Molybdenum disulfide (MoS₂) possesses a sizeable intrinsic band-gap. It takes the form of a layered structure, in which crystalline planes are bound together by relatively weak Van der Waals forces. Its unique chemical, mechanical, and electronic properties make it widely used as a lubricant and a photocatalytic material.

As a 2D semiconducting material, MoS₂ undergoes transformation from an indirect semiconductor in its bulk form (band-gap 1.2 eV) to a direct band-gap semiconductor (band-gap 1.9 eV) in its monolayer form. This makes MoS₂ an ideal candidate in the fields of physics, chemistry, biochemistry, and electronic engineering. Advanced applications are also emerging in FETs, energy storage, gas sensors, and many other electronic and photo-electronic devices.

MoS₂ quantum dots have strong quantum confinement and edge effects. Thus, their direct-bandgap properties find applications in hydrogen evolution reactions (HER), photocatalytic hydrogen evolution, bioimaging and electrochemical lithium storage.

General Information

CAS number	1317-33-5
Chemical formula	MoS2
Molecular weight	160.07 g/mol
Bandgap	1.23 eV ~ 1.9 eV [1]
Classification / Family	Transition metal dichalcogenides (TMDCs), 2D semiconductor Materials, Nano-electronics, Nano-photonics, Materials science

Product Details

Form	Powder
Preparation	Synthetic - Chemical Vapour Transport (CVT)
Purity	≥ 99.995%
Structure	Hexagonal
Electronic properties	2D Semiconductor
Melting point	2375 °C (lit.)
Colour	Black

Chemical Structure

Applications

MoS₂ powder is used for applications in thermoelectric-devices, sensors, LEDs, OPVs, and energy storage devices.

Synthesis

MoS₂ powder is obtained via the CVT method, with purity typically in excess of 99.995%.

Usage

Molybdenum disulfide MoS₂ powder is generally used to prepare MoS₂ quantum dots solutions and nano-platelettes by liquid exfoliation assisted by sonication. High-purity MoS₂ powder can also be used in CV deposition to prepare high quality mono-layer films.

Further information

More information on the properties, applications, processing and range of products available for molybdenum disulfide (MoS₂) is described on our MoS2 information page.

MSDS Documentation

Molybdenum disulfide powder MSDS sheet

Pricing

Product Code	Quantity	Price
M2107C1	500 mg	£168.00
M2107C1	1 g	£269.00

Literature and Reviews

1. Few-Layer MoS2: A Promising Layered Semiconductor, R. Ganatra et al., ACS Nano, 8 (5), 4074–4099 (2014); DOI: 10.1021/nn405938z.
2. Molybdenum disulfide quantum dots: synthesis and applications, N. Arul et al., RSC Adv., 6, 65670 (2016); DOI: 10.1039/c6ra09060e.
3. Preparation of Monolayer MoS2 Quantum Dots using Temporally Shaped Femtosecond Laser Ablation of Bulk MoS2 Targets in Water, B. Li et al., Sci. Rep., 7: 11182 (2017); DOI:10.1038/s41598-017-10632-3.
4. One-Step Synthesis of Water-Soluble MoS2 Quantum Dots via a Hydrothermal Method as a Fluorescent Probe for Hyaluronidase Detection, W. Gu et al., ACS Appl. Mater. Interfaces 8, 11272−11279 (2016); DOI: 10.1021/acsami.6b01166.
5. MoS2 Quantum Dot-Interspersed Exfoliated MoS2 Nanosheets, D. Gopalakrishnan et al., ACS Nano, 8 (5), 5297–5303 (2014); DOI: 10.1021/nn501479e.
6. Quantum confinement effects across two-dimensional planes in MoS2 quantum dots, Z. Gan et al., Appl. Phys. Lett. 106, 233113 (2015); doi: 10.1063/1.4922551

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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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