Green Synthesis of N-Doped Graphene Nanosheets by Cow Urine (E-pub Ahead of Print)
Kamal K Kar,
Malay K Das.
Background: Nitrogen (N)-doping in the graphene lattice is a process to tailor the physicochemical
properties of graphene nanosheets, and explored for potential use in the various modern applications.
Objective: Synthesis of N-doped graphene nanosheets via green route in contrast to the post traditional
Method: N-doped graphene nanosheets have been synthesized by simple solvothermal method at 180 oC
using cow urine as a natural dopant of nitrogen.
Results: Experimental results confirm that the cow urine has deoxygenated the graphene oxide to produce
graphene nanosheets, and simultaneously nitrogen atoms are successfully doped into graphene
lattice from cow urine. The current approach produces high yield N-doped graphene nanosheets with N
content ~ 3.2 at.% into the graphene lattice.
Conclusion: A strikingly simple, cost effective and environmental friendly approach has been demonstrated
for the synthesis of N-doped graphene nanosheets by simple solvothermal method using cow
urine as a natural dopant of N atoms. The proposed approach produces N-doped graphene nanosheets at
Keywords: Graphene, nitrogen doping, N-doped graphene, cow urine, green dopant, solvothermal method
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