Surfactant free fractions of metallic and semiconducting single-walled carbon nanotubes via optimised gel chromatography
Surfactant free fractions of metallic and semiconducting single-walled carbon nanotubes via optimised gel chromatography
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DOI：
10.1016/j.materresbull.2011.12.021
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发表时间：
2012-03-01
影响因子：
5.4
通讯作者：
Borowiak-Palen, Ewa
中科院分区：
文献类型：
--
作者：
Lukaszczuk, Pawel;Ruemmeli, Mark H.;Borowiak-Palen, Ewa
本文报道了用十二烷基硫酸钠（SDS）和脱氧胆酸钠（DOC）溶液作为洗脱剂，用电子型色谱柱对碳纳米管进行分选/纯化的过程。在工艺中检测了不同浓度的非商业琼脂糖凝胶。发现在最佳凝胶浓度下，分级导致类似于96.2%的半导体物种产率。重要的是，为了得到无表面活性剂的级分，进行了分离后纯化程序。利用紫外-可见-近红外光谱和拉曼光谱对样品进行了分析。高分辨率透射显微镜和热重分析允许研究样品的形态和纯度，分别。(C)2012爱思唯尔有限公司版权所有。
We report the procedure of sorting/purification of carbon nanotubes by electronic type using chromatographic column with sodium dodecylsulfate (SDS) and sodium deoxycholate (DOC) solutions as the eluents. The non-commercial agarose gel in different concentrations has been tested in the process. It was found that in optimal gel concentration the fractionation resulted in similar to 96.2% yield of semiconducting species. Importantly, to get surfactant-free fractions the post-separation purification procedure has been carried out. The UV-vis-NIR and Raman spectroscopy have been utilised for the samples analysis. High resolution transmission microscopy and thermogravimetric analysis allowed to study the sample morphology and purity, respectively. (C) 2012 Elsevier Ltd. All rights reserved.