Tungsten Disulfide (WS2)
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CAS No. 12138-09-9
Tungsten disulfide (WS2) is an inorganic compound of tungsten and sulfur and is part of the metal dichalcogenides material group. WS2 occurs naturally as tungstenite but can also be created synthetically. WS2 has a layered structure with tungsten atoms appearing in a trigonal prismatic coordination sphere.
WS2 is useful as a dry lubricant similar to MoS2. Tungsten disulfide demonstrates exceptional lubricity and virtually eliminates friction. WS2 can also be added to lubricating greases and oils. It has a high dropping point, high oil film strength, a low friction coefficient, and is effective in temperatures ranging from -270℃ to 1300 ℃, making it ideal for a variety of applications including military and aviation. It’s also suitable for electrical applications such as transistors, sensors, and photocatalytic devices.
Tungsten disulfide from ACS Material is synthesized using our proprietary dry method and is available in a powder or a dispersion and with various particle sizes. Our WS2 meets the highest standards for quality and purity. If you have any questions about this or any of our advanced nanomaterials, please contact a member of our team for details and specifications.
Transistor, sensor, photocatalytic, electronic device. Tungsten disulfide will be supplied as powder or dispersion, and it has good solubility in water and ethanol.
If you have any questions, please contact us, and we will try our best to provide the solutions for you.
1. What does "dry method" refer to and is there any more information that can be given regarding the preparation method? Unfortunately, no other information can be provided regarding the preparation method. Its a trade secret!
2. Does ACS give a classification of the crystal structure of the powder? It is a hexagonal crystal system.
Research Citations of ACS Material Products
- Lu, Chang, et al. “Comparison of MoS2, WS2, and Graphene Oxide for DNA Adsorption and Sensing.” Langmuir, vol. 33, no. 2, May 2017, pp. 630–637., doi:10.1021/acs.langmuir.6b04502.
- Liu, Yibo, and Juewen Liu. “Hybrid nanomaterials of WS2 or MoS2 nanosheets with liposomes: biointerfaces and multiplexed drug delivery.” Nanoscale, vol. 9, no. 35, 2017, pp. 13187–13194.
- Wang, Liu, et al. “Transition Metal Dichalcogenide Nanosheets for Visual Monitoring PCR Rivaling a Real-Time PCR Instrument.” ACS Applied Materials & Interfaces, vol. 10, no. 5, 2018, pp. 4409–4418., doi:10.1021/acsami.7b15746.
- Giust, Davide, María Isabel Lucío, Otto L. Muskens, and Antonios G. Kanaras. "Interactions of DNA coated upconversion nanoparticles with 2D materials." In Colloidal Nanoparticles for Biomedical Applications XIII, vol. 10507, p. 105070U. International Society for Optics and Photonics, 2018.
- Lau, K. Y., A. A. Latif, MH Abu Bakar, F. D. Muhammad, M. F. Omar, and M. A. Mahdi. "Mechanically deposited tungsten disulfide saturable absorber for low-threshold Q-switched erbium-doped fiber laser." Applied Physics B 123, no. 8 (2017): 221.
- Hejazi, Davoud, Shuangjun Liu, Sarah Ostadabbas, and Swastik Kar. "Bayesian Inference-enabled Precise Optical Wavelength Estimation using Transition Metal Dichalcogenide Thin Films." arXiv preprint arXiv:1901.09452 (2019).