Preparation and Application of Core-Shell Magnetic Imprinted Nanoparticles for Bisphenol A

Magnetic molecularly imprinted polymers (MMIPs) for bisphenol A (BPA) were prepared by three step miniemulsion- polymerization and were used as selective adsorbents for extraction of BPA in lake water. The MMIPs nanoparticles ( NPs ) possessed regular morphology and good monodispersion. The average...

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Published in:Fēnxī huàxué 2013-01, Vol.41 (11), p.1724-1728
Main Authors: ZHU, Li-Li, CAO, Yu-Hua, CAO, Guang-Qun
Format: Article
Language:English
Subjects:
Adsorbents
Bisphenol A
Imprinted polymers
Lakes
Nanoparticles
Recognition
Shells
Solid phases
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CAO, Yu-Hua
CAO, Guang-Qun
description Magnetic molecularly imprinted polymers (MMIPs) for bisphenol A (BPA) were prepared by three step miniemulsion- polymerization and were used as selective adsorbents for extraction of BPA in lake water. The MMIPs nanoparticles ( NPs ) possessed regular morphology and good monodispersion. The average diameter of MMIPs NPs was 123 nm with RSD of 4. 9 % (n -50 ). The shell of MIPs was about 10 nm in thickness. These MMIPs NPs could be rapidly separated by an external magnet within 1 min from solutions. The saturated adsorption capacity of the MMIPs for BPA was 122. 2 mg/g, and the imprinting factor [alpha] was 3.5. Selective recognition experiments were performed using [beta]-estradiol, estriol and diethylstilbestrol as competitive compounds, and separation factors were 23.6, 8.8 and 3.7, respectively, which revealed excellent selectivity of MMIPs for BPA. MMIPs NPs as magnetic solid phase extractant were successfully applied to determine BPA in lake water with satisfactory recoveries.
doi_str_mv 10.3724/SP.J.1096.2013.30547
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subjects Adsorbents
Bisphenol A
Imprinted polymers
Lakes
Nanoparticles
Recognition
Shells
Solid phases
title Preparation and Application of Core-Shell Magnetic Imprinted Nanoparticles for Bisphenol A
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