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Graphene can be created by cutting open carbon nanotubes. [99] In one such method multi-walled carbon nanotubes are cut open in solution by action of potassium permanganate and sulfuric acid. [100] In another method graphene nanoribbons were produced by plasma etching of nanotubes partly embedded in a polymer film. [101]
In 2002, Robert B. Rutherford and Richard L. Dudman filed for a patent in the US on a method to produce graphene by repeatedly peeling off layers from a graphite flake adhered to a substrate, achieving a graphite thickness of 0.00001 inches (0.00025 millimetres). The key to success was the ability to quickly and efficiently identify graphene ...
Epitaxial graphene growth on silicon carbide (SiC) by thermal decomposition is a method to produce large-scale few-layer graphene (FLG). Graphene is one of the most promising nanomaterials for the future because of its various characteristics, like strong stiffness and high electric and thermal conductivity. Still, reproducible production of ...
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First introduced in 2008, chemical vapor deposition emerged as one of the most popular methods for graphene exfoliation. This method utilizes a transition metal film as a base layer and exposes it to hydrocarbons at high temperatures(900-1000°C) and ambient pressure. During the process, hydrocarbon decomposes, and carbon atoms form one to ten ...
Graphene is even being used to make solar cells produce electricity in the rain, leading us to believe the most amazing graphene-based gadgets have yet to come.
Many teams are looking into ways of using graphite oxide as a shortcut to mass production of graphene. So far, the materials produced by these methods have shown to have more defects than those produced directly from graphite. Hummers' method remains a key point of interest because it is an easy method of producing large quantities of graphite ...