Strongly luminescent monolayered MoS2 prepared by effective ultrasound exfoliation
Intense ultrasound in a pressurized batch reactor was used for preparation of monolayered MoS 2 nanosheets from natural mineral molybdenite. Exfoliation of bulk MoS 2 using ultrasound is an attractive route to large-scale preparation of monolayered crystals. To evaluate the quality of delamination,...
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Veröffentlicht in: | Nanoscale 2013-04, Vol.5 (8), p.3387-3394 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Intense ultrasound in a pressurized batch reactor was used for preparation of monolayered MoS
2
nanosheets from natural mineral molybdenite. Exfoliation of bulk MoS
2
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, MoS
2
quantum dots (MoSQDs) were prepared by a one-pot reaction by refluxing exfoliated nanosheets of MoS
2
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.
Intense ultrasound in a pressurized batch reactor was used for preparation of monolayered MoS
2
nanosheets from natural mineral molybdenite. |
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ISSN: | 2040-3364 2040-3372 |
DOI: | 10.1039/c3nr00192j |