Aqueous Only Route toward Graphene from Graphite Oxide

Aqueous Only Route toward Graphene from Graphite Oxide

We report a new, simple, hydrazine-free, high-yield method for producing single-layer graphene sheets. Graphene sheets were formed from graphite oxide by reduction with simple deionized water at 95 °C under atmospheric pressure. Over 65% of the sheets are single graphene layers; the average sheet di...

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Veröffentlicht in:ACS nano 2011-02, Vol.5 (2), p.1253-1258
Hauptverfasser: Liao, Ken-Hsuan, Mittal, Anudha, Bose, Shameek, Leighton, Christopher, Mkhoyan, K. Andre, Macosko, Christopher W
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container_end_page 1258
container_issue 2
container_start_page 1253
container_title ACS nano
container_volume 5
creator Liao, Ken-Hsuan
Mittal, Anudha
Bose, Shameek
Leighton, Christopher
Mkhoyan, K. Andre
Macosko, Christopher W
description We report a new, simple, hydrazine-free, high-yield method for producing single-layer graphene sheets. Graphene sheets were formed from graphite oxide by reduction with simple deionized water at 95 °C under atmospheric pressure. Over 65% of the sheets are single graphene layers; the average sheet diameter is 300 nm. We speculate that dehydration of graphene oxide is the main mechanism for oxygen reduction and transformation of C−C bonds from sp3 to sp2. The reduction appears to occur in large uniform interconnected oxygen-free patches so that despite the presence of residual oxygen the sp2 carbon bonds formed on the sheets are sufficient to provide electronic properties comparable to reduced graphene sheets obtained using other methods.
doi_str_mv 10.1021/nn1028967
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title Aqueous Only Route toward Graphene from Graphite Oxide
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