Novel Fe2O3@CeO2 Coreshell‐based Electrochemical Nanosensor for the Voltammetric Determination of Norepinephrine

Mazloum‐Ardakani, Mohammad; Alizadeh, Zahra; Sabaghian, Fariba; Mirjalili, Bibi-Fatemeh; Salehi, Naeimeh

doi:10.1002/elan.201900454

Cited by 17 publications

(3 citation statements)

References 33 publications

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“… 7 In recent years, there has been great development of new materials for electrochemical applications such as carbon nanomaterials 8 − 10 and metal nanoparticles. 11 − 13 The attractiveness of nanomaterials including a unique characteristic, high chemical reactivity, and high surface area 14 , 15 significantly increases the sensitivity of electrochemical measures. 16 The attractive characteristic of the material can allow its use in the development of modified electrodes for the determination of target analytes with environmental concerns.…”

Section: Introductionmentioning

confidence: 99%

Novel and Highly Sensitive Electrochemical Sensor for the Determination of Oxytetracycline Based on Fluorine-Doped Activated Carbon and Hydrophobic Deep Eutectic Solvents

et al. 2022

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Residues of oxytetracycline (OTC), a veterinary antibiotic and growth promoter, can be present in animal-derived foods; their consumption is harmful to human health and their presence must therefore be detected and regulated. However, the maximum residue limit is low, and consequently highly sensitive and accurate detectors are required to detect the residues. In this study, a novel highly sensitive electrochemical sensor for the detection of OTC was developed using a screen-printed electrode modified with fluorine-doped activated carbon (F-AC/SPE) combined with a novel deep eutectic solvent (DES). The modification of activated carbon by doping with fluorine atoms (F-AC) enhanced the adsorption and electrical activity of the activated carbon. The novel hydrophobic DES was prepared from tetrabutylammonium bromide (TBABr) and a fatty acid (malonic acid) using a green synthesis method. The addition of the DES increased the electrochemical response of F-AC for OTC detection; furthermore, it induced preconcentration of OTC, which increased its detectability. The electrostatic interactions between DES and OTC as well as the adsorption of OTC on the surface of the modified electrode through H-bonding and π–π interactions helped in OTC detection, which was quantified based on the decrease in the anodic peak potential (E pa = 0.3 V) of AC. The electrochemical behavior of the modified electrode was investigated by cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy. Under optimum conditions, the calibration plot of OTC exhibited a linear response in the range 5–1500 μg L–1, with a detection limit of 1.74 μg L–1. The fabricated electrochemical sensor was successfully applied to determine the OTC in shrimp pond and shrimp samples with recoveries of 83.8–100.5% and 93.3–104.5%, respectively. In addition to the high sensitivity of OTC detection, the proposed electrochemical sensor is simple, cost-effective, and environmentally friendly.

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Section: Introductionmentioning

confidence: 99%

Novel and Highly Sensitive Electrochemical Sensor for the Determination of Oxytetracycline Based on Fluorine-Doped Activated Carbon and Hydrophobic Deep Eutectic Solvents

et al. 2022

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“…Supplementary Table S1 (SI) demonstrates the comparison of determination of NE using different electrodes. As shown, the LOD is lower than that obtained from molybdenum trioxide nanowires modified GCE (MoO 3 NWs/GCE), ( Samdani et al, 2017 ), silica/titania material containing gold nanoparticles stabilized by chitosan modified carbon paste electrode (SiTi/AuNP/CPE) ( Morawski et al, 2021 ), Sulphur nanodots decorated graphene oxide modified GCE (nS@GO/GCE) ( Jaiswal and Tiwari, 2021 ), molecularly imprinted polymer (MIP) functionalized single-walled carbon nanotubes modified GCE (MIP-modified SWNTs/GCE) ( Wang et al, 2017 ), 6-amino-4-(3,4-dihydroxyphenyl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (ADPC) assisted Fe 2 O 3 @CeO 2 coreshell nanoparticles (CNs) modified CPE (ADPC/Fe 2 O 3 @CeO 2 /GCE), ( Mazloum‐Ardakani et al, 2020 ), MIP-coated palladium nanoparticles modified GCE (MIP-coated PdNPs/GCE) ( Chen et al, 2015 ).…”

Section: Resultsmentioning

confidence: 99%

Sensitive detection of noradrenaline in human whole blood based on Au nanoparticles embedded vertically-ordered silica nanochannels modified pre-activated glassy carbon electrodes

Huang

2023

Front. Chem.

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Sensitive determination of noradrenaline (NE), the pain-related neurotransmitters and hormone, in complex whole blood is of great significance. In this work, an electrochemical sensor was simply constructed on the pre-activated glassy carbon electrode (p-GCE) modified with vertically-ordered silica nanochannels thin film bearing amine groups (NH2-VMSF) and in-situ deposited Au nanoparticles (AuNPs). The simple and green electrochemical polarization was employed to pre-activate GCE to realize the stable binding of NH2-VMSF on the surface of electrode without the use of any adhesive layer. NH2-VMSF was conveniently and rapidly grown on p-GCE by electrochemically assisted self-assembly (EASA). With amine group as the anchor sites, AuNPs were in-situ electrochemically deposited on the nanochannels to improve the electrochemical signals of NE. Owing to signal amplification from gold nanoparticles, the fabricated AuNPs@NH2-VMSF/p-GCE sensor can achieve electrochemical detection of NE ranged from 50 nM to 2 μM and from 2 μM to 50 μM with a low limit of detection (LOD) of 10 nM. The constructed sensor exhibited high selectivity and can be easily regenerated and reused. Owing to the anti-fouling ability of nanochannel array, direct electroanalysis of NE in human whole blood was also realized.

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“…Moreover, as the scan rate increased, the E pa and E pc separation increased too, which was due to the kinetic limitation of the reaction. 61,62 As for the ratio of the anodic and cathodic peak currents (I pa /I pc ), it was 1.02, showing that the oxidation and reduction product of the probe were stable at the surface of the carbon ink, and no adsorption of probe ions occurred on the surface. To improve the physicochemical properties of the carbon ink, the electrode surface was modified with AGO.…”

Section: Electrochemical Characterization Of the Paper-based Device-mentioning

confidence: 99%

Flexible Paper-Based Immunosensor for the Detection of Specific Cancer-Derived Exosomes

Sahraie¹,

Mazloum-Ardakani²,

Mohiti³

et al. 2022

J. Electrochem. Soc.

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This study aims at an electrochemical paper-based device for the selective and sensitive detection of exosomes as an economical and flexible platform. Using a laser cutter, a three-electrode platform was patterned on a hydrophobic paper and then synthetic carbon and silver ink were screen-printed onto the paper. Anti-human CD9 antibody was covalently attached to the surface of a carbon ink electrode enriched with graphene oxide aerogel/CoFe2O4@chitosan nanocomposite. The immobilization, incubation, and binding time of the capture antibody were investigated as effective parameters. Under optimum conditions, the differential pulse voltammetry data were used to establish a calibration plot that covered 500 to 5×106 exosoms/µL with a detection limit of 100 exosome/µL. This method was implemented successfully for the detection of exosomes in a serum sample. As the results show, the fabricated biosensor is capable of detecting exosomes for the early diagnosis of cancers.

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Novel Fe₂O₃@CeO₂ Coreshell‐based Electrochemical Nanosensor for the Voltammetric Determination of Norepinephrine

Cited by 17 publications

References 33 publications

Novel and Highly Sensitive Electrochemical Sensor for the Determination of Oxytetracycline Based on Fluorine-Doped Activated Carbon and Hydrophobic Deep Eutectic Solvents

Novel and Highly Sensitive Electrochemical Sensor for the Determination of Oxytetracycline Based on Fluorine-Doped Activated Carbon and Hydrophobic Deep Eutectic Solvents

Sensitive detection of noradrenaline in human whole blood based on Au nanoparticles embedded vertically-ordered silica nanochannels modified pre-activated glassy carbon electrodes

Flexible Paper-Based Immunosensor for the Detection of Specific Cancer-Derived Exosomes

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