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Efficient Adsorption of Heavy Metal Ions by A Novel AO‐PAN‐g‐Chitosan/Fe 3 O 4 Composite
Author(s) -
Li Hua,
Zhou FeiXiang,
He BinHong,
Wang GuoXiang,
Xie WanYun,
Liang Enxiang
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202001965
Subject(s) - adsorption , acrylonitrile , chitosan , metal ions in aqueous solution , aqueous solution , desorption , metal , composite number , grafting , nuclear chemistry , ion , infrared spectroscopy , materials science , analytical chemistry (journal) , chemistry , inorganic chemistry , composite material , metallurgy , chromatography , polymer , organic chemistry , copolymer
In this study, a novel amidoxime‐based magnetic adsorbent (AO‐PAN‐g‐Chitosan/Fe 3 O 4 ) was prepared by grafting acrylonitrile onto the surface of chitosan (CS) and magnetic Fe 3 O 4 composite, followed by amidoximation. The magnetic adsorbents were characterized by infrared spectroscopy (FT‐IR) and X‐ray diffraction (XRD). The adsorption properties of the magnetic adsorbents for heavy metal ions in aqueous solutions were investigated under different conditions, including pH, contact time, and initial concentration of heavy metal ions. Under optimum conditions, the maximum Cu(II) and Ni(II) ion adsorption efficiencies were determined to be 38.39 mg/g and 32.68 mg/g by AO‐PAN‐g‐Chitosan/Fe 3 O 4 , respectively. Significantly, the Fe 3 O 4 /AO‐PAN‐g‐CS can be reproduced in a simple way and reused after five adsorption‐desorption cycles without any significant loss in the adsorption capacity.