The separation single-wall carbon nanotubes on length by sepharose gel  

作　　者：REN LingLing ZHAO MingYuan WANG ZhiHua 

机构地区：[1]National Institute ofMetrology, Beijing 100013, China [2]Department of Applied Chemistry, Beijing University of Chemical Technology Beijing 100013, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2012年第7期1178-1182,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Science & Technology Pillar Program of MOST (Grant No. 2011BAK15B04)

摘　　要：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.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 char- acterize 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 deoxy- cholate. 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.

关 键 词：single-wall carbon nanotubes LENGTH SEPARATION sepharose gel sodium dodecyl sulfate sodium deoxycholate 

分 类 号：O647.2[理学—物理化学] TB383[理学—化学]