IAU Researchers Economically Produce Graphene Quantum Dot and Oxide

Sunday, July 23, 2017 - 13:29

Researchers of Nanotechnology Research Center of South Tehran Islamic Azad University have produced economical Graphene Quantum Dot and Graphene oxide.

According to an ANA report, a faculty member of Medical Engineering department of South Tehran IAU, Dr. Laleh Maleknia and a researcher of Nanotechnology Research Center of South Tehran IAU, Ahmad Dehdast economically produced Graphene Quantum Dot and Graphene oxide, reducing the production costs and also creating commercially viable possibilities.

Graphene is an allotrope of carbon in the form of a two-dimensional, atomic-scale, hexagonal lattice in which one atom forms each vertex. In simple terms, it is a thin layer of pure carbon; it is a single, tightly packed layer of carbon atoms that are bonded together in a hexagonal honeycomb lattice. In more complex terms, it is an allotrope of carbon in the structure of a plane of sp2 bonded atoms with a molecule bond length of 0.142 nanometres. Layers of graphene stacked on top of each other form graphite, with an interplanar spacing of 0.335 nanometres.

It is the thinnest compound known to man at one atom thick, the lightest material known (with 1 square meter coming in at around 0.77 milligrams), the strongest compound discovered (between 100-300 times stronger than steel and with a tensile stiffness of 150,000,000 psi), the best conductor of heat at room temperature (at (4.84±0.44) × 10^3 to (5.30±0.48) × 10^3 W·m−1·K−1) and also the best conductor of electricity known (studies have shown electron mobility at values of more than 15,000 cm2·V−1·s−1). Other notable properties of graphene are its unique levels of light absorption at πα ≈ 2.3% of white light, and its potential suitability for use in spin transport.

Maleknia noted that due to the applying specific method, low production costs is one the notable feature in this project. Dehdast also explained that beginning laboratory studies took six months and various methods of synthesizing were tested but favorable results were obtained from the last method which was completely economic.

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