Ultrasonic-Assisted Exfoliation of Graphitic Carbon Nitride and its Electrocatalytic Performance in Process of Ethanol Reforming

Chebanenko, Maria I.; Захарова, Н. В.; Lobinsky, A.A.; Попков, В.И.

doi:10.1134/s106378261912008x

Cited by 31 publications

(14 citation statements)

References 15 publications

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“…Besides, catalytic materials that do not contain expensive metal elements, such as graphite-like carbon nitride or g-C 3 N 4 , have a great potential for development [328]. This catalytic material can be obtained by simple thermolysis of urea, melamine, and other organic precursors in air and exhibits high, stable catalytic characteristics both in the processes of photocatalytic oxidation of organic substances [340,341] and in the electrocatalytic release of hydrogen [342]. FIG.…”

Section: Characteristics and Features Of Methods For The Synthesis Of New Nanostructured Catalystsmentioning

confidence: 99%

Personalized energy systems based on nanostructured materials

Коваленко¹,

Тугова²,

Попков³

et al. 2021

Nanosystems: Phys. Chem. Math.

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In this paper, the achievements, problems and prospects of creating personalized energy systems based on nanostructured materials are analysed. Various concepts of developing methods and ways of personalized energy provision for autonomous human survival in remote natural habitat, emergency situations of natural disasters and technogenic catastrophes when centralized power supply is unavailable or in an effort to reduce the economic and environmental costs of remote energy production and transportation are also considered. The possibilities and limitations of using traditional and renewable alternative energy sources, processes and devices for extracting, storing and converting their energy into the necessary consumer forms due to fundamental physical laws are discussed as well. The article covers the new nanostructured materials with special functional properties for personalized energy systems development. The mechanisms for formation of the required nanostructures in synthesized materials, especially those with a high content of fractal interfacial formations, are considered as well as methods for studying their structural and phase characteristics that determine the achievability of the specified parameters of model converters and energy storage devices.

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Section: Characteristics and Features Of Methods For The Synthesis Of New Nanostructured Catalystsmentioning

confidence: 99%

Personalized energy systems based on nanostructured materials

Коваленко¹,

Тугова²,

Попков³

et al. 2021

Nanosystems: Phys. Chem. Math.

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“…This approach helps increase the phase purity of graphitic carbon nitride powder, decrease its energy band gap, change the morphology, and enhance the material’s specific surface area. For this reason, Chebanenko et al successfully prepared graphitic carbon nitride (g-C 3 N 4 ) by heating 10 g of urea at 550 °C in a quartz tube for 2 h; the resulting material was removed from the tube after cooling [ 9 ]. Subsequently, the material was added to distilled water and stirred for a few minutes with a magnetic stirrer’s aid.…”

Section: Preparation Of Graphitic Carbon Nitride (G-c 3 mentioning

confidence: 99%

“…Subsequently, the material was added to distilled water and stirred for a few minutes with a magnetic stirrer’s aid. The resulting white suspension was exposed to an ultrasonic disintegrator for 2 h. Consequently, the colloidal solution was dried in an oven at 100 °C to remove water molecules and annealed at 300 °C for half an hour to obtain the dry exfoliated g-C 3 N 4 nanopowder [ 9 ].…”

Section: Preparation Of Graphitic Carbon Nitride (G-c 3 mentioning

confidence: 99%

Graphitic Carbon Nitride: A Highly Electroactive Nanomaterial for Environmental and Clinical Sensing

Idris

Oseghe

Msagati

et al. 2020

Sensors

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Graphitic carbon nitride (g-C3N4) is a two-dimensional conjugated polymer that has attracted the interest of researchers and industrial communities owing to its outstanding analytical merits such as low-cost synthesis, high stability, unique electronic properties, catalytic ability, high quantum yield, nontoxicity, metal-free, low bandgap energy, and electron-rich properties. Notably, graphitic carbon nitride (g-C3N4) is the most stable allotrope of carbon nitrides. It has been explored in various analytical fields due to its excellent biocompatibility properties, including ease of surface functionalization and hydrogen-bonding. Graphitic carbon nitride (g-C3N4) acts as a nanomediator and serves as an immobilization layer to detect various biomolecules. Numerous reports have been presented in the literature on applying graphitic carbon nitride (g-C3N4) for the construction of electrochemical sensors and biosensors. Different electrochemical techniques such as cyclic voltammetry, electrochemiluminescence, electrochemical impedance spectroscopy, square wave anodic stripping voltammetry, and amperometry techniques have been extensively used for the detection of biologic molecules and heavy metals, with high sensitivity and good selectivity. For this reason, the leading drive of this review is to stress the importance of employing graphitic carbon nitride (g-C3N4) for the fabrication of electrochemical sensors and biosensors.

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“…The nanopowder of the initial graphitic carbon nitride (g-C 3 N 4 ) was synthesized by heat treatment of urea ((NH 2 ) 2 CO) under aerobic conditions. A detailed description of its synthesis procedure and preparation of a g-C 3 N 4 -based colloidal solution was previously given in [9,10]. After homogenization, 1.5 mg of magnesium acetate tetrahydrate (Mg(CH 3 COO) 2 •4H 2 O or Mg(Ac) 2 •4H 2 O) was dissolved in 10 ml of distilled water using magnetic stirring.…”

Section: Synthesis Proceduresmentioning

confidence: 99%

The effect of MgO additive on the g-C3N4 performance in electrochemical reforming of water-ethanol solution

Chebanenko¹,

Martinson²,

Мацукевич³

et al. 2020

Nanosystems: Phys. Chem. Math.

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In this work, a simple wet-chemical route was proposed to synthesize g-C 3 N 4 /MgO (5% wt.) with enhanced electrocatalytic activity toward hydrogen evolution from water-ethanol (10% vol.) solution. It was found that synthesized nanocomposite is a single phase and chemically pure, consisting of graphitic carbon nitride (g-C 3 N 4) and cubic magnesium oxide (MgO, periclase) with an average crystallite size of 15.5 nm and 9.5 nm, respectively. It was shown that magnesia nanoparticles are evenly distributed on the surface of g-C 3 N 4 nanosheets and uniform distribution of components is observed over the nanocomposite volume. It was found that this feature leads to an improvement in the electrocatalytic characteristics of the synthesized nanocomposite. So, the g-C 3 N 4 /MgO-coated electrode has an overpotential of −251 mV, which is better than for a g-C 3 N 4coated (−264 mV) or pure nickel (−293 mV) electrode. Moreover, the nanocomposite-based electrode posses a low Tafel slope (−106.7 mV/dec) and high cyclic and chronopotentiometry stability.

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Ultrasonic-Assisted Exfoliation of Graphitic Carbon Nitride and its Electrocatalytic Performance in Process of Ethanol Reforming

Cited by 31 publications

References 15 publications

Personalized energy systems based on nanostructured materials

Personalized energy systems based on nanostructured materials

Graphitic Carbon Nitride: A Highly Electroactive Nanomaterial for Environmental and Clinical Sensing

The effect of MgO additive on the g-C3N4 performance in electrochemical reforming of water-ethanol solution

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