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Issue 12, 2013
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Critical parameters in exfoliating graphite into graphene

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Dispersing graphite into few-layers graphene sheets (GS) in water is very appealing as an environmental-friendly, low-cost, low-energy method of obtaining graphene. Very high GS concentrations in water (0.7 mg mL−1) were obtained by optimizing the nature of dispersant and the type of ultra-sonic generator. We find that a multi-step sonication procedure involving both tip and bath sources considerably enhances the yield of exfoliated GS. Raman and transmission electron microscopy indicate few-layers graphene patches with typical size of ∼0.65 μm in one dimension and ∼0.35 μm in the other. These were further employed in combination with water-dispersed CNTs to fabricate conductive transparent electrodes for a molecularly-controlled solar-cell with an open-circuit voltage of 0.53 V.

Graphical abstract: Critical parameters in exfoliating graphite into graphene

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The article was received on 18 Jun 2012, accepted on 09 Jan 2013 and first published on 10 Jan 2013

Article type: Paper
DOI: 10.1039/C3CP43205J
Citation: Phys. Chem. Chem. Phys., 2013,15, 4428-4435
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    Critical parameters in exfoliating graphite into graphene

    M. Buzaglo, M. Shtein, S. Kober, R. Lovrinčić, A. Vilan and O. Regev, Phys. Chem. Chem. Phys., 2013, 15, 4428
    DOI: 10.1039/C3CP43205J

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