Synthesis of Stable Colloidal Suspension of Graphene

Abstract:

In this article, graphite oxide was prepared via Hummers method, then reduced by L-ascorbic acid to obtain colloidal suspension of graphene. The resultant graphene was characterized by FT-IR, UV-vis, Raman, XRD, AFM, TEM in detail, and it was found that the the sp² domain of graphene oxide is restored efficiently, the suspension is very stable and most of the graphene is single-layer. Compared to hydrazine hydrate, L-ascorbic acid has higher deoxygenation efficiency and inclines to gain few-layer graphene and its stable suspensions.

• Periodical: Applied Mechanics and Materials (Volume 328)
• Pages: 794-797
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.328.794
• Online since: June 2013
• Authors: Ya Nan Lv, Cheng An Tao, Hui Ping Liu, Jian Fang Wang, Hui Zhu, You Yu Zhang, Hai Tao Li
• Keywords: Chemical Oxidation-Reduction Method, Colloidal Suspension, Graphene (GR), L-Ascorbic Acid

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