Plasma Induced Grafting Multiwalled Carbon Nanotube with Chitosan and Its Application for Removal of UO_2~(2+), Cu~(2+), and Pb~(2+) from Aqueous Solutions

摘要

Multiwalled carbon nanotubes (MWCNTs) have attracted multidisciplinary interest because of their special physicochemical properties. Herein, chitosan (CS) was grafted onto the surfaces of MWCNTs by using plasma technique. The CS grafted MWCNTs (MWCNT-g-CS) were charac terized by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, powder X-ray diffraction (XRD), UV-Vis spectrophotometry, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) in detail. The prepared MWCNT-g-CS were used to remove UO_2~(2+), Cu~(2+), and Pb~(2+) ions from large volumes of aqueous solutions under ambi ent conditions, and the results showed that MWCNT-g-CS has much higher adsorption capacity than MWCNTs in the removal of heavy metal ions. MWCNT-g-CS are suit able materials in the preconcentration and solidification of heavy metal ions from large volumes of aqueous solutions.