Efficient separation of semiconducting single-wall carbon nanotubes by surfactant-composition gradient in gel filtration

• Boanerges Thendie

• Haruka Omachi

• Yasumitsu Miyata

• Hisanori Shinohara

Abstract

Gel filtration is a powerful method of separating and purifying semiconducting single-wall carbon nanotubes (s-SWCNTs) from their metallic (m-) counterpart. However, a small amount of m-SWCNTs usually remains, thus reducing the purity of the s-SWCNTs obtained. We have investigated the effect of elution with a gradient concentration of the surfactant on the separation and purity of s-SWCNTs. By utilizing the controlled low-gradient elution (CLGE) that we have developed, the purity of s-SWCNTs is improved to 94% from the 90% obtained with the conventional separation. Furthermore, CLGE simultaneously allows diameter-based separation of small-diameter s-SWCNTs, which indicates a promising utilization of CLGE for s-SWCNT separation.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 56 (1), 015101-, 2016-11-28

  IOP Publishing

Keywords

• General Physics and Astronomy
• General Engineering

Details

• CRID: 1360003449890870912
• NII Article ID: 210000147341
• DOI: 10.7567/jjap.56.015101
• ISSN: 13474065
• ISSN: 00214922
• Web Site: http://stacks.iop.org/1347-4065/56/i=1/a=015101/pdf
• Web Site: http://stacks.iop.org/1347-4065/56/i=1/a=015101?key=crossref.46e24ef539bbee9d71e24839261a775a
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.56.015101
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.56.015101/pdf
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