Electro analysis of 3-Aminopyridine at poly Eriochrome black T modified glassy carbon electrode and its oxidation mechanism

Konnur, Santosh B.; Naik, Pooja S.; Naik, Prasanna B.; Nandibewoor, Sharanappa T.

doi:10.1016/j.cdc.2019.100336

Cited by 6 publications

(7 citation statements)

References 17 publications

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“…Similar to this, after F-MWCNT/GCE was modified with poly(phenylalanine), the redox peak currents increased further, and the peak-to-peak separation decreased because of the synergistic effect of F-MWCNT and poly(phenylalanine) for the electron transfer between [Fe(CN)6] 3-/4and poly (phenylalanine)/F-MWCNT/GCE. Using Randles-Ševčik equation, the electroactive surface areas of the unmodified GCE and modified GCE were estimated [27,42]:…”

Section: Electrochemical Properties Of Bare and Modified Gcementioning

confidence: 99%

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Electrochemical determination of vitamin B6 in pharmaceutical and energy drink samples

Tesfaye¹,

Tessema²,

Negash³

2023

J. Electrochem. Sci. Eng.

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A simple and low-cost electrochemical sensor based on poly(phenylalanine) and functionnalized multi-walled carbon nanotubes (F-MWCNTs) modified glassy carbon electrode (GCE) was developed for the determination of vitamin B6 (VB6). The surface morphology of modified glassy carbon electrodes was investigated with scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The electrocatalytic activities of the bare and modified electrodes were investigated in the presence of ferri-ferrocyanide redox couple using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The exchange current density (jo = 2462 µA cm-2) and electron transfer rate constant (ko = 0.002 cm s−1) were calculated using 5 mM K3[Fe(CN)6]. The electrochemical activity of poly(phenylalanine)/F-MWCNT/GCE towards VB6 oxidation was investigated using CV. Parameters including the number of electrons transferred (n = 2), number of protons transferred (H+ = 2), electron transfer coefficient (α = 0.51) and surface concentration of VB6 (G = 0.24 nmol cm−2) were calculated. At the optimal experimental conditions, the oxidation peak current of VB6 measured by square wave voltammetry (SWV) was found proportional to its concentration in two linear ranges of 0.5 to 20 µM and 20 to 200 µM with a low detection limit (LOD) of 0.038 µM and limit of quantification (LOQ) of 0.125 µM. Finally, the sensor was successfully used to determine VB6 in soft drink and pharmaceutical formulation samples.

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Section: Electrochemical Properties Of Bare and Modified Gcementioning

confidence: 99%

“…Different amino acids have been used to modify electrode surfaces for the electrochemical analysis of various analytes [27][28][29][30][31]. Among the major amino acids, phenylalanine (Figure 1B) is easily electropolymerized on the electrode surface to form poly(phenylalanine) [32].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical determination of vitamin B6 in pharmaceutical and energy drink samples

Tesfaye¹,

Tessema²,

Negash³

2023

J. Electrochem. Sci. Eng.

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“…On the other hand, in analytical research, qualities such as low cost, ease of execution, responsiveness, reproducibility, consistency and rapid determination of drug components are of paramount importance, as are quality control and medical laboratories. 52…”

Section: Introductionmentioning

confidence: 99%

“…However, improving analytical methods in terms of stability, sensitivity, selectivity, and reproducibility remains fundamental to human health and safety. 12,52 In particular, voltammetry has been described as highly sensitive, with inexpensive equipment and simple analytical procedures. 53…”

Section: Introductionmentioning

confidence: 99%

Sensitive and selective determination of paracetamol in antipyretic children's syrup with a polyglycine modified glassy carbon electrode

İslamoğlu,

Mülazımoğlu,

Demir Mülazımoğlu

2023

Anal. Methods

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“…18,26 To date, different poly (amino acids) have been reported for the electrochemical determination of various analytes. 18,21,27,28 Phenylalanine (Fig. 1B) is among the common amino acids that can easily be electropolymerized on the electrode surface to form poly (phenylalanine).…”

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confidence: 99%

Reduced Graphene Oxide and Poly (phenylalanine) Composite Modified Electrode for the Electrochemical Determination of Vanillin

Tesfaye¹,

Negash²,

Tessema³

2022

J. Electrochem. Soc.

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A simple, low-cost, and stable electrochemical sensor for vanillin is reported based on a glassy carbon electrode (GCE) modified with poly (phenylalanine) and electrochemically reduced graphene oxide (ERGO) composite (poly (phenylalanine)/ERGO/GCE). The surface structure of the bare and modified electrodes was characterized by Fourier transform infrared and scanning electron microscopy. The electrochemical behavior of vanillin at phenylalanine)/ERGO/GCE) was also studied by CV. Poly (phenylalanine)/ERGO/GCE) exhibited high electrocatalytic activity for the electrochemical oxidation of vanillin due to the synergetic effects of poly (phenylalanine) and ERGO. From linear sweep voltammetry study, the electrode reaction of vanillin is adsorption-controlled process. Furthermore, several electrochemical parameters such as number of electrons transferred (n=2), number of protons transferred (H+ = 2), electron transfer coefficient (α = 0.66) and surface concentration of vanillin (Ґ = 0.32 nmol cm−2) were calculated. SWV was used for quantitative determination of vanillin at phenylalanine)/ERGO/GCE). Under optimum conditions, the oxidation peak current of vanillin increased linearly with its concentration in the range 0.25–120 µM with a low detection limit of 0.025 µM. The developed sensor was successfully applied for the determination of vanillin in food and soft drink samples.

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Electro analysis of 3-Aminopyridine at poly Eriochrome black T modified glassy carbon electrode and its oxidation mechanism

Cited by 6 publications

References 17 publications

Electrochemical determination of vitamin B6 in pharmaceutical and energy drink samples

Electrochemical determination of vitamin B6 in pharmaceutical and energy drink samples

Sensitive and selective determination of paracetamol in antipyretic children's syrup with a polyglycine modified glassy carbon electrode

Reduced Graphene Oxide and Poly (phenylalanine) Composite Modified Electrode for the Electrochemical Determination of Vanillin

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