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
- Few-Layer MoS2: A Promising Layered Semiconductor, R. Ganatra et al., ACS Nano, 8 (5), 4074–4099 (2014); DOI: 10.1021/nn405938z.
- Molybdenum disulfide quantum dots: synthesis and applications, N. Arul et al., RSC Adv., 6, 65670 (2016); DOI: 10.1039/c6ra09060e.
- 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.
- 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.
- MoS2 Quantum Dot-Interspersed Exfoliated MoS2 Nanosheets, D. Gopalakrishnan et al., ACS Nano, 8 (5), 5297–5303 (2014); DOI: 10.1021/nn501479e.
- 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
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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