Overview of CAS 1317-33-5 Molybdenum disulfide MoS2
Metal powder is a common form of metal that has been processed into fine particles, ranging from a few micrometers to over 100 microns in diameter. It plays a crucial role in various industrial applications due to its unique properties and versatility.
Features of CAS 1317-33-5 Molybdenum disulfide MoS2
Physical Characteristics
Particle Size: Ranging from nanometers to hundreds of micrometers, the size distribution significantly influences the powder’s flowability, packing density, and sintering behavior.
Shape: Particles can be spherical, irregular, flake-like, or dendritic, each shape affecting the final product’s mechanical properties and surface finish.
Purity: Depending on the production method, metal powders can achieve high levels of purity, critical for applications like electronics and aerospace where impurities can degrade performance.
Density: While less dense than their solid counterparts due to the presence of air between particles, metal powders can be densely packed during processing to approach the density of the solid metal.
Chemical Properties
Reactivity: Some metal powders, particularly aluminum and titanium, are highly reactive with air and moisture, necessitating careful handling and storage under inert atmospheres or vacuum.
Oxidation: Exposure to air can lead to surface oxidation, forming a passive layer that affects sintering and other processes. This can be managed through surface treatment or use of protective atmospheres.
(CAS 1317-33-5 Molybdenum disulfide MoS2)
Parameters of CAS 1317-33-5 Molybdenum disulfide MoS2
Molybdenum disulfide (MoS2), with the chemical formula CAS 1317-33-5, is a fascinating inorganic compound that has garnered significant attention due to its unique properties and versatile applications. This compound consists of molybdenum (Mo) atoms covalently bonded to sulfur (S) atoms, forming a layered structure that exhibits remarkable mechanical, thermal, and electronic characteristics.
At its core, MoS2 is a transition metal dichalcogenide, belonging to the MX2 family, where M represents a transition metal and X is a chalcogen (sulfur in this case). The crystal structure of MoS2 is primarily in the form of a trigonal prismatic arrangement, with molybdenum atoms sandwiched between hexagonal layers of sulfur atoms, held together by weak van der Waals forces. This layered nature gives rise to its characteristic flexibility and enables the formation of different polymorphs, such as the well-known monoclinic and hexagonal structures.
One of the most striking features of MoS2 is its optical properties. It is known for its high opacity and strong light absorption in the visible spectrum, making it an attractive material for optoelectronic applications like photodetectors and solar cells. When exposed to light, MoS2 can generate electron-hole pairs, which can be harnessed for energy conversion or signal detection. Moreover, its direct bandgap around 1.8 eV allows for efficient light absorption, particularly in the near-infrared region.
Another intriguing aspect of MoS2 is its exceptional mechanical strength and thermal stability. It possesses a high Young’s modulus, approaching that of steel, yet maintaining a lightweight nature. This makes it suitable for use in high-stress applications, such as aerospace components or wearable electronics. Additionally, MoS2’s thermal conductivity, although lower than metals, is still relatively high, contributing to its thermal management capabilities.
In the realm of catalysis, MoS2 holds promise as a catalyst support material, especially for reactions involving hydrogen sulfide (H2S) or sulfur compounds. Its high surface area and sulfur-rich environment enable selective adsorption and activation of reactants, making it an effective catalyst for processes like hydrodesulfurization and hydrogenation reactions.
Furthermore, MoS2 has recently gained attention in the field of two-dimensional (2D) materials, where atomically thin sheets of MoS2, known as monolayers, exhibit extraordinary electronic properties. Monolayer MoS2 is a direct-bandgap semiconductor, which opens up possibilities for novel electronic devices like transistors, sensors, and photodetectors. Its ability to switch between a conducting and insulating state, depending on the applied external stimuli, is known as the “intrinsic” or “photoexcited” valleytronics effect.
In summary, MoS2, with its CAS number 1317-33-5, is a versatile material with a wide range of applications due to its unique combination of physical and chemical properties. Its layered structure, optical, mechanical, and catalytic characteristics make it a promising candidate for various technologies, from optoelectronics and energy conversion to advanced materials and sustainable processes. As research continues to unravel its potential, molybdenum disulfide is poised to play a pivotal role in shaping the future of science and engineering.
(CAS 1317-33-5 Molybdenum disulfide MoS2)
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