Green synthesis of graphene oxide by seconds timescale water electrolytic oxidation

Songfeng Pei, Qinwei Wei, Kun Huang, Hui-Ming Cheng and Wencai Ren ()
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Songfeng Pei: Chinese Academy of Sciences
Qinwei Wei: Chinese Academy of Sciences
Kun Huang: Chinese Academy of Sciences
Hui-Ming Cheng: Chinese Academy of Sciences
Wencai Ren: Chinese Academy of Sciences

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Graphene oxide is highly desired for printing electronics, catalysis, energy storage, separation membranes, biomedicine, and composites. However, the present synthesis methods depend on the reactions of graphite with mixed strong oxidants, which suffer from explosion risk, serious environmental pollution, and long-reaction time up to hundreds of hours. Here, we report a scalable, safe and green method to synthesize graphene oxide with a high yield based on water electrolytic oxidation of graphite. The graphite lattice is fully oxidized within a few seconds in our electrochemical oxidation reaction, and the graphene oxide obtained is similar to those achieved by the present methods. We also discuss the synthesis mechanism and demonstrate continuous and controlled synthesis of graphene oxide and its use for transparent conductive films, strong papers, and ultra-light elastic aerogels.

Date: 2018
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DOI: 10.1038/s41467-017-02479-z

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