Novel construction of carbon nanofiber/CuCrO2 composite for selective determination of 4-nitrophenol in environmental samples and for supercapacitor application

Sakthinathan, Subramanian; Rajakumaran, Ramachandran; Keyan, Arjunan Karthi; Yu, Chung‐Lun; Vinothini, S.; Chen, Shen‐Ming; Chiu, Te‐Wei

doi:10.1039/d1ra02783b

Cited by 11 publications

(4 citation statements)

References 49 publications

(63 reference statements)

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“…This indicates that the hexagonal carbon crystal face is in good accord with previously published data. 43 The synthesized CNF/Fe 2 WO 6 diffraction peaks exhibited at 2θ = 25.32°, 27.00°, 33.09°, 44.95°, 36.13°, 44.52°, 54.48°, 55.66°, 65.86°, 71.12°, 73.15°and all these are indexed into (130), ( 111), ( 141), ( 150), ( 132), ( 202), ( 222), ( 192), ( 223), (361) at result shows that complete formation of the pure CNF/Fe 2 WO 6 composite. XRD analysis of the CNF/Fe 2 WO 6 composites good agreement with the SEM results, and the XRD reflection pattern corresponds to the CNF and Fe 2 WO 6 crystalline phase.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

Mariappan

Alagarsamy

Chen

et al. 2023

J. Electrochem. Soc.

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Metronidazole (MTD) is a common antibiotic used to treat various pathogens and protozoal infections in humans and domestic animals. This drug is, however, prohibited in various countries owing to its extremely precarious properties. Hence, the low-limit detection of MTD in the environment is more important because it is very impactful and affects human health. Iron tungstate (Fe2WO6) has been produced by the hydrothermal method and the carbon nanofibers (CNF) prepared from the electrospinning technique. After that, CNF/Fe2WO6 composite decorated glassy carbon electrode (GCE) was used for the electrochemical detection of MTD. Here, the different physicochemical characterization studies were used to confirm the CNF/Fe2WO6 composite. Moreover, electrochemical impedance spectroscopy, cyclic voltammetry studies, and differential pulse voltammetry have been used for the electrochemical studies of modified electrodes. The electrochemical results of GCE/CNF/Fe2WO6 electrodes exhibited an excellent electrochemical response at -0.5 V. The MTD detection limit has been calculated by the very low detection limit concentrations (0.013 μM). Further, the GCE/CNF/Fe2WO6 electrodes performed at high sensitivity (1.55 μA μM−1 cm-2) with a wide linear range (0.01-1792 μM). Besides, the GCE/CNF/Fe2WO6 have excellent repeatability, reproducibility, stability, and real sample analysis performances.

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Section: Resultsmentioning

confidence: 99%

Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

Mariappan

Alagarsamy

Chen

et al. 2023

J. Electrochem. Soc.

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“…Although Al2O3 has lower conductivity than another metal oxide, Al2O3 has good chemical stability and a large specific surface area [16]. Apart from Al2O3 and activated carbon, in this study, CuCrO2 delafossite material was used due to its high stability, good pore surface, large surface area, high thermal stability, and electrical conductivity [17,18]. Previous study by Manickam et al (2020), a CuCrO2 delafossite-based supercapacitor has a specific capacitance of 248 F/g [19].…”

Section: Introductionmentioning

confidence: 99%

Performance Optimization of Supercapbattery with Porous Modification on Silicon as Anode and Cathode Based on Al2O3/CuCrO2

Nurul Hidayah,

Diantoro,

Nasikhudin

et al. 2024

MSF

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The development of the supercapbattery has become the focus of energy storage research due to their potential to increase energy and power density. This research is focused on developing a modification of silicon (Si) porous as an anode with Al2O3/CuCrO2/AC composite as a cathode of supercapacitor. These electrodes were synthesized using LA133 binder with deionized water as solvent. The supercapacitor electrode uses an aluminum foil substrate, while the Si electrode uses a cupper foil substrate. The structural and morphological characterization of the electrodes were identified through XRD, FTIR, and SEM tests, while the electrochemical performance characterization using Galvanostatic Charge-Discharge (GCD) instruments. The results of XRD data analysis of thin film electrodes of supercapacitor showed diffraction peaks which indicated the phases Al2O3/CuCrO2/AC and Si porous. The absorption functional groups of Al2O3/CuCrO2/AC and Si porous were identified through FTIR characterization. The results of SEM showed the addition of CuCrO2 and structure modification of silicon into porous caused increasing value of porosity. The electrochemical performance of the optimum point at Al2O3/CuCrO2/AC condition, showing a specific capacitance of 50.3 F/g, an energy density of 36.499 Wh/kg, and a power density of 433.6 W/kg. The combination of Al2O3/CuCrO2/AC//Si Porous 16 for supercapbattery devices shows performance with a specific capacitance of 14.4 F/g, an energy density of 6.1 Wh/kg, and a power density of 33.6 W/kg. These results indicate an increase in electrochemical performance compared with Si anodes without modification.

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“…Research on sustainable and renewable energy sources is ongoing due to the declining fossil fuel reserves and growing population [1,2]. Meanwhile, energy storage devices are widely used in digital communications, electric motor vehicles, data storage, and portable electronic devices.…”

Section: Introductionmentioning

confidence: 99%

CuFe2O4 Nanofiber Incorporated with a Three-Dimensional Graphene Sheet Composite Electrode for Supercapacitor and Electrochemical Sensor Application

Vinothini,

Keyan,

Sakthinathan

et al. 2024

Inorganics

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The demand for regenerative energy and electric automotive applications has grown in recent decades. Supercapacitors have multiple applications in consumer alternative electronic products due to their excellent energy density, rapid charge/discharge time, and safety. CuFe2O4-incorporated three-dimensional graphene sheet (3DGS) nanocomposites were studied by different characterization studies such as X-ray diffraction, transmission electron microscopy, and scanning electron microscopy. The electrochemical studies were based on cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) measurements. As prepared, 3DGS/CuFe2O4 nanocomposites exhibited an excellent surface area, high energy storage with appreciable durability, and excellent electrocatalysis properties. A supercapacitor with 3DGS/CuFe2O4-coated nickel foam (NF) electrodes exhibited an excellent specific capacitance of 488.98 Fg−1, a higher current density, as well as a higher power density. After charge–discharge cycles in a 2.0 M KOH aqueous electrolyte solution, the 3DGS/CuFe2O4/NF electrodes exhibited an outstanding cyclic stability of roughly 95% at 10 Ag−1, indicating that the prepared nanocomposites could have the potential for energy storage applications. Moreover, the 3DGS/CuFe2O4 electrode exhibited an excellent electrochemical detection of chloramphenicol with a detection limit of 0.5 µM, linear range of 5–400 µM, and electrode sensitivity of 3.7478 µA µM−1 cm−2.

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Novel construction of carbon nanofiber/CuCrO₂ composite for selective determination of 4-nitrophenol in environmental samples and for supercapacitor application

Abstract: A simple hydrothermal process has been used to prepare a carbon nanofiber/copper chromium dioxide (CNF/CuCrO2) composite for the selective detection of 4-nitrophenol (4-NP) and supercapacitor applications.

Cited by 11 publications

References 49 publications

Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

Performance Optimization of Supercapbattery with Porous Modification on Silicon as Anode and Cathode Based on Al<sub>2</sub>O<sub>3</sub>/CuCrO<sub>2</sub>

CuFe2O4 Nanofiber Incorporated with a Three-Dimensional Graphene Sheet Composite Electrode for Supercapacitor and Electrochemical Sensor Application

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