Quantitative study on the interaction of Ag+ and Pd2Â + with CNT-graft-PCA (polycitric acid) in aqueous solution

► Trapping mechanism of Ag and Pd nanoparticles ► Charge transfer between the ligand and metal ions ► The peak at 350 nm is related to the formation of silver nanoparticle [17]. ► Enhancement of the intensity of absorption bands ► Increase of encapsulated Ag nanoparticles in the polymer host