Electrochemical Detection of Dopamine at Fe3O4/SPEEK Modified Electrode

Ranku, Mogomotsi N.; Uwaya, Gloria Ebube; Fayemi, Omolola E.

doi:10.3390/molecules26175357

Cited by 9 publications

(2 citation statements)

References 53 publications

(59 reference statements)

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“…Equation of this linear relationship was as Ipa(μA) = 6.6826v 1/2 À 0.6391 (R 2 = 0.9983). result showed that the oxidation of ACOP on the 4HQ3CA/GC surface was diffusion-controlled process [49]. Also, the plot of the logarithm of anodic current against the logarithm of scan rate was as seen in Fig- ure 7D.…”

Section: Effect Of Potential Scan Rate On the Oxidation Peak Of Acopmentioning

confidence: 73%

Electrochemical Behavior and Ultrasensitive, Simple and Effective Voltammetric Determination of Acetaminophen Using Modified Glassy Carbon Electrode Based on 4‐Hydroxyquinoline‐3‐carboxylic Acid

Uzun

Calam

2022

Electroanalysis

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An electrochemical oxidation of acetaminophen (ACOP) has been successfully performed by using glassy carbon electrode covered with 4-hydroxyquinoline-3carboxylic acid (4HQ3CA) to reinforce electrode's feature. To characterize the modified electrode (4HQ3CA/ GC), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and Fourier transform infrared spectroscopy (FT-IR) techniques were used. The finding optimum conditions (supporting electrolyte, pH) and the electrochemical determination studies were performed with differential pulse voltammetry (DPV). It was decided that the supporting electrolyte medium suitable for ACOP determination was Britton-Robinson (BR) buffer and the effect of pH change on the oxidation peak of ACOP in this media was investigated. The effect of changing scan rate on the oxidation peak of ACOP was examined and this study showed that the oxidation process of ACOP on the 4HQ3CA/GC modified electrode surface was diffusion and adsorption controlled process. A wide concentration range from 0.0025 μM to 141 μM with a limit of detection (LOD) of 5.98 × 10 À 10 M (3 s/m) was obtained. This prepared sensor was carried out for the determination of ACOP in pharmaceutical sample.

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Section: Effect Of Potential Scan Rate On the Oxidation Peak Of Acopmentioning

confidence: 73%

Electrochemical Behavior and Ultrasensitive, Simple and Effective Voltammetric Determination of Acetaminophen Using Modified Glassy Carbon Electrode Based on 4‐Hydroxyquinoline‐3‐carboxylic Acid

Uzun

Calam

2022

Electroanalysis

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“…As a result, an ultrasensitive electrochemical sensor was formed in PBS solution, with a linear range between 0.07 and 800 μmol L −1 , and a LOD of 0.023 μmol L −1 . Other manuscripts also stand out in the electrochemical detection of DOP [ 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Visible Light Photoelectrochemical Sensor for Dopamine: Determination Using Iron Vanadate Modified Electrode

et al. 2022

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This study reports a facile approach for constructing low-cost and remarkable electroactivity iron vanadate (Fe-V-O) semiconductor material to be used as a photoelectrochemical sensor for dopamine detection. The structure and morphology of the iron vanadate obtained by the Successive Ionic Adsorption and Reaction process were critically characterized, and the photoelectrochemical characterization showed a high photoelectroactivity of the photoanode in visible light irradiation. Under best conditions, dopamine was detected by chronoamperometry at +0.35 V vs. Ag/AgCl, achieving two linear response ranges (between 1.21 and 30.32 μmol L−1, and between 30.32 and 72.77 μmol L−1). The limits of detection and quantification were 0.34 and 1.12 μmol L−1, respectively. Besides, the accuracy of the proposed electrode was assessed by determining dopamine in artificial cerebrospinal fluid, obtaining recovery values ranging from 98.7 to 102.4%. The selectivity was also evaluated by dopamine detection against several interferent species, demonstrating good precision and promising application for the proposed method. Furthermore, DFT-based electronic structure calculations were also conducted to help the interpretation. The dominant dopamine species were determined according to the experimental conditions, and their interaction with the iron vanadate photoanode was proposed. The improved light-induced DOP detection was likewise evaluated regarding the charge transfer process.

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Ionic liquid terpolymer/iron oxide/multiwalled carbon nanotube nanocomposite electrode for the voltammetric detection of dopamine in the presence of ascorbic acid

Resende,

Gross,

Dutra

et al. 2024

Chemical Engineering Science

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Electrochemical Detection of Dopamine at Fe3O4/SPEEK Modified Electrode

Cited by 9 publications

References 53 publications

Electrochemical Behavior and Ultrasensitive, Simple and Effective Voltammetric Determination of Acetaminophen Using Modified Glassy Carbon Electrode Based on 4‐Hydroxyquinoline‐3‐carboxylic Acid

Electrochemical Behavior and Ultrasensitive, Simple and Effective Voltammetric Determination of Acetaminophen Using Modified Glassy Carbon Electrode Based on 4‐Hydroxyquinoline‐3‐carboxylic Acid

Visible Light Photoelectrochemical Sensor for Dopamine: Determination Using Iron Vanadate Modified Electrode

Ionic liquid terpolymer/iron oxide/multiwalled carbon nanotube nanocomposite electrode for the voltammetric detection of dopamine in the presence of ascorbic acid

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