A Strategy to Produce Single and Double Layer Graphene Sheets

Abstract:

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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 I2D/IG 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.

Info:

Periodical:

Advanced Materials Research (Volumes 306-307)

Edited by:

Shiquan Liu and Min Zuo

Pages:

1435-1439

DOI:

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

Citation:

S.R. Dhakate et al., "A Strategy to Produce Single and Double Layer Graphene Sheets", Advanced Materials Research, Vols. 306-307, pp. 1435-1439, 2011

Online since:

August 2011

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Price:

$35.00

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