β-Cyclodextrin and multiwalled carbon nanotubes modified boron-doped diamond electrode for voltammetric assay of carbendazim and its corrosion inhibition behavior on stainless steel

Abstract

In this work, the use of square-wave adsorptive stripping voltammetry (SWAdSV) in combination with boron-doped diamond electrode modified with multiwalled carbon nanotubes (MWCNTs-BDDE) and β-cyclodextrin (β-CD, β-CD-MWCNTs-BDDE) for the determination of the fungicide carbendazim (Cbz) is described for the first time. Cbz oxidation response was observed in the Britton-Robinson buffer supporting electrolyte in a pH range from 2.3 to 6.0 in potential range from + 1.0 to + 1.3 V vs SCE. The SWAdSV peak current of Cbz oxidation response on β-CD-MWCNTs-BDDE with peak maxima close to + 1.2 V vs SCE at pH 4.0 was linear over the wide linear dynamic range of 6.72 × 10 . The obtained results demonstrated the viability of the proposed methodology for determination of Cbz in river water samples containing low concentrations of Cbz. Moreover, the effect of Cbz on the corrosion properties of an AISI type 316 L stainless steel used to fabricate farming equipment and tools was tested by means of the potentiodynamic method. The characterization and evaluation of the corrosion inhibition effect raised from the use of Cbz was performed using optical microscope.

Preparation of Functionalized Ayous Sawdust‐carbon Nanotubes Composite for the Electrochemical Determination of Carbendazim Pesticide

“…Peak currents and peak potentials were found to vary with pH (Figure 8A). As expected from previous works [44,47,76,79], the peak potentials decreased linearly as the pH increased (R 2 > The obtained slope of À 64 mV/pH suggests an equal number of electrons and protons involved in the electrochemical reaction [44,45,[80][81][82]. At alkaline pH values, the observed low currents resulted from the hydrolysis of Cbz.…”

“…By contrast, electrochemical methods offer certain advantages such as low cost of instrumentation, fast analysis and high sensitivity [42,43]. Recently, electrochemical methods based on various electrode modifiers have been reported for the electrochemical determination of carbendazim in various matrices [44][45][46][47][48][49][50][51][52][53][54][55][56][57]. To the best of our knowledge, sawdust-CNTs composite material is not yet reported as electrode modifier for Cbz determination.…”

A Sensitive Sensor Based on Single‐walled Carbon Nanotubes: Its Preparation, Characterization and Application in the Electrochemical Determination of Drug Clorsulon in Milk Samples

“…The choice of optimal supporting electrolyte is often a crucial point in electrochemical studies, since in many cases it can influence the studied reactions . Hence, in this work, two types of buffer solutions as supporting electrolytes were checked for their suitability in the determination of Clo , namely: Britton‐Robinson buffer solutions (pH range of 4.0–9.0) and phosphate buffer solutions (pH range of 6.8–8.0).…”

A new electrochemical DNA biosensor for determination of anti-cancer drug chlorambucil based on a polypyrrole/flower-like platinum/NiCo2O4/pencil graphite electrode

“…[5][6][7] Instead, individual analysis of these drugs can be performed in simple processes using electrochemical methods because of some unique properties such as rapid analysis, costeffectiveness, portability and simplicity. [8][9][10][11][12][13][14][15][16] Carbon paste, pencil graphite electrode, glassy carbon, screen-printed, etc. are the most regular electrodes for the electrochemical sensing of different analytes.…”