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Issue 8, 2013
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Strongly luminescent monolayered MoS2 prepared by effective ultrasound exfoliation

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Abstract

Intense ultrasound in a pressurized batch reactor was used for preparation of monolayered MoS2nanosheets from natural mineral molybdenite. Exfoliation of bulk MoS2 using ultrasound is an attractive route to large-scale preparation of monolayered crystals. To evaluate the quality of delamination, methods like X-ray diffraction, Raman spectroscopy and microscopic techniques (TEM and AFM) were employed. From single- or few-layered products obtained from intense sonication, MoS2quantum dots (MoSQDs) were prepared by a one-pot reaction by refluxing exfoliated nanosheets of MoS2 in ethylene glycol under atmospheric pressure. The synthesised MoSQDs were characterised by photoluminescence spectroscopy and laser-scattering particle size analysis. Our easy preparation leads to very strongly green luminescing quantum dots.

Graphical abstract: Strongly luminescent monolayered MoS2 prepared by effective ultrasound exfoliation

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Publication details

The article was received on 10 Jan 2013, accepted on 15 Feb 2013 and first published on 19 Feb 2013


Article type: Paper
DOI: 10.1039/C3NR00192J
Nanoscale, 2013,5, 3387-3394

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    Strongly luminescent monolayered MoS2 prepared by effective ultrasound exfoliation

    V. Štengl and J. Henych, Nanoscale, 2013, 5, 3387
    DOI: 10.1039/C3NR00192J

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