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:
MIT-led research team uses graphene oxide foam in a device that can extract uranium and other heavy metals from tap water.
Some kinds of water pollution, such as algal blooms and plastics that foul various bodies of water, are found in plain sight. However, other contaminants are not quite as visible, which potentially makes them more dangerous. Among these invisible substances is uranium. Leaching into water resources from mining operations, nuclear waste sites, or from natural subterranean deposits, the element can reach taps worldwide.
UK's G2O Water Technologies has reported securing its first commercial contract for the enhancement of water filtration membranes with graphene oxide.
The Company explains that the advantages of using graphene oxide lie in the enhancement of membrane performance, as it mitigates the effects of fouling – one of the biggest challenges operators of membrane-based water filtration systems face. With a coating of graphene oxide, successfully developed and piloted by the company in the northwest of England in collaboration with Hydrasyst Limited, operators can improve operational efficiency, reduce energy consumption and decrease chemical usage. It is anticipated that this will extend the lifetime of the membranes, as well as significantly reduce the cost and environmental impact of water treatment.
Tirupati Graphite has commissioned Stage 1 of the Tirupati graphene and mintech research center (TGMRC) in India. Tirupati says this marks the start of revenue generation at TGMRC and allows the company to advance commercialization engagements.
In Stage 1, the facility can initially produce up to 1 kilogram per day – of graphene oxide ('GO'), reduced graphene oxide ('rGO') and aluminium graphene composite – via the zero-chemical process developed by the company. Ongoing development and expansion of the facility will enable up to 10 kgs per day.
Directa Plus recently stated that a research paper has been published in the journal iScience, supporting the use of its ‘functionalized’ graphene as an antimicrobial material in face masks.
The peer-reviewed paper said the company's G+ nanomaterials and those from graphene oxide provide a “critical opportunity to significantly increase face mask efficacy”.
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 July 2021.
- 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!