A Green Approach for Highly Reduction of Graphene Oxide by Supercritical Fluid

Chang Yi Kong; Yuuki Shiratori; Takeshi Sako; Futoshi Iwata

doi:10.4028/www.scientific.net/AMR.1004-1005.1013

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1004-1005A Green Approach for Highly Reduction of Graphene...

A Green Approach for Highly Reduction of Graphene Oxide by Supercritical Fluid

Abstract:

A green method to synthesize the reduced graphene oxide using supercritical fluid has been developed, which is an environmentally friendly and efficient route. The reduced graphene oxide has been examined by X-ray diffraction, Raman spectroscopy. We have also studied the effects of reduction temperatures and supercritical fluids on the electrical properties of reduced graphene oxide. It was found that ethanol has higher reducing capability than CO₂ at all temperatures (200 - 400 ^°C) examined in this study for graphene oxide reduction. As a result, reduced graphene oxide (6300 S/m) from supercritical ethanol treatment has 5 times as high conductivity as that from supercritical CO₂ treatment at the reduction temperature of 400 ^°C. This green process is applicable for large scale production of reduced graphene oxides for various practical applications.

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Periodical:

Advanced Materials Research (Volumes 1004-1005)

Pages:

1013-1016

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.1013

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Online since:

August 2014

Authors:

Chang Yi Kong*, Yuuki Shiratori, Takeshi Sako, Futoshi Iwata

Keywords:

Graphene, Graphene Oxide, Reduced Graphene Oxide, Reduction, Supercritical Fluid

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