High degree of N-functionalization in macroscopically assembled carbon nanotubes

Abstract Nitrogen doping of carbon nanomaterials has emerged as a method to develop novel material properties, though limitations in the form extended treatment times, harsh chemical usage and limited total nitrogen content exist. Here, macroscopic ribbon-like assemblies nanotubes are functionalized with using simple direct current-based plasma–liquid system. This system utilizes plasma-generated species an ethanol:water solution ethylenediamine precursor for functionalization nanotube assembly. These unique, pathways enable rapid high levels atomic concentration reaching 22.5%, amine groups, pyrrolic groups graphitic observed X-ray photoelectron spectra, highest ever achieved. is demonstrated be significantly higher than comparative electrolysis process. demonstrates that this plasma process enhances availability from precursor, facilitating greater functionalization. Graphical abstract