Preparation of Supramolecular Molecularly Imprinted Polymers for Adsorption of Aspirin from Water
Aspirin-based supramolecularly imprinted polymer of β-CD/4-VP-MIP was prepared from β-cyclodextrin(β-CD)and 4-vinylpyridine(4-VP).The composition,morphology and specific surface area ofβ-CD/4-VP-MIP were characterized by fourier transform infrared spectra(FT-IR),transmission electron microscopy(SEM)and N2 adsorption-desorption.The adsorption selectivity,isotherm and kinetics of β-CD/4-VP-MIP for aspirin were investigated and the results showed that β-CD/4-VP-MIP has porous structures and large surface area.Additionally,the aspirin adsorption isothermal obeys the Langmuir model,the maximum adsorption capacity was 42.918 mg/g;the pseudo-second-order kinetic equation is suitable for kinetics date with a rate constant of 0.0028 g/(mg·min);Thermodynamic analysis revealed that the adsorption process is endothermic,spontaneous and entropy increasing.
NETL
NSTL
万方数据
维普
