Pore structure of raw and purified HiPco single-walled carbon nanotubes
Pore structure of raw and purified HiPco single-walled carbon nanotubes
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DOI：
10.1016/s0009-2614(02)01420-3
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发表时间：
2002-10-28
影响因子：
2.8
通讯作者：
Meyyappan, M
中科院分区：
文献类型：
--
作者：
Cinke, M;Li, J;Meyyappan, M
通过两步纯化工艺从含Fe颗粒的HiPco单壁碳纳米管样品中获得了非常高纯度的单壁碳纳米管。使用高分辨率透射电子显微镜（HRTEM），拉曼光谱和热重分析（TGA）的原始和纯化的样品进行了表征。提纯后的样品含铁量约为0.4%，而且该工艺似乎没有引入任何额外的缺陷。在77 K下的N-2吸附等温线研究表明，纯化样品的总表面积从原材料的567 m2/g增加到1587 m2/g，这是报道的单壁碳纳米管的最高值。(C)2002 Elsevier Science B. V.保留所有权利。
Very high purity single-walled carbon nanotubes (SWNTs) were obtained from HiPco SWNT samples containing Fe particles by a two-step purification process. The raw and purified samples were characterized using high resolution transmission electron microscopy (HRTEM), Raman spectroscopy and thermogravimetric analysis (TGA). The purified sample consists of similar to0.4% Fe and the process does not seem to introduce any additional defects. The N-2 adsorption isotherm studies at 77 K reveal that the total surface area of the purified sample increases to 1587 m(2)/g from 567 m(2)/g for the raw material, which is the highest value reported for SWNTs. (C) 2002 Elsevier Science B.V. All rights reserved.