title	The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System
title_short	The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System
title_full	The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System
title_fullStr	The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System
title_full_unstemmed	The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System
title_sort	removal of metallic single-walled carbon nanotubes using an aqueous two-phase system
publisher	American Scientific Publishers
publishDate	2014
url	http://www.ingentaconnect.com/content/asp/jnn/2014/00000014/00000005/art00017?token=00541da5e1e0c70eca9e1573d257025704423796c244034422c20797c4e75477e4324576b642738bed8c http://www.ingentaconnect.com/content/asp/jnn/2014/00000014/00000005/art00017?token=00541da5e1e0c70eca9e1573d257025704423796c244034422c20797c4e75477e4324576b642738bed8c
first_indexed	2018-09-06T06:10:32Z
last_indexed	2018-09-06T06:10:32Z
_version_	1610837374939430912

The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System

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