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Article

Preparation of Magnetic Surface Ion-Imprinted Polymer Based on Functionalized Fe3O4 for Fast and Selective Adsorption of Cobalt Ions from Water

by 1,†, 1,†, 1, 1, 2 and 1,*
1
College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China
2
School of Environmental Science and Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Laura Bulgariu
Water 2022, 14(2), 261; https://doi.org/10.3390/w14020261
Received: 7 December 2021 / Revised: 1 January 2022 / Accepted: 13 January 2022 / Published: 17 January 2022
(This article belongs to the Section Wastewater Treatment and Reuse)
A novel cobalt ion-imprinted polymer (Co(II)-MIIP) based on magnetic Fe3O4 nanoparticles was prepared by using Co(II) as the template ion, and bis(2-methacryloxyethyl) phosphate and glycylglycine as dual functional monomers. The fabricated material was analyzed by Fourier transform infrared spectroscopy, thermogravimetric analysis, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, Brunauer–Emmett–Teller, X-ray diffraction, and vibrating sample magnetometer. The adsorption experiments with Co(II)-MIIP, found that the maximum adsorption capacity could reach 33.4 mg·g−1, while that of the non-imprinted polymer (Co(II)-NIP) was found to reach 15.7 mg·g−1. The adsorption equilibriums of Co(II)-MIIP and Co(II)-NIP was established within 20 min and 30 min, respectively. The adsorption process could be suitably described by the Langmuir isotherm model and the pseudo-second-order kinetics model. In binary mixtures of Co(II)/Fe(II), Co(II)/Cu(II), Co(II)/Mg(II), Co(II)/Zn(II), and Co(II)/Ni(II), the relative selectivity coefficients of Co(II)-MIIP toward Co(II)-NIP were 5.25, 4.05, 6.06, 11.81, and 4.48, respectively. The regeneration experiments indicated that through six adsorption–desorption cycles, the adsorption capacity of Co(II)-MIIP remained nearly 90%. View Full-Text
Keywords: cobalt; ion-imprinted polymers; magnetic nanoparticles; dual monomers; selective adsorption cobalt; ion-imprinted polymers; magnetic nanoparticles; dual monomers; selective adsorption
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MDPI and ACS Style

Zhao, Z.; Jiang, H.; Wu, L.; Yu, N.; Luo, Z.; Geng, W. Preparation of Magnetic Surface Ion-Imprinted Polymer Based on Functionalized Fe3O4 for Fast and Selective Adsorption of Cobalt Ions from Water. Water 2022, 14, 261. https://doi.org/10.3390/w14020261

AMA Style

Zhao Z, Jiang H, Wu L, Yu N, Luo Z, Geng W. Preparation of Magnetic Surface Ion-Imprinted Polymer Based on Functionalized Fe3O4 for Fast and Selective Adsorption of Cobalt Ions from Water. Water. 2022; 14(2):261. https://doi.org/10.3390/w14020261

Chicago/Turabian Style

Zhao, Zijian, Hui Jiang, Lang Wu, Ning Yu, Zhengwei Luo, and Wenhua Geng. 2022. "Preparation of Magnetic Surface Ion-Imprinted Polymer Based on Functionalized Fe3O4 for Fast and Selective Adsorption of Cobalt Ions from Water" Water 14, no. 2: 261. https://doi.org/10.3390/w14020261

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