Electrocatalytic Response of Dopamine at Mannitol and Triton X-100 Modified Carbon Paste Electrode: A Cyclic Voltammetric Study

Manjunatha, Jamballi G.; Swamy, B.E. Kumara; Mamatha, G.; Gilbert, Ongera; Shreenivas, Mellekatte T.; Sherigara, B. S.

doi:10.1016/s1452-3981(23)15256-4

Cited by 45 publications

(9 citation statements)

References 27 publications

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“…Currently, various methods have been established for the detection of LEV, including methods based on fluorescence, , chemiluminescence, , capillary electrophoresis, , and high-performance liquid chromatography (HPLC). – Although these methods are reliable and widely accepted, they also have considerable shortcomings, such as being costly and time-consuming, in addition to requiring tedious operations, skilled technicians, and the consumption of large amounts of toxic solvents. Alternatively, electrochemical methods – have demonstrated outstanding advantages, such as reduced costs, simple operations, short response times, and high sensitivities. Therefore, electrochemical methods, such as voltammetry, have been adopted for the trace detection of fluoroquinolone antibiotics. – However, the bare electrodes usually suffer from a poor sensitivity toward LEV due to the sluggish electron-transfer process .…”

Section: Introductionmentioning

confidence: 99%

Lamellar α-Zirconium Phosphate Nanoparticles Supported on N-Doped Graphene Nanosheets as Electrocatalysts for the Detection of Levofloxacin

Li,

Wan,

Xia

et al. 2023

ACS Appl. Nano Mater.

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The excessive use of levofloxacin (LEV) can lead to significant environmental pollution, while also damaging human health. The accurate detection of its concentration is therefore essential to protect both the environment and human health. Herein, we report the simple synthesis of α-zirconium phosphate supported on nitrogen-doped graphene nanosheets (α-ZrP/NG) and its application in the voltammetric determination of trace LEV in real samples. The surface morphology, microstructure, and electrochemical properties of α-ZrP/NG were investigated by microscopic and spectroscopic techniques. The analytical parameters, including the accumulation potential, accumulation time, loading volume, and buffer pH, were optimized to improve the electrocatalytic sensing performance of α-ZrP/NG. Owing to the synergetic interaction between α-ZrP and NG, the proposed sensor exhibited an excellent electrocatalytic activity for the electrical oxidation of LEV. In the range of 0.01−5.0 μM, the anodic peak current of LEV increased linearly with an increase in the LEV concentration, and the limit of detection was 2.6 nmol L −1 . Finally, the LEV levels in wastewater, human serum, milk, and eye drop samples were determined by using the α-ZrP/NG system combined with a glassy carbon electrode to give satisfactory recoveries (98.48−103.2%), indicating that the prepared sensor demonstrates promise for use in environmental, food, and drug monitoring applications.

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Section: Introductionmentioning

confidence: 99%

Lamellar α-Zirconium Phosphate Nanoparticles Supported on N-Doped Graphene Nanosheets as Electrocatalysts for the Detection of Levofloxacin

Li,

Wan,

Xia

et al. 2023

ACS Appl. Nano Mater.

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“…They are widely used in the electrochemical fields due to low background currents, facile fabrication, low cost, easy renewal of its surface, high reproducibility, and wide-potential window. [31][32][33][34][35][36][37][38][39][40] However, the application of bare CPEs is limited due to their low sensitivity and selectivity. 41 To improve these limitations, CPEs were modified with many modifiers such as antimony powder, 42 MWCNTs, 43 double-stranded DNA and ferric oxide nanoparticles, 44 and polymeric substances.…”

mentioning

confidence: 99%

Indirect Differential Pulse Voltammetric Determination of Fluoride Ions at Carbon Paste Electrode Modified with Porous and Electroactive Fe³⁺/Fe²⁺Based-Metal Organic Frameworks Type MIL-101(Fe)

Mahmoud

Mahnashi

Abu-Alrub

et al. 2021

J. Electrochem. Soc.

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An innovative and reliable electrochemical sensor was proposed for simple, sensitive and selective determination of F- ions. The sensor is based on the fabrication of porous and electroactive Fe-based metal organic frameworks [MIL-101(Fe)]. It was blended with graphite powder and liquid paraffin oil to from carbon paste electrode (CPE). The MIL-101(Fe)@CPE was characterized using different techniques such as scanning electron microscope, powder X-ray diffraction spectroscopy, Fourier transform infrared spectroscopy, energy dispersive X-ray, cyclic voltammetry, electrochemical impedance spectroscopy, differential pulse voltammetry. The MIL-101(Fe)@CPE exhibited two redox peaks (anodic and cathodic) corresponding to Fe3+ and Fe2+, respectively. The determination of F- ions based on the formation of a stable fluoroferric complex with Fe3+/ Fe2+, decreasing the currents of redox species. It was found that the anodic peak current (Ipa) is linearly proportional to the concentration of F- in the range of 0.67-130 µM with a limit of detection (S/N=3) of 0.201 µM. The electrode exhibited good selectivity towards F- detection with no significant interferences from common anions. The as-fabricated sensor was applied for the determination of F- in environmental water samples with recoveries % and RSDs % in the range of 98.1-102.4 % and 2.4-3.7 %, respectively.

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“…33 Electrochemical sensor performance was affected considerably by experimental parameters (pH value and accumulation time), so these parameters have been investigated and optimized. 34 The DPV curves of 50 μM CAP at MoS 2 -3/SPE with different pH values (3)(4)(5)(6)(7)(8)(9)(10)(11) were shown in Fig. S1.…”

Section: R Nhoh R No 2e 2hmentioning

confidence: 99%

Exploring the Impact of Structural and Physical Properties of Layered Molybdenum Disulfide on Electrochemical Characteristics and The Sensitive Response to Chloramphenicol Detection

Pham,

Ong,

Tien

et al. 2023

J. Electrochem. Soc.

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This report focuses on evaluating the influence of structural and physical properties of MoS2 material on electrochemical behaviors as well as sensing performance toward the detection of targeted chloramphenicol (CAP) molecules. The various MoS2 samples were fabricated via a simple ultrasonication route at different experimental times. Through using X-ray diffraction (XRD), Raman, and scanning electron microscopy (SEM), structural and chemophysical characterizations were analyzed and discussed. Furthermore, from electrochemical measurements such as CV, EIS, DPV, and CA, the recorded results exhibited strong differences in the current response and the kinetic parameters of redox reactions among the proposed electrodes. It is also interesting to note that the proposed possible hypotheses and suitable mechanisms are particularly necessary to explain in more detail the important changes in kinetic parameters and sensing performance at MoS2-modified electrodes. Among them, the MoS2-3 sample with good crystallinity, high purity, low intrinsic thickness, and particularly, a defect-rich structure offered remarkable advances compared with that of other materials. As a result, this electrode exhibited an extended linear range (0.5 - 50 μM), a lower detection limit (0.1 μM), good repeatability, and high selectivity.

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Electrocatalytic Response of Dopamine at Mannitol and Triton X-100 Modified Carbon Paste Electrode: A Cyclic Voltammetric Study

Cited by 45 publications

References 27 publications

Lamellar α-Zirconium Phosphate Nanoparticles Supported on N-Doped Graphene Nanosheets as Electrocatalysts for the Detection of Levofloxacin

Lamellar α-Zirconium Phosphate Nanoparticles Supported on N-Doped Graphene Nanosheets as Electrocatalysts for the Detection of Levofloxacin

Indirect Differential Pulse Voltammetric Determination of Fluoride Ions at Carbon Paste Electrode Modified with Porous and Electroactive Fe³⁺/Fe²⁺Based-Metal Organic Frameworks Type MIL-101(Fe)

Exploring the Impact of Structural and Physical Properties of Layered Molybdenum Disulfide on Electrochemical Characteristics and The Sensitive Response to Chloramphenicol Detection

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Electrocatalytic Response of Dopamine at Mannitol and Triton X-100 Modified Carbon Paste Electrode: A Cyclic Voltammetric Study

Cited by 45 publications

References 27 publications

Lamellar α-Zirconium Phosphate Nanoparticles Supported on N-Doped Graphene Nanosheets as Electrocatalysts for the Detection of Levofloxacin

Lamellar α-Zirconium Phosphate Nanoparticles Supported on N-Doped Graphene Nanosheets as Electrocatalysts for the Detection of Levofloxacin

Indirect Differential Pulse Voltammetric Determination of Fluoride Ions at Carbon Paste Electrode Modified with Porous and Electroactive Fe3+/Fe2+Based-Metal Organic Frameworks Type MIL-101(Fe)

Exploring the Impact of Structural and Physical Properties of Layered Molybdenum Disulfide on Electrochemical Characteristics and The Sensitive Response to Chloramphenicol Detection

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Indirect Differential Pulse Voltammetric Determination of Fluoride Ions at Carbon Paste Electrode Modified with Porous and Electroactive Fe³⁺/Fe²⁺Based-Metal Organic Frameworks Type MIL-101(Fe)