The green synthesis of soluble graphene by eucalyptus bark polyphenol extract

Scientists describe a green, effective and economical strategy for synthesized soluble graphene, using a polyphenol solution derived from eucalyptus bark extract.
sustainable synthesis of high-quality graphene sheets is one of the hottest and most inspiring topics in science and engineering. Although graphene oxide (GO) chemical reduction methods are widely used to synthesize graphene sheets, they often include highly hazardous reducing agents that are dangerous to humans

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scientists now describe a green, effective and economical strategy for synthesized soluble graphene, using a python polyphenol solution derived from eucalyptus bark extract. The reduction ability of polyphenol compounds present in eucalyptus bark extract is the reason why the falling GO is reduced to soluble graphene in a water-based medium under reflow conditions.
strong interaction between eucalyptus polyphenol compounds and graphene
XRD, FT-IR, XPS and UV-vis results demonstrate the effective removal of oxygen erythroughs in GO. TEM and AFM images show direct evidence of the development of 1-4 layers of graphene. The stable and uniform dispersion of E-graphene in various aqueous solutions and non-water solvents confirms the strong interaction between eucalyptus polyphenol compounds and graphene.
electrochemical properties are evaluated by cycling the VV and constant current charge and discharge (GCD). GCD results show that the E-graphene super capacitor has a 239 F G high ratio capacitor-1 and 71 high energy density W kg-1 at the current density of 2 g -1. These characteristics show that this green method not only has a good prospect in the manufacture of high-performance super capacitors, but also has a good prospect in the synthesis of graphene-based materials.