| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1594608 | Solid State Communications | 2009 | 5 Pages |
Abstract
Treatment of crystalline graphite fine powder with an aqueous solution of the harmless and versatile substance polyvinylpyrrolidone under sonication results in water-soluble, polymer-protected graphene single layers without oxidation or destruction of the sp2 character of the carbon core. The liquid-phase extraction of graphene monolayers was evidenced by TEM and AFM techniques, while their graphitic character was checked with Raman spectroscopy. Besides PVP, the water-soluble biopolymers albumin and sodic carboxymethylcellulose were also employed successfully in the aqueous-phase exfoliation of graphite, thereby supporting the generic character of the present method using a variety of suitable polymeric extractants.
Keywords
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Athanasios B. Bourlinos, Vasilios Georgakilas, Radek Zboril, Theodore A. Steriotis, Athanasios K. Stubos, Christos Trapalis,