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Abstract: A safe and facile approach for the preparation of magnetic molecularly imprinted polymer nanospheres for 2,4,6-trinitrotoluene (TNT) recognition is reported. The imprinted nanospheres were synthesized using TNT as the imprinting molecule, acrylamide as the functional monomer, N,N'-methylenebisacrylamide as the crosslinker and magnetic particles as the support. The structure of the materials was identified via Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. Static adsorbing experiments were carried out and Scatchard plot analysis showed that two kinds of receptor sites were formed in the imprinted materials. The adsorption equilibrium constant and the maximum adsorption capacity were evaluated. These results indicated that the imprinted nanospheres have higher adsorption capacity and selectivity for TNT than non-imprinted polymer nanospheres with the same composition. © 2013 Society of Chemical Industry
Template and target information: 2,4,6-trinitrotoluene, TNT
Author keywords: adsorption, Magnetism, molecular imprinting, molecular recognition, Scatchard plot