[18a-E308-1~9] 17.2 Graphene

[18a-E308-9] Carbon addition effect on re-graphitization of graphene oxide

〇Yasunori Fujikawa¹, Keisuke Honma¹, Haine Hibata¹, Seiji Obata^2,3, Koichiro Saiki³ (1.Hirosaki Univ., 2.Okayama Univ., 3.Univ. of Tokyo)

Keywords:graphene, photoemission electron microscorpy, scanning tunneling microscopy

Re-graphitization of graphene oxide (GO) on Pt(111) surfaces by annealing has been studied by means of photoemission electron microscopy and scanning tunneling microscopy. While incomplete re-graphitization and decomposition of GO take place on a clean surface during annealing up to 940 degree C, annealing with pre-deposited C₆₀ molecules results in completed re-graphitization to form a single layer graphene at the interface between GO and Pt(111), which is left undecomposed even after decomposition of multilayer GO and surrounding epitaxial graphene by annealing up to 970 degree C.