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Preparation of dicyandiamide modified polystyrene resin beads decorated with nano‐Fe 3 O 4 for removing Hg(II) from aqueous solution
Author(s) -
Ma YingXia,
Xing Dan,
Lu CuiPing,
Du XueYan,
La PeiQing
Publication year - 2018
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24187
Subject(s) - materials science , adsorption , polystyrene , aqueous solution , x ray photoelectron spectroscopy , fourier transform infrared spectroscopy , freundlich equation , nuclear chemistry , superparamagnetism , desorption , chemical engineering , analytical chemistry (journal) , composite material , chromatography , chemistry , magnetization , organic chemistry , polymer , physics , quantum mechanics , magnetic field , engineering
In this study, dicyandiamide (DCDA) modified polystyrene (PS) resin beads decorated with nano‐Fe 3 O 4 (Fe 3 O 4 ‐PS‐DCDA hybrids) were prepared by co‐precipitation method. The Fe 3 O 4 ‐PS‐DCDA hybrids were characterized by scanning electron microscopy (SEM), Fourier transform‐infrared (FT‐IR) spectroscopy, X‐ray diffraction (XRD) spectroscopy, X‐ray photoelectron spectroscopy (XPS), nitrogen adsorption/desorption isotherms, and vibrating sample magnetometer (VSM). Meanwhile, the adsorption property of Fe 3 O 4 ‐PS‐DCDA hybrids for Hg(II) in aqueous solution was investigated by batch methods. The results show that the nano‐Fe 3 O 4 decorated on the outer surface and interior of DCDA modified PS resin beads (PS‐DCDA) is nanoparticles and nanorods, respectively. The saturation magnetization ( M s ) of the Fe 3 O 4 ‐PS‐DCDA hybrids is 0.70 emu/g, which is enough to ensure the convenient magnetic separation. The adsorption kinetics of the hybrids for Hg(II) accorded with the pseudo‐second‐order model and the adsorption isotherms followed the Freundlich equation. POLYM. COMPOS., 39:2232–2240, 2018. © 2016 Society of Plastics Engineers