Molybdenum Disulfide (MoS2), an inorganic compound with the CAS No. 1317-33-5 and molecular formula MoS2, is a remarkable material known for its exceptional properties and widespread industrial applications. Appearing as a gray-black, farinose solid with a molecular weight of 160.07, MoS2 naturally occurs as the mineral molybdenite, which is the primary ore for molybdenum. Its unique structure and robust performance characteristics have positioned it as an indispensable material in various demanding environments.

The distinctive efficacy of Molybdenum Disulfide largely stems from its layered crystal structure. In this arrangement, a plane of molybdenum atoms is precisely sandwiched between two planes of sulfide ions. While strong covalent bonds hold these three strata together to form a monolayer, individual MoS2 monolayers are held together by relatively weak Van der Waals forces. This inherent characteristic allows the layers to easily slide over one another, conferring superior lubricating properties. Unlike graphite, MoS2 does not require the presence of water vapor to exhibit its excellent lubrication capabilities, making it highly effective in extreme conditions where conventional lubricants often fail. These include high-temperature, low-temperature, high-load, and high-speed environments, as well as in chemical corrosion settings and modern ultra-vacuum applications. Its robust nature ensures long-lasting lubrication, reducing friction and wear even under immense pressure, often exceeding 250,000 pounds per square inch.

Beyond its primary role as a solid lubricant, Molybdenum Disulfide offers a spectrum of advanced applications across numerous industries. In catalysis, MoS2 is widely employed as a cocatalyst, particularly for hydrodesulfurization processes in petrochemistry. It also serves as an effective hydrogenation catalyst for organic synthesis, converting nitro compounds to amines and facilitating reductive amination, even offering resistance to sulfur poisoning. Its affordability compared to noble metal catalysts makes it a preferred choice for many industrial chemical processes.

In the burgeoning field of electronics and optoelectronics, MoS2 stands out due to its tunable electronic bandgap. While bulk MoS2 functions as an indirect bandgap semiconductor, its monolayer form exhibits a direct bandgap, a critical feature for high-performance electronic and optical devices. This property enables its use in field-effect transistors (FETs) with impressive on/off ratios of 10⁸, making it highly attractive for efficient logic circuits and low-power electronic devices. Molybdenum Disulfide also plays a role in memristors, photodetectors, flexible electronics, and is even being researched for groundbreaking applications in valleytronics, where discrete 'valleys' in its electronic band structure could potentially store and process information.

The material's utility extends to energy applications, where it serves as an efficient catalyst for hydrogen evolution, including water electrolysis, and shows promise in oxygen reduction and evolution reactions. Furthermore, MoS2 is being explored as a cathode material in advanced batteries and has even demonstrated superconductivity in its monolayer form under specific conditions. Its unique optical properties, including strong fluorescence in the visible range when in nanosheet form, also make it an ideal candidate for highly sensitive biosensors and gas sensors, capable of detecting various analytes and noxious gases with high selectivity and low noise.

For industries seeking high-performance materials, Molybdenum Disulfide is available in various grades, typically with an assay of 98% to 99% min. It is supplied in practical packaging options such as 25kg drums. When considering the purchase of MoS2, it is crucial to seek a reliable manufacturer or supplier who adheres to stringent quality control standards. Pricing can vary based on purity, particle size, and quantity. Reputable suppliers ensure that the product meets specific industrial requirements, from enhancing the longevity of mechanical components to enabling breakthroughs in next-generation technologies. To buy premium Molybdenum Disulfide or inquire about its price, consulting with an experienced chemical supplier is highly recommended to ensure the optimal product for your specific needs.