Physical functionalization of multi-walled carbon nanotubes for enhanced dispersibility in aqueous medium
Mohamed Youssry, Maisa Al-Ruwaidhi, Mahdiyeh Zakeri, Mohadese Zakeri
Abstract
Abstract Noncovalent functionalization of multi-walled carbon nanotubes (MWCNTs) by anionic surfactants (sodium dodecylbenzene sulfonate; SDBS and sodium cholate; SC) results in stable aqueous dispersions. SDBS showed better dispersing efficiency at lower concentration than that of SC due to the stabilizing π-π stacking induced by the presence of benzene ring in the tail of SBDS. The hemimicelle formation on the surface of nanotubes is likely to be the dominant dispersion mechanism that imparts higher colloidal stability for the MWCNTs in aqueous medium.
Topics & Concepts
DodecylbenzeneSurface modificationCarbon nanotubeAqueous solutionChemical engineeringMaterials scienceColloidStackingDispersion (optics)DispersantSulfonateChemistrySodiumOrganic chemistryNanotechnologyEngineeringPhysicsOpticsCarbon Nanotubes in CompositesNanopore and Nanochannel Transport StudiesForce Microscopy Techniques and Applications