Surfactant free fractions of metallic and semiconducting single-walled carbon nanotubes via optimised gel chromatography |
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| Authors: | Pawel Lukaszczuk Mark H. Rümmeli Martin Knupfer Ryszard J. Kalenczuk Ewa Borowiak-Palen |
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| Affiliation: | 1. West Pomeranian University of Technology, Institute of Chemical and Environment Engineering, ul. Pu?askiego 10, 70-322 Szczecin, Poland;2. Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069 Dresden, Germany;1. IFW Dresden, Institute for Metallic Materials, Helmholtzstr. 20, 01069 Dresden, Germany;2. Dep. Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 - S3, 9000 Gent, Belgium;1. Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Germany;2. Bruker EAS GmbH, Hanau, Germany |
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| Abstract: | 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 ～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. |
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