Reduced graphene oxide by chemical graphitization

In Kyu Moon, Junghyun Lee, Rodney S. Ruoff () and Hyoyoung Lee ()
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In Kyu Moon: National Creative Research Initiative, Center for Smart Molecular Memory, Sungkyunkwan University
Junghyun Lee: National Creative Research Initiative, Center for Smart Molecular Memory, Sungkyunkwan University
Rodney S. Ruoff: University of Texas at Austin, One University Station C2200
Hyoyoung Lee: National Creative Research Initiative, Center for Smart Molecular Memory, Sungkyunkwan University

Nature Communications, 2010, vol. 1, issue 1, 1-6

Abstract: Abstract Reduced graphene oxides (RG-Os) have attracted considerable interest, given their potential applications in electronic and optoelectronic devices and circuits. However, very little is known regarding the chemically induced reduction method of graphene oxide (G-O) in both solution and gas phases, with the exception of the hydrazine-reducing agent, even though it is essential to use the vapour phase for the patterning of hydrophilic G-Os on prepatterned substrates and in situ reduction to hydrophobic RG-Os. In this paper, we report a novel reducing agent system (hydriodic acid with acetic acid (HI–AcOH)) that allows for an efficient, one-pot reduction of a solution-phased RG-O powder and vapour-phased RG-O (VRG-O) paper and thin film. The reducing agent system provided highly qualified RG-Os by mass production, resulting in highly conducting RG-OHI−AcOH. Moreover, VRG-OHI−AcOH paper and thin films were prepared at low temperatures (40 °C) and were found to be applicable to flexible devices. This one-pot method is expected to advance research on highly conducting graphene platelets.

Date: 2010
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DOI: 10.1038/ncomms1067

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