A low-temperature method to produce highly reduced graphene oxide

Chemical reduction of graphene oxide can be used to produce large quantities of reduced graphene oxide for potential application in electronics, optoelectronics, composite materials and energy-storage devices. Here we report a highly efficient one-pot reduction of graphene oxide using a sodium-ammon...

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Bibliographic Details
Published in:Nature communications Vol. 4; no. 1; p. 1539
Main Authors: Feng, Hongbin, Cheng, Rui, Zhao, Xin, Duan, Xiangfeng, Li, Jinghong
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 26.02.2013
Nature Publishing Group
Subjects:
639/301/930/1032
639/925/918
Ammonia
Chemical reduction
Composite materials
Humanities and Social Sciences
Low temperature
multidisciplinary
Oxygenation
Science
Science (multidisciplinary)
Sodium
Thin films
ISSN:2041-1723, 2041-1723
Online Access:Get full text
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Summary:Chemical reduction of graphene oxide can be used to produce large quantities of reduced graphene oxide for potential application in electronics, optoelectronics, composite materials and energy-storage devices. Here we report a highly efficient one-pot reduction of graphene oxide using a sodium-ammonia solution as the reducing agent. The solvated electrons in sodium-ammonia solution can effectively facilitate the de-oxygenation of graphene oxide and the restoration of π-conjugation to produce reduced graphene oxide samples with an oxygen content of 5.6 wt%. Electrical characterization of single reduced graphene oxide flakes demonstrates a high hole mobility of 123 cm 2  Vs −1 . In addition, we show that the pre-formed graphene oxide thin film can be directly reduced to form reduced graphene oxide film with a combined low sheet resistance (~350 Ω per square with ~80% transmittance). Our study demonstrates a new, low-temperature solution processing approach to high-quality graphene materials with lowest sheet resistance and highest carrier mobility. The chemical reduction of graphene oxide can provide large quantities of reduced graphene oxide for potential application in electronics and composite materials. Feng et al . report a highly efficient low-temperature one-pot reduction of graphene oxide that uses sodium-ammonia solution as the reducing agent.
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ISSN:2041-1723
2041-1723
DOI:10.1038/ncomms2555