Bismuth particles Nafion covered boron-doped diamond electrode for simultaneous and individual voltammetric assays of paracetamol and caffeine

Sadok, Ilona; Tyszczuk‐Rotko, Katarzyna; Nosal‐Wiercińska, Agnieszka

doi:10.1016/j.snb.2016.05.087

Cited by 50 publications

(27 citation statements)

References 31 publications

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“…Recently, the boron-doped diamond (BDD) variant has gained great popularity. To determine caffeine levels both bare boron-doped diamond electrode (BDDE) (Švorc et al 2012), cathodically-pretreated BDDE and anodically-pretreated BDDE (Lourencão et al 2009), Nafion-modified BDDE or a non-toxic bismuth particles Nafion covered boron-doped diamond electrode (Sadok et al 2016) were applied.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive stripping voltammetric method for the determination of caffeine at integrated three-electrode screen-printed sensor with carbon/carbon nanofibers working electrode

2019

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A commercially available screen-printed carbon electrode coated with carbon nanofibers (SPCE/CNFs) and differentialpulse adsorptive stripping voltammetry (DPAdSV) were used to determination of caffeine. The process of electrochemical oxidation of caffeine in 0.1 mol L −1 sulfuric acid at the SPCE/CNFs surface was investigated by cyclic voltammetry (CV). The effect of the supporting electrolyte type, pH and concentration, time and potential of accumulation, amplitude and scan rate were studied to select the optimum experimental conditions. Under the optimized conditions, the well-defined caffeine peak was observed at 1.25 V (vs. screen-printed silver reference electrode) in 0.1 mol L −1 sulfuric acid. The caffeine was accumulated at − 0.8 V for 60 s. The oxidation peak current was proportional to concentration of caffeine from 2.0 × 10 −7 to 1.0 × 10 −6 mol L −1 with detection limit of 5.6 × 10 −8 mol L −1. The presented method has been successfully applied for the determination of caffeine in beverage samples. Keywords Integrated three-electrode screen-printed sensor with carbon/carbon nanofibers working electrode • Adsorptioncontrolled process • Diffusion-controlled process • Voltammetric determination of caffeine • Beverage samples This article belongs to S.I. ISSHAC10, but it reach the press at the time the special issue was published.

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Section: Introductionmentioning

confidence: 99%

Adsorptive stripping voltammetric method for the determination of caffeine at integrated three-electrode screen-printed sensor with carbon/carbon nanofibers working electrode

2019

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“…Sadok and coauthors developed a DPV methodology for PAR and CAF . The authors used a 0.1 mol L −1 H 2 SO 4 solution containing metal ions on a BDD electrode modified with bismuth particles Nafion® covered to improve the oxidation peak currents of PAR and CAF.…”

Section: Electroanalysis Of Pharmaceuticalsmentioning

confidence: 99%

Electroanalysis of Pharmaceuticals on Boron‐Doped Diamond Electrodes: A Review

et al. 2019

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diamond (BDD) electrodes possess outstanding physical, chemical, and electronic properties and have been successfully, yet in a limited way, explored in the electroanalysis of substances with therapeutic action (analgesics, antipyretics, antibiotics, anti-inflammatories, antihypertensives, antidepressants, vitamins, and others) in diverse milieus (pharmaceutical formulations, urine, serum, whole blood, surface waters, seawaters, groundwater, wastewaters, etc.). Therefore, in this Review, a broad overview of the available scientific information on recent progress and achievements of the application of bare or modified BDD electrodes to the bioanalytical and environmental detection of pharmaceutical compounds is presented. The main parameters, for example boron concentration, applied operational conditions during pretreatment, chemical and physical structure, and other influential factors on the electroanalytical BDD electrodes performance, are discussed.[a] Dr.

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“…[15][16][17] Diamond electrodes can be modified by metal nanoparticles enhancing its sensitivity towards various analytes compared to the unmodified electrode. [7,[18][19][20][21] Of note is the resistance of diamond to electrocorrosion, a fact which make it attractive especially in the field of fuel cell. [22][23][24] Pt is one of the most effective electrocatalysts and used widely; nevertheless, the high cost as well as its tendency to be poisoned by the reaction intermediates during the ethanol electrooxidation can be prohibitive for future use.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Mass Activity and Stability of Bimetallic Pd‐Ni Nanoparticles on Boron‐Doped Diamond for Direct Ethanol Fuel Cell Applications

et al. 2017

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In this work, electrochemical deposition of Pd and bimetallic Pd−Ni nanoparticles on an oxygen‐terminated boron‐doped diamond (BDD) substrate is described for use as an electrocatalyst in a direct ethanol fuel cell. A potentiostatic two‐step electrochemical method involving the electrodeposition of Ni nanoparticles on BDD followed by mono‐dispersed Pd nanoparticles was used for the fabrication of a Pd−Ni/BDD electrode. The electrocatalytic activity of the bimetallic Pd−Ni nanoparticles was evaluated in an alkaline solution containing ethanol and compared to that of the Pd nanoparticles alone. The bimetallic Pd−Ni nanoparticles showed 2.4 times higher mass activity than similar systems in the literature as well as stability when operated in alkaline media. The higher electrochemical response towards the electrooxidation of ethanol observed for the bimetallic electrocatalysts was attributed to the synergistic effects of the electron interaction at the interface of the two metals. Chronopotentiometric measurements revealed that Pd is more stable when anchored to the Ni nanoparticles. The optimised loading of mono‐dispersed Pd on a foreign Ni metal as nanoparticles plays a crucial role in achieving a high mass (3.63×106 mA/g) and specific (10.53 mA/cm2) electrocatalytic activity of Pd towards ethanol electrooxidation in alkaline media.

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Bismuth particles Nafion covered boron-doped diamond electrode for simultaneous and individual voltammetric assays of paracetamol and caffeine

Cited by 50 publications

References 31 publications

Adsorptive stripping voltammetric method for the determination of caffeine at integrated three-electrode screen-printed sensor with carbon/carbon nanofibers working electrode

Adsorptive stripping voltammetric method for the determination of caffeine at integrated three-electrode screen-printed sensor with carbon/carbon nanofibers working electrode

Electroanalysis of Pharmaceuticals on Boron‐Doped Diamond Electrodes: A Review

Enhanced Mass Activity and Stability of Bimetallic Pd‐Ni Nanoparticles on Boron‐Doped Diamond for Direct Ethanol Fuel Cell Applications

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