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

Sobahi, Nebras; Imran, Mohd; Khan, Mohammad Ehtisham; Mohammad, Akbar; Alam, Manawwer; Yoon, Taeho; Mehedi, Ibrahim M.; Hussain, Mohammad Asif; Abdulaal, Mohammed J.; Jiman, Ahmad A.

doi:10.3390/ma16072770

Cited by 27 publications

(9 citation statements)

References 82 publications

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“…The LOD and the sensitivity of HoVO 4 /P-CN/GCE are calculated as 0.003 μM and 0.72 μA μM –1 cm –2 , respectively. The analytical performance of the proposed HoVO 4 /P-CN-modified GCE for H 2 O 2 detection is compared to the previous reports in Table . ,− This analytical study reveals that the proposed HoVO 4 /P-CN nanocomposite-based electrochemical sensor shows superior or equivalent sensing performance for H 2 O 2 detection compared with the formerly reported electrochemical platforms. The superior electrochemical performance of the HoVO 4 /P-CN nanocomposite is attributed to good electrical conductivity, synergistic effect, large surface area, and more active sites.…”

Section: Resultsmentioning

confidence: 99%

Synergism of Holmium Orthovanadate/Phosphorus-Doped Carbon Nitride Nanocomposite: Nonenzymatic Electrochemical Detection of Hydrogen Peroxide

Kokulnathan,

Wang,

Ahmed

et al. 2024

Inorg. Chem.

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Developing efficient and robust electrode materials for electrochemical sensors is critical for real-time analysis. In this paper, a hierarchical holmium vanadate/phosphorus-doped graphitic carbon nitride (HoVO 4 /P-CN) nanocomposite is synthesized and used as an electrode material for electrochemical detection of hydrogen peroxide (H 2 O 2 ). The HoVO 4 /P-CN nanocomposite exhibits superior electrocatalytic activity at a peak potential of −0.412 V toward H 2 O 2 reduction in alkaline electrolytes while compared with other reported electrocatalysts. The HoVO 4 /P-CN electrochemical platform operated under the optimized conditions shows excellent analytical performance for H 2 O 2 detection with a linear concentration range of 0.009−77.4 μM, a high sensitivity of 0.72 μA μM −1 cm −2 , and a low detection limit of 3.0 nΜ. Furthermore, the HoVO 4 /P-CN-modified electrode exhibits high selectivity, remarkable stability, good repeatability, and satisfactory reproducibility in detecting H 2 O 2 . Its superior performance can be attributed to a large specific surface area, high conductivity, more active surface sites, unique structure, and synergistic action of HoVO 4 and P-CN to benefit enhanced electrochemical activity. The proposed HoVO 4 /P-CN electrochemical platform is effectively applied to ascertain the quantity of H 2 O 2 in food and biological samples. This work outlines a promising and effectual strategy for the sensitive electrochemical detection of H 2 O 2 in real-world samples.

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Section: Resultsmentioning

confidence: 99%

Synergism of Holmium Orthovanadate/Phosphorus-Doped Carbon Nitride Nanocomposite: Nonenzymatic Electrochemical Detection of Hydrogen Peroxide

Kokulnathan,

Wang,

Ahmed

et al. 2024

Inorg. Chem.

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“…TMOs (e.g., TiO 2 , Fe 3 O 4 , and ZnO) have shown good promise in this regard. Integrating Fe 3 O 4 nanoparticles with graphene supported by carbon cloth was used to detect hydrogen peroxide [ 118 ]. This flexible sensor illustrated a satisfactory detection limit as low as 4.79 μM, with an optimized linear range between 10 and 110 μM.…”

Section: Sensing Applicationsmentioning

confidence: 99%

An Overview of Electrochemical Sensors Based on Transition Metal Carbides and Oxides: Synthesis and Applications

Mashhadian,

Jian,

Tian

et al. 2023

Micromachines

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Sensors play vital roles in industry and healthcare due to the significance of controlling the presence of different substances in industrial processes, human organs, and the environment. Electrochemical sensors have gained more attention recently than conventional sensors, including optical fibers, chromatography devices, and chemiresistors, due to their better versatility, higher sensitivity and selectivity, and lower complexity. Herein, we review transition metal carbides (TMCs) and transition metal oxides (TMOs) as outstanding materials for electrochemical sensors. We navigate through the fabrication processes of TMCs and TMOs and reveal the relationships among their synthesis processes, morphological structures, and sensing performance. The state-of-the-art biological, gas, and hydrogen peroxide electrochemical sensors based on TMCs and TMOs are reviewed, and potential challenges in the field are suggested. This review can help others to understand recent advancements in electrochemical sensors based on transition metal oxides and carbides.

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“…As one of the major reactive oxygen species in some chemical reactions, H 2 O 2 plays an important role in medical diagnosis, pharmaceutical, environmental protection, food processing and other fields [1][2][3][4]. Therefore, accurate and reliable detection of H 2 O 2 is necessary for practical applications across different disciplines.…”

Section: Introductionmentioning

confidence: 99%

Ni/WS2/WC Composite Nanosheets as an Efficient Catalyst for Photoelectrochemical Hydrogen Peroxide Sensing and Hydrogen Evolution

Liu,

Zhu,

Chen

et al. 2024

Materials

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It is highly attractive to develop a photoelectrochemical (PEC) sensing platform based on a non-noble-metal nano array architecture. In this paper, a PEC hydrogen peroxide (H2O2) biosensor based on Ni/WS2/WC heterostructures was synthesized by a facile hydrothermal synthesis method and melamine carbonization process. The morphology, structural and composition and light absorption properties of the Ni/WS2/WC catalyst were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV–visible spectrophotometer. The average size of the Ni/WS2/WC nanosheets was about 200 nm. Additionally, the electrochemical properties toward H2O2 were studied using an electrochemical workstation. Benefiting from the Ni and C atoms, the optimized Ni/WS2/WC catalyst showed superior H2O2 sensing performance and a large photocurrent response. It was found that the detection sensitivity of the Ni/WS2/WC catalyst was 25.7 μA/cm2/mM, and the detection limit was 0.3 mmol/L in the linear range of 1−10 mM. Simultaneously, the synthesized Ni/WS2/WC electrode displayed excellent electrocatalytic properties in hydrogen evolution reaction (HER), with a relatively small overpotential of 126 mV at 10 mA/cm2 in 0.5 M H2SO4. This novel Ni/WS2/WC electrode may provide new insights into preparing other efficient hybrid photoelectrodes for PEC applications.

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

Cited by 27 publications

References 82 publications

Synergism of Holmium Orthovanadate/Phosphorus-Doped Carbon Nitride Nanocomposite: Nonenzymatic Electrochemical Detection of Hydrogen Peroxide

Synergism of Holmium Orthovanadate/Phosphorus-Doped Carbon Nitride Nanocomposite: Nonenzymatic Electrochemical Detection of Hydrogen Peroxide

An Overview of Electrochemical Sensors Based on Transition Metal Carbides and Oxides: Synthesis and Applications

Ni/WS2/WC Composite Nanosheets as an Efficient Catalyst for Photoelectrochemical Hydrogen Peroxide Sensing and Hydrogen Evolution

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