Preparation of Bulk ¹³C‐Enriched Graphene Materials

Arc‐discharge has been widely used in the bulk production of various carbon nanomaterials, especially for structurally more robust single‐walled carbon nanotubes. In this paper, the same bulk‐production technique was applied to the synthesis of significantly 13 C‐enriched graphitic materials, from which graphene oxides similarly enriched with 13 C were prepared and characterized. The results demonstrate that arc‐discharge is a convenient method to produce bulk quantities of 13 C‐enriched graphene materials from relatively less expensive precursors (largely amorphous 13 C powders).