Tang, M.S.Y. and Whitcher, T.J. and Yeoh, K.H. and Chua, C.L. and Woon, K.L. and Show, P.L. and Lin, Y.K. and Ling, T.C. (2014) The Removal of Metallic Single-Walled Carbon Nanotubes Using an Aqueous Two-Phase System. Journal of Nanoscience and Nanotechnology, 14 (5). pp. 3398-3402. ISSN 1533-4880, DOI https://doi.org/10.1166/jnn.2014.8680.
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Metallic Single-Walled Carbon Nanotubes; Aqueous Two-Phase System |
| Subjects: | Q Science > Q Science (General) |
| Divisions: | Faculty of Science |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 10 Mar 2015 06:38 |
| Last Modified: | 10 Mar 2015 06:38 |
| URI: | http://eprints.um.edu.my/id/eprint/12984 |
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