Chemistry Letters, Vol.41, No.2, 187-188, 2012
Change in the Morphology of the Terrace Edges on Graphite Surfaces by Electrochemical Reduction
We found that graphite surfaces can be etched by electrochemical reduction in sulfuric acid. Terraces with straight edges crossing with 60 degrees-multiple angles were found on surfaces by AFM observation. It suggests that crystallographic edges can be formed at room temperature in a controlled manner. Layer-by-layer etching of graphene sheets was possible by tuning the etching condition.