Sensitive amperometric pyridoxine sensor based on self‐assembled Prussian blue nanoparticle‐modified poly(<i>o</i>‐phenylenediamine)/glassy carbon electrode

In this study; a sensitive, selective, and simple electrochemical sensor was developed to determine low concentration pyridoxine (Py) using a phosphorus‐doped pencil graphite electrode (P‐doped/PGE). Electrode modification was implemented using the chronoamperometry method at +2.0 V constant potential and 100 seconds in 0.1 mol L−1 H3PO4 supporting electrolyte solution. The characterization processes of the P‐doped/PGE were carried out using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), X‐ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), energy‐dispersive X‐ray spectroscopy (EDX), and atomic force microscope (AFM) methods. In the concentration study, using the differential pulse voltammetry (DPV) method, a linear calibration plot was acquired in the concentration range of 0.5 to 300 μmol L−1 Py. The limit of quantification (LOQ) and limit of detection (LOD) of the developed method were calculated as 0.219 μmol L−1 and 0.0656 μmol L−1, respectively. Detection of Py has been successfully performed on the P‐doped/PGE in the beverage samples. As a result, the method developed has been shown to have fast, low cost, and simple for the sensitive and selective detection of Py as an effective electrode.

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“…This linearity indicates that the reaction taking place is adsorption controlled [42].…”

Section: Resultsmentioning

confidence: 82%

Cost‐effective and Facile Production of a Phosphorus‐doped Graphite Electrode for the Electrochemical Determination of Pyridoxine

2021

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“…Nowadays, electrochemical methods for detection are extremely promising due to their fast response, low cost and low detection limit [21]. There have been a variety of studies devoted to the detection of pyridoxine on glass electrodes modified with carbon nanotubes (CNTs) [22], CuO-CNT composites [23], multi-walled carbon nanotubes [2], metal oxides [24], metal complexes [25] and polymers [26,27].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Rare-Earth Elements on the Morphological Aspect of Borate and Electrocatalytic Sensing of Biological Compounds

Morozov,

Stanković,

Avdin

et al. 2023

Biosensors

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Adjusting the morphological characteristics of a material can result in improved electrocatalytic capabilities of the material itself. An example of this is the introduction of rare-earth elements into the borate structure, which gives a new perspective on the possibilities of this type of material in the field of (bio)sensing. In this paper, we present the preparation of borates including La, Nd and Dy and their application for the modification of a glassy carbon electrode, which is used for the non-enzymatic detection of a biologically relevant molecule, vitamin B6 (pyridoxine). Compared with the others, dysprosium borate has the best electrocatalytic performance, showing the highest current and the lowest impedance, respectively, as determined using cyclic voltammetry and impedance tests. Quantitative testing of B6 was performed in DPV mode in a Britton–Robinson buffer solution with a pH of 6 and an oxidation potential of about +0.8 V. The calibration graph for the evaluation of B6 has a linear range from 1 to 100 μM, with a correlation coefficient of 0.9985 and a detection limit of 0.051 μM. The DyBO3-modified electrode can be used repeatedly, retaining more than 90% of the initial signal level after six cycles. The satisfactory selectivity offered a potential practical application of the chosen method for the monitoring of pyridoxine in artificially prepared biological fluids with acceptable recovery. In light of all the obtained results, this paper shows an important approach for the successful design of electrocatalysts with tuned architecture and opens new strategies for the development of materials for the needs of electrochemical (bio)sensing.

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“…The most important components in an electrochemical method are the electrode and electrode materials [15]. A few in the literature concerning with the electrochemical determination of VB6 use of electrode materials have been reported such as a multi‐wall carbon nanotube modified glassy carbon electrode [13]; carbon ceramic electrode modified with Prussian blue nanoparticles [16]; electrochemically reduced graphene oxide modified carbon ceramic electrode [17]; ZrO 2 nanoparticle/ionic liquids carbon paste electrode [18]; prussian blue nanoparticle‐modified poly(o‐phenylenediamine)/glassy carbon electrode [19]; Au−CuO core‐shell nanoparticles/multi walled carbon nanotubes/glassy carbon electrode [20]; copper nanoparticles modified gold electrode [21]; cobalt phthalocyanine/multiwalled carbon nanotube‐pyrolytic graphite electrode [22]; a pencil graphite electrode modified with gold nanoparticles/o‐aminophenol film [23]. It can be seen that inorganic nanomaterials have gotten a lot of attention due to their unique properties [24].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Copper Ions onto Poly(1,8‐diaminonaphthalene)/Graphene Film for Voltammetric Determination of Pyridoxine

Nguyen

et al. 2022

Electroanalysis

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In this work, pyridoxine (vitamin B6) was determined by the square wave voltammetry at copper‐poly(1,8‐diaminonaphthalene)/graphene modified glassy carbon electrode. The composite electrodes were fabricated with two steps. First, poly(1,8‐diaminonaphthalene) is electrodeposited onto graphene/glassy carbon electrodes with a potential cycling technique. Then, copper ions are adsorbed onto the poly(1,8‐diaminonaphthalene)/graphene modified glassy carbon electrode due to the immersion of the polymeric modified electrode in an aqueous copper (II) solution. The characterizations of synthesized materials have shown the role of graphene in facilitating the electron transfer and the remarkably electrocatalytic ability of copper for pyridoxine oxidation on the electrode surface. In 0.1 M phosphate buffer solution (pH 7.4), the peak current of square wave voltammograms of pyridoxine increased linearly with their concentration in the ranges between 0.58 and 24.51 μM with the limit of detection of 0.3 μM. The proposed electrodes showed excellent reproducibility and stability.

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Sensitive amperometric pyridoxine sensor based on self‐assembled Prussian blue nanoparticle‐modified poly(o‐phenylenediamine)/glassy carbon electrode

Cited by 8 publications

References 24 publications

Cost‐effective and Facile Production of a Phosphorus‐doped Graphite Electrode for the Electrochemical Determination of Pyridoxine

Cost‐effective and Facile Production of a Phosphorus‐doped Graphite Electrode for the Electrochemical Determination of Pyridoxine

The Effect of Rare-Earth Elements on the Morphological Aspect of Borate and Electrocatalytic Sensing of Biological Compounds

Adsorption of Copper Ions onto Poly(1,8‐diaminonaphthalene)/Graphene Film for Voltammetric Determination of Pyridoxine

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