Ionic liquid/carbon nanofibers/bismuth particles novel hybrid nanocomposite for voltammetric sensing of heavy metals

Oularbi, Larbi; Turmine, Mireille; Salih, Fatima Ezzahra; Rhazi, Mama El

doi:10.1016/j.jece.2020.103774

Cited by 59 publications

(25 citation statements)

References 46 publications

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“…As for the anions formed, the electrostatic repulsion is an obstacle for their adsorption to the surface of the electrodes. Previous work [24][25][26][27] has shown similar results.…”

Section: Study Of the Effect Of Ph Of Mediumsupporting

confidence: 70%

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Blaise

Valery

Maallah

et al. 2022

Journal of Analytical Methods in Chemistry

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Calcinated and acidified clay modified carbon graphite electrode was deployed in the simultaneous evaluation of traces of Pb2+ and Cd2+ in solution. After 5 minutes of accumulation in the circuit, the sensitivity of the electrode was evaluated in a solution of Na2SO4 (0.1 M) by square wave voltammetry on the one hand with Pb (II) and on the other hand with Cd (II). Several experimental conditions such as the composition of the carbon clay paste, the effect of preconcentration time, the sweeping speed, concentration effect, media pH, and interference ionic response to the electrochemical response of the working electrode were examined. It was observed that, after 5 minutes of preconcentration, detection limits of 0.15513 μmol·L−1 and 0.24227 μmol·L−1 were obtained for Pb2+ and Cd2+ in the electrolyte solution and 0.08438 μmol·L−1 and 0.46522 μmol·L−1, respectively, when tap water was used. The detection was effective by square wave voltammetry with a more intense current density with respect to lead.

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“…As for the anions formed, the electrostatic repulsion is an obstacle for their adsorption to the surface of the electrodes. Previous work [24][25][26][27] has shown similar results.…”

Section: Study Of the Effect Of Ph Of Mediumsupporting

confidence: 70%

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Blaise

Valery

Maallah

et al. 2022

Journal of Analytical Methods in Chemistry

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“…As can be seen, the CV curves of the three electrodes show a pair of redox peaks corresponding to the reversible reaction of [Fe(CN) 6 ] 3/4-. The bare CPE has a small redox peak and a high peak-to-peak potential separation (ΔEp) of about 340 mV due to the relatively small surface area and low electron transfer (Salih et al, 2017a;Salih et al, 2017b;Salih et al, 2018;Oularbi et al, 2020). For the Cu(OH) 2 -Cu 2 O/PPy/CPE, the current densities of the anodic and cathodic peaks increased and the ΔEp value was reduced to 160 mV compared to those of the improvement of the electronic transfer at the electrode surface as suggested by many authors (Fard et al, 2017;Kathiresan et al, 2021).…”

Section: Electrodes Preparation and Characterizationmentioning

confidence: 99%

Designing New Material Based on Functionalized Multi-Walled Carbon Nanotubes and Cu(OH)2–Cu2O/Polypyrrole Catalyst for Ethanol Oxidation in Alkaline Medium

et al. 2022

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In this work, copper(II) hydroxide (Cu(OH)2) and copper oxide (Cu2O) nanostructures are deposited on functionalized multi-walled carbon nanotubes/polypyrrole to report an efficient electrocatalyst for ethanol oxidation in alkaline medium. In the first step, the deposition of functionalized multi-walled nanotubes of carbon (F-MWCNTs) on the electrode surface was carried out using drop casting mode followed by the electrodeposition of polypyrrole (PPy) and copper nanoparticles (Cu-Nps) using galvanostatic mode. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were performed in order to study the morphology and the structure of the elaborated catalysts. Electrochemical characterization conducted by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) revealed that the introduction of functionalized multi-walled carbon nanotubes enhances the electric properties of the nanocomposites and offers a large active surface area. The prepared electrocatalyst was then tested in a solution of 0.1 M NaOH containing 0.2 M of ethanol showing high performance (7 mA cm−2 at 0.85 V vs Ag/AgCl) and good stability (over 1800 s) toward ethanol oxidation.

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“…[43][44][45] In addition, adjustment of the electro-chemical sensor, which use the conductive mediators like nanomaterials, ionic liquid (IL), and conductive polymers can cause assessing the biological specimens and medicines at the nanomolar level. [46][47][48]…”

Section: Electrochemical Sensing Modified Electrodesmentioning

confidence: 99%

Recent developments in electrochemical sensors for detecting hydrazine with different modified electrodes

et al. 2020

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Ionic liquid/carbon nanofibers/bismuth particles novel hybrid nanocomposite for voltammetric sensing of heavy metals

Cited by 59 publications

References 46 publications

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Designing New Material Based on Functionalized Multi-Walled Carbon Nanotubes and Cu(OH)2–Cu2O/Polypyrrole Catalyst for Ethanol Oxidation in Alkaline Medium

Recent developments in electrochemical sensors for detecting hydrazine with different modified electrodes

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