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Title: Accelerated synthesis of graphene oxide from graphene
Authors: Costa, Mariana C. F. 
Marangoni, Valeria S. 
Ng, Pei Rou 
Nguyen, Hang T. L. 
Carvalho, Alexandra 
Castro Neto,Antonio Helio 
Keywords: Degree of oxidation
Graphene oxide
Issue Date: 22-Feb-2021
Publisher: MDPI AG
Citation: Costa, Mariana C. F., Marangoni, Valeria S., Ng, Pei Rou, Nguyen, Hang T. L., Carvalho, Alexandra, Castro Neto,Antonio Helio (2021-02-22). Accelerated synthesis of graphene oxide from graphene. Nanomaterials 11 (2) : 1-8. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: 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. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Source Title: Nanomaterials
ISSN: 2079-4991
DOI: 10.3390/nano11020551
Rights: Attribution 4.0 International
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