Citation: WANG Yue, GUO Kai-Chen, TIAN Xue-Meng, ZHAO Wen-Chang, Kaidiriye·Setiwalidi, GAO Rui-Xia. Preparation and Adsorption Performance of Core-Shell Magnetic Molecularly Imprinted Polymers for Estradiol[J]. Chinese Journal of Analytical Chemistry, ;2020, 48(10): 1375-1382. doi: 10.19756/j.issn.0253-3820.201317 shu

Preparation and Adsorption Performance of Core-Shell Magnetic Molecularly Imprinted Polymers for Estradiol

1.
School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China;
2.
Xi'an Eswin Silicon Wafer Technology Cod., Ltd, Xi'an 710077, China;
3.
Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China

Received Date: 1 June 2020
Revised Date: 21 July 2020

Fund Project: This work was supported by the Natural Science Foundation of Shaanxi Province, China (Nos. 2017JM2010, 2020JM-066).

The novel core-shell magnetic imprinted polymers (MIPs-E2) were prepared for selective adsorption of estradiol (E2) by template immobilization strategy, in which aniline (AN), ammonium persulfate (APS), E2 and carboxyl-modified Fe₃O₄ magnetic nanoparticles (Fe₃O₄-COOH) were employed as the functional monomer, initiator, template molecule, and carrier, respectively. The prepared nanomaterials were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The results showed that MIPs-E2 had uniform particle size, stable crystal structure and outstanding magnetism. In addition, the adsorption experiments displayed that MIPs-E2 had large adsorption capacity (21.34 mg/g), high selectivity (IF=2.65, SC>1.89), fast mass transfer rate (30 min) and excellent reusability (adsorption efficiency remained 93.4% after reusing for 6 cycles). This work provided a new approach for detection of the content of E2 in environmental water.
- Core-shell structure,
- Magnetic separation,
- Molecularly imprinted polymer,
- Estradiol,
- Selective adsorption
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沈阳化工大学材料科学与工程学院沈阳 110142