The prestigious journal Nature Chemistry has published a description of an innovative graphene production technique developed by IMM-CNR – Institute for Microelectronics and Microsystems of the National Research Council.
The new method allows the production, in a convenient, easy and environmentally friendly way, of large amounts of single-layer graphene: the most valuable form of this highly promising material, characterized by excellent mechanical resistance and flexibility.
In particular, the technique developed by the CNR in collaboration with the CNRS, the University of Bordeaux and the University of Montpellier, uses degassed water, instead of surfactants – moderately biocompatible substances – to prevent graphene flakes from aggregating.
The researchers obtained single layers of the material starting from graphite, which was exfoliated under inert atmosphere in tetrahydrofuran, an organic solvent.
“The solution obtained”, explained Vittorio Morandi, a researcher at IMM-CNR, “is then oxidized and transferred to degassed water. The absence of gases in the water prevents the single layers of graphene from aggregating and settling at the bottom, leaving the flakes dispersed in the solution”.
The full story is available below.
Source: Research Italy