Separation of surfactant functionalized single-walled carbon nanotubes via free solution electrophoresis method

• Autorzy: Blazej Scheibe , Mark Rümmeli , Ewa Borowiak-Palen , Ryszard Kalenczuk
• Języki publikacji: EN

Abstrakty

EN

This work presents the application of the free solution electrophoresis method (FSE) in the metallic / semiconductive (M/S) separation process of the surfactant functionalized single-walled carbon nanotubes (SWCNTs). The SWCNTs synthesized via laser ablation were purified through high vacuum annealing and subsequent refluxing processes in aqua regia solution. The purified and annealed material was divided into six batches. First three batches were dispersed in anionic surfactants: sodium dodecyl sulfate (SDS), sodium cholate (SC) and sodium deoxycholate (DOC). The next three batches were dispersed in cationic surfactants: cetrimonium bromide (CTAB), benzalkonium chloride (BKC) and cetylpyridinium chloride (CPC). All the prepared SWCNTs samples were subjected to FSE separation process. The fractionated samples were recovered from control and electrode areas and annealed in order to remove the adsorbed surfactants on carbon nanotubes (CNTs) surface. The changes of the van Hove singularities (vHS) present in SWCNTs spectra were investigated via UV-Vis-NIR optical absorption spectroscopy (OAS).

Słowa kluczowe

EN

SWCNTs; surfactants; separation; electrophoresis

• Czasopismo: Open Physics
• Rocznik: 2011
• Tom: 9
• Numer: 2
• Strony: 325-329

Daty

wydano

2011-04-01

online

2011-02-20

Twórcy

autor

Blazej Scheibe

• Institute of Chemical and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322, Szczecin, Poland

autor

Mark Rümmeli

• Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstr. 20, 01069, Dresden, Germany

autor

Ewa Borowiak-Palen

• Institute of Chemical and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322, Szczecin, Poland,

autor

Ryszard Kalenczuk

• Institute of Chemical and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322, Szczecin, Poland

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Identyfikatory

DOI

10.2478/s11534-010-0083-z