22 March 2012 Graphene produced from microorganisms in river Graphene produced from microorganisms in river Researchers have developed an innovative method for producing high quality graphene by reducing oxide flakes using easily extractable microorganisms from a river. The technique paves the way for large scale production of graphene. Currently, the chemical reduction of graphene oxide (GO) flakes is the preferred choice for mass production. Notably, the critical stage of reducing GO flakes into the 2D layers of carbon involves exposure of the GO to hydrazine. However, this reduction process limits the potential for large scale production, mainly because the vapour is highly toxic. The new method has been developed by the Toyohashi Tech Graphene Research Group and was inspired by a recent report that graphene oxide behaves as a terminal electron acceptor for bacteria. This revealed that the GO is reduced by microbial action in the process of breathing or electron transport. The team from Toyohashi adopted a hybrid approach, where chemically derived graphene oxide flakes were reduced by readily available microorganisms extracted from a nearby river bank. According to the researchers, Raman scattering measurements showed that the GO flakes had indeed been reduced. Author Chris Shaw Comment on this article Websites http://www.tut.ac.jp/english/ Companies MA Business Ltd This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team. What you think about this article: Add your comments Name Email Comments Your comments/feedback may be edited prior to publishing. Not all entries will be published. Please view our Terms and Conditions before leaving a comment.