Graphene oxide is one of the most popular 2D materials available. This is due to the wide range of fields that it can be applied to. It has a distinct advantage over other 2d materials (such as graphene), as it is easily dispersed within solution; allowing for processing at high concentrations. This has opened it up for use in applications such as optical coatings, transparent conductors, thin-film batteries, chemical resistant coatings, water purification, and many more. Ossila have two types of graphene oxide powders available, with flake sizes between 1-5um and 1-50um. In addition, we also offer pre-dispersed graphene oxide solutions for simple instant use. |
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Product List
MSDS 
Graphene Oxide Powders
| Product code | M880 | M881 | M882 |
| Flake Size | 100 - 200nm | 1-5 μm | 1-50 μm |
| Flake Thickness | 0.8 - 1.2 nm | 0.8-1.2 nm | 0.8-1.2 nm |
| Single layer ratio | >99% | >99% | >99% |
| Purity | >99% | >99% | >99% |
| Amount | 100mg, 500mg | 500mg, 1g | 500mg, 1g |
| Packaging Information | Light resistant bottle | Light resistant bottle | Light resistant bottle |
MSDS 
Graphene Oxide Solutions
| Product code | M883 | M884 | M885 | M886 |
| Flake Sizes | 1-5 μm | 1-5 μm | 1-50 μm | 1-50 μm |
| Concentration | 5 mg.ml-1 | 0.5 mg.ml-1 | 5 mg.ml-1 | 0.5 mg.ml-1 |
| Solvents | Water:IPA | Water:IPA | Water:IPA | Water:IPA |
| Solution Volume | 100 ml | 100 ml | 100 ml | 100 ml |
| Packaging Information | 4 x 25 ml bottles | 4 x 25 ml bottles | 4 x 25 ml bottles | 4 x 25 ml bottles |
What Graphene Oxide is
Graphene oxide (GO), also referred to as graphite/graphitic oxide, is obtained by treating graphite with oxidisers, and results in a compound of carbon, oxygen, and hydrogen in variable ratios.
The structure and properties of GO are much dependent on the particular synthesis method and degree of oxidation. With buckled layers and an interlayer spacing almost two times larger (~0.7 nm) than that of graphite,it typically still preserves the layer structure of the parent graphite.
GO absorbs moisture proportionally to humidity and swells in liquid water. GO membranes are vacuum-tight and impermeable to nitrogen and oxygen, but permeable to water vapours. The ability to absorb water by GO depends on the particular synthesis method and also shows a strong temperature dependence.
GO is considered as an electrical insulator for the disruption of its sp2 bonding networks. However, by manipulating the content of oxygen-containing groups through either chemical or physical reduction methods, the electrical and optical properties of GO can be dynamically tuned. To increase the conductivity, oxygen groups are removed by reduction reactions to reinstall the delocalised hexagonal lattice structure. One of the advantages GO has over graphene is that it can be easily dispersed in water and other polar organic solvents. In this way, GO can be dispersed in a solvent and reduced in situ, resulting in potentially monodispersed graphene particles.
Due to its unique structure, GO can be functionalised in many ways for desired applications, such as optoelectronics, drug delivery, chemical sensors, membrane filtration, flexible electronics, solar cells and more.
GO was first synthesised by Brodie (1859), followed by Hummers' Method (1957), and later on by Staudenmaier and Hofmann methods. Graphite (graphene) oxide has also been prepared by using a "bottom-up" synthesis method (Tang-Lau method) where glucose is the sole starting material. The Tang-Lau method is considered to be easier, cheaper, safer and more environmentally-friendly. The thickness, ranging from monolayer to multilayers, can by adjusted using the Tang-Lau process. The effectiveness of an oxidation process is often evaluated by the carbon/oxygen ratios of the GO.
Dispersion Guides
Due to the presence of oxygen and hydroxide groups, the dispersibility of this material is significantly better than other 2d materials (such as graphene). High concentrations of GO can be dispersed in polar solvents, such as water. At Ossila, we have found that the most stable solutions can be produced using the following recipe:
- Weigh out desired amount of material, this can go up to at least 5 mg.ml-1.
- Add 1:1 ratio of deionized water to isopropyl alcohol.
- Shake vigorously to break up material.
- A short treatment in an ultrasonic bath will rapidly disperse the material.
- For larger flakes, use a mechanical agitator instead (as sonication may damage the flakes).
Technical Data
General Information
| CAS number | 7782-42-5 (graphite) |
| Chemical formula | CxHyOz |
| Recommended Solvents | H2O, DMF, IPA |
| Synonyms |
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| Classification / Family | 2D semiconducting materials, Carbon nanomaterials, Graphene, Organic electronics |
| Colour | Black/Brown Sheets/Powder |
Product Images
Publications
- An improved Hummers method for eco-friendly synthesis of graphene oxide, J. Chen et al., Carbon 64, 225-229 (2013); http://dx.doi.org/10.1016/j.carbon.2013.07.055.
- Synthesis of few-layered, high-purity graphene oxide sheets from different graphite sources for biology, D. A. Jasim et al., 2D Mater. 3, 014006 (2016); doi:10.1088/2053-1583/3/1/014006.
- Preparation and Characterization of Graphene Oxide, J. Song et al., J. Nanomater., 276143 (2014); http://dx.doi.org/10.1155/2014/276143.
- The chemistry of graphene oxide, D. R. Dreyer et al., Chem. Soc. Rev., 39, 228–240 (2010); DOI: 10.1039/b917103g.
- Preparation of small-sized graphene oxide sheets and their biological applications, M. Zhang et al., J. Mater. Chem. B, 4, 121 (2016); DOI: 10.1039/c5tb01800e.
- Graphene Oxide: Preparation, Functionalization, and Electrochemical Applications, D. Chen et al., Chem. Rev., 112, 6027−6053 (2012); dx.doi.org/10.1021/cr300115g.
- Preparation of Graphitic Oxide, W. Hummer et al., J. Am. Chem. Soc., 80 (6), 1339–1339 (1958); DOI: 10.1021/ja01539a017.
- Improved Synthesis of Graphene Oxide, D. C. Marcano et al., ACS Nano, 4 (8), 4806–4814 (2010); DOI: 10.1021/nn1006368.
- Fast and fully-scalable synthesis of reduced graphene oxide, S. Abdolhosseinzadeh et al., Sci. Rep., 5:10160 (2015); DOI: 10.1038/srep10160.
To the best of our knowledge, the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.
About Ossila Founded in 2009 by organic electronics research scientists, Ossila aims to provide the components, equipment, and materials to enable intelligent and efficient scientific research and discovery. Over a decade on, we're proud to supply our products to over 1000 different institutions in over 80 countries globally. With decades of academic and industrial experience in developing organic and thin-film LEDs, photovoltaics, and FETs, we know how long it takes to establish a reliable and efficient device fabrication and testing process. As such, we have developed coherent packages of products and services - enabling researchers to jump-start their organic electronics development program. The Ossila Guarantee Free Worldwide Shipping Eligible orders ship free to anywhere in the world Fast Secure Dispatch Rapid dispatch on in-stock items via secure tracked courier services Quality Assured Backed up by our free two year warranty on all equipment Clear Upfront Pricing Clear pricing in over 30 currencies with no hidden costs Large Order Discounts Save 8% on orders over $10,300.00 and 10% on orders over $12,900.00 Expert Support Our in-house scientists and engineers are always ready to help Trusted Worldwide Great products and service. Have already recommended to many people. Dr. Gregory Welch, University of Calgary Wonderful company with reasonably priced products and so customer-friendly! Shahriar Anwar, Arizona State University The Ossila Team Prof. David Lidzey - Chairman As professor of physics at the University of Sheffield, Prof. David Lidzey heads the university’s Electronic and Photonic Molecular Materials research group (EPMM). During his career, David has worked in both academic and technical environments, with his main areas of research including hybrid organic-inorganic semiconductor materials and devices, organic photonic devices and structures and solution processed photovoltaic devices. Throughout his academic career, he has authored over 220 peer-reviewed papers. Dr. James Kingsley - Managing Director James is a co-founder and managing director of Ossila. With a PhD in quantum mechanics/nanotech and over 12 years’ experience in organic electronics, his work on the fabrication throughput of organic photovoltaics led to the formation of Ossila and the establishment of a strong guiding ethos: to speed up the pace of scientific discovery. James is particularly interested in developing innovative equipment and improving the accessibility of new materials for solution-processable photovoltaics and hybrid organic-inorganic devices. Dr. Alastair Buckley - Technical Director Alastair is a lecturer of Physics at the University of Sheffield, specialising in organic electronics and photonics. He is also a member of the EPMM research group with a focus on understanding and applying the intrinsic advantages of functional organic materials to a range of optoelectronic devices. Alastair’s experience has not been gained solely in academia; he previously led the R&D team at MicroEmissive Displays and therefore has extensive technical experience in OLED displays. He is also the editor and contributor of "Organic Light-Emitting Diodes" by Elsevier. Our Research Scientists Our research scientists and product developers have significant experience in the synthesis and processing of materials and the fabrication and testing of devices. The vision behind Ossila is to share this experience with academic and industrial researchers alike, and to make their research more efficient. By providing products and services that take the hard work out of the device fabrication process, and the equipment to enable accurate, rapid testing, we can free scientists to focus on what they do best - science. Customer Care Team The customer care team is responsible for the customer journey at Ossila. From creating and providing quotes, through to procurement and inventory management, the customer care team is devoted to providing first class customer service. The general day to day responsibilities of a customer care team member involves processing customers orders and price queries, answering customer enquiries, arranging the shipment of parcels and notifying customers of updates on their orders. Collaborations and Partnerships Please contact the customer care team for all enquires, including technical questions about Ossila products or for advice on fabrication and measurement processes. Location and Facilities Ossila is based at the Solpro Business Park in Attercliffe, Sheffield. We operate a purpose-built synthetic chemistry and device testing laboratory on site, where all of our high-purity, batch-specific polymers and other formulations are made. This is complemented by a dedicated suite of thin-film and organic electronics testing and analysis tools within the device fabrication cluster housed in a class 1000 cleanroom in the EPSRC National Epitaxy Facility in Sheffield. All our electronic equipment is manufactured on-site.
