Competitive fluorescence assay for specific recognition of atrazine by magnetic molecularly imprinted polymer based on Fe 3 O 4 -chitosan

Liu, Guangyang; Li, Tengfei; Yang, Xin; She, Yongxin; Wang, Miao; Wang, Jing; Zhang, Min; Wang, Shanshan; Jin, Fen; Jin, Maojun; Shao, Hua; Jiang, Zejun; Yu, Hailong

doi:10.1016/j.carbpol.2015.10.062

Cited by 66 publications

(26 citation statements)

References 26 publications

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“…Therefore, the adsorption of atrazine onto the MMIP could reach equilibrium within 2 h, indicating the adsorption was a quick process, due to the faster mass transfer brought by surface-imprinting technology. It was also found that the adsorption amounts of atrazine on the MMIP at various temperatures (25,35, and 45 • C) were significantly greater than that on the MNIP, suggesting there was a good imprinting effect of the MMIP for atrazine.…”

Section: F I G U R Ementioning

confidence: 91%

“…To show the advantages of the MMIP prepared in this study, Table 1 compared it with other previously reported MIPs [4,34,35] for sorption of atrazine in terms of sorption capacity and equilibrium time. As can be seen, the MMIP synthesized in this study revealed the shortest equilibrium time, and a relatively high adsorption capacity as compared to the other imprinted materials, which clearly show the advantages of the MMIP.…”

Section: Comparison With Other Adsorbentsmentioning

confidence: 99%

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Synthesis of a molecularly imprinted polymer on mSiO₂@Fe₃O₄ for the selective adsorption of atrazine

Huang

et al. 2018

J of Separation Science

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Atrazine contamination of water is of considerable concern because of the potential hazard to human health. In this study, a magnetic molecularly imprinted polymer for atrazine was prepared by the surface-imprinting technique using Fe O as the core, mesoporous silica as the carrier, atrazine as the template, and itaconic acid as the functional monomer. The magnetic molecularly imprinted polymer was characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, and vibration-sample magnetometry. The binding properties of the magnetic molecularly imprinted polymer toward atrazine were investigated by adsorption isotherms, kinetics, and competitive adsorption. It was found that the adsorption equilibrium was achieved within 2 h, the maximum adsorption capacity of atrazine was 8.8 μmol/g, and the adsorption process could be well described by the Langmuir isotherm model and pseudo-second-order kinetic model. The magnetic molecularly imprinted polymer exhibited good adsorption selectivity for atrazine with respect to structural analogues, such as cyanazine, simetryne, and prometryn. The reusability of the magnetic molecularly imprinted polymer was demonstrated for at least five repeated cycles without a significant decrease in adsorption capacity. These results suggested that the magnetic molecularly imprinted polymer could be used as an efficient material for the selective adsorption and removal of atrazine from water samples.

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Section: F I G U R Ementioning

confidence: 91%

Section: Comparison With Other Adsorbentsmentioning

confidence: 99%

Synthesis of a molecularly imprinted polymer on mSiO₂@Fe₃O₄ for the selective adsorption of atrazine

Huang

et al. 2018

J of Separation Science

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“…Chitosan, a natural polysaccharide rich in amino groups, is produced by the deacetylation of chitin and is hydrophilic, non‐toxic, biodegradable, and biocompatible. Because the molecular structure of chitosan contains multiple functional groups, such as amino and hydroxyl groups, chitosan and its derivatives have been applied in various fields, including the food industry, membranes, cosmetics, and medicine . Fe 3 O 4 ‐CTS have favorable characteristics, such as super para magnetism, high surface‐to‐volume ratio, and functional modification.…”

Section: Introductionmentioning

confidence: 99%

Molecular imprinted polymers based on magnetic chitosan with different deep eutectic solvent monomers for the selective separation of catechins in black tea

Dai

Row

2018

Electrophoresis

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Two types of molecular-imprinted polymers-based magnetic chitosan with facile deep eutectic solvent-functional monomers (Fe O -CTS@DES-MIPs) were synthesized and applied as adsorbents in magnetic solid-phase extraction (MSPE) for the selective recognition and separation of (+)-catechin, (-)-epicatechin, and (-)-epigallocatechin gallate in black tea. The obtained Fe O -CTS@DES-MIPs were characterized by Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The selective recognition ability was examined by adsorption experiments. The actual amounts of (+)-catechin, (-)-epicatechin, and (-)-epigallocatechin gallate extracted from black tea using Fe O -CTS@DES-MIPs by the MSPE method were 13.10, 6.32, and 8.76 mg/g, respectively. In addition, the magnetic Fe O -CTS@DES-MIPs showed outstanding recognition and selectivity. Therefore, it can be used to separate bioactive compounds from black tea. The new-type of DES adopted as the functional monomer in this paper provides a new perspective for the recognition and separation of bioactive compounds.

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“…In this method, the cost of the adsorbent and its regeneration is challenging. The MIPs benefit from considerable prominent characterizations such as high selectivity, easy, fast and cost-effective preparation and physical and thermal stability [16]. Due to these properties MIPs have received wide interest from scientific community, recently.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Molecularly Imprinted Polymer on Magnetic Core-Shell Silica Nanoparticles for Recognition of Congo Red

Harsini¹,

Ansari²,

Kazemipour³

2018

Eurasian J Anal Chem

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The extraction of Congo red from aqueous media is reported by a synthesized magnetic molecularly imprinted polymer. This polymer was prepared by coating of synthesized molecularly imprinted polymer on pre-prepared amino-modified Fe3O4 nanoparticles (Fe3O4@NH2-SiO2) surface. Coating process was done through the chemical coprecipitation method by use of acrylamide as functional monomer, N, N' methylenebisacrylamid as cross-linking agent, ammonium persulfate as initiator and N, N, N', N'-tetramethylethylenediamine as co-initiator in the presence of Congo red. The polymer was characterized by Field emission scanning electron microscope, Fourier transform infrared spectrometer, vibrating sample magnetometer, X-ray diffraction, and re-binding experiments. In addition, more investigations were performed including isotherms, adsorption kinetics, competitive adsorption and reusability. The results proved the sensitivity of the prepared polymer toward magnetic field. Accordingly, it can be easily removed by an external magnet. It demonstrated effective recognition selectivity as well as ability to simultaneous separation and enrichment of Congo red.

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Competitive fluorescence assay for specific recognition of atrazine by magnetic molecularly imprinted polymer based on Fe 3 O 4 -chitosan

Cited by 66 publications

References 26 publications

Synthesis of a molecularly imprinted polymer on mSiO₂@Fe₃O₄ for the selective adsorption of atrazine

Synthesis of a molecularly imprinted polymer on mSiO₂@Fe₃O₄ for the selective adsorption of atrazine

Molecular imprinted polymers based on magnetic chitosan with different deep eutectic solvent monomers for the selective separation of catechins in black tea

Synthesis of Molecularly Imprinted Polymer on Magnetic Core-Shell Silica Nanoparticles for Recognition of Congo Red

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Competitive fluorescence assay for specific recognition of atrazine by magnetic molecularly imprinted polymer based on Fe 3 O 4 -chitosan

Cited by 66 publications

References 26 publications

Synthesis of a molecularly imprinted polymer on mSiO2@Fe3O4 for the selective adsorption of atrazine

Synthesis of a molecularly imprinted polymer on mSiO2@Fe3O4 for the selective adsorption of atrazine

Molecular imprinted polymers based on magnetic chitosan with different deep eutectic solvent monomers for the selective separation of catechins in black tea

Synthesis of Molecularly Imprinted Polymer on Magnetic Core-Shell Silica Nanoparticles for Recognition of Congo Red

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Synthesis of a molecularly imprinted polymer on mSiO₂@Fe₃O₄ for the selective adsorption of atrazine

Synthesis of a molecularly imprinted polymer on mSiO₂@Fe₃O₄ for the selective adsorption of atrazine