Production of graphene nanospheres by annealing of graphene oxide in solution

被引:0
作者
Jian Zheng
Hongtao Liu
Bin Wu
Yunlong Guo
Ti Wu
Gui Yu
Yunqi Liu
Daoben Zhu
机构
[1] Chinese Academy of Sciences,Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry
[2] Graduate University of Chinese Academy of Sciences,undefined
来源
Nano Research | 2011年 / 4卷
关键词
Graphene; nanosphere; self-assembly; microwave; anneal;
D O I
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中图分类号
学科分类号
摘要
We report a simple method to produce graphene nanospheres (GNSs) by annealing graphene oxide (GO) solution at high-temperature with the assistance of sparks induced by the microwave absorption of graphite flakes dispersed in the solution. The GNSs were formed by rolling up of the annealed GO, and the diameters were mostly in the range 300–700 nm. The GNS exhibited a hollow sphere structure surrounded by graphene walls with a basal spacing of 0.34 nm. Raman spectroscopy and X-ray photoelectron spectroscopy of the GNSs confirmed that the GO was efficiently reduced during the fabrication process. The resulting GNSs may open up new opportunities both for fundamental research and applications, and this method may be extended to the synthesis of other nanomaterials and the fabrication of related nanostructures. [inline-graphic not available: see fulltext]
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页码:705 / 711
页数:6
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