Separation of single-walled carbon nanotubes using aqueous two-phase system
The separation of metallic single-walled carbon nanotubes (M-SWCNTs) from semiconducting single-walled carbon nanotubes (S-SWCNTs) in as-received SWCNTs is an important step to integrate carbon nanotubes into electronic applications. In this study, the effect of molecular weight (Mw) of polyethylene...
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| Format: | Article |
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Elsevier
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/35351/ |
| _version_ | 1848848030238769152 |
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| author | Tang, Malcolm S. Y. Show, Pau Loke Yu, Kiat Lin Woon, Kai Lin Tan, Chin Ping Ling, Tau Chuan |
| author_facet | Tang, Malcolm S. Y. Show, Pau Loke Yu, Kiat Lin Woon, Kai Lin Tan, Chin Ping Ling, Tau Chuan |
| author_sort | Tang, Malcolm S. Y. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The separation of metallic single-walled carbon nanotubes (M-SWCNTs) from semiconducting single-walled carbon nanotubes (S-SWCNTs) in as-received SWCNTs is an important step to integrate carbon nanotubes into electronic applications. In this study, the effect of molecular weight (Mw) of polyethylene glycol (PEG) on the separation of M-SWCNTs from as-received SWCNTs using aqueous two-phase system (ATPS) consist of PEG, dextran, organic solvent N-methylpyrrolidone (NMP) and water has been investigated. PEG with Mw 6000 and 10,000 showed higher partition coefficient (K) and yield (Y). The semiconducting single-walled carbon nanotube (S-SWCNT) was attracted to the bottom phase. Varying the concentration of PEG 6000 and dextran could enrich the purity of M-SWCNT in the top phase to 0.2574 compared to the pristine value of 0.1506. The volume ratio (VR) that gave the highest enrichment of M-SWCNT is found to be 1.5. However, there was no significant changes in purification factor (PF) and purity when the concentration of NMP and water were manipulated. This finding provides a solid foundation for the studies of ATPS to separate different species of SWCNTs. |
| first_indexed | 2025-11-15T09:28:01Z |
| format | Article |
| id | upm-35351 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T09:28:01Z |
| publishDate | 2014 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-353512016-02-18T06:40:18Z http://psasir.upm.edu.my/id/eprint/35351/ Separation of single-walled carbon nanotubes using aqueous two-phase system Tang, Malcolm S. Y. Show, Pau Loke Yu, Kiat Lin Woon, Kai Lin Tan, Chin Ping Ling, Tau Chuan The separation of metallic single-walled carbon nanotubes (M-SWCNTs) from semiconducting single-walled carbon nanotubes (S-SWCNTs) in as-received SWCNTs is an important step to integrate carbon nanotubes into electronic applications. In this study, the effect of molecular weight (Mw) of polyethylene glycol (PEG) on the separation of M-SWCNTs from as-received SWCNTs using aqueous two-phase system (ATPS) consist of PEG, dextran, organic solvent N-methylpyrrolidone (NMP) and water has been investigated. PEG with Mw 6000 and 10,000 showed higher partition coefficient (K) and yield (Y). The semiconducting single-walled carbon nanotube (S-SWCNT) was attracted to the bottom phase. Varying the concentration of PEG 6000 and dextran could enrich the purity of M-SWCNT in the top phase to 0.2574 compared to the pristine value of 0.1506. The volume ratio (VR) that gave the highest enrichment of M-SWCNT is found to be 1.5. However, there was no significant changes in purification factor (PF) and purity when the concentration of NMP and water were manipulated. This finding provides a solid foundation for the studies of ATPS to separate different species of SWCNTs. Elsevier 2014-04-07 Article PeerReviewed Tang, Malcolm S. Y. and Show, Pau Loke and Yu, Kiat Lin and Woon, Kai Lin and Tan, Chin Ping and Ling, Tau Chuan (2014) Separation of single-walled carbon nanotubes using aqueous two-phase system. Separation and Purification Technology, 125. pp. 136-141. ISSN 1383-5866; ESSN: 1873-3794 http://www.sciencedirect.com/science/article/pii/S138358661400077X 10.1016/j.seppur.2014.01.044 |
| spellingShingle | Tang, Malcolm S. Y. Show, Pau Loke Yu, Kiat Lin Woon, Kai Lin Tan, Chin Ping Ling, Tau Chuan Separation of single-walled carbon nanotubes using aqueous two-phase system |
| title | Separation of single-walled carbon nanotubes using aqueous two-phase system |
| title_full | Separation of single-walled carbon nanotubes using aqueous two-phase system |
| title_fullStr | Separation of single-walled carbon nanotubes using aqueous two-phase system |
| title_full_unstemmed | Separation of single-walled carbon nanotubes using aqueous two-phase system |
| title_short | Separation of single-walled carbon nanotubes using aqueous two-phase system |
| title_sort | separation of single-walled carbon nanotubes using aqueous two-phase system |
| url | http://psasir.upm.edu.my/id/eprint/35351/ http://psasir.upm.edu.my/id/eprint/35351/ http://psasir.upm.edu.my/id/eprint/35351/ |