Chemisorption of gadolinium ions on 2D-graphitic carbon nitride nanosheet for enhanced solid-state supercapacitor performance

Kuila, Saikat Kumar; Ghorai, Arup; Midya, Anupam; Tiwary, Chandra Sekhar; Kundu, Tarun Kumar

doi:10.1016/j.cplett.2022.139572

Cited by 23 publications

(16 citation statements)

References 32 publications

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“…The synthesis methods of catalysts, i.e., bulk- g -C 3 N 4 and 2D- g -C 3 N 4 NS, were described in our previous works and briefly presented in the Supporting Information. − …”

Section: Methodsmentioning

confidence: 99%

Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C₃N₄ Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

Kuila,

Ghosh,

Chatterjee

et al. 2024

Energy Fuels

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The excessive cost and scarcity of the noble-metal catalysts needed for catalyzing the bifunctional oxygen evolution and reduction reactions (OER and ORR) for metal-air batteries limit the commercialization of clean-energy technologies. In this work, gadolinium-2-methylimidazole (Gd-2-mim) metal− organic framework-functionalized 2D-graphitic carbon nitride (2D-g-C 3 N 4 ) heterostructure (Gd-2-mim/2D-g-C 3 N 4 ) as a bifunctional electrocatalyst is demonstrated for OER and ORR. The electrocatalyst is synthesized through mixing and coprecipitation methods. The structural, interfacial, thermal, and microstructural properties of the synthesized heterostructure are revealed through several characterizations. A stable nanoporous morphology with improved electrocatalytic active sites and enhanced specific surface area of Gd-2-mim/2D-g-C 3 N 4 exhibits the highest onset potential (0.85 V) and lowest charge transfer resistance (R ct = 96.2 Ω) for ORR and lowest overpotential (59 mV @10 mA cm −2 ) for OER with the highest turnover frequency (TOF = 0.42 s −1 ). A plausible bifunctional mechanism is portrayed based on the electrocatalytic reaction kinetics. The catalyst is capable of substituting the state-of-the-art electrocatalysts Pt/C and RuO 2 for ORR and OER respectively.

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“…The synthesis methods of catalysts, i.e., bulk- g -C 3 N 4 and 2D- g -C 3 N 4 NS, were described in our previous works and briefly presented in the Supporting Information. − …”

Section: Methodsmentioning

confidence: 99%

Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C₃N₄ Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

Kuila,

Ghosh,

Chatterjee

et al. 2024

Energy Fuels

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“…Hexagonal boron nitride (h-BN), layered double hydroxides (LDHs), graphene, and related materials like graphitic carbon nitride (g-C 3 N 4 ), transition metal dichalcogenides (TMDs), black phosphorus (BP), silicone, and MXenes are all regarded as fascinating materials because of their exceptional electronic, chemical, physical, mechanical, and optical properties. [22][23][24] New synthesis methods have shown promise for enabling scalable, low-cost production of these materials. 25,26 While over 100 potential MXene compositions have been hypothesized through computational models, to date, over 40 distinct MXene structures have been synthesized in the laboratory.…”

Section: Background On Energy Storage Technologiesmentioning

confidence: 99%

Progress and Prospects of MXene-Based Hybrid Composites for Next-Generation Energy Technology

Mohd Abdah,

Thakur

et al. 2023

J. Electrochem. Soc.

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MXenes are an emerging class of two-dimensional transition metal carbides and nitrides with metallic conductivity and hydrophilic surfaces. The discovery of MXenes has opened new possibilities for developing advanced hybrid composites for energy storage and conversion applications. This review summarizes recent advances in developing MXene-based hybrid composites, including their synthesis, characterization, and electrochemical performance. The heterostructure of MXenes with nanocarbons, metal oxides, polymers, and other nanomaterials can overcome the limitations of pristine MXenes and lead to enhanced lithium/sodium-ion storage, pseudocapacitive performance, and electrocatalytic activity. Various fabrication techniques have been employed to synthesize MXene composites with controlled nanostructures, morphology, and interfacial properties. Characterization by microscopy, spectroscopy, and electrochemical methods has shed light on structure-property relationships in these materials. As electrode materials, properly designed MXene hybrids have achieved high specific capacity, excellent rate capability, and long-term stability. The review also discusses strategies for further improving MXene composite energy storage performance, as well as emerging applications such as thermoelectrics and photocatalysis. Continued research to understand interfacial effects and optimize MXene heterostructures holds promise for developing next-generation energy storage technologies.

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“…Because of their low thickness, 2D layered materials are considered to be less stable . A high surface area, optical interaction, and an exclusive bandgap structure make 2D layered materials effective for use in fields such as nonlinear optics, optical modulation, catalysis, photodetectors, batteries, supercapacitors, and drug delivery . Black phosphorus, graphene, transition metal dichalcogenides, MXenes, topographical insulators, metal–organic frameworks, and graphitic carbon nitride (g-C 3 N 4 ) are known as 2D layered materials …”

Section: Introductionmentioning

confidence: 99%

Green Fluorine-Confined 2D layered Graphitic Carbon Nitride (g-C₃N₄) Nanosheets for Electrocatalysts and Photocatalysts toward the Detection and Degradation of Metol Drugs in Wastewater

Vasu

Ravi

Subramaniyam

et al. 2023

ACS Appl. Eng. Mater.

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The "To carry two faces under one hood" technique is used in this article to study how hazardous environmental contaminants are removed by photocatalysis and electrochemistry. By the thermal decomposition approach, nanosheets of F-doped graphitic carbon nitride (g-C 3 N 4 ) are synthesized using varying weight percentages of NH 4 F (1, 2, and 3 wt %). Various characterization techniques are applied to study the physiochemical properties of the synthesized F/g-C 3 N 4 nanosheets. The electrochemical characteristics of F/g-C 3 N 4 nanosheets are investigated by decorating a screen-printed carbon electrode (SPCE) with F/g-C 3 N 4 and successfully utilizing it for the detection of the organic water effluent metol. F/g-C 3 N 4 exhibits excellent sensitivity, stability, repeatability, and reproducibility toward the detection of metol with a lower limit of detection (7.483 nM) in the linear range of 0.2−40 μM. The real-time potential application of the decorated electrode for the detection of metol in various real water samples shows excellent recovery percentages. F/g-C 3 N 4 (2 wt %) has a lower band gap with better charge-transfer properties when compared to bulk g-C 3 N 4 and F/g-C 3 N 4 (1 and 3 wt %). A higher photocatalytic degradation efficiency of 80% is obtained within a short treatment time (60 min) using F2/g-C 3 N 4 . The visible light-assisted metol degradation process follows pseudo-firstorder kinetics. Moreover, gas chromatography−mass spectrometry (GC−MS) analysis further validates the degradation response and proposes potential degradation pathways. Investigating the toxicity of the treated water using green gram seeds shows that the treated water is safe to consume and does not contain any toxins. In this respect, F/g-C 3 N 4 nanosheets are outstanding electrophotocatalytic materials that are extremely effective and have a wide range of applications.

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Chemisorption of gadolinium ions on 2D-graphitic carbon nitride nanosheet for enhanced solid-state supercapacitor performance

Cited by 23 publications

References 32 publications

Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C₃N₄ Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C₃N₄ Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

Progress and Prospects of MXene-Based Hybrid Composites for Next-Generation Energy Technology

Green Fluorine-Confined 2D layered Graphitic Carbon Nitride (g-C₃N₄) Nanosheets for Electrocatalysts and Photocatalysts toward the Detection and Degradation of Metol Drugs in Wastewater

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Chemisorption of gadolinium ions on 2D-graphitic carbon nitride nanosheet for enhanced solid-state supercapacitor performance

Cited by 23 publications

References 32 publications

Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C3N4 Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C3N4 Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

Progress and Prospects of MXene-Based Hybrid Composites for Next-Generation Energy Technology

Green Fluorine-Confined 2D layered Graphitic Carbon Nitride (g-C3N4) Nanosheets for Electrocatalysts and Photocatalysts toward the Detection and Degradation of Metol Drugs in Wastewater

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Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C₃N₄ Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

Interfacial Coupling of Gadolinium-2-methylimidazole Metal Organic Framework and 2D-g-C₃N₄ Nanosheet for Synergistically Enhanced Bifunctional Oxygen Electrocatalysis

Green Fluorine-Confined 2D layered Graphitic Carbon Nitride (g-C₃N₄) Nanosheets for Electrocatalysts and Photocatalysts toward the Detection and Degradation of Metol Drugs in Wastewater