著者 Morimoto, Naoki| Suzuki, Hideyuki| Takeuchi, Yasuo| Kawaguchi, Shogo| Kunisu, Masahiro| Bielawski, Christopher W.| Nishina, Yuta|
抄録 Graphite oxide (GO) and its constituent layers (i.e., graphene oxide) display a broad range of functional groups and, as such, have attracted significant attention for use in numerous applications. GO is commonly prepared using the “Hummers method” or a variant thereof in which graphite is treated with KMnO4 and various additives in H2SO4. Despite its omnipresence, the underlying chemistry of such oxidation reactions is not well understood and typically affords results that are irreproducible and, in some cases, unsafe. To overcome these limitations, the oxidation of graphite under Hummers-type conditions was monitored over time using in situ X-ray diffraction and in situ X-ray absorption near edge structure analyses with synchrotron radiation. In conjunction with other atomic absorption spectroscopy, UV–vis spectroscopy and elemental analysis measurements, the underlying mechanism of the oxidation reaction was elucidated, and the reaction conditions were optimized. Ultimately, the methodology for reproducibly preparing GO on large scales using only graphite, H2SO4, and KMnO4 was developed and successfully adapted for use in continuous flow systems.
備考 2018年3月公開予定
発行日 2017-03-02
出版物タイトル Chemistry of Materials
29巻
5号
出版者 American Chemical Society
開始ページ 2150
終了ページ 2156
ISSN 15205002
NCID AA12096771
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 Copyright © 2017 American Chemical Society
論文のバージョン author
Web of Sience KeyUT 000396639400027
関連URL https://doi.org/10.1021/acs.chemmater.6b04807