[16p-2T-1~7] 17.2 Structure control and process

[16p-2T-4] Reduction of Graphene Oxide by Thermal-assisted VUV Photochemical Reaction

〇(D)Yudi Tu¹, Toru Utsunomiya¹, Takashi Ichii¹, Hiroyuki Sugimura¹ (1.Kyoto Univ.)

Keywords:graphene,ultraviolet,AFM

We applied the practical incoherent VUV light (Xe₂ lamp, 172 nm) for the reduction of graphene oxide (GO). By irradiating the GO in high vacuum environment, the oxygen in the GO could be partially removed and the ratio of oxygen and carbon (R_O/C)reached at ca. 0.25. For the sake of higher reduction level, we here report a thermal-assisted VUV reduction method by heating the GO when irradiating VUV light. When the temperature was 120^oC, the R_O/C further reduced to ca. 0.17, indicating a higher reduction level.