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Reference type: Journal
Authors: Xu LC, Pan JM, Dai JD, Li XX, Hang H, Cao ZJ, Yan YS
Article Title: Preparation of thermal-responsive magnetic molecularly imprinted polymers for selective removal of antibiotics from aqueous solution.
Publication date: 2012
Journal: Journal of Hazardous Materials
Volume: 233-234
Page numbers: 48-56.
DOI: 10.1016/j.jhazmat.2012.06.056
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0304389412006991

Abstract: A novel thermal-responsive magnetic molecularly imprinted polymers (TMMIPs), maghemite/silica/poly (N-isopropylacrylamide-co-acrylamide-co-ethylene glycol dimethacrylate) (γ-Fe2O3/SiO2/P (NIPAm-co-AAm-co-EGDMA)), were developed as a potential effective adsorbent for selectively remove sulfamethazine (SMZ) exist in aquatic environments, which has been recognized as a warranting considerable issue. Free radical polymerization of NIPAm, AAm and EGDMA was performed in dimethyl sulfoxide/water (DMSO/H2O) (v/v = 9/1) with 2,2'-azobisisobutyronitrile (AIBN) as initiator to coat γ-Fe2O3/SiO2/3-(methacryloxyl) propyl trimethoxysilane (MPS) microspheres through the capture of oligomers with the aid of vinyl groups on their surfaces. The unique aspect of TMMIPs was that they combined molecular recognition, magnetic separation and thermo-responsiveness. The got material was characterized by SEM, TEM, FT-IR and VSM. Batch mode adsorption studies were carried out to investigate the specific adsorption equilibrium, kinetics, and selective recognition ability of TMMIPs. Reversible recognition and release of template molecule were realized by changing environmental temperatures. Several other antibiotics were selected as model analytes to evaluate the selective recognition performance of TMMIPs. The TMMIPs have good temperature response, selectivity and reusability, making them possible in applying for antibiotics separation and controlled release
Template and target information: sulfamethazine, SMZ
Author keywords: Molecularly imprinted polymers, Thermal-responsive, Magnetic, antibiotics


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