The Theoretical Description for Magnesium Chlorate Electrochemical Determination on a Magnezone-XC Modified Electrode

In this work the determination of ascorbic acid (AA) at glassy carbon electrode (GCE) modified with a perforated film produced by reduction of diazonium generated in situ from p-phenylenediamine (PD) is reported. Holes were intentionally created in the modifier film by stripping a pre-deposited gold nanoparticles. The modified electrodes were electrochemically characterized by common redox probes: hydroquinone, ferrocyanide and hexamineruthenium(III). The cyclic voltammetric and amperometric response of AA using the modified electrodes was compared with that of bare GCE. The bare GCE showed a linear response to AA in the concentration range of 5 mM to 45 mM with detection limit of 1.656 mM and the modified GCE showed a linear response to AA in the concentration range of 5 ?M to 45 ?M with detection limit of 0.123 ?M. The effect of potential intereferents on amperometric signal of AA at the modified GCE was examined and found to be minimal. The inter-electrode reproducibility, stability, and accuracy were determined. The modified electrode showed excellent inter-electrode reproducibility, accuracy and stability. The modified electrode reported is a promising candidate for use in electroanalysis of AA.

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Application of Single-Walled Carbon Nanotubes/Au Nanosol Modified Electrode for the Electrochemical Determination of Esculetin in Cortex Fraxini

International Journal of Electrochemical Science ◽

10.20964/2016.07.59 ◽

2016 ◽

pp. 5427-5440

Author(s):

Yuanyuan Yao ◽

Keyword(s):

Carbon Nanotubes ◽

Modified Electrode ◽

Single Walled Carbon Nanotubes ◽

Electrochemical Determination ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

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Theoretical Description for Chlorantraniliprole Electrochemical Determination, Assisted by Squaraine Dye Nano Ag2O2 Composite

Biointerface Research in Applied Chemistry ◽

10.33263/briac112.92789284 ◽

2020 ◽

Vol 11 (2) ◽

pp. 9278-9284

Keyword(s):

Mathematical Model ◽

Reaction Mechanism ◽

Bifurcation Analysis ◽

Electrochemical Determination ◽

Theoretical Description ◽

The Other ◽

Linear Stability Theory ◽

Oxide Nanoparticles ◽

Monotonic Instability ◽

Squaraine Dye

The theoretical description for the chlorantraniliprole electrochemical determination, assisted by the hybrid composite of squaraine dye with Ag2O2 nanoparticles, has been described. The correspondent reaction mechanism has been proposed, and the correspondent mathematical model has been developed and analyzed by means of linear stability theory and bifurcation analysis. It has been shown that the chlorantraniliprole electrochemical anodic determination on high potential may be efficiently provided by silver (I, III) oxide nanoparticles, stabilized by the squaraine dye. On the other hand, the oscillatory and monotonic instability is also possible, being caused by DEL influences of the electrochemical stage.

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