Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 187, Issue 1-3, Pages 274-282Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2011.01.009
Keywords
1-(alpha-Methyl acrylate)-3-methylimidazolium bromide; Water-soluble acid dyes; Magnetic molecularly imprinted polymer; Removal
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Funding
- National Science Fund for Distinguished Young Scholars [50725825]
- National Natural Science Foundation of China [50978132]
- Natural Science Foundation of Jiangxi Province [2009GQH0083]
- Science and Technology Support Program of Jiangxi Province [2009BSB09800]
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Novel magnetic and hydrophilic molecularly imprinted polymers (mag-MIPs) were prepared by an inverse emulsion-suspension polymerization to remove water-soluble acid dyes from contaminated water with 1-(alpha-methyl acrylate)-3-methylimidazolium bromide (1-MA-3MI-Br) being utilized as a new functional monomer. The thermal stability, chemical structure and magnetic property of the 1-MA-3MI-Br-mag-MIPs were characterized by the thermal-gravimetric analyzer (TGA), Fourier transform infrared spectrometer (FT-IR) and vibrating sample magnetometer (VSM), respectively. Moreover, effect of concentration and pH value of water-soluble acid dye solutions was optimized. Compared with the methyl acrylic acid and 4-vinylpyridine modified mag-MIPs, the 1-MA-3MI-Br-mag-MIPs showed enhanced removal efficiency. Kinetic studies depicted that the adsorption process on 1-MA-3MI-Br-mag-MIPs followed pseudo-second-order rate mechanism. Investigation results of 5 times removal-regeneration cycles by employing the 1-MA-3MI-Br-mag-MIPs showed that the resulting material was with high stability. (C) 2011 Elsevier B.V. All rights reserved.
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