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Issue 5, 2016
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Preparation and characterization of surface molecularly imprinted film coated on a magnetic nanocore for the fast and selective recognition of the new neonicotinoid insecticide paichongding (IPP)

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Abstract

In this work, we present a general method to prepare surface molecularly imprinted film on a magnetic nanocore for new neonicotinoid insecticide paichongding (IPP) recognition. First, magnetic Fe3O4 nanoparticles were synthesized by a hydrothermal method and coated with SiO2 on the surface, then were vinyl-modified to be Fe3O4@SiO2@C[double bond, length as m-dash]C which was the magnetic core. After that, magnetic molecularly imprinted nanoparticles (MMIPs) were synthesized by surface-imprinted polymerization in airtight tubes at 60 °C for 24 h, using IPP as the template, methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as cross-linkers. The resulting IPP-MMIPs possess specific recognition ability, fast adsorption kinetics, high adsorption capacity, and can be easily collected under an external magnetic field. The IPP-MMIPs were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and vibrating sample magnetometry (VSM). The binding experiments showed a relatively high adsorption capacity (17.30 mg g−1) and specific recognition ability over structurally related compounds. Therefore, IPP-MMIPs have the potential to become a sensitive and selective approach for IPP recognition and separation.

Graphical abstract: Preparation and characterization of surface molecularly imprinted film coated on a magnetic nanocore for the fast and selective recognition of the new neonicotinoid insecticide paichongding (IPP)

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Publication details

The article was received on 22 Oct 2015, accepted on 02 Dec 2015 and first published on 07 Dec 2015


Article type: Paper
DOI: 10.1039/C5RA22138B
RSC Adv., 2016,6, 3714-3722

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    Preparation and characterization of surface molecularly imprinted film coated on a magnetic nanocore for the fast and selective recognition of the new neonicotinoid insecticide paichongding (IPP)

    M. Zhang, H. T. Zhao, X. Yang, W. T. Zhang, J. Wang, G. Y. Liu, H. Zhang and A. J. Dong, RSC Adv., 2016, 6, 3714
    DOI: 10.1039/C5RA22138B

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