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Electrochemical exfoliation of graphite to produce graphene using tetrasodium pyrophosphate

Kumar, Punith MK and Nidhi, Monika and Srivastava, Chandan (2015) Electrochemical exfoliation of graphite to produce graphene using tetrasodium pyrophosphate. In: RSC ADVANCES, 5 (32). pp. 24846-24852.

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Official URL: http://dx.doi.org/10.1039/c5ra01304f

Abstract

An electrochemical exfoliation based synthetic methodology to produce graphene is provided. An eco-friendly and non-toxic tetrasodium pyrophosphate solution in which the pyrophosphate anion acts as an intercalating ion was used as the electroactive media. Five different ion intercalation potentials were used. Characterization by microscopy, X-ray diffraction, Raman spectroscopy and UV-Visible spectroscopic techniques confirmed that all the potentials produced nano to micrometer sized graphene sheets. No trace of graphene oxide was detected. It was observed that (i) an increase in the intercalation potential increased the graphene yield and (ii) the defect density of graphene did not change significantly with a change in the intercalation potential.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Keywords: FUEL-CELLS; RAMAN-SPECTROSCOPY; HIGH-QUALITY; SHEETS; OXIDE; NANOPARTICLES; CARBON; FLAKES
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 24 Apr 2015 06:18
Last Modified: 24 Apr 2015 06:18
URI: http://eprints.iisc.ac.in/id/eprint/51404

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