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Reference type: Journal
Authors: Yang X, Zhang ZH, Chen X, Zhang ML, Luo LJ, Peng MJ, Nie LH
Article Title: Preparation of Bis(2-ethylhexyl) phthalate Imprinted Polymers Based on Multi-walled Carbon Nanotubes Surface and Its Application in Solid Phase Extraction.
Publication date: 2012
Journal: Chinese Journal of Analytical Chemistry
Volume: 40
Issue: (6)
Page numbers: 870-876.
DOI: 10.3724/SP.J.1096.2012.11074
Alternative URL:

Abstract: A novel molecularly imprinted polymers (MIPs) based on phenyl group modified multi-walled carbon nanotubes( MWNTs) was prepared by using Bis(2-ethylhexyl) phthalate (DEHP) as the template molecule, methacrylic acid (MAA) as the functional monomers and ethylene glycol dimethacrylate (EGDMA) as the cross-linkers. The multi-walled carbon nanotubes-molecularly imprinted polymers (MWNTs-MIPs) were characterized by infrared spectroscopy (IR) and scanning electron microscopy (SEM). The results showed that an imprinted layer with the average thickness of 20 to 30 nm was grafted on the MWNTs surface. The adsorption properties were investigated by high performance liquid chromatography. Adsorption experiments showed that DEHP adsorbed on MWNTs-MIPs was estimated to be 69.1 μmol/g and the equilibrium adsorption reached about 60min. Selective test showed that the MWNTs-MIPs had an excellent recognition capacity toward DEHP compared to structural analogues. Packed into the solid phase extraction (SPE) column, the MWNTs-MIPs has been used to separate and concentrate DEHP from mango juice sample
Template and target information: bis(2-ethylhexyl)phthalate
Author keywords: surface molecular imprinting, carbon nanotubes, solid phase extraction, Bis(2-ethylhexyl) phthalate

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