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Electrochemical exfoliation of graphite for producing graphene using saccharin

Kumar, Punith MK and Shanthini, S and Srivastava, Chandan (2015) Electrochemical exfoliation of graphite for producing graphene using saccharin. In: RSC ADVANCES, 5 (66). pp. 53865-53869.

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Official URL: http://dx.doi.org/10.1039/c5ra07846f

Abstract

A green electrochemical exfoliation route to produce graphene from graphite electrode has been provided. Saccharin which is a non-toxic and biocompatible artificial sweetener was used as an intercalating agent in aqueous media. Graphene samples were produced using five different exfoliation potentials. Microscopic and spectroscopic analysis confirmed the presence of few layer graphene sheets in as-exfoliated product. Important observations made were: (a) graphene layers from nano-to-micro meter sizes were produced; (b) number of graphene layers decreased with increase in the intercalation potential, (c) yield of graphene increased with increase in the exfoliation potential and (d) defect density in the exfoliated graphene layer was sensitive to the exfoliation potential in a way that with increase in the exfoliation potential the defect density initially increased and then eventually decreased.

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
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 31 Jul 2015 14:01
Last Modified: 31 Jul 2015 14:01
URI: http://eprints.iisc.ac.in/id/eprint/51971

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