Few-layer graphene by assisted-exfoliation of graphite with layered silicate

Castarlenas, Sonia; Rubio, César; Mayoral, Álvaro; Téllez, Carlos; Coronas, Joaquı́n

doi:10.1016/j.carbon.2014.02.044

Cited by 33 publications

(17 citation statements)

References 34 publications

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“…It possesses excellent thermal stability and electric conductivity, which have led to its widespread application in such varied areas as electrode materials, refractory materials, and steelmaking (Takeuchi et al 2014). Besides, graphite is considered to be an ideal precursor for the production of few-layered graphene sheets, which have attracted increasing interest in recent years (Castarlenas et al 2014;Amiri et al 2017). However, natural graphite is not a renewable resource.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Graphitization of Cellulose Using Nickel as Catalyst

Chen¹,

Sun²,

Wang³

et al. 2018

BioResources

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Section: Introductionmentioning

confidence: 99%

Catalytic Graphitization of Cellulose Using Nickel as Catalyst

Chen¹,

Sun²,

Wang³

et al. 2018

BioResources

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“…Effective dispersion and breakage of agglomerates of SiC nanoparticles in A356 matrix has been reported due to ultrasonic treatment ( Ref 11,16,17). Similar studies in Mg/SiC nanocomposites showed a better yield and tensile properties with the assistance of ultrasonic treatment (Ref [18][19][20][21][22] particles can be tailored into different forms under ultrasonic treatment confined to medium characteristics (Ref [27][28][29][30][31].Therefore, the present work is focused to investigate the influence of ultrasonic melt treatment during synthesis of Al-2 vol.% graphite composites. The role of ultrasonic treatment time on dispersion of graphite particles and porosity has been examined.…”

Section: Introductionmentioning

confidence: 56%

Ultrasonic-Assisted Synthesis of Graphite-Reinforced Al Matrix Nanocomposites

Roshini

Nagasivamuni

Raj

et al. 2015

J. of Materi Eng and Perform

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A novel approach to produce Al-2 vol.% graphite nanocomposites using micron-sized graphite particles has been reported using conventional stir casting technique combined with ultrasonic treatment. Microstructural observations indicate that the visible agglomerations and porosities are significantly reduced after ultrasonic treatment. Transmission electron microscopy studies of ultrasonic-treated composites reveal that the size of the graphite particles is reduced substantially and its morphology is transformed into flake type structures. The width of the graphite flakes is reduced markedly with the increase in ultrasonic processing time and it is found to be in the range of 100-120 nm with an aspect ratio of 8.83 after 5 min of ultrasonication. Added to that, considerable improvement in the hardness values are noted for ultrasonic-treated Al-2 vol.% graphite composites when compared to conventional untreated composites. The mechanism behind the significant reduction in graphite particle size and porosity, uniform distribution of graphite particles and hardness increments are discussed.

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“…The noticeable dissimilarity between the spectra of graphite nanoplatelets and Ag-graphene was the position and intensity of the 2D band. The ratio of intensity between G and 2D band (I G /I 2D ) differentiates between less exfoliated graphite and few-layered graphene layers29. A slight shift to a lower wave number and small increase in intensity of the 2D band were observed in case of Ag-graphene i.e.…”

Section: Resultsmentioning

confidence: 99%

Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene

Hazarika

Deka

Kim

et al. 2017

Sci Rep

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We synthesized Ag nanoparticle-decorated multilayered graphene nanosheets (Ag-graphene) from graphite nanoplatelets and silver nitrate through 90–100 s of microwave exposure, without the use of any mineral acids or harsh reducing agents. Fe nanoparticle-decorated carbon nanotubes (Fe-CNTs) were grown on polypyrrole (PPy) deposited on woven Kevlar fibre (WKF), using ferrocene as a catalyst, under microwave irradiation. Fe-CNTs grown on WKF and Ag-graphene dispersed in polyester resin (PES) were combined to fabricate Ag-graphene/Fe-CNT/PPy-coated WKF/PES composites by vacuum-assisted resin transfer moulding. The combined effect of Fe-CNTs and Ag-graphene in the resulting composites resulted in a remarkable enhancement of tensile properties (a 192.56% increase in strength and 100.64% increase in modulus) as well as impact resistance (a 116.33% increase). The electrical conductivity significantly increased for Ag-graphene/Fe-CNT/PPy-coated WKF/PES composites. The effectiveness of electromagnetic interference shielding, which relies strongly on the Ag-graphene content in the composites, was 25 times higher in Ag-graphene/Fe-CNT/PPy-coated WKF/PES than in neat WKF/PES composites. The current work offers a novel route for fabricating highly promising, cost effective WKF/PES composites through microwave-assisted synthesis of Fe-CNTs and Ag-graphene.

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Few-layer graphene by assisted-exfoliation of graphite with layered silicate

Cited by 33 publications

References 34 publications

Catalytic Graphitization of Cellulose Using Nickel as Catalyst

Catalytic Graphitization of Cellulose Using Nickel as Catalyst

Ultrasonic-Assisted Synthesis of Graphite-Reinforced Al Matrix Nanocomposites

Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene

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