Blogs, nanopowder   0   12 March 2025

What is Tungsten Oxide (WO₃) Nanopowder/Nanoparticles?

Tungsten Oxide (WO₃) Nanopowder/Nanoparticles are high-performance metal oxide nanomaterials known for their excellent electrochromic, photocatalytic, and semiconducting properties. Due to their high stability, optical tunability, and electrical conductivity, they are widely used in smart windows, gas sensors, lithium-ion batteries, coatings, and solar energy applications.

Chemical Properties of Tungsten Oxide (WO₃) Nanoparticles

  • Chemical Formula: WO₃
  • Molecular Weight: 231.84 g/mol
  • Density: ~7.16 g/cm³
  • Melting Point: ~1,470°C
  • Band Gap: ~2.6 – 3.0 eV (semiconductor)
  • Thermal Stability: High
  • Solubility: Insoluble in water, soluble in strong acids
  • Crystal Structure: Monoclinic, Orthorhombic, Cubic (phase-dependent)
  • CAS Number: 1314-35-8

Applications of Tungsten Oxide (WO₃) Nanoparticles

  1. Electrochromic & Smart Windows

    • Used in smart glass and electrochromic coatings to control light transmission and energy efficiency.
    • Applied in automotive windows, building facades, and self-dimming mirrors.

  2. Gas Sensors & Environmental Monitoring

    • Highly sensitive to NO₂, CO, H₂S, and ammonia gases, making it ideal for air quality monitoring.
    • Used in industrial and healthcare gas sensing applications.

  3. Photocatalysis & Solar Energy Conversion

    • Acts as a visible-light-driven photocatalyst for water purification, CO₂ reduction, and pollutant degradation.
    • Applied in hydrogen production via water splitting.

  4. Energy Storage & Lithium-Ion Batteries (LIBs)

    • Used as anode material in lithium-ion and sodium-ion batteries.
    • Enhances battery cycle life and stability.

  5. Optical & UV-Blocking Coatings

    • Applied in heat-reflective coatings, UV-blocking films, and protective optical layers.
    • Used in solar cells and anti-glare coatings.

  6. Catalysis & Chemical Processing

    • Acts as a catalyst in petrochemical refining, hydrogenation reactions, and industrial oxidation processes.

  7. Biomedical & Antibacterial Coatings

    • Investigated for antimicrobial and biosensing applications.
    • Used in drug delivery and therapeutic nanomedicine.

  8. 3D Printing & Advanced Materials

    • Applied in nanocomposites, thermal barriers, and wear-resistant materials.

Tungsten Oxide (WO₃) Nanoparticle Prices

Pricing varies based on purity, particle size, and industry-specific applications.

  • Industrial Grade (99% Purity): $50 – $300 per kg
  • High Purity (99.9% – 99.99% for Electronics & Energy Applications): $500 – $2,500 per kg
  • Ultra-High Purity (99.999% for Research & Optical Coatings): $3,000 – $8,000 per kg

Prices fluctuate based on global tungsten supply, production costs, and demand in high-tech industries.

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