Ultrasonication Induces Oxygenated Species and Defects onto Exfoliated Graphene

@inproceedings{Skaltsas2013UltrasonicationIO,
  title={Ultrasonication Induces Oxygenated Species and Defects onto Exfoliated Graphene},
  author={Theodosis Skaltsas and Xiaoxing Ke and Carla Bittencourt and Nikos Tagmatarchis},
  year={2013}
}
The effect of ultrasonication parameters, such as time and power applied, to exfoliate graphite in o-dichlorobenzene (o-DCB) and N-methyl-1,2-pyrrolidone (NMP) was examined. It was found that the concentration of graphene was higher in o-DCB, while its dispersibility was increased when sonication was applied for a longer period and/or at higher power. However, spectroscopic examination by X-ray photoelectron spectroscopy (XPS) revealed that ultrasonication causes defects and induces oxygen… CONTINUE READING

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