Electrochemical Determination of Sunset Yellow Using an Electrochemically Prepared Graphene Oxide Modified – Pencil Graphite Electrode (EGO-PGE)

Tahtaisleyen, Selen; Gördük, Özge; Şahin, Yücel

doi:10.1080/00032719.2020.1767120

Cited by 36 publications

(18 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dependence of peak potentials (E pa and E pc ) against the scan rate is also shown in Figure 9(c). Hence, we imply that the nature of the redox process occurring on the electrode surface is nearly 11 Journal of Nanomaterials reversible (quasi-reversible) [20] and is clearly a diffusioncontrolled process [51]. The anodic peak potential (E pa ) was highly correlated with the natural logarithm of the scan rate (ln v) for α-MnO 2 /NiO/PANI/PGE in PBS (pH = 7:4) (Figure 9(d)).…”

Section: Electrochemical Propertymentioning

confidence: 82%

Surface Roughness and Electrochemical Performance Properties of Biosynthesized α-MnO2/NiO-Based Polyaniline Ternary Composites as Efficient Catalysts in Microbial Fuel Cells

Dessie

Tadesse

Eswaramoorthy

2021

Journal of Nanomaterials

View full text Add to dashboard Cite

In this study, biosynthesized α-MnO2/NiO NPs and chemically oxidative polyaniline (PANI) were synthesized to form ternary composite anode material for MFC. The synthesized materials were characterized with different materials (UV-Vis, FTIR, XRD, TGA-DTA-DSC, SEM-EDX-Gwyddion, CV, and EIS) to deeply examine their optical, structural, morphological, thermal, roughness, and electrocatalytic properties. The degree of surface roughness for α-MnO2/NiO/PANI was 23.65 ± 5.652 nm . This value was higher than the pure α-MnO2, pure PANI, and even α-MnO2/PANI nanocomposite due to surface modification. The total charge storing performance for bare PGE, α-MnO2/PGE, PANI/PGE, α-MnO2/PANI/PGE, and α-MnO2/NiO/PANI/PGE were 5.291, 17.267, 20.659, 23.258, and 24.456 mC. From this, the charge storing performance formed by α-MnO2/NiO/PANI-modified PGE was highest, indicating that this electrode is best in cycle stability and increases its life cycle during energy conversion time in MFC. This is also supported by its effective surface area, having a value of 0.00984 cm2. From this, it is evidenced that the ternary composite catalyst-modified anode facilitates the fast electrocatalytic activity as observed from its high peak current and lower peak-to-peak potential separation ( Δ E p = 0.216 V ) than other electrodes. Such surface modification helps to store more electrical charge by increasing electrical conductivity during its charge/discharge processing time. In addition, the lower charge transfer resistance property with a value of 788.9 Ω and the fast heterogeneous electron transfer rate of ~2.92 s-1 enable to facilitate glucose oxidation, and this enhances to produce high power output and increase wastewater treatment efficiency. As a result, the bioelectrical activity of α-MnO2/NiO/PANI composite-modified PGE was very effective in producing a maximum power density of 506.96 mW m-2 with COD of 81.92%. The above observations justified that α-MnO2/NiO/PANI/PGE serves as an effective anode material in double-chambered MFC application.

show abstract

Section: Electrochemical Propertymentioning

confidence: 82%

Surface Roughness and Electrochemical Performance Properties of Biosynthesized α-MnO2/NiO-Based Polyaniline Ternary Composites as Efficient Catalysts in Microbial Fuel Cells

Dessie

Tadesse

Eswaramoorthy

2021

Journal of Nanomaterials

View full text Add to dashboard Cite

show abstract

“…The fabrication of the EGO/GE to be utilized in the electrochemical detection of the vanillin was performed in one-step. For this purpose, based on previous studies (Ersozoglu et al 2020, Gürsu et al 2017, Gürsu et al 2018, Tahtaisleyen et al 2020a), graphene oxide formation was performed on the surface of the graphite electrode platform in 5.0 M H2SO4 solution, at +1.9 V constant potential and chronoamperometry method, and it was used for the first time for VAN determination. To investigate the effect of the applied potential time, a constant potential of +1.9 V was applied for periods of 15, 30, 60, 90, and 120 seconds.…”

Section: Fabrication Of Ego/gementioning

confidence: 99%

“…Field Emission Scanning Electron Microscopy (FESEM) and Atomic Force Microscopy (AFM) methods were used in the characterization process of the sensor optimized for vanillin determination. Advanced characterization studies of the electrode are presented in our previous study (Tahtaisleyen et al 2020a). The Field Emission Scanning Electron Microscopy (FESEM) characterization technique provides information on surface morphologies such as shapes and sizes of carbon nanostructures.…”

Section: Preparation and Characterization Studies Of Ego/gementioning

confidence: 99%

“…As a result of the oxidation process, the flat graphite structure of the Bare/GE was disintegrated into powder of small sizes as indicated with an arrow: submicron and nano. Mild electrochemical oxidation was strong enough to partially break the van der Waals interaction and intercalation occurred (Ersozoglu et al 2020, Tahtaisleyen et al 2020a). However, it does not allow the graphene oxide flakes to exfoliate.…”

Section: Preparation and Characterization Studies Of Ego/gementioning

confidence: 99%

“…Graphene oxide is an oxidized form of graphene, laced with oxygen-containing groups. Recently, graphene oxide have been used to prepare modified electrodes due to its excellent conductivity and convenience to functionalization (Ersozoglu et al 2020, Tahtaisleyen et al 2020a. Thanks to its superior graphene structure in terms of conductivity and surface area, load transfer, redox reaction and mechanical strength, graphene oxide has been extensively studied on electrode designs that exhibit superior mechanical, thermal and electrical properties (Gürsu et al 2017, Gürsu et al 2018).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Voltammetric Determination of Vanillin in Commercial Food Products Using Electrochemically Fabricated Graphene Oxide Modified Electrode

Gördük¹

2021

Afyon Kocatepe University Journal of Sciences and Engineering

Self Cite

View full text Add to dashboard Cite

Determination of vanillin, which is used increasingly common in the food, beverage, and drug industry, is important for human health. Therefore; it is essential to determine the amount of vanillin using a fast, simple and reliable method. In this study; an electrode modified with graphene oxide prepared in one-step, in a one-pot, with an environmentally friendly method, was prepared and used for the electrochemical determination of vanillin (VAN), as flavoring. The electrochemically fabricated graphene oxide electrode (EGO/GE) was prepared by electrochemically producing the graphene oxide structure on the graphite electrode surface. The characterization of the prepared EGO/GE was performed using techniques such as field emission scanning electron microscopy and atomic force microscopy and it was concluded that the proposed EGO/GE material was successfully prepared. While the investigation of the electrochemical behavior of the VAN was performed by the cyclic voltammetry, the differential pulse voltammetry method was used for the voltammetric determination. It was determined that EGO/GE, is used in the electrochemical determination of VAN, exhibits high electrocatalytic performance, a wide linear range (0.1-1000 µM), and a low detection limit (0.05 µM) compared to unmodified GE. The selectivity of the prepared sensor was studied in the presence of ions and organic substances. The sensor (EGO/GE) was used for VAN detection in ice-cream, coffee, and cookie samples and high recovery values were obtained. As a result of the stability and reproducibility studies carried out for the sensor, it has been observed that it is quite stable and suitable for reproduction.

show abstract

Sensitive Electrochemical Determination of NADH Using an Electrode Fabricated by Intercalation of Tetrabutylammonium Ions Into Graphite Electrode

Gördük

2021

Electroanalysis

Self Cite

View full text Add to dashboard Cite

In this study, we present a strategy for the specific electrochemical detection of NADH in human blood serums using modified electrode fabricated by intercalation of tetrabutylammonium ions (TBA+) into pencil graphite electrode (TBA+/PGE). In order to implement this protocol, a modification process in the potential range (−0.2) to (−2.75) V was performed in DMSO containing 0.1 M TBAP by CV method. The characterization processes of the prepared sensor were carried out using CV, EIS, FT‐IR, XPS, and SEM methods. The electrode fabricated by intercalation of TBA+ was found to be able to analyze NADH at +0.32 V applied potential by the amperometric method. The LOD was detected as 0.46 μM. The analysis results of human blood serums which are taken from healthy individuals show that TBA+/PGE can be used for real samples. The results indicated that TBA+/PGE can be easily fabricated by one‐step and one‐pot electrochemical method and TBA+/PGE can be used as a potential sensor for the NADH determination.

show abstract

Electrochemical Determination of Sunset Yellow Using an Electrochemically Prepared Graphene Oxide Modified – Pencil Graphite Electrode (EGO-PGE)

Cited by 36 publications

References 55 publications

Surface Roughness and Electrochemical Performance Properties of Biosynthesized α-MnO2/NiO-Based Polyaniline Ternary Composites as Efficient Catalysts in Microbial Fuel Cells

Surface Roughness and Electrochemical Performance Properties of Biosynthesized α-MnO2/NiO-Based Polyaniline Ternary Composites as Efficient Catalysts in Microbial Fuel Cells

Voltammetric Determination of Vanillin in Commercial Food Products Using Electrochemically Fabricated Graphene Oxide Modified Electrode

Sensitive Electrochemical Determination of NADH Using an Electrode Fabricated by Intercalation of Tetrabutylammonium Ions Into Graphite Electrode

Contact Info

Product

Resources

About