FullText URL Chem_Mater_29_5_2150.pdf
Author Morimoto, Naoki| Suzuki, Hideyuki| Takeuchi, Yasuo| Kawaguchi, Shogo| Kunisu, Masahiro| Bielawski, Christopher W.| Nishina, Yuta|
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.
Published Date 2017-03-02
Publication Title Chemistry of Materials
Volume volume29
Issue issue5
Publisher American Chemical Society
Start Page 2150
End Page 2156
ISSN 15205002
NCID AA12096771
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders Copyright © 2017 American Chemical Society
File Version author
DOI 10.1021/acs.chemmater.6b04807
Web of Sience KeyUT 000396639400027
Related Url isVersionOf https://doi.org/10.1021/acs.chemmater.6b04807