Self-Assembled Fe III -TAML-Based Magnetic Nanostructures for Rapid and Sustainable Destruction of Bisphenol A

This study focused on constructing iron(III)-tetraamidomacrocyclic ligand (Fe III -TAML)-based magnetic nanostructures via a surfactant-assisted self-assembly (SAS) method to enhance the reactivity and recoverability of Fe III -TAML activators, which have been widely employed to degrade various organic contaminants. We have fabricated Fe III -TAML-based magnetic nanomaterials (Fe III -TAML/CTAB@Fe 3 O 4 , CTAB refers to cetyltrimethylammonium bromide) by adding a mixed solution of Fe III -TAML and NH 3 ·H 2 O into another mixture containing CTAB, FeCl 2 and FeCl 3 solutions. The as-prepared Fe III -TAML/CTAB@Fe 3 O 4 nanocomposite showed relative reactivity compared with free Fe III -TAML as indicated by decomposition of bisphenol A (BPA). Moreover, our results demonstrated that the Fe III -TAML/CTAB@Fe 3 O 4 composite can be separated directly from reaction solutions by magnet adsorption and reused for at least four times. Therefore, the efficiency and recyclability of self-assembled Fe III -TAML/CTAB@Fe 3 O 4 nanostructures will enable the application of Fe III -TAML-based materials with a lowered expense for environmental implication.