open access

https://hdl.handle.net/2115/53021

Mass production of graphene oxide from expanded graphite

英語

mass production

2013-10-15

Elsevier, B.V.

Material letters

109

207-210

In a deviation from the conventional Hummers method, a spontaneous expansion approach was introduced with expanded graphite as the precursors. The intercalating agent (H2SO4) was able to penetrate into the expanded graphite; this had further expanded the graphite and as a result, a foam-like intermediate was produced. The foam-like graphite was more easily oxidized in reaction with the oxidant (KMnO4) to form graphene oxide (GO). Fully exfoliated GO was obtained with expanded graphite having the median diameter ∼15 μm as the precursors. This procedure was much safer and productive in scalable applications than the conventional Hummers methods.

学術雑誌論文

Accepted Manuscript

0167-577X

AA1063425X