Dispersion of carbon nanotubes with the aid of surface-active ionic liquids 1-dodecyl-3-methyl-pyrrolidinium bromide

► Homogeneous solution of containing MWCNTs was obtained with the aid of C12MPB. ► Amounts of MWCNTs dispersed in C12MPB aqueous solution appeared a first increase and then decrease process with the increasing concentration of C12MPB. ► This work makes pyrrolidinium ionic liquids contact with CNTs and enrich the application of ILs in dispersing CNTs.