Nano Research

, Volume 3, Issue 1, pp 16–22

Efficient synthesis of graphene nanoribbons sonochemically cut from graphene sheets

Open Access
Research Article
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Abstract

We report a facile approach to synthesize narrow and long graphene nanoribbons (GNRs) by sonochemically cutting chemically derived graphene sheets (GSs). The yield of GNRs can reach ∼5 wt% of the starting GSs. The resulting GNRs are several micrometers in length, with ∼75% being single-layer, and ∼40% being narrower than 20 nm in width. A chemical tailoring mechanism involving oxygen-unzipping of GSs under sonochemical conditions is proposed on the basis of experimental observations and previously reported theoretical calculations; it is suggested that the formation and distribution of line faults on graphite oxide and GSs play crucial roles in the formation of GNRs. These results open up the possibilities of the large-scale synthesis and various technological applications of GNRs.

Keywords

Graphene nanoribbon graphene oxide synthesis sonochemical cutting 

Supplementary material

12274_2010_1003_MOESM1_ESM.pdf (410 kb)
Supplementary material, approximately 409 KB.

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Copyright information

© Tsinghua University Press and Springer Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Shenyang National Laboratory for Materials Science, Institute of Metal ResearchChinese Academy of SciencesShenyangChina

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