Removing lead from water with carboxylate dendrimers and magnetic nanoparticles modified with carboxylate dendrimers

Contamination of water with heavy metals as lead (Pb2+) is a relevant problematic issue. In this work, we have tested diferent types of dendritic materials for lead removal from water and further recovery. The systems employed are magnetic nanoparticles (MNP) modifed with monocarboxylate and dendritic carboxylate ligands, and they are compared to pristine MNP and carbosilane dendrimers. They are all efective at removing Pb2+, but the key variations are in their recyclability. The usage of a fltering membrane was required for dendrimers, which was signifcantly degraded by the acidic media. In terms of MNP, those that were covered by dendritic molecules were clearly less damaged in acidic media. Finally, isotherm analysis revealed that Pb2+ interacts diferently with unmodifed and modifed MNP.Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER¿BBN)Ministerio de Ciencia e InnovaciónComunidad de MadridUniversidad de Alcal