Issue 32, 2015
From the journal:

RSC Advances

Electrochemical exfoliation of graphite to produce graphene using tetrasodium pyrophosphate

M. K. Punith Kumar,a   Monika Nidhia  and  Chandan Srivastava*a  

* Corresponding authors

a Dept. of Materials Engineering, Indian Institute of Science (IISc), Bangalore-560012, India
E-mail: csrivastava@materials.iisc.ernet.in
Tel: +91-80-22932834

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.

Graphical abstract: Electrochemical exfoliation of graphite to produce graphene using tetrasodium pyrophosphate

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Article information

DOI
https://doi.org/10.1039/C5RA01304F
Article type
Communication
Submitted
22 Jan 2015
Accepted
02 Mar 2015
First published
02 Mar 2015

RSC Adv., 2015,5, 24846-24852

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Electrochemical exfoliation of graphite to produce graphene using tetrasodium pyrophosphate

M. K. Punith Kumar, M. Nidhi and C. Srivastava, RSC Adv., 2015, 5, 24846 DOI: 10.1039/C5RA01304F

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