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Synthesis of superabsorbent hydrogel and manganese dioxide nanowires composite for adsorption of Pb(II) from aqueous solution
Author(s) -
Diao Mengmeng,
Li Qiurong,
Xiao Haiyan,
Wang Jin
Publication year - 2015
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.22999
Subject(s) - adsorption , thermogravimetric analysis , aqueous solution , acrylic acid , materials science , freundlich equation , manganese , composite number , fourier transform infrared spectroscopy , polymer chemistry , chemical engineering , polymerization , nuclear chemistry , composite material , chemistry , organic chemistry , polymer , copolymer , engineering , metallurgy
The superabsorbent composite was prepared by aqueous solution polymerization, using manganese dioxide, acrylic acid, acrylic amide, 2‐acrylamide‐2‐methyl‐1‐propanesulfonic acid as raw materials, N,N′ ‐methylene bisacrylamide as cross‐linker, and K 2 S 2 O 8 as initiator. The composite was characterized by Fourier transform infrared spectrophotometer, thermogravimetric analysis and scanning electron microscopy analysis. This article also described the adsorption behavior of the superabsorbent composite with respect to Pb(II) removal from aqueous solution. The kinetic studies for Pb(II) adsorption showed that the pseudo‐second‐order adsorption mechanism was predominant. Moreover, adsorption isotherm data were reliably described by the Freundlich model. Regeneration of the adsorbent was attained by 0.1 mol L −1 HCl. POLYM. COMPOS., 36:775–784, 2015. © 2014 Society of Plastics Engineers