Electrocatalytic reactions on carbon fibre electrodes modified by hemine II. Electro-oxidation of hydrazine

Antoniadou, S.; Jannakoudakis, A.D.; Θεοδωρίδου, Ε.

doi:10.1016/0379-6779(89)90652-8

Cited by 138 publications

(55 citation statements)

References 19 publications

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“…From the plot of I p versus v 1/2 , the number of electrons (n) involved in the overall reaction was obtained according to the following equation [37]:…”

Section: Electrochemicalmentioning

confidence: 99%

The Electrochemical Behavior of Au/AuNPs/PNA/ZnSe-QD/ACA Electrode Towards CySH Oxidation

et al. 2015

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This work describes the electrochemical behavior of azodicarboxamide (ACA) film immobilized on the surface of penicillamine (PNA)/ZnSe-quantum dot (ZnSe-QD) gold nanoparticle (AuNPs) Au electrode. Electrocatalytic activity of modified electrode toward the oxidation of cysteine (CySH) was investigated. The surface structure and composition of the sensor were characterized by scanning electron microscopy (SEM). Oxidation of CySH on the surface of modified electrode was investigated with cyclic voltammetry, electrochemical impedance spectroscopy (EIS), hydrodynamic voltammetry and chronoamperometry methods. The results show that the PNA/ZnSe-QD/ACA film displays excellent electrochemical catalytic activities towards CySH oxidation. The modified electrode shows reproducible behavior and high level of stability during the electrochemical experiments. Also it has short response time, low detection limit, high sensitivity and low operation potential, which can be used as an amperometric sensor for monitoring of CySH. The proposed modified electrode was successfully used for determination of CySH in real sample such as human serum.

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“…From the plot of I p versus v 1/2 , the number of electrons (n) involved in the overall reaction was obtained according to the following equation [37]:…”

Section: Electrochemicalmentioning

confidence: 99%

The Electrochemical Behavior of Au/AuNPs/PNA/ZnSe-QD/ACA Electrode Towards CySH Oxidation

et al. 2015

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“…Since the direct reduction of O2 at a plain GC electrode shows only a residual current, the transient current seems to be largely due to the catalytic reduction of O2 by the cobaloxime complex used. According to the integrated Cottrell equation, 34,35 Eq. (4), the number of electrons involved in O2 reduction can also be estimated from the slope of the plot of Q vs. t 1/2 which resulted from chronoamperometric experiments carried out on cobaloxime complex/GC electrode (Fig.…”

Section: Catalytic Reduction Of O2 At the Surface Of Modified Electrodementioning

confidence: 99%

Electrocatalytic Reduction of Dioxygen on a Glassy Carbon Electrode Modified with Adsorbed Cobaloxime Complex

Salimi

Ghadermazi

2001

ANAL. SCI.

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“…4A) and the following Eq. (2), 31 the number of electrons participating in the redox process between modifier and ascorbic acid (n) was calculated.…”

Section: Effect Of Scan Ratementioning

confidence: 99%

Electrochemical Behavior of Ascorbic Acid at a 2,2'-[3,6-Dioxa-1,8-octanediylbis(nitriloethylidyne)]-bis-hydroquinone Carbon Paste Electrode

et al. 2008

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Electrocatalytic oxidation of ascorbic acid (AA) at a carbon paste electrode, chemically modified 2,2¢-[3,6-dioxa-1,8-octanediylbis(nitriloethylidyne)]-bis-hydroquinone, was thoroughly investigated. The results of cyclic voltammetry, double potential-step chronoamperometry, linear sweep voltammetry and differential pulse voltammetry (DPV) studies were used for the prediction of the mechanism of electrochemical oxidation of AA mediated with 2,2¢-[3,6-dioxa-1,8-octanediylbis(nitriloethylidyne)]-bis-hydroquinone at the surface of the modified electrode. The diffusion coefficient (D = 2.45 ¥ 10 -5 cm 2 s -1 ) and the kinetic parameters such as the electron transfer coefficient (a = 0.34) were also determined. The results of DPV using the 2,2¢-[3,6-dioxa-1,8-octanediylbis(nitriloethylidyne)]-bis-hydroquinonemodified electrode were applied in a highly sensitive determination of AA in drug samples. A linear range of 3.0 ¥ 10 -6 -1.2 ¥ 10 -4 M and the detection limit (3s) 3.8 ¥ 10 -7 M were obtained for DPV determination of AA in buffered pH 7.00 solutions (0.1 M phosphate buffer).

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Electrocatalytic reactions on carbon fibre electrodes modified by hemine II. Electro-oxidation of hydrazine

Cited by 138 publications

References 19 publications

The Electrochemical Behavior of Au/AuNPs/PNA/ZnSe-QD/ACA Electrode Towards CySH Oxidation

The Electrochemical Behavior of Au/AuNPs/PNA/ZnSe-QD/ACA Electrode Towards CySH Oxidation

Electrocatalytic Reduction of Dioxygen on a Glassy Carbon Electrode Modified with Adsorbed Cobaloxime Complex

Electrochemical Behavior of Ascorbic Acid at a 2,2'-[3,6-Dioxa-1,8-octanediylbis(nitriloethylidyne)]-bis-hydroquinone Carbon Paste Electrode

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