Abstract
Using 3-chloropropyltriethoxysilane as an anchor, the functional monomer linear polyethylenimine(PEI) was grafted on the surface of mesoporous MCM-41. La3+ was selected as the template ion and epichlorohydrin was used as the crosslinker. A lanthanum ion MCM-41 imprinted polymer (La(III)-IIP-PEI/MCM-41) was prepared, and a non-ion-imprinted polymer (NIP-PEI/MCM-41) was arranged in the same manner. The La3+ surface imprinted polymer was characterized by means of infrared spectrometer, thermogravimetric(TG) analyzer, and scanning electron microscope(SEM). The optimal adsorption conditions and selective adsorption properties of La(III)-IIP-PEI/MCM-41 for La3+ were determined by static adsorption method and adsorption performance. Experiments show that the maximum adsorption capacity of La(III)-IIP-PEI/MCM-41 can reach 212.69 mg g1. Adsorption equilibrium can be reached at 30 min. Quasi-second-order kinetic model can be used to describe its adsorption mechanism. La(III)-IIP-PEI/MCM-41 also has a strong selectivity for La3+.
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Project supported by the Nature Science Foundation of China (Grant No. 51664042).
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Xiaogang, L., Yuwen, C., Xiu, W. et al. Preparation and Adsorption Properties of Lanthanum Ion MCM-41 Imprinted Polymers. J Inorg Organomet Polym 30, 1483–1489 (2020). https://doi.org/10.1007/s10904-019-01318-6
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DOI: https://doi.org/10.1007/s10904-019-01318-6