Voltammetric determination of nitrite with gold nanoparticles/poly(methylene blue)-modified pencil graphite electrode: application in food and water samples

Koyun, Ozge; Şahin, Yücel

doi:10.1007/s11581-017-2429-7

Cited by 42 publications

(10 citation statements)

References 47 publications

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“…Figure 1a-b shows the surface morphology of the P-doped/PGE at different magnifications. In our previous articles, we showed that Bare/PGE has a flat structure [23,24]. According to the FESEM micrographs obtained, the anodically pretreated electrode surface is seen to be rough and the graphite layers were broken down.…”

Section: Characterization and Morphology Of The P-doped/pgementioning

confidence: 87%

“…Cyclic voltammetry experiments further confirmed that the anodically electrochemical pretreatment process was successfully carried out on the Bare/PGE surface. Besides, the CV characterization method offers information about the charges of the groups on the electrode surface [24]. It was observed that the P-doped/PGE was more negatively polarized than the Bare/PGE.…”

Section: Characterization and Morphology Of The P-doped/pgementioning

confidence: 99%

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

2021

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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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Section: Characterization and Morphology Of The P-doped/pgementioning

confidence: 87%

Section: Characterization and Morphology Of The P-doped/pgementioning

confidence: 99%

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

2021

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“…Through PMB and creatine coordination to Cu centers, this sensor showed excellent selectivity, sensitivity (0.133 μA ng mL −1 ), and LOD (0.2 ng mL −1 ), with consistent measurements in clinical human saliva samples (1–2% RSD). Examples abound of recent electrochemical biosensors with polymers including PMB (Koyun and Sahin, 2018; Li et al, 2018; Wang and Ma, 2018; Bollella et al, 2019a,b), poly(alizarin yellow R) (Amini et al, 2019), poly(azure A) (Agrisuelas et al, 2018), poly(azure B) (Porfireva et al, 2019; Stoikov et al, 2019), poly(azure C) (Liu et al, 2019), poly(brilliant cresyl blue) (da Silva et al, 2019), and poly(thionine) (Shamspur et al, 2018; Wang Y. et al, 2018; Zhao and Ma, 2018; Chai and Kan, 2019; Stoikov et al, 2019), demonstrating the versatility of organic dyes in designing novel, semiconducting polymers for biosensors.…”

Section: Organic Semiconducting Polymers For Electrochemical Biosensorsmentioning

confidence: 99%

All-Organic Semiconductors for Electrochemical Biosensors: An Overview of Recent Progress in Material Design

Hopkins

Fidanovski

Lauto

et al. 2019

Front. Bioeng. Biotechnol.

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Organic semiconductors remain of major interest in the field of bioelectrochemistry for their versatility in chemical and electrochemical behavior. These materials have been tailored using organic synthesis for use in cell stimulation, sustainable energy production, and in biosensors. Recent progress in the field of fully organic semiconductor biosensors is outlined in this review, with a particular emphasis on the synthetic tailoring of these semiconductors for their intended application. Biosensors ultimately function on the basis of a physical, optical or electrochemical change which occurs in the active material when it encounters the target analyte. Electrochemical biosensors are becoming increasingly popular among organic semiconductor biosensors, owing to their good detection performances, and simple operation. The analyte either interacts directly with the semiconductor material in a redox process or undergoes a redox process with a moiety such as an enzyme attached to the semiconductor material. The electrochemical signal is then transduced through the semiconductor material. The most recent examples of organic semiconductor biosensors are discussed here with reference to the material design of polymers with semiconducting backbones, specifically conjugated polymers, and polymer semiconducting dyes. We conclude that direct interaction between the analyte and the semiconducting material is generally more sensitive and cost effective, despite being currently limited by the need to identify, and synthesize selective sensing functionalities. It is also worth noting the potential roles of highly-sensitive, organic transistor devices and small molecule semiconductors, such as the photochromic and redox active molecule spiropyran, as polymer pendant groups in future biosensor designs.

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“…At low concentrations of melamine, pale red coloured solution was obtained due to the formation of an aggregated mass of AgNPs, whereas, at high concentrations of melamine, colourless solution was obtained, indicating disruption in the synthesis of AgNPs [43]. For nitrites a gold nanoparticle/poly(methylene blue) (GNP/PMB)-modified pencil graphite electrode (PGE) was used [44]. This method was applied to commercial sausage and mineral water samples, where a linear relationship was observed in the concentration range of 5–5000 μM.…”

Section: Contaminants Determinationmentioning

confidence: 99%

Noble Metal Nanoparticles Applications: Recent Trends in Food Control

Vinci

Rapa

2019

Bioengineering

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Scientific research in the nanomaterials field is constantly evolving, making it possible to develop new materials and above all to find new applications. Therefore, nanoparticles (NPs) are suitable for different applications: nanomedicine, drug delivery, sensors, optoelectronics and food control. This review explores the recent trend in food control of using noble metallic nanoparticles as determination tools. Two major uses of NPs in food control have been found: the determination of contaminants and bioactive compounds. Applications were found for the determination of mycotoxins, pesticides, drug residues, allergens, probable carcinogenic compounds, bacteria, amino acids, gluten and antioxidants. The new developed methods are competitive for their use in food control, demonstrated by their validation and application to real samples.

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Voltammetric determination of nitrite with gold nanoparticles/poly(methylene blue)-modified pencil graphite electrode: application in food and water samples

Cited by 42 publications

References 47 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

All-Organic Semiconductors for Electrochemical Biosensors: An Overview of Recent Progress in Material Design

Noble Metal Nanoparticles Applications: Recent Trends in Food Control

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