What is Graphene Oxide?
Graphene is a material made of carbon atoms that are bonded together in a repeating pattern of hexagons. Graphene is so thin that it is considered two dimensional. Graphene is considered to be the strongest material in the world, as well as one of the most conductive to electricity and heat. Graphene has endless potential applications, in almost every industry (like electronics, medicine, aviation and much more).
As graphene is expensive and relatively hard to produce, great efforts are made to find effective yet inexpensive ways to make and use graphene derivatives or related materials. Graphene oxide (GO) is one of those materials - it is a single-atomic layered material, made by the powerful oxidation of graphite, which is cheap and abundant. Graphene oxide is an oxidized form of graphene, laced with oxygen-containing groups. It is considered easy to process since it is dispersible in water (and other solvents), and it can even be used to make graphene. Graphene oxide is not a good conductor, but processes exist to augment its properties. It is commonly sold in powder form, dispersed, or as a coating on substrates.
Graphene oxide is synthesized using four basic methods: Staudenmaier, Hofmann, Brodie and Hummers. Many variations of these methods exist, with improvements constantly being explored to achieve better results and cheaper processes. The effectiveness of an oxidation process is often evaluated by the carbon/oxygen ratios of the graphene oxide.
Graphene oxide uses
Graphene Oxide films can be deposited on essentially any substrate, and later converted into a conductor. This is why GO is especially fit for use in the production of transparent conductive films, like the ones used for flexible electronics, solar cells, chemical sensors and more. GO is even studied as a tin-oxide (ITO) replacement in batteries and touch screens.
Graphene Oxide has a high surface area, and so it can be fit for use as electrode material for batteries, capacitors and solar cells. Graphene Oxide is cheaper and easier to manufacture than graphene, and so may enter mass production and use sooner.
GO can easily be mixed with different polymers and other materials, and enhance properties of composite materials like tensile strength, elasticity, conductivity and more. In solid form, Graphene Oxide flakes attach one to another to form thin and stable flat structures that can be folded, wrinkled, and stretched. Such Graphene Oxide structures can be used for applications like hydrogen storage, ion conductors and nanofiltration membranes.
Graphene oxide is fluorescent, which makes it especially appropriate for various medical applications. bio-sensing and disease detection, drug-carriers and antibacterial materials are just some of the possibilities GO holds for the biomedical field.
Buy Graphene Oxide
Graphene oxide is relatively affordable and easy to find, with many companies that sell it. It does, however, get confusing since different companies offer products that vary in quality, price, form and more - making the choice of a specific product challenging. If you are interested in buying GO, contact Graphene-Info for advisement on the right GO for your exact needs!
The latest graphene oxide news:
A Washington State University (WSU) research team recently showed that used single-use masks, of the kind made ubiquitous in the pandemic, can be incorporated into a cement mixture (with the help of graphene oxide) to create stronger, more durable concrete. The team found that the mixture using mask materials was 47% stronger than commonly used cement after a month of curing.
“These waste masks actually could be a valuable commodity if you process them properly,” said Xianming Shi, professor and interim chair of the Department of Civil and Environmental Engineering and the corresponding author on the paper. “I’m always looking out for waste streams, and my first reaction is ‘how do I turn that into something usable in concrete or asphalt?’”
Today we published new versions of all our graphene market reports. Graphene-Info provides comprehensive niche graphene market reports, and our reports cover everything you need to know about these niche markets. The reports are now updated to April 2022.
- The advantages using graphene batteries
- The different ways graphene can be used in batteries
- Various types of graphene materials
- What's on the market today
- Detailed specifications of some graphene-enhanced anode material
- Personal contact details into most graphene developers
The report package provides a good introduction to the graphene battery - present and future. It includes a list of all graphene companies involved with batteries and gives detailed specifications of some graphene-enhanced anode materials and contact details into most graphene developers. Read more here!
Researchers from Moscow Institute of Physics and Technology, Joint Institute for High Temperatures of the Russian Academy of Sciences, Skolkovo Institute of Science and Technology, Saint Petersburg State Marine Technical University, Institute of Nanotechnology of Microelectronics of the Russian Academy of Sciences, Lomonosov Moscow State University, Bauman Moscow State Technical University and Emanuel Institute of Biochemical Physics of the Russian Academy of Sciences have found the reason why instead of burning down at high temperatures, graphene oxide opens the door to a promising and inexpensive graphene production method.
The search for a cheap and efficient route of graphene fabrication is still ongoing. Graphene reduction from graphene oxide by laser irradiation appears as a promising route: with graphene oxide produced from ordinary graphite using chemical methods, the laser-aided reduction technique holds much promise in terms of cost and controllability of the resulting material quality.
Researchers from China's Jiangsu University and Changzhou University have developed a non-ceramic solid-state electrolyte based on a graphene oxide (GO) aerogel framework filled with polyethylene oxide.
Li-ion batteries currently perform a key role in electric cars, but contain combustible liquid electrolytic materials which may pose major safety issues. The solid-state electrolyte (SSE) can replace the standard organic liquid electrolyte and is predicted to address safety issues such as leaking, heat runaway, and even explosions during operation.
Researchers from China’s Harbin Institute of Technology have 3D printed a soft robot from graphene-oxide that is capable of moving backward and forwards when exposed to moisture.
The scientists combined Direct Ink Writing (DIW) 3D printing and constrained drying techniques to fabricate the soft robot, and were able to overcome the porosity, shrinkage and structure uniformity challenges previously observed when 3D printing graphene-oxide objects.