Fabrication of a novel surface molecularly imprinted polymer based on zeolitic imidazolate framework-7 for selective extraction of phthalates

Gao, Jun; Fan, Danyang; Chu, Qinghua; Lyu, Haixia; Xie, Zenghong

doi:10.1016/j.microc.2022.107399

Cited by 13 publications

(1 citation statement)

References 33 publications

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“…However, the selectivity of the ferrous MOFs is poor, and they are unable to remove low concentrations of pollutants with specificity [24][25][26][27][28][29][30][31]. Molecularly imprinted polymers (MIPs) have been widely used to separate and enrich PAEs, as they possess specific recognition sites that are complementary to the size and shape of the template molecules [32][33][34][35][36][37]. These studies demonstrate that MOF-MIP materials have a high potential for separation and enrichment of molecules, as they combine the high selectivity of MIPs with the high adsorption capacity of MOFs.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Magnetic Molecularly Imprinted Polymers for Selective Extraction of Dibutyl Phthalates in Food Matrices

Li,

Lu,

Wang

et al. 2024

Foods

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In this study, a novel magnetic molecularly imprinted polymeric material (Fe3O4@MOF@MIP-160) with a metal-organic backbone (Fe3O4@MOF) carrier was prepared using dibutyl phthalate (DBP) as a template. The material can be used for the efficient, rapid, and selective extraction of trace amounts of phthalic acid esters (PAEs) in food and can detect them via gas chromatography-mass spectrometry (GC-MS). The synthesis conditions of the materials were optimized to prepare the Fe3O4@MOF@MIP160 with the highest adsorption performance. Transmission electron microscopy (TEM), Fourier Transform Infrared Spectra (FT-IR), Vibration Sample Magnetic (VSM), and the Brunauer–Emmett–Teller (BET) method were used to characterize the materials. Compared with Fe3O4@MOF and the magnetic non-imprinted polymeric material (Fe3O4@MOF@NIP), Fe3O4@MOF@MIP-160 possesses the advantages of easy and rapid manipulation of magnetic materials, the advantages of high specific surface area and the stability of metal–organic frameworks, and the advantages of high selectivity of molecularly imprinted polymers. Fe3O4@MOF@MIP-160 has good recognition and adsorption capacity for di-butyl phthalate (DBP) and diethylhexyl phthalate (DEHP): the adsorption capacity for DBP and DEHP is 260 mg·g−1 and 240.2 mg·g−1, and the adsorption rate is fast (reaching equilibrium in about 20 min). Additionally, Fe3O4@MOF@MIP160 could be recycled six times, making it cost-effective, easy to operate, and time-saving as compared to traditional solid-phase extraction materials. The phthalate ester content in drinking water, fruit juice, and white wine was analyzed, with recoveries ranging from 70.3% to 100.7%. This proved that Fe3O4@MOF@MIP160 was suitable for detecting and removing PAEs from food matrices.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Magnetic Molecularly Imprinted Polymers for Selective Extraction of Dibutyl Phthalates in Food Matrices

Li,

Lu,

Wang

et al. 2024

Foods

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Dummy Template–Based Molecularly Imprinted Solid-Phase Microextraction Coating for Analysis of Plasticizers in Food Samples

Li,

Chen,

et al. 2024

Food Anal. Methods

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A series of molecularly imprinted polymers (MIPs) were prepared on the surface of microspheres(CG161M) and applied as adsorbent for the rapid and selective detection of phthalates compounds, including diethyl phthalate (DEP), dibutyl phthalate (DBP), dioctyl phthalate (DOP). Surface deposition and layer by layer self-assembling method were also utilized in the preparetion of molecularly imprinted polymers. The synthesized composites were characterized by Fourier transform infrared spectrometer, scanning electron microscope, thermo gravimetric analysis and Nitrogen adsorption analysis. The maximum adsorption capacities of the MIPs for DEP, DBP and DOP were 0.006, 0.008 and 0.007 mg g − 1 , respectively. The adsorption of phthalates reached equilibrium within 260 min and complied well with pseudo-second-order kinetic model and Langmuir model. Dioctyl phthalate(DOP) was used as a dummy template for diethyl phthalate(DEP) and dibutyl phthalate(DEP), allowing selective and speci c identi cation of DEP and DBP and did not affect the accuracy of the analysis even if the leakage of template occured. Moreover, MIPs-based hollow ber stir bar sorptive extraction followed by gas chromatography-mass spectrometry was applied to the detection of DEP, DBP and DOP in several food samples. Under the optimum conditions, the limits of detection (LODs) for DEP, DBP and DOP were 0.0047, 0.0054 and 0.0031 mg L − 1 , with spiked recoveries of 73.06-106.02% and relative standard deviations (RSDs) of 3.91-6.89%, exhibiting high adsorption capacity, good selectivity and fast kinetic towards DEP, DBP and DOP. Since the template of surface molecularly imprinted polymers could be changed with the analytes, MIPsbased molecularly imprinted polymers combining with hollow ber stirring bar sorptive extraction can be a promising and selective method for separation and extraction of series analytes with similar structure in complicated samples without sample clean-up.

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Hydrophilic imprinted MnO2 nanowires “coating” membrane with ultrahigh adsorption capacity for highly selective separation of Artemisinin/Artemether

Meng

Hui

et al. 2023

Chemical Engineering Journal

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Fabrication of a novel surface molecularly imprinted polymer based on zeolitic imidazolate framework-7 for selective extraction of phthalates

Cited by 13 publications

References 33 publications

Fabrication of Magnetic Molecularly Imprinted Polymers for Selective Extraction of Dibutyl Phthalates in Food Matrices

Fabrication of Magnetic Molecularly Imprinted Polymers for Selective Extraction of Dibutyl Phthalates in Food Matrices

Dummy Template–Based Molecularly Imprinted Solid-Phase Microextraction Coating for Analysis of Plasticizers in Food Samples

Hydrophilic imprinted MnO2 nanowires “coating” membrane with ultrahigh adsorption capacity for highly selective separation of Artemisinin/Artemether

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