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Article

Accelerated Synthesis of Graphene Oxide from Graphene

1
Centre for Advanced 2D Materials, National University of Singapore, Singapore 117456, Singapore
2
Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
*
Author to whom correspondence should be addressed.
Contributed equally to this work.
Academic Editor: Gabriele Giancane
Nanomaterials 2021, 11(2), 551; https://doi.org/10.3390/nano11020551
Received: 25 January 2021 / Revised: 18 February 2021 / Accepted: 18 February 2021 / Published: 22 February 2021
(This article belongs to the Special Issue Synthesis, Functionalization and Applications of Nanocarbons)
Graphene oxide (GO) is an oxygenated functionalized form of graphene that has received considerable attention because of its unique physical and chemical properties that are suitable for a large number of industrial applications. Herein, GO is rapidly obtained directly from the oxidation of graphene using an environmentally friendly modified Hummers method. As the starting material consists of graphene flakes, intercalant agents are not needed and the oxidation reaction is enhanced, leading to orders of magnitude reduction in the reaction time compared to the conventional methods of graphite oxidation. With a superior surface area, the graphene flakes are quickly and more homogeneously oxidized since the flakes are exposed at the same extension to the chemical agents, excluding the necessity of sonication to separate the stacked layers of graphite. This strategy shows an alternative approach to quickly producing GO with different degrees of oxidation that can be potentially used in distinct areas ranging from biomedical to energy storage applications. View Full-Text
Keywords: graphene oxide; synthesis; graphene; degree of oxidation graphene oxide; synthesis; graphene; degree of oxidation
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MDPI and ACS Style

Costa, M.C.F.; Marangoni, V.S.; Ng, P.R.; Nguyen, H.T.L.; Carvalho, A.; Castro Neto, A.H. Accelerated Synthesis of Graphene Oxide from Graphene. Nanomaterials 2021, 11, 551. https://doi.org/10.3390/nano11020551

AMA Style

Costa MCF, Marangoni VS, Ng PR, Nguyen HTL, Carvalho A, Castro Neto AH. Accelerated Synthesis of Graphene Oxide from Graphene. Nanomaterials. 2021; 11(2):551. https://doi.org/10.3390/nano11020551

Chicago/Turabian Style

Costa, Mariana C.F., Valeria S. Marangoni, Pei R. Ng, Hang T.L. Nguyen, Alexandra Carvalho, and A. H. Castro Neto. 2021. "Accelerated Synthesis of Graphene Oxide from Graphene" Nanomaterials 11, no. 2: 551. https://doi.org/10.3390/nano11020551

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