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The sequential continuous-flow hydrothermal synthesis of molybdenum disulphide
Peter W Dunne1, Alexis S Munn, Chris L Starkey
1Department of Chemical and Environmental Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, UK. Edward.Lester@Nottingham.ac.uk.
Chemical Communications (Cambridge, England)
|February 10, 2015
Summary
Researchers developed a continuous flow hydrothermal synthesis for molybdenum disulphide (MoS2). This method offers insights into MoS2 formation, producing tangled nanosheets from amorphous precursors.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Engineering
Background:
- Molybdenum disulphide (MoS2) is recognized for its catalytic and lubricating properties.
- MoS2 is extensively studied as a graphene analogue and a type of inorganic fullerene.
Purpose of the Study:
- To report the first continuous flow hydrothermal synthesis of MoS2.
- To investigate the mechanism of MoS2 formation using a continuous flow system.
Main Methods:
- Continuous flow hydrothermal synthesis.
- Stepwise production of MoS2 with controlled reaction times.
- Analysis of reaction intermediates and final product morphology.
Main Results:
- The synthesis involves sulphidation of molybdate anions to thiomolybdate species.
- Acidification in flow transforms thiomolybdates to amorphous MoS3.
- Hydrothermal treatment decomposes amorphous MoS3 into tangled MoS2 nanosheets.
Conclusions:
- Continuous flow hydrothermal synthesis provides a flexible and rapid method for MoS2 production.
- The stepwise synthesis offers valuable mechanistic insights into MoS2 formation.
- The process yields MoS2 in the form of tangled nanosheets.
