What is molybdenum disulfide?
As a typical representative of low-dimensional transition metal sulfide, molybdenum disulfide is a black powder composed of two chemical elements, transition metal molybdenum (atomic number 42) and nonmetallic oxygen (atomic number 8). It is also an inorganic compound with positive quaternary molybdenum ion (Mo4+) and negative divalent oxygen ion (O2-). It is the main component of molybdenite. "MoS2" goes "Molybdenum disulfide". The main component of molybdenite. Black solid powder with a metallic luster. Chemical formula MoS2, melting point 2375℃, density 4.80g/cm3 (14℃), Mohs hardness 1.0 ~ 1.5. [1] Decomposition begins at 1370℃ and becomes molybdenum and sulfur at 1600℃. When 315℃ is heated in the air, it begins to be oxidized. As the temperature rises, the oxidation reaction is accelerated. Molybdenum disulfide is insoluble in water, dilute acid, and concentrated sulfuric acid, generally insoluble in other acids, bases, and organic solvents, but soluble in aqua regia and boiled concentrated sulfuric acid. Slow oxidation occurs at 400 ℃ to form molybdenum trioxide.
Preparation method of molybdenum disulfide
Chemical synthesis: synthesis can produce sulfide with high purity, fewer impurities, and fine particle size, and can prepare sulfide in line with different functional requirements, so the production of nano-sulfide by synthesis has been a concern. There are many ways to prepare nano MoS2, such as ammonium tetrathiomolybdate thermal decomposition, hydrogen sulfide or sulfur steam reduction, high energy ball milling, carbon nanotubes space limitation method, hydrothermal synthesis method, high energy physics means and chemical method combination, etc. Generally, there are two preparation methods: directly react tungsten or molybdenum source with a sulfur source to get nano MoS2 or react tungsten or molybdenum source with a sulfur source first to get precursor, and then decompose or reduce the precursor into MoS2 through appropriate methods.
Development of molybdenum disulfide
To the surprise of electronics makers, all TMDs are semiconductors. They are almost as thin as graphene (in molybdenum disulfide, two layers of sulfur are sandwiched between one molybdenum atom), but they have other advantages. In the case of molybdenum disulfide, one advantage is the speed at which electrons travel in flat sheets, known as electron mobility. Molybdenum disulfide has an electron migration rate of about 100cm2/vs. (i.e., 100 electrons per square centimeter per volt second), which is far lower than the 1,400 cm2/vs. The electron migration rate of crystalline silicon but better than the rate of amorphous silicon and other ultra-thin semiconductors that scientists are studying for future electronics, such as flexible displays and other electronic products that can stretch flexibly. The research shows that molybdenum disulfide is also easy to make, even in large, two-dimensional pieces. This allows engineers to examine their performance in electronics very quickly. In 2011, a team of researchers led by Andras Kis of the Swiss Federal Institute of Technology reported in Nature Nanotechnology that they had made the first transistors from a single layer of molybdenum disulfide just 0.65 nanometres thick. Those products, and those that followed, turned out to have other unique properties than their more technologically advanced silicon-based counterparts.
Price of molybdenum disulfide
Molybdenum disulfide particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Molybdenum disulfide. A large amount of large amount will be lower. The Price of molybdenum disulfide is on our company's official website.
Molybdenum disulfide supplier
Mis-Asia is a reliable and high-quality global chemical material supplier and manufacturer. It has over 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including molybdenum disulfide, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective molybdenum disulfide, you are welcome to contact us or inquire at any time.
