Highly Efficient Synthesis of Graphene Nanocomposites

详细信息    查看全文

• 作者：Haixiong Tang ; Gregory J. Ehlert ; Yirong Lin ; Henry A. Sodano
• 刊名：Nano Letters
• 出版年：2012
• 出版时间：January 11, 2012
• 年：2012
• 卷：12
• 期：1
• 页码：84-90
• 全文大小：450K
• 年卷期：v.12,no.1(January 11, 2012)
• ISSN：1530-6992

文摘

Graphene consists of a monolayer of sp² bonded carbon atoms and has attracted considerable interest over recent years due to its extreme mechanical, electrical, and thermal properties. Graphene nanocomposites have naturally begun to be studied to capitalize upon these properties. A range of complex chemical and physical processing methods have been devised that achieve isolated graphene sheets that attempt to prevent aggregation. Here we demonstrate that the simple casting of a polymer solution containing dispersed graphene oxide, followed by thermal reduction, can produce well-isolated monolayer reduced-graphene oxide. The presence of single layer reduced-graphene oxide is quantitatively demonstrated through transmission electron microscopy and selected area electron diffraction studies and the reduction is verified by thermogravimetric, X-ray photoelectron spectroscopy, infrared spectrum, and electrical conductivity studies. These findings provide a simple, environmentally benign and commercially viable process to produce reduced-graphene oxide reinforced polymers without complex manufacturing, dispersion or reduction processes.

Keywords:

Graphene oxide; nanocomposite; dielectrics; electrical conductivity; TEM; thermal reduction