Separation and purification of functionalised water-soluble multi-walled carbon nanotubes by flow field-flow fractionation

Production of highly electro-conductive cellulosic paper via surface coating of carbon nanotube/graphene oxide nanocomposites using nanocrystalline cellulose as a binder

“…To overcome this limitation, numerous efforts have been directed toward the surface engineering of CNTs for enhanced aqueous dispersion via covalent (Tagmatarchis et al 2005) or non-covalent approach (Lee et al 2007). As a matter of fact, surface modification can impair their inherently unique properties, thus affecting the end-use performance, although the aqueous dispersion was greatly improved (Zhang et al 2010).…”

Characterization of carbon nanotubes and analytical methods for their determination in environmental and biological samples: A review

“…Since the first application of FFF for the separation of carbon nanotubes by length [128], several other applications involving different modifications of this technique have been reported. Chen and Selegue [137] showed the utility of this technique in the separation oxidatively shortened SWCNTs and MWCNTs on the basis of length; Moon et al [138] demonstrated the separation of nanotubes into fractions of similar size and verified the high - [139] dependence of the FFF separation on the nature of the carrier flow; Tagmatarchis et al [139] confirmed the utility of this technique for MWCNT separation and these authors also proved the possibility of separating nanotubes from other nanosized particulate matter, which is not retained under appropriate FFF conditions. Ultracentrifugation (with and without density gradient solution) was also used for nanotube separation and characterization.…”

Single walled carbon nanotube length determination by asymmetrical-flow field-flow fractionation hyphenated to multi-angle laser-light scattering

“…However, the exclusion limit of the SEC column, controlled by the pore size, restricts the SWCNT that can be separated to those shorter than 1 m. Doorn et al [7] showed that CE can be used to separate SWCNT according to their length but the size resolution remains low and the quantity separated small by comparison with SEC. CNT FFF-based fractionation is reported in aqueous dispersions [8][9][10][11][12]. Some of these studies refer to SWCNT separation by flow fieldflow fractionation (FlFFF) [8,9].…”