Antipassivating Electrochemical Process of Glassy Carbon Electrode (GCE) Dedicated to the Oxidation of Nitrophenol Compounds

Pontié, Maxime; Thouand, Gérald; Nardi, Frédéric de; Tapsoba, Issa; Lherbette, S.

doi:10.1002/elan.201100082

Cited by 39 publications

(17 citation statements)

References 35 publications

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“…This value suggests a four electron transfer mechanism for the electrochemical reduction of p ‐nitrophenol on the surface of the CoO x NS modified GC electrode. This result is in good agreement with mechanism has been already reported for four electrons p ‐nitrophenol electrochemicalreduction 65, 10.…”

Section: Resultssupporting

confidence: 93%

Electrodeposition of Cobalt Oxide Nanostructure on the Glassy Carbon Electrode for Electrocatalytic Determination of para‐Nitrophenol

et al. 2014

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Cobalt oxide nanostructure (CoOxNS) deposited on the glassy carbon (GC) electrode surface is proposed as a novel electrocatalytic system for the reduction of para‐Nitrophenol. Cyclic voltammetry, electrochemical impedance spectroscopy, atomic force microscopy and scanning electron microscopy were used for characterization of deposited CoOxNS. CoOxNS deposited by cycling at positive potentials (0 to +1.3 V) show less charge‐transfer resistance (Rct) and more catalytic activity for the electroreduction of p‐nitrophenol compared to those CoOxNS obtained by scanning the applied potential throughout a negative V range. The GC/CoOxNS electrode showed good electrocatalytic activity toward the reduction of p‐nitrophenol at different pH values.

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Section: Resultssupporting

confidence: 93%

Electrodeposition of Cobalt Oxide Nanostructure on the Glassy Carbon Electrode for Electrocatalytic Determination of para‐Nitrophenol

et al. 2014

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“…Therefore, these optimum values are being used in the rest of the work. One can note that the peak current increase upon the increase of the concentration according to literature [8]. The representation of peak current intensity vs.…”

Section: Optimum Conditions For Analytical Methodsmentioning

confidence: 64%

Electrochemical Sensors Based on Modification of Carbon Fiber Microelectrode by Nickel Phthalocyanine Polymer for 3-Methyl-4-Nitrophenol Analysis in Water

Bako¹,

Kabore²,

Tapsoba³

2017

MSA

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Abstract3-methyl-4-nitrophenol (MNP) is the main by-product of the organophosphate insecticide fenitrothion (FT), used in locust control. MNP is highly toxic because it is an endocrine disruptor and then may cause adverse in the biological systems. Then, it is necessary to develop analytical methods for determination of this pollutant in the environment. In this sense, we reported herein the development of an electrochemical sensor for the detection of 3-methyl-4-nitrophenol (MNP), one of the metabolites of fenitrothion (FT), by using naked and modified carbon fiber microelectrode (CFME) by nickel tetrasulfonated phthalocyanine polymer (CFME/p-NiTSPc). The voltammogram showed that MNP presents one irreversible anodic peak corresponding to the oxidation of the phenol group at 0.9 V vs Ag/AgCl. The effect of pH of the buffer on the peak current and SWV parameters such as frequency, scan increment and pulse amplitude were investigated in order to optimize the electrochemical response of the sensor. The obtained results lead to the following optimum value: pH = 6; frequency = 25 Hz, pulse amplitude = 50 mV, scan increment = 10 mV. With these optimum values, the calibration curves show that the peak current varied linearly upon MNP concentration leading to a limit of detection (LoD) for naked CFME close to 3 µg/L whereas for CFME modified by p-NiTSPc, it reaches 0.75 µg/L. This results prove that the presence of p-NiTSPc increasing the sensitivity of the sensor could be used to monitor 3-methyl-4-nitro-phenol residue in real matrix.

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“…On other hand, the presence of PNP is confirmed by the increase of the background current at + 0.7 V versus Ag/AgCl (KCl 0.1 mol L -1 ). This increase could be attributed to the beginning of oxidation of the phenol group of PNP as described in the literature (Pontié et al, 2011).…”

Section: Monitoring Of the Degradation Of Mp By Square Wave Voltammetmentioning

confidence: 59%

Electrochemical monitoring of methyl parathion degradation based on carbon fiber microelectrodes (CFME)

Tapsoba¹,

Kabore²

2012

Int. J. Bio. Chem. Sci

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The electrochemical degradation of methyl parathion (MP) has been investigated by using carbon fiber microelectrodes (CFME) as working electrode and acetate buffer pH 5.2 as supporting electrolyte. pnitrophenol (PNP) and p-aminophenol (PAP) recognized as by-products of MP degradation process have been detected and identified in real time using square wave voltammetry. This study shows for the first time that CFME could be used to follow MP degradation in real time and to identify its stables metabolites.

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Antipassivating Electrochemical Process of Glassy Carbon Electrode (GCE) Dedicated to the Oxidation of Nitrophenol Compounds

Cited by 39 publications

References 35 publications

Electrodeposition of Cobalt Oxide Nanostructure on the Glassy Carbon Electrode for Electrocatalytic Determination of para‐Nitrophenol

Electrodeposition of Cobalt Oxide Nanostructure on the Glassy Carbon Electrode for Electrocatalytic Determination of para‐Nitrophenol

Electrochemical Sensors Based on Modification of Carbon Fiber Microelectrode by Nickel Phthalocyanine Polymer for 3-Methyl-4-Nitrophenol Analysis in Water

Electrochemical monitoring of methyl parathion degradation based on carbon fiber microelectrodes (CFME)

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