Tungsten Oxide Micron Powder (WO₃, 99.99%, 3 µm)
Technical Specifications:
- Chemical Formula: WO₃
- Purity: 99.99% (high purity)
- Particle Size: 3 µm (microns)
- Appearance: Yellow to light brown powder
- Density: Approximately 7.16 g/cm³
- Melting Point: 1,000°C (1,832°F)
- Boiling Point: Sublimes at high temperatures (does not have a definitive boiling point under normal pressure)
- Molecular Weight: 231.84 g/mol
- Solubility: Insoluble in water, soluble in acids like hydrochloric acid (HCl) and nitric acid (HNO₃)
- Crystal Structure: Monoclinic (depending on temperature and conditions)
- Refractive Index: ~2.0
Applications:
- Electrochromic Devices:
- Tungsten Oxide (WO₃) is used in the production of electrochromic devices, which can change their optical properties (such as color or transparency) when an electric field is applied. This feature is used in smart windows, which adjust their opacity to control light and heat transmission, improving energy efficiency in buildings and vehicles.
- Electrochromic mirrors and displays are also common applications where WO₃’s optical modulation properties are utilized.
- Catalysis:
- WO₃ is used as a catalyst or catalyst support in a variety of chemical reactions, particularly those involving oxidation reactions such as in methane reforming and hydrocarbon processing. It is important in refining processes and the production of specialty chemicals.
- It is also used in environmental catalysis, such as de-NOx (nitrogen oxide removal) processes for air purification.
- Energy Storage:
- Tungsten Oxide is used in the development of supercapacitors and batteries. Due to its high surface area and electrochemical properties, WO₃ is employed as an electrode material in supercapacitors, which store energy for quick discharge, making them useful in electronics, electric vehicles, and renewable energy storage systems.
- Pigments and Coatings:
- WO₃ is used as a yellow pigment in ceramics, glass, and coatings. The color produced is stable and resistant to high temperatures, making it useful in high-temperature paints and glazes for industrial applications.
- It is also utilized in the production of high-performance coatings that offer thermal resistance.
- Optical and Infrared Devices:
- Tungsten Oxide is used in optical devices due to its ability to absorb and reflect light in the infrared range. It is applied in infrared optics for thermal imaging systems and infrared sensors.
- WO₃ is also used in optical filters, which transmit or block certain wavelengths of light, useful in laser systems and optical communication systems.
- Hydrogen Production:
- Tungsten Oxide is explored as a catalyst in hydrogen production, particularly in processes like water splitting to produce hydrogen as a clean energy source. WO₃ can facilitate efficient photocatalytic and electrocatalytic processes for hydrogen generation.
- Semiconductor and Thin-Film Applications:
- WO₃ is used in thin-film applications in the semiconductor industry. Its unique electrical properties make it a candidate material for use in transistors, capacitors, and photovoltaic cells.
- It is also being investigated for use in transparent conducting films for solar cells and transparent electronics.
- Environmental Remediation:
- Tungsten Oxide is used in environmental applications such as wastewater treatment and air purification. Its catalytic properties help in the removal of harmful pollutants, including nitrogen oxides (NOx) and sulfur oxides (SOx), from industrial effluents and emissions.
- Thermal Insulation and Barrier Coatings:
- WO₃ is used in the development of thermal barrier coatings for aerospace and high-temperature applications. It helps protect components from extreme heat and corrosion, particularly in jet engines and turbine blades.
- Laser and Optoelectronic Devices:
- Tungsten Oxide is employed in laser technology and optoelectronic devices. Its ability to absorb specific wavelengths of light and undergo transitions based on external stimuli makes it useful in optical switching and modulating devices in communication technologies.
Tungsten Oxide Micron Powder (WO₃, 99.99%, 3 µm) is a versatile material with a wide range of applications, particularly in energy-efficient technologies, catalysis, optical devices, and environmental protection. Its high stability, excellent optical properties, and role in energy storage systems make it essential in green technologies and advanced manufacturing processes.
