Graphene Oxide and Its Applications

Graphene Oxide Powder (2-5 Layer, Dia:7,5 um, SA: 420 m2/gr) is a two dimensional material. It is the oxidized form of graphene, with O functional groups decorating the sp2 C basal plane.

Due to the presence of the oxygen functional groups, graphene oxide is also hydrophilic and it can be dispersed in water solution, contrary to graphene which is hydrophobic. So this property of graphene oxide is very important when mixing the material with ceramic or polymer matrixes when trying to improve their electrical and mechanical properties.

The size of the graphene oxide ﬂakes can be also tuned and varied from a few nm to mm. The tunability of both its chemical composition and ﬂakes size makes graphene oxide an appealing material in many ﬁelds: electronics (sensors and transparent conductive ﬁlms), composites materials, clean energy devices, biology and medicine.

Graphene oxide has an extremely high surface area; therefore, these materials are considered for usage as electrode materials in batteries and double-layered capacitors, as well as fuel cells and solar cells.

Graphene oxide can be used as biosensors. Since graphene oxide is a fluorescent material, it can be used for biosensing applications, for early disease detection, and even for assisting in finding cures for cancer and detecting biologically relevant molecules. Graphene oxide has been successfully used in fluorescent-based biosensors for the detection of DNA and proteins with a promise of better diagnostics.

Graphene oxide is also used in the biomedical field, particularly in drug-delivery systems. Graphene oxide is likely superior to many other anticancer drugs because it does not target healthy cells, only tumors, and has a low toxicity.

In coating technology graphene oxide can be used also. Multilayer graphene oxide films are optically transparent and impermeable under dry conditions. Exposed to water (or water vapor), they allow passage of molecules smaller than a certain size. Glassware or copperplates covered with such a graphene “paint” can be used as containers for corrosive acids. Graphene-coated plastic films could be used in medical packaging to improve shelf life.

Graphene oxide mixes readily with many polymers, forming nanocomposites, and greatly enhances the properties of the original polymer, including elastic modulus, tensile strength, electrical conductivity, and thermal stability. In its solid form, graphene oxide flakes tend to attach to one another, forming thin and extremely stable paper-like structures that can be folded, wrinkled, and stretched. Such free-standing graphene oxide films are considered for applications including hydrogen storage applications, ion conductors, and nanofiltration membranes.

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Multi Walled Carbon Nanotube Dispersions

Carbon nanotubes (CNTs) have attracted enormous attention in recent years due to its unique physical, electronic, optical and potential applications in materials science and nanotechnology. The van der Waals interaction between tubes, however, makes CNTs aggregate in most organic solvents and aqueous solutions, which is the major limitation of their practical applications.Various approaches have been studied to alter the CNT surface to promote the dispersion of individual nanotubes and prevent their reaggregation. On the basis of this widely accepted viewpoint, numerous techniques such as covalent bonding, surfactant coating and polymer wrapping have been developed for surface modification or sidewall functionalization.These methods, however, are complicated, time-consuming and cause permanent damage to the CNT structure and properties of the surface, which produces residues of the dispersion agent for the final product. Figure: Single Walled Carbon Nanotube (SWCNT) It has re

Carbon Nanotube Threads

Since its discovery, carbon nanotube (CNT) has attracted many interests in different technology fields due to its extraordinary properties. Properties such as, high strength, great electrical and thermal conductivity, light weight and flexibility made CNT one of the best materials for wide range of applications. However, from its name it can be understood that CNT is a nanoscale material which is very small to be applied for the production of daily products. Researchers all around the world are working on finding methods and techniques which could produce new materials with the extraordinary properties of CNT. Image retrieved from: https://worldindustrialreporter.com/strong-light-flexible-carbon-nanotubes-threads-with-ultrahigh-conductivity/ One of these research is focusing on the production of high strength threads that can be used in the manufacturing of fabrics, cables and ropes. An international group of scientists were able to produce a flexible conductive thread that i

Magnesium Oxide Nanoparticles/Nanopowder and Applications

General Information about Magnesium Oxide Magnesium oxide which has the chemical formula of MgO, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of Magnesium. It is a white powder at room temperature. Magnesium Oxide has very high melting point (2825 o C) and boiling point (3600 o C). Magnesium Oxide Nanoparticles/Nanopowder and Usage Areas Magnesium Oxide nanoparticles/nanopowder can be used in many different areas. For example Magnesium Oxide nanoparticles/nanopowder are used as a fire retardant for chemical fiber and plastics trades. For making crucible, smelter, insulated conduit, electrode bar, and electrode sheet Magnesium Oxide Nanoparticles/Nanopowder can be used as electric insulating material. Magnesium Oxide nan

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