I have tried to exfoliate MoS2 via liquid exfolaition method(using NMP as well as Ethanol/water mixture as solvent) . Always Iam getting MoS2 nanoflakes and MoS2 QDs. Is there any way to separate them in an efficient manner?
Article MoS2 Quantum Dots Interspersed Exfoliated MoS2 Nanosheets.
The efficient manner of seperation is insufficient.
There is a paper for you: MoS2 Quantum Dot-Interspersed Exfoliated MoS2 Nanosheets
Here is the abstract.
We report the synthesis of heterodimensional nanostructures of MoS2 quantum dots interspersed in few-layered sheets of MoS2, using a liquid exfoliation technique in organic solvents. This unique hybrid morphology results from the optimized experimental conditions involving bath sonication followed by ultrasound probe sonication. We show that such heterodimensional hybrid materials could easily be extracted from the solvent as precipitates when post-treated with less polar volatile solvents such as chloroform. Such tailored MoS2 nanostructures, when directly used as electrodes for hydrogen evolution reaction, showed excellent electrocatalytic activity with low overpotential. Hence, we believe this could lead to large-scale synthesis of liquid-exfoliated layered nanostructures for their potential applications.
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