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Magnetically assisted removal and separation of cationic dyes from aqueous solution by magnetic nanocomposite hydrogels
Author(s) -
Li Shengfang,
Liu Xianli,
Huang Weidong,
Li Wen,
Xia Xianyou,
Yan Shilin,
Yu Jianying
Publication year - 2011
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1782
Subject(s) - self healing hydrogels , cationic polymerization , nanocomposite , materials science , aqueous solution , adsorption , freundlich equation , chemical engineering , crystal violet , polymer chemistry , copolymer , nuclear chemistry , composite material , chemistry , organic chemistry , polymer , medicine , pathology , engineering
Magnetic poly(acrylic acid‐acrylamide‐butyl methacrylate) (P(AAB)) nanocomposite hydrogels were prepared and used as adsorbents for removal and separation of cationic dyes from aqueous solution. These magnetic P(AAB) nanocomposite hydrogels were characterized by scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM). It was found that these magnetic P(AAB) nanocomposite hydrogels had magnetic responsive characters. The dynamic swelling, removal, and separation of cationic dye, crystal violet (CV), and basic magenta (BM) by these magnetic nanocomposite hydrogels were studied. The adsorption capacity and isotherm studies of cationic dyes onto magnetic P(AAB) nanocomposite hydrogels have been evaluated. The magnetic P(AAB) nanocomposite hydrogels containing Fe 3 O 4 particles can be easily manipulated in magnetic field for removal and separation of cationic dyes from aqueous solution. Adsorption process agreed very well with the Langmuir and Freundlich models. Copyright © 2010 John Wiley & Sons, Ltd.