Facile synthesis of Yb2O3–graphene nanocomposites for enhanced energy and environmental applications

Saravanan, T.; Anandan, P.; Manivannan, Shanmugam; Mukkannan, Azhagurajan; Ismail, M. Mohamed; Arivanandhan, M.; Hayakawa, Y.; Jayavel, R.

doi:10.1007/s00289-019-02945-2

Cited by 17 publications

(8 citation statements)

References 20 publications

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“…Graphene oxide (GO) and inorganic- or organic-based nanocomposite materials (NCMs) have drawn a center of curiosity due to their widespread applications in optoelectronics, batteries, catalysis, photocatalysis, magnetism, bioimaging, solar cells, etc. − Normally, making a composite between two different materials enables one to obtain a property combination that may not be available from a single material. ,− Graphene oxide is obtained by the oxidation and subsequent exfoliation of graphite via a chemical route. Graphene is fundamentally one atom thick and two-dimensional (2D) with a honeycomb-like structure that was discovered by Novoselov et al in 2004 .…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Lanthanide-Doped Binary Fluorides and Graphene Oxide Nanocomposites Via a Task-Specific Ionic Liquid

et al. 2022

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Graphene oxide-based nanocomposites (NCMs) exhibit diverse photonic and biophotonic applications. Innovative nanoengineering using a task-specific ionic liquid (IL), namely, 1-butyl-3-methyl tetrafluoroborate [C 4 mim][BF 4 ], allows one to access a unique class of luminescent nanocomposites formed between lanthanide-doped binary fluorides and graphene oxide (GO). Here the IL is used as a solvent, templating agent, and as a reaction partner for the nanocomposite synthesis, that is, “all three in one”. Our study shows that GO controls the size of the NCMs; however, it can tune the luminescence properties too. For example, the excitation spectrum of Ce 3+ is higher-energy shifted when GO is attached. In addition, magnetic properties of GdF 3 :Tb 3+ nanoparticles (NPs) and GdF 3 :Tb 3+ -GO NCMs are also studied at room temperature (300 K) and very low temperature (2 K). High magnetization results for the NPs (e.g., 6.676 emu g –1 at 300 K and 184.449 emu g –1 at 2 K in the applied magnetic field from +50 to −50 kOe) and NCMs promises their uses in many photonic and biphotonic applications including magnetic resonance imaging, etc.

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Section: Introductionmentioning

confidence: 99%

Multifunctional Lanthanide-Doped Binary Fluorides and Graphene Oxide Nanocomposites Via a Task-Specific Ionic Liquid

et al. 2022

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“…The Yb4d5/2 spectrum has three clearly defined peaks appearing at energies of 187.2, 188.4, and 189.1, are compatible with Yb4d (Fig. 1b) [50]. In the deconvoluted Cu2p spectrum in Fig.…”

Section: Characterization Of Yb2o3cuo@rgo Nanocompositementioning

confidence: 75%

Low Overpotential Amperometric Sensor using Yb2O3.CuO@rGO Nanocomposite for Sensitive Detection of Ascorbic Acid in Real Samples

Ahmed¹,

Faisal²,

Algethami³

et al. 2023

Preprint

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The ultimate objective of this research work is to design a sensitive and selective electrochemical sensor for efficient detection of ascorbic acid (AA), a vital antioxidant found in blood serum that may serve as a biomarker for oxidative stress. To achieve this, we utilized a novel Yb2O3.CuO@rGO nanocomposite (NC) as the active material to modify the glassy carbon working electrode (GCE). The structural properties and morphological characteristics of the Yb2O3.CuO@rGO NC were investigated using various techniques to ensure their suitability for the sensor. The resulting sensor electrode was able to detect a broad range of AA concentrations (0.5 - 1571 µM) in neutral phosphate buffer solution with a high sensitivity of 0.4341 µAµM-1cm-2 and a reasonable detection limit of 0.062 µM. The sensor's great sensitivity and selectivity allowed it to accurately determine the levels of AA in human blood serum and commercial vitamin C tablets. It demonstrated high levels of reproducibility, repeatability, and stability, making it a reliable and robust sensor for the measurement of AA at low overpotential. Overall, the Yb2O3.CuO@rGO/GCE sensor showed great potential in detecting AA from real samples.

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“…The initial starting point of the curve was considered as the bulk electrolyte resistance or electrochemical series resistance (ESR). These resistances were responsible for contact resistance between the electrode material and the current collector [46][47][48][49][50]. NCS(CBD)/Ni electrode showed a 0.6 Ω ESR which is relatively lesser than the NCS(PW)/Ni electrode's 1.8 Ω ESR value, which confirms the in situ binder-free growth CBD process reduced the contact resistance between the current collector and electrode material [51][52][53].…”

Section: Electrochemical Performance Of Nico 2 S 4 Materialsmentioning

confidence: 82%

In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo2S4/Ni Electrodes for Solid-State Hybrid Supercapacitors

et al. 2021

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Herein, we report a comparison of the electrochemical performance of two kinds of NiCo2S4-based electrodes for solid-state hybrid supercapacitors (HSCs). For the binder-free electrode, NiCo2S4 was grown on Ni foam by the chemical bath deposition (CBD) method. For the binder-using electrode, NiCo2S4 powder was synthesized by the hydrothermal method. FESEM images depicted the hierarchical nanostructure of NiCo2S4 synthesized by the hydrothermal method and uniform distribution of nanostructured NiCo2S4 grown on Ni foam by the CBD method. Half-cell studies of both NiCo2S4 electrodes showed them exhibiting battery-type charge storage behavior. To assemble HSCs, NiCo2S4 and activated carbon were used as a positive and negative electrode, respectively. Electrochemical studies of the HSCs showed that the accessible potential window was wide, up to 2.6 V, through cyclic voltammetry (CV) analysis. Chronopotentiometry (CP) studies revealed that the energy and power densities of binder-using HSC were 51.24 Wh/kg and 13 kW/kg at 1 Ag−1, respectively, which were relatively higher than those of the binder-free HSC. The binder-free HSC showed 52% cyclic stability, relatively higher than that of the binder-using HSC. Both HSCs, with unique benefits and burdens on energy storage performance, are discussed in this work.

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Facile synthesis of Yb2O3–graphene nanocomposites for enhanced energy and environmental applications

Cited by 17 publications

References 20 publications

Multifunctional Lanthanide-Doped Binary Fluorides and Graphene Oxide Nanocomposites Via a Task-Specific Ionic Liquid

Multifunctional Lanthanide-Doped Binary Fluorides and Graphene Oxide Nanocomposites Via a Task-Specific Ionic Liquid

Low Overpotential Amperometric Sensor using Yb2O3.CuO@rGO Nanocomposite for Sensitive Detection of Ascorbic Acid in Real Samples

In Situ Binder-Free and Hydrothermal Growth of Nanostructured NiCo2S4/Ni Electrodes for Solid-State Hybrid Supercapacitors

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