Tungsten Oxide Nanopowder Water Dispersion ( WO3, 20wt%, 20-70nm)

Tungsten Oxide Nanopowder Water Dispersion (WO₃, 20wt%, 20-70nm) is a water-based dispersion containing tungsten oxide (WO₃) nanoparticles. Here are the key technical specifications and properties of this material:

1. Composition and Properties:

• Material: The dispersion contains tungsten oxide (WO₃), which is a chemical compound of tungsten and oxygen. Tungsten oxide is widely used in applications like electronics, energy storage, and catalysis.
• Concentration: The dispersion has a 20wt% concentration of tungsten oxide nanoparticles.
• Particle Size: The particles are in the 20-70nm size range, which provides a high surface area and can influence the material’s reactivity, optical properties, and conductivity.
• Water-Based Dispersion: The nanoparticles are dispersed in water, making this material safer and more environmentally friendly compared to solvent-based dispersions.

2. Key Features:

• Nanoparticle Size Range: The particles in the dispersion have sizes between 20-70 nm, which provides good surface area for enhanced reactivity and interaction with other materials.
• High Concentration: The 20wt% concentration ensures that there is a significant amount of WO₃ nanoparticles in the dispersion, making it suitable for industrial-scale applications.
• Water-Based: As a water-based dispersion, it is safer to handle and use, particularly in industrial and manufacturing processes, compared to solvents that may be hazardous or environmentally harmful.

3. Applications:

• Electrochromic Devices: Tungsten oxide (WO₃) is used in electrochromic devices, where it changes color when an electric current is applied. This property is used in smart windows, displays, and mirrors.
• Catalysis: WO₃ nanoparticles are used as catalysts or catalyst supports in various chemical reactions, such as the oxidation of hydrocarbons and the reduction of nitrogen oxides.
• Energy Storage: Tungsten oxide is also being explored in energy storage applications, including batteries and supercapacitors, due to its ability to store and release energy efficiently.
• Hydrogen Production: WO₃ nanoparticles are used in photocatalytic water splitting for hydrogen production, an important process in renewable energy technologies.
• Sensors: Due to its unique electrical and optical properties, WO₃ nanoparticles are used in the development of gas sensors and chemical sensors, particularly for detecting gases like NO₂ and CO.
• Coatings and Films: Tungsten oxide is used in the creation of thin coatings and films for electronics, solar cells, and displays, particularly due to its electrochromic properties.

4. Advantages:

• High Surface Area: The 20-70nm particle size range provides a high surface area, making the material more reactive and effective in applications like catalysis, energy storage, and sensing.
• Environmental Safety: Being a water-based dispersion, it is safer and more environmentally friendly compared to solvent-based dispersions.
• Versatility: The material is suitable for a wide range of applications across different industries, including electronics, energy, catalysis, and coatings.

5. Handling and Storage:

• Storage: Store the dispersion in a cool, dry place and seal the container to prevent evaporation of water and to maintain dispersion stability.
• Handling: While the dispersion is water-based, it’s still advisable to wear appropriate protective gear such as gloves and goggles when handling large quantities or applying the material in processes.
• Stirring: Over time, the nanoparticles may settle in the dispersion, so regular stirring is recommended to keep the particles evenly suspended in the water.

6. Potential Limitations:

• Particle Size: The particle size range of 20-70 nm might not be ideal for all applications. Some specific applications may require smaller particles to achieve enhanced catalytic activity or conductivity.
• Stability: Like many nanoparticle dispersions, WO₃ dispersions may face sedimentation over time. Proper mixing or use of dispersing agents can help maintain uniformity.

Summary:

Tungsten Oxide Nanopowder Water Dispersion (WO₃, 20wt%, 20-70nm) is a water-based dispersion of tungsten oxide nanoparticles. The 20wt% concentration and 20-70nm particle size make it suitable for a variety of applications, including electrochromic devices, catalysis, energy storage, and sensors. It offers the advantages of high surface area, environmental safety, and versatility. However, users should be mindful of potential sedimentation and the need for proper mixing during storage.