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Preparation and evaluation of a novel surface-imprinted polymer for selective adsorption of dibenzothiophene

Preparation and evaluation of a novel surface-imprinted polymer for selective adsorption of dibenzothiophene,10.1007/s00604-011-0661-9,Mikrochimica Ac

Preparation and evaluation of a novel surface-imprinted polymer for selective adsorption of dibenzothiophene  
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We have prepared a novel surface molecular imprinted polymer (S-MIP) using dibenzothiophene (DBT) as the template molecule, 4-vinylpyridine as the functional monomer, and potassium hexatitanate whisker as the carrier. The S-MIP was characterized by Fourier transform infrared spectroscopy and and scanning electron microscopy. The kinetics and isotherms for the adsorption of DBT on the S-MIP followed pseudo-second-order and Freundlich models, respectively. Thermodynamic parameters were determined. The overall adsorption process was endothermic and spontaneous. Selectivity studies showed that the S-MIP selectively adsorbs DBT over its structural analogs and can be regenerated. Its adsorption capacity was still at 84.8% at the sixth cycle. Figure A novel surface molecular imprinted polymer was synthesized. The kinetics and isotherms for the adsorption of dibenzothiophene followed pseudo-second-order and Freundlich models, respectively. The adsorption process was endothermic and spontaneous. The adsorbent could selectively adsorb dibenzothiophene, and had the potentiality to be reused.
Journal: Mikrochimica Acta , pp. 1-9
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