Table 2.

Comparison of different graphene-based materials synthesized from waste biomass as a carbon source and their applications

(Reprinted with the permission from Ref. [85])

Waste source	Synthetic name		BET surface area (m2 g-1)	Application	References
	Activating agent	Graphitization process (graphitic catalyst precursor)
Peanut shell	KOH	-	2070	Supercapacitor	[85]
Coconut shell	ZnCl2	FeCl3	1874	Supercapacitor	[86]
Soybean shell	KOH	Thermal treatment with NH3 injection for N-doped grapheme	1152	Oxygen reduction reaction	[87]
Wheat Straw	KOH	Thermal treatment in graphite furnace	35.5	Li-ion battery	[88]
Tea tree plant	Plasma enhanced chemical vapor deposition			Hydrophobic coating	[82]
Auricularia + GO	KOH	Hydrothermal carbonization with GO	1723	Supercapacitor	[89]
Waster paper (Co decorated porous graphene)	-	Graphitization & Co(acac)2 + 1,10 phenanthroline	542	Oxygen reduction reaction	[90]