Fabrication of Nitrogen-Doped Reduced Graphene Oxide Modified Screen Printed Carbon Electrode (N-rGO/SPCE) as Hydrogen Peroxide Sensor

Ahmad, Khursheed; Kim, Haekyoung

doi:10.3390/nano12142443

Cited by 17 publications

(6 citation statements)

References 61 publications

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“…In the meanwhile, the C 1s spectrum shown in Figure e has strong intensity peaks at 284, 286, and 288 eV assigned to C=C, C–O–C, and O=C–O groups, respectively . Concerning the oxygen O 1s peak, Figure f exhibits the presence of C=O and O=C–O bonds …”

Section: Resultsmentioning

confidence: 99%

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Cyanido-Bridged Bimetallic/rGO Electrodes for Dye-Sensitized Solar Cells and Battery-Type Supercapacitors

Rasappan,

Palanisamy,

Sankaiya

et al. 2024

ACS Appl. Nano Mater.

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The development of physiochemically stable multifunctional electrodes for energy conversion and storage is groundbreaking in the field of research for integrated devices. On that note, WS 2 /rGO/NiFe nanocages were designed by employing the Kirkendall effect, which were used as a counter electrode in dye-sensitized solar cells (DSSCs) and asymmetric supercapacitors (ASCs). The WS 2 /rGO/NiFe nanocages exhibited a power conversion efficiency of 6.5% in the DSSC device. In the supercapacitor, the advantage of nanocage formation makes the electrolyte easily access the inner area of the electrode, resulting in an outstanding specific capacitance of 779.6 F/g at 1 A/g current density. The WS 2 /rGO/NiFe nanocages//AC device owing to multiple oxidation states of nickel and tungsten attains an energy density of 67.2 Wh/kg and power density of 1209 W/kg with a Coulombic efficiency and retention capacitance of 99.01 and 82.3% at 6 A/g current density after 6000 cycles. Thus, the findings unequivocally establish vast possibilities present in the implementation of WS 2 /rGO/NiFe nanocages as all-in-one electrodes, bestowing upon exquisite innovative electronic devices of supreme sophistication.

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Section: Resultsmentioning

confidence: 99%

“…42 Concerning the oxygen O 1s peak, Figure 3f exhibits the presence of C=O and O=C−O bonds. 43 3.5. N 2 Adsorption−Desorption Analysis.…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Cyanido-Bridged Bimetallic/rGO Electrodes for Dye-Sensitized Solar Cells and Battery-Type Supercapacitors

Rasappan,

Palanisamy,

Sankaiya

et al. 2024

ACS Appl. Nano Mater.

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“…The nitrogen-doped rGO has a D/G ratio between 0.86 and 0.89. The addition of nitrogen increases the defect band when compared to rGO materials. , …”

Section: Resultsmentioning

confidence: 99%

“…The addition of nitrogen increases the defect band when compared to rGO materials. 37,38 XPS allows the evaluation of the chemical composition of the printed films, both quantitatively and qualitatively (Figure 2b−d). The obtained spectra for the carbon region can be deconvoluted into different peaks, each one correlated with specific chemical bonds.…”

Section: Morphological and Chemical Characterizationmentioning

confidence: 99%

Environmentally Friendlier Printable Conductive and Piezoresistive Sensing Materials Compatible with Conformable Electronics

Motealleh

Costa

Peřinka

et al. 2023

ACS Appl. Polym. Mater.

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Flexible and conformable conductive composites have been developed using different polymers, including water-based polyvinylpyrrolidone (PVP), chemical-resistant polyvinylidene fluoride (PVDF), and elastomeric styrene−ethylene−butylene−styrene (SEBS) reinforced with nitrogen-doped reduced graphene oxide with suitable viscosity in composites for printable solutions with functional properties. Manufactured by screen-printing using low-toxicity solvents, leading to more environmentally friendly conductive materials, the materials present an enormous step toward functional devices. The materials were enhanced in terms of filler/binder ratio, achieving screenprinted films with a sheet resistance lower than R sq < 100 Ω/sq. The materials are biocompatible and support bending deformations up to 10 mm with piezoresistive performance for the different polymers up to 100 bending cycles. The piezoresistive performance of the SEBS binder is greater than double that the other composites, with a gauge factor near 4. Thermoforming was applied to all materials, with the PVP-based ones showing the lowest electrical resistance after the bending process. These conductive materials open a path for developing sustainable and functional devices for printable and conformable electronics.

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“…The limit of detection (LOD) and sensitivity of fabricated Fe 3 O 4 /Gr/CC sensors can be estimated using the previous method reported [ 74 , 75 ]. For this, we used Equations (1) and (2), which were mentioned below, to find out the LOD and sensitivity of the Fe 3 O 4 /Gr/CC for the sensing of H 2 O 2 : Limit of detection (LOD) = 3.3 (σ/S) Sensitivity = Slope/area of the working electrode where σ = standard error, and S = slope.…”

Section: Fabrication Of Fe 3 O 4 ...mentioning

confidence: 99%

Electrochemical Sensing of H2O2 by Employing a Flexible Fe3O4/Graphene/Carbon Cloth as Working Electrode

et al. 2023

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We report the synthesis of Fe3O4/graphene (Fe3O4/Gr) nanocomposite for highly selective and highly sensitive peroxide sensor application. The nanocomposites were produced by a modified co-precipitation method. Further, structural, chemical, and morphological characterization of the Fe3O4/Gr was investigated by standard characterization techniques, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM) and high-resolution TEM (HRTEM), Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS). The average crystal size of Fe3O4 nanoparticles was calculated as 14.5 nm. Moreover, nanocomposite (Fe3O4/Gr) was employed to fabricate the flexible electrode using polymeric carbon fiber cloth or carbon cloth (pCFC or CC) as support. The electrochemical performance of as-fabricated Fe3O4/Gr/CC was evaluated toward H2O2 with excellent electrocatalytic activity. It was found that Fe3O4/Gr/CC-based electrodes show a good linear range, high sensitivity, and a low detection limit for H2O2 detection. The linear range for the optimized sensor was found to be in the range of 10–110 μM and limit of detection was calculated as 4.79 μM with a sensitivity of 0.037 µA μM−1 cm−2. The cost-effective materials used in this work as compared to noble metals provide satisfactory results. As well as showing high stability, the proposed biosensor is also highly reproducible.

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Fabrication of Nitrogen-Doped Reduced Graphene Oxide Modified Screen Printed Carbon Electrode (N-rGO/SPCE) as Hydrogen Peroxide Sensor

Cited by 17 publications

References 61 publications

Cyanido-Bridged Bimetallic/rGO Electrodes for Dye-Sensitized Solar Cells and Battery-Type Supercapacitors

Cyanido-Bridged Bimetallic/rGO Electrodes for Dye-Sensitized Solar Cells and Battery-Type Supercapacitors

Environmentally Friendlier Printable Conductive and Piezoresistive Sensing Materials Compatible with Conformable Electronics

Electrochemical Sensing of H2O2 by Employing a Flexible Fe3O4/Graphene/Carbon Cloth as Working Electrode

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