Our products are prepared by exfoliation of graphite in a planetary mill using two types of exfoliating agents and in the absence of solvents and mineral acids. Our work-up procedure guarantees the removal of any remaining exfoliating agent.
Few Layer Graphene 500-1000nm
Few Layer Graphene 150-500nm
All batches of our products are characterised by Raman spectroscopy, HRTEM (High Resolution Transmission Electron Microscopy), TGA (Thermogravimetric Analysis), TXRF (Total X-ray fluorescence), Elemental Analysis, and Sheet Resistance. Each sample supplied will be accompanied by the characterisation data and spectra.
All products are supplied in powder form and can be easily dispersed in water (and other media) as shown in the published video (here).
The dispersions in aqueous media are stable during the first 24 hours. After that time some of the graphene may precipitate but, if this occurs, it can be redispersed by brief ultrasonication (cycles of 10 seconds, no more than 2 minutes). This methodology ensures a good dispersion of the graphene.
Our products have been widely used for a variety of applications such as:
Our products can also be dispersed directly in culture medium (recommended concentration of around 0.1 mg/mL) and such samples would be stable during several hours. Stabilising agents are not required.
Recommendations for storage:
Our products are stable at room temperature and refrigeration is not required during storage.