Aqueous colloids of graphene oxide nanosheets by exfoliation of graphite oxide without ultrasonication

作者：Zhang Tian You; Zhang Dong^*

来源：Bulletin of Materials Science, 2011, 34(1): 25-28.

DOI：10.1007/s12034-011-0048-x

• Graphite oxide
• graphene oxide
• magnetic stirring
• atomic force microscopy

Aqueous colloids of graphene oxide nanosheets were produced from exfoliation of graphite oxide using a magnetic stirrer and heat treatment in the absence of ultrasonication. Laser particle measurements showed that the particle size distribution of graphite oxide dispersed in de-ionized water was significantly influenced by treatment time indicating an increasing exfoliation level of graphite oxide. Atomic force microscopy (AFM) confirmed that single-layer graphene oxide nanosheets with a thickness of similar to 1 nm were obtained after 72 h of magnetic stirring and heat treatment. These findings provide a new methodology for preparation of single-layer graphene oxide nanosheet colloids.

• 出版日期2011-2
• 单位同济大学