State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China.
Carbohydr Polym. 2013 Sep 12;97(2):809-16. doi: 10.1016/j.carbpol.2013.05.072. Epub 2013 Jun 1.
A novel magnetic-molecularly imprinted polymer (MMIP) based on chitosan-Fe₃O₄ has been synthesized for fast separation of carbamazepine (CBZ) from water. During polymerization, the modified chitosan-Fe₃O₄ was used not only as supporter but also as functional monomer. The properties of obtained MMIP were characterized by scanning electron and transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectra, thermo-gravimetric analysis and so on. The sorption equilibrium data was well described by Freundlich isotherm model and the increase in the temperature generated an increase in the sorption amount, indicating endothermic nature of adsorption process. Sorption kinetics followed the pseudo-second-order model. The feasibility of selective sorption of CBZ from real water by the MMIP was analyzed by using spiked real water samples. The result showed that the sorption capacity of MMIP has no obvious decrease in different water samples whereas there was obvious decline in the sorption amount of the MNIP.
一种新型的基于壳聚糖- Fe₃O₄的磁性分子印迹聚合物（MMIP）已被合成，用于从水中快速分离卡马西平（CBZ）。在聚合过程中，改性的壳聚糖- Fe₃O₄不仅用作载体，还用作功能单体。通过扫描电子显微镜和透射电子显微镜、X 射线衍射、傅里叶变换红外光谱、热重分析等对所得 MMIP 的性能进行了表征。吸附平衡数据很好地符合 Freundlich 等温线模型，并且温度的升高导致吸附量增加，表明吸附过程是吸热的。吸附动力学遵循准二级模型。通过使用加标实际水样分析了 MMIP 从实际水样中选择性吸附 CBZ 的可行性。结果表明，MMIP 的吸附容量在不同水样中没有明显下降，而 MNIP 的吸附量明显下降。
