Graphene Oxide News
Abalonyx announced that it entered into a partnership with Kongsberg Innovasjon for both engineering support and an investment that will enable Abalonyx to start mass producing graphene oxide materials. Kongsberg Innovasjon will purchase a 21.5% stake in Abalonyx.
Since 2012, Abalonyx had a pilot production line, used to produce GO samples and verify the scalability and safety of its process. The two companies are now developing a new facility (in south east Norway) that will start production in Q3 2014 with a capacity of 8 tons/year.
Researchers say Graphene Oxide is probably not toxic as humans have been eating GO flakes for thousands of years
Researchers from India verified that when you barbecue meat, it produces all sorts of carbon nanoparticles, including graphene oxide. This led them to the conclusion that GO is probably safe to eat - as humans have been eating barbecued meat for thousands of years.
When meat is heated, the proteins undergo pyrolysis, which produces graphene oxide sheets and carbon nanoparticles via the condensation of five- and six-membered rings. Some of these particles are doped with nitrogen from the atmosphere, and GO is formed when plant matter is charred. GO is also present in several medicines such as gripe water and active coal powders.
Researchers from Australia's Anstro institute and Deakin University developed an efficient method to prepare porous and reduced graphene oxide. They say that this one-step, catalyst-free, high penetration and through-put technique offers for the first time a significant advantage over previously reported graphene oxide (GO) solution reduction mechanisms.
The new technique, which uses gamma irradiation, maintains the naturally densely packed morphology of GO bucky-papers without causing the dramatic exfoliation of the graphene layers caused by chemically reduced routes.
Researchers from Penn State University and Japan's Shinshu University developed a simple and scalable process to make strong, stretchable graphene oxide fibers. Those fibers can easily be scrolled into yarns that have strengths approaching that of Kevlar.
The new GO fiber is the strongest carbon fiber ever. The researchers believe that pockets of air inside the fiber keep it from being brittle. But those fibers can also be altered to make other useful materials. For example, removing the oxygen results in a fiber with high electrical conductivity, while adding silver nanorods increases the conductivity (to the same level as copper, while being much lighter than copper).
Researchers at Melbourne's Swinburne University developed a high-quality continuous graphene oxide thin film that has a record-breaking optical nonlinearity. The film may be suitable for high performance integrated photonic devices - useful for communication, biomedcine and photonic computing.
To create this new film, the researchers first spin-coated a graphene-oxide solution on a glass substrate. They then used a laser to create microstructures on the graphene oxide film to tune the nonlinearity of the material. Now they have a platform to fabricate optical components with desired nonlinearity - and all on the same graphene sheet without the need to integrate different components.
Researchers from UC Riverside discovered that graphene oxide nanoparticles are very mobile in lakes or streams - which means that they can cause negative environmental and health impacts. It turns out that in surface waters (where there is more organic material and less hardness), GO particles remain stable. But in groundwater, they tend to become less stable.
The researchers say that it is important to continue and study what happens when graphene materials get into the ground or water. They say that their lab is one of the few labs in the US that studies the environmental impact of graphene oxide.
Veritcally-aligned graphene oxide flakes enable supercapacitors that can charge 1,000 faster than regular graphene ones
Researchers from Korea's Sungkyunkwan developed new supercapacitors that can charge 1000 times faster than current graphene supercapacitors, while also having three times the energy capacity. To achieve this fast charge (and discharge) times,t he researchers used vertically aligning graphene oxide flakes.
The researchers created a graphene oxide film using a carbon nanotube, and then used cutting and heat treatment to develop the vertically-structured graphene electrodes. The researchers also inserted a VNT into the GO sheets and created regular patterned pores in the GO films. All this resulting in electrodes that is much faster than solid and vertically-structured graphene used in existing supercapacitors.