Pricing

Product Code	Quantity	Price
M2144C1	1 g	£268.00

General Information

CAS number	‎12143-72-5
Chemical formula	TaS2
Molecular weight	245.07 g/mol
Bandgap	n/a
Synonyms	Dithioxotantalum, Tantalum (IV) sulfide, Bis(sulfanylidene)tantalum
Classification / Family	Transition metal dichalcogenides (TMDCs), 2D charge-density wave (CDW) materials, Nano-electronics, Nano-photonics, Superconductivity, Photovoltaic, Materials science

Product Details

Form	Powder
Preparation	Synthetic - chemical vapour transport (CVT)
Purity	≥ 99.995%
Structure	Hexagonal
Electronic properties	2D CDW materials
Melting point	> 3000 °C
Appearance	Black powder

General Description

Tantalum disulfide (TaS₂) is a family member of two-dimensional (2D) metallic transition metal dichalcogenides (MTMDCs). It is of great research interest due to its rich phase diagrams that include superconductivity, charge-density wave (CDW), and metal-insulator transitions.

Coexistence of CDW order and superconductivity has been found in atomically-thin TaS₂. Such properties are mainly attributed to its reduced dimensionality and the induced quantum confinement effect. Reduced dimensionality can strengthen superconductivity in the case of thin TaS_2, as opposed to the weakening effect that has been found in other 2D materials.

Applications

Tantalum disulfide powder can be used to grow large-area uniform, thickness-controllable 2H-TaS₂ films and domains for the investigation of fundamental physical phenomena (such as CWD). TaS₂ powder can also be exfoliated into ultra-thin films by liquid chemical exfoliation to explore its superconductivity.

Synthesis

Tantalum disulfide powder is obtained via the CVT method, with a purity in excess of 99.995% achieved.

Usage

Tantalum disulfide powder is suitable for liquid chemical exfoliation to prepare TaS₂ nanosheets and nanoparticles down to few-layer films. TaS₂ powder is also used for preparation of mono-layer and few-layer films via chemical vapour deposition (CVD).

Literature and Reviews

1. Enhanced superconductivity in atomically thin TaS2, E. Navarro-Moratalla et al., Nat. Commun., 7:11043 (2016); DOI: 10.1038/ncomms11043.
2. Two-dimensional metallic tantalum disulfide as a hydrogen evolution catalyst, J. Shi et al., Nat. Commun. 8, 958 (2017); DOI: 10.1038/s41467-017-01089-z.
3. Enhancement of superconductivity under pressure and the magnetic phase diagram of tantalum disulfide single crystals, M. Abdel-Hafiez et al., Sci. Rep., 6, 31824 (2016); DOI: 10.1038/srep31824.
4. 2H→1T Phase Engineering of Layered Tantalum Disulfides in Electrocatalysis: Oxygen Reduction Reaction, J. Luxa et al., Chem.Eur.J.,23,8082 –8091 (2017); DOI:10.1002/chem.201701494.

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To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.

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