Redox-Active Magnetic Composites for Anionic Contaminant Removal from Water

Kai Jher Tan, Satoshi Morikawa, Katherine R. Phillips, Nil Ozbek, T. Alan Hatton*

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkıMakalebilirkişi

17 Atıf (Scopus)

Özet

Global water security is jeopardized by the presence of anthropogenic contaminants, which can persist resiliently in the environment and adversely affect human health. Surface adsorption of polluting species is an effective technique for water purification. In this work, redox-active magnetic compounds were designed for the targeted removal of inorganic and organic anions in water via polymeric redox-active vinylferrocene (VFc) and pyrrole (Py) moieties. An Fe3O4@SiO2@PPy@P(VFc-co-HEMA) composite was prepared in a four-step process, with the outermost layer possessing heightened hydrophilicity as a result of the optimized incorporation of 2-hydroxyethylmethacrylate (HEMA) monomers into the backbone of the ferrocene macromolecule. The synthesized materials are able to separate carcinogenic hexavalent chromium oxyanions and other charged micropollutants, and exhibit a 2-fold or greater enhancement in adsorption uptake once the redox-active ferrocene groups are oxidized to ferrocenium cations, with capacities of 23, 49, 66, and 95 mg/g VFc for maleic acid, 2-(6-methoxy-2-naphthyl)propionic acid (Naproxen), (2,4-dichlorophenoxy)acetic acid (2,4-D), and (2-dodecylbenzene)sulfonic acid (DBS), respectively, and a > 99% extractability of chromium in the 1 ppm range. The application of redox-active components to a magnetic particulate scaffold improves maneuverability and phase contact, giving rise to new potential aqueous separation process frameworks for water or product purification.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)8974-8983
Sayfa sayısı10
DergiACS applied materials & interfaces
Hacim14
Basın numarası7
DOI'lar
Yayın durumuYayınlandı - 23 Şub 2022
Harici olarak yayınlandıEvet

Bibliyografik not

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

Parmak izi

Redox-Active Magnetic Composites for Anionic Contaminant Removal from Water' araştırma başlıklarına git. Birlikte benzersiz bir parmak izi oluştururlar.

Alıntı Yap