Mechanochemical synthesis of graphene nanoplatelets from expanded graphite compound

Melezhik, A. V.; Першин, В. Ф.; Memetov, N. R.; Ткачев, А. Г.

doi:10.1134/s1995078016040121

Cited by 22 publications

(8 citation statements)

References 25 publications

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“…[20] They are considered 2D material with a thickness between 3 and 100 nm, although some materials with higher thickness such as 250 nm are commercially available. [21] There are various methods employed for obtaining these GNPs such as ball milling, [22,23] electrochemical exfoliation, [24] mechanochemical exfoliation, [25] high-shear mixing, sonication, [26] liquid-phase exfoliation, [27] among others. However, these methods usually cause structural damages in the graphene sheets or can generate impurities in the final product and also generate chemical substance as waste.…”

Section: Chemistryselectmentioning

confidence: 99%

A Green and Easy Large Scale Method for Obtaining Graphene Nanoplatelets by Steam Explosion and Ultrasonic Exfoliation

et al. 2022

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A novel physical process to obtain graphene nanoplatelets consisting of two principal steps, steam explosion and ultrasonic exfoliation, is proposed. This approach requires only water; nevertheless, the pressure and temperature conditions in the steam explosion equipment contribute to the delamination of the graphite complemented with an ultrasonic step. Moreover, two kinds of source material were tested: highly pyrolytic oriented graphite and a lower oriented graphite. Infrared and energy dispersive x‐ray spectroscopies analysis confirmed additional functional groups were not generated in any of the treated materials. X‐ray diffraction showed that graphene nanoplatelets obtained in this work are conformed by 20–30 nm of thickness, also corroborated with atomic force microscopy. According to Raman results, graphene nanoplatelets possess a high structural quality which is similar to the initial graphite. Hence, this process represents a viable option to obtain graphene nanoplatelets through an easy, green and large‐scalable route.

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Section: Chemistryselectmentioning

confidence: 99%

A Green and Easy Large Scale Method for Obtaining Graphene Nanoplatelets by Steam Explosion and Ultrasonic Exfoliation

et al. 2022

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“…The mechanochemical exfoliation of 3-D graphite materials is one of the conventional methods for re nement of ultra-physiochemical properties graphene nanomaterials useful in engineering or biomedical applications of nanotechnology [22]. The elastic moduli and intrinsic strength of freestanding monolayer graphene nanomaterials is measured assuming a nonlinear relationship to third order elastic stiffness using atomic force microscope [23].…”

Section: Mechanochemical and Thermal Propertiesmentioning

confidence: 99%

NEMS/MEMS carbon functionalization: A prospective expression

Tomar

2022

Preprint

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Nanotechnology is an emerging scientific domain for innovative application in biomedical, electronics, bio functionalities, tribology, and energy generation. Nano cellulose, carbon black, black carbon, carbon dots, and graphene family members are functional structures due to unique physiochemical properties and electron transfer efficacy. The transformation of physiochemical or morphological properties of carbon nanoparticles may lead to biological activities for evolution of reactive oxygen species. Disruption of biological membrane due to supramolecular adhesion of hydroxyl, carboxyl, and amino functional groups is a biomechanical mechanism of cytotoxicity of carbon nanomaterials. The surface tension and Gibbs free energy of bio-membrane is affected by the loading of carbon nanomaterials.

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“…A prototype of the method of obtaining the GNPs is described in [1][2][3]. According to this method, graphene nanoplatelets were received by exfoliation of expanded graphite materials, which were obtained by intercalation of the crystalline (natural) graphite GSM-1 with peroxo-sulfate compounds.…”

Section: Methods Of Obtaining Gnpsmentioning

confidence: 99%

Development of Technical and Technological Solutions in the Field of Multilayer Graphene for Creating Electrode Nanomaterial Energy Storage Devices

Memetov

Schegolkov

Solomakho

et al. 2017

Proceedings of the Scientific-Practical Conference "Research and Development - 2016"

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The technologies of production of graphene nanoplatelets and nanocomposite materials (nano-, meso-porous carbon)/(graphene nanoplatelets, carbon nanotubes) were developed. The nanocomposite materials obtained possess specific surface area as high as 2000-3000 m 2 /g and more, and exceed the existing carbon materials by parameters of surface area, pore volume, and pore size. Supercapacitors based on the nanocomposite materials developed were made and tested.

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Mechanochemical synthesis of graphene nanoplatelets from expanded graphite compound

Cited by 22 publications

References 25 publications

A Green and Easy Large Scale Method for Obtaining Graphene Nanoplatelets by Steam Explosion and Ultrasonic Exfoliation

A Green and Easy Large Scale Method for Obtaining Graphene Nanoplatelets by Steam Explosion and Ultrasonic Exfoliation

NEMS/MEMS carbon functionalization: A prospective expression

Development of Technical and Technological Solutions in the Field of Multilayer Graphene for Creating Electrode Nanomaterial Energy Storage Devices

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