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Reference type: Journal
Authors: Zhou TY, Ding J, He ZY, Li JY, Liang ZH, Li CY, Li Y, Chen YH, Ding L
Article Title: Preparation of magnetic superhydrophilic molecularly imprinted composite resin based on multi-walled carbon nanotubes to detect triazines in environmental water.
Publication date: 2018
Journal: Chemical Engineering Journal
Volume: 334
Page numbers: 2293-2302.
DOI: 10.1016/j.cej.2017.11.185
Alternative URL: https://www.sciencedirect.com/science/article/pii/S1385894717321083

Abstract: In this work, a superhydrophilic surface imprinting composite resin was constructed for selective enrichment of triazines, which was first fabricated by one-pot condensation of formaldehyde, resorcinol and melamine on the surface of the magnetic multi-walled carbon nanotubes (MWNTs@Fe3O4). The effect of the amount of template (ametryn) on the imprinting performance was investigated. The FT-IR, VSM, XRD, SEM and water contact test indicated that the magnetic multi-walled carbon nanotubes imprinting resin (MWNTs@Fe3O4@MIR) was successfully prepared and exhibited superhydrophilic and excellent magnetic separation characteristics. The isothermal adsorption, selectivity and adsorption kinetics tests indicated that the prepared MWNTs@Fe3O4@MIR had better specific recognition for triazines. The adsorption isotherm obeyed Freundlich isotherm model and adsorption kinetic matched pseudo-second-order kinetic model well. Under the optimized conditions, the MWNTs@Fe3O4@MIR was successfully applied as selective adsorbent for the direct enrichment and determination of triazines in environmental water samples combined with HPLC-MS/MS. The established method exhibited good linearity (R2 0.9987), lower limit of detection (0.007 - 0.06μ μg L-1), and excellent precision (RSD < 9%). The surface imprinted strategy based on MWNTs@Fe3O4 developed a new way for the preparation of superhydrophilic magnet imprinting nanocomposites, which exhibited a perspective in the determination of triazines in water
Template and target information: melamine, triazines
Author keywords: Magnetic, Multi-walled carbon nanotubes, Hydrophilic molecular imprinted resin, triazines, water samples, High performance liquid chromatography tandem mass spectrometry

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