Magnetite nanoparticles modified β-cyclodextrin PolymerCoupled with KMnO4 oxidation for adsorption and degradation of acetaminophen

Here, a porous superparamagnetic composite material magnetic β-cyclodextrin polymer (MNPs/β-CDP) was prepared and characterized as a adsorbent that may be used for the degradaion of acetaminophen (APAP) in aqueous solution by coupling with potassium permanganate (KMnO 4 ) oxidation. The results of adsorption properties investigation showed that the adsorption rate and capacity of MNPs/β-CDP were better than the component materials. When coupled with KMnO 4 oxidation, the degradation efficiency were evaluated with regards to the pseudo-first-order kinetics of 4-CP degradation. As an oxidation reactor, the material effectively alleviated the secondary pollution and water coloration caused by oxidation of KMnO 4 . Moreover, the materials were directly regenerated by the reaction of KMnO 4 with APAP adsorbed in its cavities without additional elution treatment, making it more convenient and environmentally friendly. The repeated degradation experiments demonstrated that MNPs/β-CDP had mechanic stability and reusability. The findings provide novel ideas for the degradation of persistent contaminants in water environments.