Elaboration of carbon paste electrode containing pentadentate Nickel-(II) Schiff base complex: Application to electrochemical oxidation of thiosulfate in alkaline medium

Belbacha, Walid; Naamoune, Farid; Bezzi, Hamza; Nora, Hellal; Zerroual, L.; Abdelkarim, Kahoul; brahim, Bouzarafa; Garcı́a, Marta Fernández; López, Daniel

doi:10.1016/j.arabjc.2020.05.007

Cited by 18 publications

(13 citation statements)

References 45 publications

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“…Many electrochemical sensors for the determination of IAA have been used [11][12][13][14][15][16]. Carbon paste electrodes (CPEs) have been applied in various electrochemistry applications because of their advantages over mercuryfree solid electrodes in terms of ease of preparation, speed, stable response, porous surface, renewability, low cost, low ohmic resistance, and no need for the internal solution [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

A Novel Electrochemical Sensor Based on Modified Carbon Paste Electrode with ZnO Nanorods for the Voltammetric Determination of Indole‐3‐acetic Acid in Plant Seed Extracts

2022

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Detection of indole-3-acetic acid (IAA), as a phytohormone, is important for precision farming, plant phenotyping, and crop management. Herein, IAA was detected in bean and wheat plant seeds extractions using zinc oxide nanorods/carbon paste electrode (ZnO NRs/ CPE). ZnO NRs/CPE showed excellent electrocatalytic activity, high sensitivity, and selectivity toward the oxidation of IAA. The linearity range was from 30. × 10 À 8 to 5.0 × 10 À 6 M (r 2 = 0.996, n = 10), with a detection limit of 1.7 × 10 À 8 M. Moreover, ZnO NRs/CPE exhibited high reproducibility, with a standard deviation of 1.0 % for six successive measurements of IAA.

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Section: Introductionmentioning

confidence: 99%

A Novel Electrochemical Sensor Based on Modified Carbon Paste Electrode with ZnO Nanorods for the Voltammetric Determination of Indole‐3‐acetic Acid in Plant Seed Extracts

2022

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Section: Introductionmentioning

confidence: 99%

“…In contrast, metal complexes not only possess easily regulated structures and high purity, but more importantly, their modified carbon paste electrodes show the advantages of easy fabrication, cheap cost, rapid surface renewal and reusability. [23][24][25] Of the Ag(I) d 10 metal ions, it is larger in size (1.05 Å) and exhibits a variety of coordination numbers ranging from 2 to 6, even 7 and 8, resulting in coordination geometries varying from linear to T-shaped, square-pyramidal, tetrahedral, trigonal-bipyramidal, and octahedral. [26][27][28][29] This behavior is because Ag(I) ions have no crystal field stabilization energy and can form more coordination bonds.…”

Section: Introductionmentioning

confidence: 99%

Two binuclear silver(I) complexes containing V‐shaped bis (benzimidazole) ligands: Syntheses, structures, and electrochemical sensing toward hydrogen peroxide

Sun

Dong

et al. 2022

Applied Organom Chemis

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Two new silver(I) complexes, formulated as [Ag2L12(isophthalate)]·(C2H5OH)5 (1), [Ag2L22(isophthalate)] (2) (L1 = 1,3‐bis[(N‐methyl‐benzimidazole)methylene]‐2‐aniline, L2 = 1,3‐bis[(N‐ethyl‐benzimidazole)methylene]‐2‐aniline), were synthesized by volatilization method and characterized by X‐ray crystallography, elemental analysis, IR and UV/Vis spectroscopy. The crystal analysis showed that although complexes 1 and 2 were both binuclear, their Ag(I) centers exhibited different coordination geometric structures: four‐coordinated distorted tetrahedron in complex 1, whereas three‐coordinated planar triangle in complex 2. The electrochemical sensing performances of carbon paste electrode modified with Ag(I) complexes (CPE‐1 for complex 1 and CPE‐2 for complex 2) toward H2O2 were evaluated by cyclic voltammogram and chronoamperometry in 0.2 M phosphate‐buffered saline (PBS, pH = 6.0) at −0.2 V. The results show that both CPE‐1 and CPE‐2 showed excellent electrocatalytic activity, quick response time (≤5 s) and high selectivity toward H2O2. The linear response range was from 5.0 × 10−7 to 4.0 × 10−3 M. The CPE‐1 exhibits better sensitivity and limit of detection (LOD) than CPE‐2, which is related to the coordination environment of Ag(I) ions. Sensors based on Ag(I) complexes have great application prospects in the field of electrochemical sensing.

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“…Carbon paste electrodes (CPEs) are promising electrochemical sensors with distinct physicochemical and electrochemical properties [1]. CPEs are commonly popular due to their very attractive properties such as non-toxic nature, biocompatibility, chemical inertness, electrochemical behavior stability, very low background current, easy preparation, low ohmic resistance, robustness, absence of an internal solution, surface regeneration, fast response time, long operational lifetime, and modification ability [2][3][4]. CPEs are especially convenient to develop electrode materials modified with various compounds hence giving the electrode specific pre-determined characteristics [5].…”

Section: Introductionmentioning

confidence: 99%

“…Even though some attention has been paid to the potentiometric monitoring of thorium ions, only a few reports are available in the literature and thus the need for more ISEs is notable [29][30][31][32][33][34]. A number of ionophores have been introduced for the fabrication of thorium ISEs including 2-(diphenyl phosphorothioyl)-N′,N′-diphenyl acetamide [29], calix [4]arenes [30,31], dibutyl(8-hydroxyquinolin-2-yl) methylphosphonate [27], Aliquat-336 [32], dithio-tetraaza macrocyclic compound [33], morpholine derivative [34], and thorium oxinate [35].…”

Section: Introductionmentioning

confidence: 99%

Direct analysis of thorium(IV) ions concentration in water samples using a new carbon paste electrode

Akl

Ali

2022

J IRAN CHEM SOC

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The radioactive and hazardous nature of thorium demands the fabrication of efficient electrodes for its sensitive and selective monitoring in aqueous environments. The present paper reports the construction and characterization of a new carbon paste electrode (CPE) chemically modified by octyl phenyl acid phosphate (OPAP) as a selective recognition agent for the potentiometric assay of thorium(IV) ions. Improved sensitivity, electrical conductivity, and selectivity were achieved by incorporating oxidized multi-walled carbon nanotubes (o-MWCNTs) into the carbon paste composition. The electrochemical performance of the developed electrode was evaluated regarding the paste ingredients, response time, and working pH range. The standard CPE potentials, E°, were determined at various temperatures and the isothermal temperature coefficient was calculated. The optimized CPE showed a Nernstian slope of 14.65 ± 0.38 mV decade−1 over the concentration range of 4.82 × 10–7–1.00 × 10–1 mol L−1. The electrode possessed a short response time (9 s), independence of the solution pH over the range of 2.5–5.5, and a relatively long operational lifetime (˃ 3 months). The selectivity coefficients indicated the good discrimination ability of the developed CPE towards thorium(IV) ion compared to various common ions. Aiming to judge the practical utility of the developed CPE, it was successfully used for the potentiometric analysis of thorium(IV) ions in various real aqueous matrices with sensible results.

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Elaboration of carbon paste electrode containing pentadentate Nickel-(II) Schiff base complex: Application to electrochemical oxidation of thiosulfate in alkaline medium

Cited by 18 publications

References 45 publications

A Novel Electrochemical Sensor Based on Modified Carbon Paste Electrode with ZnO Nanorods for the Voltammetric Determination of Indole‐3‐acetic Acid in Plant Seed Extracts

A Novel Electrochemical Sensor Based on Modified Carbon Paste Electrode with ZnO Nanorods for the Voltammetric Determination of Indole‐3‐acetic Acid in Plant Seed Extracts

Two binuclear silver(I) complexes containing V‐shaped bis (benzimidazole) ligands: Syntheses, structures, and electrochemical sensing toward hydrogen peroxide

Direct analysis of thorium(IV) ions concentration in water samples using a new carbon paste electrode

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