Synthesis of Graphene on Ni/SiC Structure

Macháč, Petr; Hrebicek, Tomas

doi:10.1515/jee-2016-0021

Cited by 4 publications

(3 citation statements)

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“…The text of this chapter was taken from the publication of the author and his other colleagues [25,26,[31][32][33]54]. The chapter is focused on graphene preparation by silicidation of the metal/SiC structure, where nickel and cobalt were studied in the form of the metal.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis of Graphene on Metal/SiC Structure

Macháč¹

2017

Graphene Materials - Structure, Properties and Modifications

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The chapter deals with the synthesis of graphene on metal/SiC substrates. The graphene synthesis is pursued at a relatively low temperature. The method can be used for the graphene transfer from SiC to dielectric materials. Annealing of the structure results in a chemical reaction of a metal with SiC forming silicides and carbon-rich products at the boundary between metal and silicon carbide. Carbon atoms segregate at the top of metal/ metal silicide layer during the cooling period of the process. The chapter is divided into the following sections: Introduction, Structure preparation, Graphene preparation from the structure Ni/SiC, Graphene preparation from the structure Co/SiC, Application of other metals, Influence of additive materials, and Conclusion.

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Section: Resultsmentioning

confidence: 99%

“…Growth of graphene films was done on a set of Ni/SiC structures with the different thickness of nickel layers (1,5,10,50,200, and 300 nm) and in the different type of thermal forming [25,26]. Raman spectra were measured for all samples after annealing.…”

Section: Graphene Preparation From the Structure Ni/sicmentioning

confidence: 99%

Synthesis of Graphene on Metal/SiC Structure

Macháč¹

2017

Graphene Materials - Structure, Properties and Modifications

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“…Graphene can be synthesized via chemical vapor deposition [9], mechanical exfoliation [10], and annealing single crystal SiC [11]. However, these techniques have a number of disadvantages, including high power consumption, limited output, the use of explosives materials, high manufacturing costs, and instrument restrictions that prevent them from being used on a wide scale.…”

Section: Introductionmentioning

confidence: 99%

The Biogenic Synthesis of Reduced Graphene Oxide using Hibiscus sabdariffa L. as Natural Precursor

Albert¹,

Tan²,

Teh³

et al. 2021

Preprint

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Owing to their extraordinary properties, carbon-based nanomaterials are gaining traction in biomedicine. Green synthesis is the cost-effective method for fabricating carbon-based nanomaterials due to its rapidity, renewable nature, and sustainability. This study emphasis on the graphene oxide (GO) reduction using a simple one-pot technique that does not require the use of toxic reducing agents. This article reports the green synthesis of reduced graphene oxide (RGO) using Hibiscus sabdariffa L. calyxes extract as the natural reducing agent. Additionally, this article also provides analysis RGO using X-ray diffraction (XRD), UV-Visible spectroscopy (UV-Vis), and Raman spectroscopy. XRD result showed that the GO peak at 11o diminished, and a new hump appear at 22o indicating that the GO is fully reduced when it is refluxed for 6 hours, at 100oC with 1:3 ratio of GO:PE. The UV-Vis data indicated absorption peak of GO (237 nm) and RGO (265 nm) at distinct locations. This finding shed new light on the enormous potential of Hibiscus sabdariffa L. calyxes extract for green GO reduction. As a result, this environmentally friendly method can help reduce dependence on chemical materials.

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