High-efficient Synthesis of Graphene Oxide Based on Improved Hummers Method
TL;DR: An improved NaNO3-free Hummers method is reported by partly replacing KMnO4 with K2FeO4 and controlling the amount of concentrated sulfuric acid, which greatly reduces the reactant consumption while keeps a high yield.
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Abstract: As an important precursor and derivate of graphene, graphene oxide (GO) has received wide attention in recent years. However, the synthesis of GO in an economical and efficient way remains a great challenge. Here we reported an improved NaNO3-free Hummers method by partly replacing KMnO4 with K2FeO4 and controlling the amount of concentrated sulfuric acid. As compared to the existing NaNO3-free Hummers methods, this improved routine greatly reduces the reactant consumption while keeps a high yield. The obtained GO was characterized by various techniques, and its derived graphene aerogel was demonstrated as high-performance supercapacitor electrodes. This improved synthesis shows good prospects for scalable production and applications of GO and its derivatives.
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Citations
Functional Graphenic Materials, Graphene Oxide, and Graphene as Scaffolds for Bone Regeneration
Zoe M. Wright,Anne M. Arnold,Brian D. Holt,Karoline E. Eckhart,Stefanie A. Sydlik +4 more
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TL;DR: Graphene, graphene oxide (GO), and functional graphenic materials (FGMs) have a variety of interesting properties that make them promising foundations on which to craft sophisticated, biomimetic, osteo-inductive, synthetic scaffolds for bone regeneration.
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