Deep eutectic solvents skeleton typed molecularly imprinted chitosan microsphere coated magnetic graphene oxide for solid‐phase microextraction of chlorophenols from environmental water

Abstract

Novel molecularly imprinted chitosan microspheres were prepared on the surface of magnetic graphene oxide, with deep eutectic solvents both as a functional monomer and template. The prepared molecularly imprinted chitosan microspheres‐magnetic graphene oxide was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X‐ray diffraction, Brunauer‐Emmett‐Teller surface area, thermogravimetric analysis were subsequently combined with solid‐phase micro‐extraction for simultaneous separation and enrichment of the extraction of chlorophenols from environmental water. Factors affecting the extraction efficiency of chlorophenols were optimized using response surface methodology. The actual extraction capacities under the optimal conditions (liquid to solid ratio = 3, cycles of adsorption/desorption = 5, 40°C extraction temperature, and extraction time for 35 min) were 86.90 mg/g. Compared to the traditional materials, the molecularly imprinted chitosan microspheres‐magnetic graphene oxide produced higher selectivity and extraction capacity.

Development and applications of deep eutectic solvent derived functional materials in chromatographic separation

“…The DES of mixing ChCl with gallic acid (1:2) was used as both a template and functional monomer. They also prepared another HMICS composite by introducing magnetic graphene oxide (GO) [83]. The obtained HMICS-MGO-DES composite showed higher adsorption capacities of chlorophenols from environmental water.…”

The Separation of Chlorobenzene Compounds from Environmental Water Using a Magnetic Molecularly Imprinted Chitosan Membrane

“…DESs have been successfully applied as solvents, additives, templates and monomers in molecular imprinting, and they show excellent properties in the separation of bioactive compounds [ 29 , 30 , 31 ]. Moreover, when DESs are used on imprinted materials, they can increase the adsorption capacity and the target molecules existing in the aqueous biological matrix [ 32 , 33 , 34 ].…”

High-efficiency solid-phase microextraction performance of polypyrrole enhanced titania nanoparticles for sensitive determination of polar chlorophenols and triclosan in environmental water samples

“…In order to enhance the adsorption capacity, to improve the removal efficiency, and to increase selectivity to the solid phase, the study of the stability and surface modication techniques of the ber is necessary. [25][26][27][28][29][30][31] Electrochemical polymerization is a unique method for the formation of coatings, it has the advantages of a simple preparation process, low cost and good reproducibility. [32][33][34] Among the conducting polymers, polypyrrole (PPy) is an intrinsic conductive polymer with a long-range p-p conjugation structure.…”