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ID 55211
フルテキストURL
著者
Morimoto, Naoki Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Division of Pharmaceutical Sciences, Okayama University
Suzuki, Hideyuki Research Core for Interdisciplinary Sciences, Okayama University
Takeuchi, Yasuo Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Division of Pharmaceutical Sciences, Okayama Universit
Kawaguchi, Shogo Japan Synchrotron Radiation Research Institute (JASRI), SPring-8
Kunisu, Masahiro Toray Research Center, Inc., Surface Science Laboratories
Bielawski, Christopher W. Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS)
Nishina, Yuta Research Core for Interdisciplinary Sciences, Okayama University
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.
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
DOI
Web of Sience KeyUT
関連URL
isVersionOf https://doi.org/10.1021/acs.chemmater.6b04807