Multi-wall Carbon Nanotubes Decorated with Barium Oxide Nanoparticles

Abstract

A simple, reproducible and efficient technique to decorate multi-wall carbon nanotubes (MWCNTs) with barium oxide nanoparticles (BaO NPs) using infrared (IR) irradiation is developed. NaOH treatment leads to the purification of MWCNTs (p-MWCNTs). Functionalizing p-MWCNTs with tricarboxylic aryl diazonium salts generated in-situ and then reacting it with barium acetate in the presence of IR irradiation is the key step in efficiently impregnating p-MWCNTs-D3 with barium acetate (p-MWCNTs-D3/BA). Materials are characterized using XPS, TEM and PXRD. Homogeneous distribution of BaO NPs on MWCNTs is evidenced, with a Gaussian mean diameter of 5.1 nm. This method is also applicable to large scale preparation which opens interesting perspectives for nanotechnology applications.