Magnetic Surface Molecularly Imprinted Polymer for Selective Adsorption of 4-Hydroxycoumarin

Kuang, Yi; Xia, Yunlong; Wang, Xing; Rao, Qingqing; Yang, Shengxiang

doi:10.3389/fchem.2022.862777

Cited by 10 publications

(2 citation statements)

References 34 publications

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“…Kuang, silanized Fe304@SiO2 A novel magnetic surface molecularly imprinted polymer (HC/SMIPs) was prepared for the specific extraction of 4-hydroxycoumarin. The maximum adsorption capacity of HC/SMIPs could reach to 22.78 mg/g ( Kuang et al, 2022 ). Marrane describe a novel approach for in situ synthesis of cellulose microfibrils- grafted -hydroxyapatite (CMFs- g -HAP N (8%)) as an adsorbent using phosphate rock and date palm petiole wood as alternative and natural Moroccan resources.…”

Section: Introductionmentioning

confidence: 99%

How β-cyclodextrin- loaded mesoporous SiO2 nanospheres ensure efficient adsorption of rifampicin

et al. 2022

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In this study, β-CD@mesoporous SiO2 nanospheres (β-CD@mSi) were prepared by loading β-cyclodextrin (β-CD) onto mesoporous silica nanospheres through an in situ synthesis. This not only solved the defect of β-CD being easily soluble in water, but also changed the physical structure of the mesoporous silica nanospheres. FTIR and XPS results showed that β-CD was successfully loaded onto mesoporous silica nanospheres (mSi), while enhancing the adsorption effect. β-CD@mSi with a monomer diameter of about 150 nm were prepared. At a temperature of 298k, the removal efficiency of a 100 mg/L solution of rifampicin can reach 90% in 4 h and the adsorption capacity was 275.42 mg g−1 at high concentration. Through the calculation and analysis of adsorption kinetics, adsorption isotherms and adsorption thermodynamics based on the experimental data, the reaction is a spontaneous endothermic reaction dominated by chemical adsorption. The electron transfer pathway, structure–activity relationship and energy between β-CD@mSi and rifampicin were investigated by quantum chemical calculations. The accuracy of the characterization test results to judge the adsorption mechanism was verified, to show the process of rifampicin removal by β-CD@mSi more clearly and convincingly. The simulation results show that π–π interaction plays a major interaction in the reaction process, followed by intermolecular hydrogen bonding and electrostatic interactions.

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Section: Introductionmentioning

confidence: 99%

How β-cyclodextrin- loaded mesoporous SiO2 nanospheres ensure efficient adsorption of rifampicin

et al. 2022

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“…This was due to imprinting voids after removal of template molecules in EC-MMIPs. The blotting cavity formed on the surface of the blotting layer increases the adsorption area and the number of binding sites, thus improving the adsorption capacity of EC-MMIPs 31 .…”

Section: Characterizationmentioning

confidence: 99%

Computer-Aided design for the preparation of magnetic molecularly imprinted polymers for recognition of ethyl carbamate

Cui

et al. 2023

Preprint

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In this study, computer-aided design of molecularly imprinted systems was carried out using the quantum chemistry software Gaussian. Based on density functional theory (DFT), the interaction energies of the template-monomer complexes were calculated under the B3LYP, 6-31G+(d,p) basis set, and the reaction sites and Imprinting ratio were predicted based on the electrostatic potential map and NBO charge transfer. The urethane magnetic molecularly imprinted polymers (EC-MMIPs) were successfully prepared using surface molecular imprinting technique with Fe3O4 as the magnetic carrier. The polymers were characterized by scanning electron microscopy, Fourier transform infrared, X-ray diffraction, vibrating sample magnetometry and thermogravimetric analysis. The results of isothermal adsorption and dynamic adsorption experiments showed that the EC-MMIPs had good adsorption performance, reaching the maximum adsorption amount (18.53 µg/mg) within 40 min. In competitive adsorption experiments, the speckle coefficient was 2.3. In addition, EC-MMIPs showed good adsorption efficiency even after five uses.

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Reusable magnetic molecular imprinted polymers based on magnetic graphene oxide for selective identification and detection of eugenol in environmental water samples

Sha,

Wu,

Dai

et al. 2024

ANAL. SCI.

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Magnetic Surface Molecularly Imprinted Polymer for Selective Adsorption of 4-Hydroxycoumarin

Cited by 10 publications

References 34 publications

How β-cyclodextrin- loaded mesoporous SiO2 nanospheres ensure efficient adsorption of rifampicin

How β-cyclodextrin- loaded mesoporous SiO2 nanospheres ensure efficient adsorption of rifampicin

Computer-Aided design for the preparation of magnetic molecularly imprinted polymers for recognition of ethyl carbamate

Reusable magnetic molecular imprinted polymers based on magnetic graphene oxide for selective identification and detection of eugenol in environmental water samples

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