Production of graphene from graphite oxide using urea as expansion-reduction agent

被引：177

作者：

Wakeland, Stephen ^{[1
]}

Martinez, Ricardo ^{[1
]}

Grey, John K. ^{[2
]}

Luhrs, Claudia C. ^{[1
]}

机构：

[1] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA

[2] Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA

来源：

CARBON | 2010年 / 48卷 / 12期

基金：

美国国家科学基金会;

关键词：

THERMAL-DECOMPOSITION PYROLYSIS; FUNCTIONALIZED GRAPHENE; ELECTRICAL-PROPERTIES; FACILE SYNTHESIS; SHEETS; NANOPLATELETS; COMPOSITES; NANOSHEETS; OXIDATION; VAPOR;

D O I：

10.1016/j.carbon.2010.05.043

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Graphene sheets were produced from graphite oxide using a simple two-step process. First, graphite oxide (GO) is well mixed with an expansion reduction agent, such as urea, that decomposes upon heating to release reducing gases. Second, the mix is heated in an inert gas environment (e.g. N-2) for a very short time to a moderate temperature (ca. 600 degrees C). Reaction temperature selection should be consistent with the decomposition temperature of the expansion reduction agent. Upon cooling, graphene can readily be collected as the solid byproduct. Graphene samples were characterized by XRD, TEM, EELS, SEM, Raman Spectroscopy and the GO and urea mixtures decomposition-reduction process studied by TGA/DSC analysis. This graphene generation process is rapid, inexpensive and easy to scale up. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3463 / 3470

页数：8

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