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    Upcoming Graphene Oxide Related Events

    Upcoming Graphene Oxide Related Events

    The increased activity around graphene related research has risen dramatically over the last decade. As a result, there is a full calendar of events each year, offering opportunities to learn more about recent material developments, new application based research and find how the industry is both growing and evolving. William Blythe attend a wide range of events globally, with a recent rise in event attendance connected to their work on graphene oxide.

    A recent event held at Cranfield University proved to be a very interesting two days, with academia and industry meeting to discuss the recent developments in graphene materials and where future resources should focus in order to develop commercial applications for these materials. William Blythe had the opportunity to present at this event, and the company scale up plans for graphene oxide were well received. A number of companies were also particularly interested in William Blythe’s intentions to work collaboratively with customers to develop application specific grades of graphene oxide. If you are interested in a product which falls outside of our standard products, please let us know as we do have experience in developing new grades of graphene oxide by customer request.

    Over the coming months, William Blythe have planned attendance at the UK KTN Special Interest Groups for 2D Materials, attendance at the Graphene New Materials Conference in Cambridge and IDTechEx in Santa Clara. If you would like to arrange a meeting with a member of the William Blythe team at any of these events, please get in touch.

    Graphene Oxide as a Support for Polyoxometalates

    Graphene Oxide as a Support for Polyoxometalates

    Polyoxometalates, or POMs, is the name given to polynuclear materials which contain transition metals and oxygen. They have been researched for a diverse range of applications, including photochemistry and energy storage. The most popular research area to date for POMs has been catalysis, where their redox properties and strong Brønsted acidity are utilised. The biggest problems with POMs include difficulty of separation and the poor availability of active sites. Support materials for POMs have therefore been of great interest within the scientific community as they may offer a simultaneous solution to both problems.

    Many support materials have been researched for this purpose, with silica and polymers common choices. Graphene oxide is also of interest in this research area due to its high surface area and its ease of dispersion in a number of solvents. Accordingly, a recent paper published in Materials Chemistry and Physics focused on supporting polyoxometalates on graphene oxide and reduced graphene oxide for catalyst applications. The researchers discovered that there were three important parameters to control the adsorption; the presence of oxygen functional groups, the pH and the solvent were all key to achieving the highest possible adsorption capacity.

    The research compared the ability of graphene oxide and two reduced graphene oxides, which had different oxygen contents. The highest adsorption capacity achieved by the research was 427 mg/g, which was achieved by graphene oxide. This indicates that a higher oxygen content is preferable when aiming for high adsorption capacities.
    This paper is another example of the breadth of research which graphene oxide is currently being used in. If you have any questions about how your research could benefit from graphene oxide, please get in touch.

    Mater. Chem. Phys., 2017, 299, 424

    Will The Faraday Challenge Result in New Graphene Based Products?

    Will The Faraday Challenge Result in New Graphene Based Products?

    The UK Government recently announced that new funding will be available for research around clean and flexible energy. Termed the ‘Faraday Challenge’, the funding has been described as “an investment of £246 million over 4 years to help UK businesses seize the opportunities presented by the transition to a low carbon economy, to ensure the UK leads the world in the design, development and manufacture of batteries for the electrification of vehicles”. While research included within this brief will be diverse, looking at all aspects of a battery and manufacturing processes, the question of whether graphene and related materials will find a home in this competition has come up many times already.

    Research around graphene and graphene oxide in battery applications is wide ranging, with the materials most frequently considered for use in the electrodes, often as composites. The two-dimensional nature of these materials can be exploited to achieve high surface area materials, often enhancing the performance of existing materials. The possibilities are not limited to the electrodes though, graphene oxide has a broad range of properties which could be exploited in future generations of batteries. One potential example would be the continued use of these materials in composites, used to increase the mechanical strength of polymers. Improvements in this area could be employed in new housing for batteries, to increase the safety of the driver if the battery pack was impacted during a traffic accident.

    The possibilities for graphene oxide in future generations of batteries is diverse, with opportunities presented in many aspects of the global transition into mainstream hybrid and electric vehicles. William Blythe has participated in Innovate UK funding previously and had an active interest in projects related to energy storage – with and without the inclusion of graphene oxide. If you have a project you would like to work on with William Blythe, please get in touch.

    Are you looking for a functionalised graphene oxide?

    Are you looking for a functionalised graphene oxide?

    Did you know that the William Blythe team have the capability to custom manufacture functionalised forms of graphene oxide?

    The R&D team at William Blythe has a wealth of experience in property manipulation of their existing range of inorganic speciality chemicals and advanced materials. As our knowledge around graphene oxide expands, the team at William Blythe have started to look at how their standard graphene oxide can be modified to make it more appropriate for a given environment, or more compatible with the matrix it is being used in and how modifications can improve the performance of the graphene oxide in end applications. William Blythe feel this is an important step to take – the number of applications which graphene oxide could prove beneficial in is unprecedented. While a standard material is likely to give improvement in more than one area, it is also likely that the material will need tuning to each of the applications it is being used in.

    Recent research has started looking at controlling the oxygen content of the graphene oxide, and controlling the ratio of oxygen functional groups on the surface. Some research has also been carried out on adding additional functionality to the surface of graphene oxide by substituting some of the oxygen groups with alternatives. While this research is in its early stages, William Blythe is confident that this will lead to additional application led product specifications in the future.

    Since launching the GOgraphene site, we have received requests for custom synthesis of R&D quantities of functionalised graphene oxide. This has been for various applications and to both new and existing graphene oxide users. If you have a specific form of graphene oxide you would be interested in, please get in touch. We are happy to evaluate all enquiries – we want our graphene oxide to perform the way you need it to in your application and will do our best to ensure this is the case.

    William Blythe banner

    Can graphene oxide help manage asthma?

    Can graphene oxide help manage asthma?

    Defined as an airway inflammation, asthma affects around 300 million people around the world. Current non-invasive methods for monitoring asthma are not only expensive, but are also limited by low sensitivity. One avenue of research around asthma monitoring is the use of biomarkers in exhaled breath condensate (EBC). The droplets of fluid which are exhaled during normal breathing include non-volatile compounds such as nitrate, nitrite and hydrogen peroxide as well as larger molecules such as proteins. There have been several research studies examining the use of EBC nitrite as a biomarker for measuring both inflammation and oxidative distress in the respiratory tract with promising results achieved.

    A recent paper published in Microsystems & Nanoengineering looked at using reduced graphene oxide for electrochemical sensing of nitrite content in exhaled breath condensate. The sensors were made by adding a 3 µL aliquot of graphene oxide dispersion to a gold electrode before drying the surface at room temperature. A glass slide was used to ensure a thin, even GO layer across the surface was achieved. The graphene oxide was then reduced electrochemically. Through multiple experiments, the researchers were able to demonstrate high precision in quantifying nitrite in the samples tested in the clinically relevant µM range. The team validated the performance of their sensors on clinical EBC samples by comparing to results previously achieved by chemiluminescence.

    If you are interested in using graphene oxide in your research, please get in touch. A member of the GOgraphene team will be happy to help answer your questions about which graphene oxide product might perform best and how we can support your research programme moving forward.

    Microsystems & Nanoengineering, 2017, 3, 17022