Tungsten disulfide is a new type of nanomaterial that has attracted widespread attention in the scientific community in recent years due to its unique physical and chemical properties.
Basic properties of tungsten disulfide
Tungsten disulfide is a black-green inorganic compound with the molecular formula WS2 and a molecular weight 243.9. It has a layered structure, with each layer formed by alternating arrangement of tungsten and sulfur atoms. This layered structure gives tungsten disulfide good conductivity and stability. In addition, tungsten disulfide also has a high Young's modulus and hardness, making it an excellent material with mechanical properties.
Technical data of tungsten disulfide:
| CAS No: | 12138-09-9 | EINECS No: | 235-243-3 | MF: | WS2 |
| Grade Standard: | Industrial, Electronic | Purity: | 99.9% | Appearance: | Gray black |
| Specific surface area: | 80m2/g | Size: | 50-60nm, 100-200nm | Shape: | Amorphous |
| True density: | 7.5g/cm³ | Bulk density | 0.25g/cm³ | APS: | 40-80nm |
Preparation method of tungsten disulfide
Currently, the primary methods for preparing tungsten disulfide include chemical vapor deposition (CVD), liquid phase synthesis, and physical vapor deposition (PVD). Among them, liquid phase synthesis is the most commonly used method. This method involves dissolving compounds containing tungsten and sulfur in organic solvents and then chemically reacting the tungsten and sulfur in the solution through heating, stirring, and other processes, ultimately generating WS2 nanomaterials.
Tungsten disulfide (WS2) is a solid inorganic lubricating material and the future "king of lubrication." However, graphite and molybdenum disulfide (MoS2) are the most widely used solid lubricating materials. However, after a period of development, tungsten disulfide has a trend of replacing molybdenum disulfide or developing together with molybdenum disulfide.
What are the lubrication uses of tungsten disulfide?
1. WS2 powder can be used to wipe the threads of giant bolts and the valve core of glass valves.
2. WS2 grease, a grease with WS2 powder added, can be used for bearing lubricating high-temperature tunnel kiln cars.
3. WS2 oil agent, which is an oil agent made from WS2 powder, anti-corrosion agent, suspension agent, and mechanical oil, can be used in metal cutting, drilling, and other automated processing processes to improve the smoothness of machined parts and extend the service life of cutting tools and molds.
4. WS2 solid lubricating film, a film-forming agent composed of WS2 powder and epoxy resin or sodium silicate, can be used for institutions afraid of contamination or is occasionally utilized when idle for a long time.
5. Solid lubricating parts containing WS2, namely regions and components with self-lubricating properties made of WS2 powder, engineering plastics such as nylon, and metal or alloy powders such as copper and iron, such as bearings and gears.
Application of tungsten disulfide in other fields
Energy field: Tungsten disulfide, an excellent electrocatalyst, is widely used in fuel and solar cells. It can effectively improve the energy conversion efficiency and stability of batteries. In addition, tungsten disulfide can also be used as a solid lubricant, and its high Young's modulus and hardness make it an ideal lubricant material.
Electronic field: Due to its high electron mobility and stability, tungsten disulfide is widely used in electronic devices, such as field-effect transistors and logic circuits. In addition, tungsten disulfide can also be used as an electrode material, such as for lithium-ion batteries.
Biomedical field: Tungsten disulfide has good biocompatibility and non-toxic properties, making it widely used in the biomedical field. For example, it can be used as a drug carrier to improve efficacy and reduce side effects by controlling drug release speed and location. In addition, tungsten disulfide can also be used in area such as tissue engineering and regenerative medicine.
Environmental field: Due to its good photocatalytic and adsorption properties, tungsten disulfide is widely used in environmental governance. For example, it can be used for photocatalytic degradation of organic pollutant and heavy metal ion adsorbents.
High-quality tungsten disulfide powder supplier
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