ID | 55211 |
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Author |
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
Kaken ID
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
ORCID
Kaken ID
publons
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Abstract | 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.
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Published Date | 2017-03-02
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Publication Title |
Chemistry of Materials
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Volume | volume29
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Issue | issue5
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Publisher | American Chemical Society
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Start Page | 2150
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End Page | 2156
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ISSN | 15205002
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NCID | AA12096771
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | Copyright © 2017 American Chemical Society
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File Version | author
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DOI | |
Web of Science KeyUT | |
Related Url | isVersionOf https://doi.org/10.1021/acs.chemmater.6b04807
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