Characterization of single-wall carbon nanotubes by N2 adsorption
Characterization of single-wall carbon nanotubes by N2 adsorption
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DOI：
10.1016/j.carbon.2004.02.025
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发表时间：
2004-01-01
期刊：
影响因子：
10.9
通讯作者：
Wei, F
中科院分区：
文献类型：
--
作者：
Li, FX;Wang, Y;Wei, F
N-2吸附等温线在77 K的单壁碳纳米管（SWNTs），多壁碳纳米管（MWNTs），以及这些碳纳米管（CNT）的混合物进行了分析，其孔径分布（PSD）的差异。的PSD，计算在微孔区域的Horvath-Kawazoc方法和在介孔区域的BJH方法，是在协议的高分辨率透射电子显微镜推导出的两种类型的碳纳米管的结构。一个特征峰的微孔区域中的单壁碳纳米管的PSD是不存在的多壁碳纳米管和杂质，如无定形碳，金属残留物的催化剂等的PSD中提出的评价此峰作为一个方便的工具的定量表征单壁碳纳米管的纯度在含碳纳米管的样品。(C)2004爱思唯尔有限公司保留所有权利。
N-2 adsorption isotherms at 77 K of single-wall carbon nanotubes (SWNTs), multi-wall carbon nanotubes (MWNTs), and mixtures of these carbon nanotubes (CNTs) were analyzed for differences in their pore size distributions (PSDs). The PSDs, calculated in the microporous region by the Horvath-Kawazoc method and in the mesoporous region by the BJH method, are in agreement with the structures of both types of CNTs deduced from high-resolution transmission electron microscopy. A characteristic peak in the microporous region in the PSD of SWNTs is not present in the PSDs of MWNTs and impurities such as amorphous carbon, metal residues of catalysts, etc. The evaluation of this peak is proposed as a convenient toot for the quantitative characterization of SWNT purity in carbon nanotube-containing samples. (C) 2004 Elsevier Ltd. All rights reserved.