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Molybdenum and rhenium disulfide synthesis via high-pressure carbonate melt

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Abstract

Various applications of transition metal dichalcogenides (TMDs) require preparation by exfoliation of precursor bulk materials. However, bulk TMDs are not always available in suitable forms and current synthesis methods may not result in appropriate crystals. This study reports synthesis of large crystals (50–100 μm) of MoS2 and ReS2, by recrystallisation of MoS2 powder or reaction of sulfate with perrhenic acid, respectively. The reactions have been performed at high pressure and temperature (≥1 GPa; ≥800 °C) in a liquid Ca-carbonate flux. The resulting crystals were characterised by electron microscopy imaging, EDS and WDS chemical analyses, and Raman spectroscopy. The carbonate matrix can be easily dissolved to recover the product TMDs. This method allows synthesis of large well-crystalline TMD compositions that are otherwise challenging to obtain.

Graphical abstract: Molybdenum and rhenium disulfide synthesis via high-pressure carbonate melt

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Publication details

The article was received on 08 Feb 2019, accepted on 03 Apr 2019 and first published on 08 Apr 2019


Article type: Paper
DOI: 10.1039/C9CE00188C
Citation: CrystEngComm, 2019, Advance Article

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    Molybdenum and rhenium disulfide synthesis via high-pressure carbonate melt

    M. Anenburg, CrystEngComm, 2019, Advance Article , DOI: 10.1039/C9CE00188C

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