Graphene is a 1 atom thick sheet of carbon atoms arranged in a hexagonal fashion.
Carbon Nanotubes are cylindrically rolled sheets of graphene.
Graphene is a 1 atom thick sheet of carbon atoms arranged in a hexagonal fashion.
Carbon Nanotubes are cylindrically rolled sheets of graphene.
Graphene is a single atomic layer of crystalline graphite and enlisted as a 2D material and CNT can be thought of as a rolled sheet of graphene in a hexagonal lattice of carbon geometry. Compared to graphene CNT's are large mesoscopic molecules with high aspect ratios.
the main difference is Dimensionality of the materials
Graphene/Graphene oxide is 2D where as the CNTs are 0D ( Rolled sheets of graphene in hexagonal lattice fashion) in nature.
Monolayer layer graphene (2D) and single walled carbon nanotube (1D), both are allotropes of carbon. The graphene can be rolled into carbon nanotubes.
The main difference is, the Graphene is a single thin layer 2D film, while the carbon nanotubes is a thin film rolled like a 3D tube or cylinder .
Graphene is defined as a semi-metal and is an allotrope of carbon. It is a 2D, single layer of graphite, made of 6 carbon molecules join with others to form a perfect hexagonal lattice-shaped structure.
It is also extremely pilable and elastic. Since it is only one-atom-thick, graphene is nearly transparent however it is also an excellent electrical and thermal conductor.
On the other hand, Carbon nanotubes, or CNTs, are an allotropic form of carbon, which develops in a cylindrical shape. It is basically 3D. Similar to graphene, the carbon nanotubes are also extremely strong and has excellent conductivity for heat and electricity. They also have a higher aspect ratio than any other conventional material in use today.
First of all Hussen Mohammed , please note that you are treating families of materials. Not all graphene and MWCNTs are the same. Actually there are very peculiar and dependent on the synthesis method. Mind yourself that. There is no magic or simplistic comparison
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Dear Hussen Mohammed,
CNT
They are 1 dimensional allotropes of carbon. Depending on the nature of folding of sheets along different axes they are majorly of 3 types- Zigzag, Armchair and Chiral. They can be both multi-walled and single-walled. CNT can be used as lubricants. Example buckyballs are good lubricants because of their spherical shape. Their hollow structure could make them useful for delivering medicine in the future. Carbon nanotubes are very strong and light, and can act as semiconductors or conductors.
Graphene
Graphene is classified as a semi-metal and is an allotrope of carbon. It is a 2-dimensional, single layer of graphite,made of 6 carbon molecules join with others to form a perfect hexagonal lattice-shaped structure. Graphene is also known as the ‘wonder material,’ due to its various impressive properties. It is not only the most durable material known to man but is also extremely malleable and elastic. Since it is only one-atom-thick, graphene is nearly transparent however it is also an excellent electrical and thermal conductor.
Graphene forms a polymer of hexagonal shaped carbon atoms where each carbon atom is bonded to four other carbon atoms and has a delocalized electron. It is the basic of all graphitic carbon materials. Twisting and warping of the graphene sheet results in formation of 0-dim Fullerenes. Rolling of the sheet along an axis results in formation of 1-dim Carbon Nanotubes. Stacking the graphene layers will give us the 3-dim Graphite.
Differences
Carbon nanotubes (CNTs) and graphene are allotropes of carbon which have unique electrical, mechanical & other physical properties. Graphene is a two-dimensional material, basically a single layer of graphite, with carbon atoms arranged in a hexagonal, honeycomb lattice.
**Main differences
1. CNT is 1D allotropes of carbon and Graphene is 2D single layer of graphite. Stacking the graphene layers can give us the 3-dim Graphite.
2. The main difference is, the Graphene is a single thin layer 2D film, while the carbon nanotubes in a thin film rolled like a 3D tube or cylinder. Although they share numerous similar properties, each has its unique uses and applications.
3. Strength wise they differentiate as “Graphene is far superior to carbon nanotubes or any other known nanofiller in transferring its exceptional strength and mechanical properties to a host material.”
Ashish
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