Electrochemical sensors based on biomimetic magnetic molecularly imprinted polymer for selective quantification of methyl green in environmental samples

Khan, Sabir; Wong, Ademar; Zanoni, María Valnice Boldrin; Sotomayor, Marı́a Del Pilar Taboada

doi:10.1016/j.msec.2019.109825

Cited by 65 publications

(18 citation statements)

References 36 publications

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“…The peptide selection used in the recognition systems is important for the sensor's affinity [144]. Computer modelling [145] and simulation are two stages that improve the performances of these devices. [142].…”

Section: Biomimetic Sensorsmentioning

confidence: 99%

Recent Trends in Biosensors for Environmental Quality Monitoring

Gavrilaș

Ursachi

Perța-Crișan

et al. 2022

Sensors

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The monitoring of environmental pollution requires fast, reliable, cost-effective and small devices. This need explains the recent trends in the development of biosensing devices for pollutant detection. The present review aims to summarize the newest trends regarding the use of biosensors to detect environmental contaminants. Enzyme, whole cell, antibody, aptamer, and DNA-based biosensors and biomimetic sensors are discussed. We summarize their applicability to the detection of various pollutants and mention their constructive characteristics. Several detection principles are used in biosensor design: amperometry, conductometry, luminescence, etc. They differ in terms of rapidity, sensitivity, profitability, and design. Each one is characterized by specific selectivity and detection limits depending on the sensitive element. Mimetic biosensors are slowly gaining attention from researchers and users due to their advantages compared with classical ones. Further studies are necessary for the development of robust biosensing devices that can successfully be used for the detection of pollutants from complex matrices without prior sample preparation.

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Section: Biomimetic Sensorsmentioning

confidence: 99%

Recent Trends in Biosensors for Environmental Quality Monitoring

Gavrilaș

Ursachi

Perța-Crișan

et al. 2022

Sensors

View full text Add to dashboard Cite

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“…A linear concentration range of methyl green from 9.9 × 10 −8 to 1.8 × 10 −6 M, with a limit of detection (LOD) of 1.0 × 10 −8 M was shown. The sensor was applied for two spiked river water samples with recoveries of 93 to 103% [84].…”

Section: Dyesmentioning

confidence: 99%

Application of Molecularly Imprinted Polymers in the Analysis of Waters and Wastewaters

et al. 2021

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The increase of the global population and shortage of renewable water resources urges the development of possible remedies to improve the quality and reusability of waste and contaminated water supplies. Different water pollutants, such as heavy metals, dyes, pesticides, endocrine disrupting compounds (EDCs), and pharmaceuticals, are produced through continuous technical and industrial developments that are emerging with the increasing population. Molecularly imprinted polymers (MIPs) represent a class of synthetic receptors that can be produced from different types of polymerization reactions between a target template and functional monomer(s), having functional groups specifically interacting with the template; such interactions can be tailored according to the purpose of designing the polymer and based on the nature of the target compounds. The removal of the template using suitable knocking out agents renders a recognition cavity that can specifically rebind to the target template which is the main mechanism of the applicability of MIPs in electrochemical sensors and as solid phase extraction sorbents. MIPs have unique properties in terms of stability, selectivity, and resistance to acids and bases besides being of low cost and simple to prepare; thus, they are excellent materials to be used for water analysis. The current review represents the different applications of MIPs in the past five years for the detection of different classes of water and wastewater contaminants and possible approaches for future applications.

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“…The mixture was carefully homogenized for 20 min, employing a mortar and pestle, and kept for 12 h at room temperature to become dehydrated. Afterward, 80 µL of mineral oil was added dropwise, to obtain each modified paste (Khan et al, 2019).…”

Section: Preparation Of Mag-mip/cpe Sensormentioning

confidence: 99%

Development of a New Electrochemical Sensor Based on Mag-MIP Selective Toward Amoxicillin in Different Samples

et al. 2021

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This work describes an electrochemical sensor for the selective recognition and quantification of amoxicillin and a β-lactam antibiotic in real samples. This sensor consists of a carbon paste electrode (CPE) modified with mag-MIP (magnetic molecularly imprinted polymer), which was prepared by precipitation method via free radical using acrylamide (AAm) as functional monomer, N,N′-methylenebisacrylamide (MBAA) as a crosslinker, and potassium persulfate (KPS) as initiator, to functionalized magnetic nanoparticles. The magnetic non-imprinted polymers (mag-NIP) were prepared using the same experimental procedure without analyte and used for the preparation of a CPE for comparative studies. The morphological, structural, and electrochemical characteristics of the nanostructured material were evaluated using Field emission gun scanning electron microscopy (FEG-SEM), Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Vibrating sample magnetometry (VSM), X-ray diffraction (XRD), and voltammetric technique. Electrochemical experiments performed by square wave voltammetry show that the mag-MIP/CPE sensor had a better signal response compared to the non-imprinted polymer-modified electrode (mag-NIP/CPE). The sensor showed a linear range from 2.5 to 57 μmol L−1 of amoxicillin (r2 = 0.9964), with a limit of detection and a limit of quantification of 0.75 and 2.48 μmol L−1, respectively. No significant interference in the electrochemical signal of amoxicillin was observed during the testing experiments in real samples (skimmed milk and river water). The proposed mag-MIP/CPE sensor could be used as a good alternative method to confront other techniques to determine amoxicillin in different samples.

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Electrochemical sensors based on biomimetic magnetic molecularly imprinted polymer for selective quantification of methyl green in environmental samples

Cited by 65 publications

References 36 publications

Recent Trends in Biosensors for Environmental Quality Monitoring

Recent Trends in Biosensors for Environmental Quality Monitoring

Application of Molecularly Imprinted Polymers in the Analysis of Waters and Wastewaters

Development of a New Electrochemical Sensor Based on Mag-MIP Selective Toward Amoxicillin in Different Samples

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