The separation single-wall carbon nanotubes on length by sepharose gel |
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Authors: | REN LingLing ZHAO MingYuan & WANG ZhiHua National Institute of Metrology Beijing China; |
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Institution: | 2 Department of Applied Chemistry, Beijing University of Chemical Technology, Beijing 100013, China |
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Abstract: | The separations of single-wall carbon nanotubes on length by sepharose gel were investigated in this work. The solutions of sodium dodecyl sulfate and sodium deoxycholate were applied as the eluent in sequence. SEM and Raman were used to characterize the length of nanotube bundles. The results show that the longer nanotubes were eluted out first, and then the shorter tubes were followed by the sodium dodecyl sulfate. However, the separated order was totally reversed by the sodium deoxycholate. By this method, the process generated nanotube fractions not only were narrower in length distributions, but also could control the separation orders by changing the eluents. Moreover, the separation principle was also discussed. |
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Keywords: | single-wall carbon nanotubes length separation sepharose gel sodium dodecyl sulfate sodium deoxycholate |
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