A Strategy to Produce Single and Double Layer Graphene Sheets

S.R. Dhakate; N. Chauhan; S. Sharma; R.B. Mathur

doi:10.4028/www.scientific.net/AMR.306-307.1435

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 306-307A Strategy to Produce Single and Double Layer...

A Strategy to Produce Single and Double Layer Graphene Sheets

Abstract:

We report an easy and scaleable approach to produce single and double layer graphene (Gr)-sheet from re-exfoliation of expanded graphite (EG) with large area. Transmission and scanning electron microscopic observations show that the Gr-sheets have an area of ~ (12 x 10) μm². Raman spectroscopy has confirmed the presence of single and double layer Gr-sheet with I_2D/I_G ratio as ~ 1.7. Scanning probe microscopy studies reveals that on re-exfoliation of EG, thickness of Gr-layer decreases from 6-7 nm to 0.8-1.1 nm. This infers that re-exfoliation overcomes the problem of insufficient oxidation or inadequate pressure buildup during heat treatment.

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Advanced Materials Research (Volumes 306-307)

Pages:

1435-1439

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.306-307.1435

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Online since:

August 2011

Authors:

S.R. Dhakate, N. Chauhan, S. Sharma, R.B. Mathur

Keywords:

Expanded Graphite (EG), Graphen, Graphite, Re-Exfoliation

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