Synthesis of graphene nano-ribbons inside carbon nanotubes (based on nano-micro-electronics PHD
Researcher and author: PhD student Afshin Rashid
Note: In this method, graphene nanofibers are created directly inside single-walled carbon nanotubes.
Graphene is a substance that is highly effective due to its unusual properties. This material has a very high electrical and thermal conductivity. With the transformation of graphene into thin strips called nano-ribbons, this material has different properties. Nano-ribbons have many practical potentials in the nanotechnology industry . However, producing these structures is not an easy task. Graphene is a two-dimensional form of carbon atoms with sp2 hybrid and three-dimensional SP3 that is located in a hexagonal lattice structure and is known as the thinnest material with a thickness of 1.95 nm. Graphene plates are formed by the juxtaposition of carbon atoms . . On a graphene plate, each carbon atom is bonded to nine other carbon atoms. These three links are on one page The angles between them are equal to 421. In this case, the carbon atoms are in a position to create a network of regular hexagons in the ideal state. The length of the carbon-carbon bond in graphene is about 1.412 nm. On a graphene plate, each carbon atom has an orbital outside the plate. This orbital is a good place to connect with some functional groups as well as hydrogen atoms. The bond between the carbon atoms on the covalent plate is very strong.
Graphite is a well-known carbon material that is formed by the overlapping of graphene layers and the formation of a regular structure. Another way to produce graphene is to separate the graphite layers so that they become graphene. What keeps the graphene layers on top of each other is the bonds between the van der Waals. This link is very weak. So graphene layers can easily slide on top of each other. In this method, graphene oxide is first created and then converted to graphene by reducing agents. In this method, mainly the reduction of graphene oxide is not done completely, so instead of graphene, reduced graphene oxide is obtained.
Oxidation of graphite layers in this way significantly reduces the interaction between them and increases the distance between the layers. Graphene oxide and reduced graphene oxide obtained in this way have many structural and chemical defects, so this method is a suitable method for synthesizing reduced graphene oxide and graphene oxide. Graphene has unique properties due to its special structure. Graphene is one of the strongest known materials in terms of strength . Graphene is 211 times stronger than steel. Some of the special properties of graphene that make it a popular ingredient .
Conclusion :
Crowne molecules can be used to synthesize graphene, but they need to be aligned on one plate to provide the reaction conditions. The interior of the carbon nanotubes seems to be suitable for this purpose. Metal nanoparticles inside insulating nanotubes are insulating wires. These wires can be inserted directly into nanotubes.