What are the application areas of tungsten disulfide?

Tungsten disulfide cannot be obtained directly by processing natural ores. Due to its unique two-dimensional nanomaterial layered structure, the development of high-efficiency, environmentally friendly and economical nano-tungsten disulfide new functional materials has become a research hotspot. At present, the mainstream preparation schemes of nano-tungsten disulfide include mechanical peeling method, hydrothermal method, chemical vapor deposition method, sol-gel method, in-situ surface modification method, etc. Generally speaking, various methods are insufficient. The production cost of tungsten disulfide is relatively high.

 1. In the field of biomedical materials: from now to the future, tungsten disulfide can be used as a medical contrast agent for photothermal therapy. This is because tungsten disulfide is a layered two-dimensional material with a hexagonal crystal system, due to its strong absorption in the near infrared (NIR) region and good biocompatibility. Recently, researchers have tracked WS2 to assess its position in the cell and tissue environment, and developed a multifunctional nano-tungsten disulfide two-dimensional material, which combines medical diagnosis, imaging and treatment, and is widely used in biomedical detection and analysis, cancer treatment, and toxicity. Physiology, cell imaging, antibacterial, etc.

 2. In the field of mechanical lubricating materials, tungsten disulfide is a layered two-dimensional material with a hexagonal crystal system. In the WS2 layer, W and S are bonded through strong covalent bonds, and the SS molecular bond between layers is weak. Van der Waals force is combined, the interlayer force is weak, the bond energy is low, and displacement is easy to occur during the friction process, so the friction coefficient is low. In addition, nano-tungsten disulfide can adsorb and fill the uneven surface of the material in time, and play a certain self-repairing effect. Transition metal nano-tungsten disulfide can maintain excellent lubricating performance in the range of -273～425℃, and its performance is significantly better than traditional lubricating oil. It can adapt to a variety of high temperature and pressure, high vacuum, high load, high speed, high radiation, strong corrosion, Severe conditions such as ultra-low temperature are widely used in high-tech fields such as military, aerospace, satellites, and spacecraft. Molybdenum disulfide also has similar characteristics, but compared with the two, molybdenum disulfide pales in comparison.

 In the field of sensor manufacturing materials: Dichalcogens include two-dimensional materials that provide excitation characteristics, with metal semiconductor characteristics, fluorescence and rapid heterogeneous electron transfer characteristics. The use of sensing materials also shows a clear trend. For example, some researchers have successfully developed a selective room temperature ammonia sensor using WS2 nanomaterials as the sensing material, which exhibits good sensitivity and excellent ammonia selectivity at room temperature. The developed ammonia sensor shows excellent selectivity to formaldehyde, ethanol, benzene and acetone at room temperature.

3. In the field of catalysis, tungsten disulfide is an indirect semiconductor with a large specific surface area. Like tungsten oxide materials, it can also be used as a photocatalyst, which can absorb energy under visible light irradiation and generate electrons through transitions. The transition produces electron e and hole h. Holes react with water to form highly reactive, strong oxidizing hydroxyl radicals ·OH, which can degrade large organic dyes or organic substances into small organic molecules and inorganic ions. Photocatalyst is the main means for humans to control environmental pollution in the future, and its prospects are worth looking forward to.

 In addition, like other types of tungsten heteropolyacid catalysts, tungsten disulfide can also be used in petrochemicals. It has the characteristics of high cracking performance, stable and reliable catalytic activity, long service life, low toxicity, good thermal stability and chemical performance. It has good stability and can be used as an effective hydrogenation catalyst for oil field hydrocracking and hydrodesulfurization.

4. In the field of optoelectronics, tungsten disulfide is a bipolar semiconductor with the unique characteristics of n-type and p-type semiconductors. Layered tungsten disulfide has a two-dimensional layered crystal structure with strong planar covalent bonds inside. The interaction of the outer plane dominated by weak van der Waals forces makes high-quality heterojunction possible. At the same time, the heterojunction formed by stacking the special two-dimensional material graphene and layered WS2 also exhibits unique physical properties, which has attracted the attention of researchers and greatly promoted the use of layered micro (nano) tungsten disulfide in optoelectronics. The development of science, electronic devices, photovoltaic industry, transistor field. For example, researchers have applied tungsten disulfide to Q-switched erbium-doped pulsed lasers and transistors.

5. In the field of new energy, tungsten disulfide is one of the most anticipated materials. The structure of tungsten disulfide material is similar to graphene, and it has excellent characteristics of high specific capacity and high specific surface area. Tungsten disulfide has a layered structure connected by weak van der Waals forces, and its size is generally nanometers, with a large space ratio between layers, which can be used for hydrogen storage and hydrogen storage. Lithium storage. At the same time, its thermal stability is good, and the material can be reused. Cyclic charge and discharge is an excellent energy storage battery material, so it can be widely used in solar cells, fuel cell anodes, lithium battery anodes, super capacitors and many other aspects.

Nano-tungsten disulfide seems to be omnipotent, but researchers also believe that its main future applications and research will focus on medical, optoelectronics and new energy fields, because the application of tungsten disulfide is not irreplaceable whether it is lubrication or catalyst. of. On the contrary, due to the cost factor of tungsten disulfide at this stage, it must reflect its due value in the high-end field, which is also the focus of the future development of single-layer nano-tungsten disulfide.

Overview of WS2 tungsten disulfide lubricant additives

WS2 Tungsten disulfide is a layered value of gray-black hexagonal lattice. Each layer consists of two layers of sulfur atoms and two layers of sulfur atoms sandwiched between 2:1 tungsten atoms. Among them, there is a strong covalent bond between S atoms and W atoms, and the interlayer S atoms are connected by van der Waals force. The special crystal structure makes WS2 more excellent in extreme pressure performance, anti-wear and anti-wear properties, heat resistance and oxidation resistance.

WS2 Tungsten Disulfide Lubricant Additive Application

WS2 tungsten disulfide is used as solid lubricant, dry lubricant and self-lubricating composite material: Nano WS2 is the best solid lubricant, with a friction coefficient of 0.01~0.03, compressive strength up to 21.0 MPa, acid and alkali corrosion resistance, Excellent load resistance, non-toxic and harmless, wide operating temperature, long lubrication life, and low friction coefficient.

Nano WS2 tungsten disulfide is an important additive for the production of high-performance lubricants. The study found that adding an appropriate amount of WS2 nanoparticles to the lubricating oil can significantly improve the lubricating performance of the lubricating oil, reduce the friction coefficient by 20% to 50%, and increase the oil film strength by 30% to 40%. Its lubricating performance is far better than nano-molybdenum disulfide. Under the same conditions, the base oil lubricating performance of nano WS2 tungsten disulfide is better than that of conventional particles, and it has excellent lubricating performance. The results show that the combination of fluid lubrication and reliable lubrication has the advantage of adding nanoparticles and can achieve lubrication in the full range from room temperature to high temperature (≥800℃). so,

WS2 tungsten disulfide can be used as a lubricant, with better performance than molybdenum disulfide, lower friction coefficient and higher compressive strength. Separately used for high temperature, high pressure, high speed, high load and equipment operating in chemically active media. WS2 forging lubricant is matched with tungsten disulfide and other materials, which can extend the life of the mold and improve the finish of the product. The filling material is configured with PTFE and nylon to make self-lubricating parts. In addition, tungsten disulfide can also be used as a petrochemical catalyst. Its advantages are high cracking performance, stable and reliable catalytic activity, and long service life.

WS2 Tungsten Disulfide Lubricant Additive Price

The price of WS2 tungsten disulfide lubricating oil additive will vary randomly with factors such as production cost, transportation cost, international situation, and market supply and demand of WS2 tungsten disulfide lubricating oil additive. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for WS2 tungsten disulfide lubricant additive products, please feel free to contact to get the latest price of WS2 tungsten disulfide lubricant additive.

WS2 Tungsten Disulfide Lubricant Additive Supplier

As a global WS2 tungsten disulfide lubricant additive supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (the best engine oil additives for nano-diamond, lithium stearate, nano-copper and nano-oil additives), high-purity targets, functional ceramics and structural devices, and provide OEM services.