Centre for Nanoscale Science and Technology, School of Chemical and Physical Sciences, Flinders University , 5000, Adelaide, Australia.
ACS Nano. 2014 Jul 22;8(7):6756-64. doi: 10.1021/nn500756a. Epub 2014 Jun 6.
In this report we demonstrate the separation of raw carbon nanotube material into fractions of double-walled (DWCNTs) and single-walled carbon nanotubes (SWCNTs). Our method utilizes size exclusion chromatography with Sephacryl gel S-200 and yielded two distinct fractions of single- and double-walled nanotubes with average diameters of 0.93 ± 0.03 and 1.64 ± 0.15 nm, respectively. The presented technique is easily scalable and offers an alternative to traditional density gradient ultracentrifugation methods. CNT fractions were characterized by atomic force microscopy and Raman and absorption spectroscopy as well as transmission electron microscopy.
在本报告中，我们展示了将原始碳纳米管材料分离成双壁碳纳米管（DWCNTs）和单壁碳纳米管（SWCNTs）的分数。我们的方法利用 Sephacryl 凝胶 S-200 进行尺寸排阻色谱，得到了两个具有平均直径分别为 0.93 ± 0.03nm 和 1.64 ± 0.15nm 的单壁和双壁纳米管的明显分数。所提出的技术易于扩展，并为传统密度梯度超速离心方法提供了替代方法。通过原子力显微镜和拉曼和吸收光谱以及透射电子显微镜对 CNT 分数进行了表征。
