What is Bismuth Oxide (Bi₂O₃) Nanopowder/Nanoparticles?

Bismuth Oxide (Bi₂O₃) Nanopowder/Nanoparticles are high-performance metal oxide nanomaterials known for their high refractive index, strong photocatalytic activity, and superior electrical conductivity. Due to their chemical stability, non-toxicity, and excellent optical properties, they are widely used in electronics, energy storage, catalysts, sensors, and biomedical applications.

Chemical Properties of Bismuth Oxide (Bi₂O₃) Nanoparticles

• Chemical Formula: Bi₂O₃
• Molecular Weight: 465.96 g/mol
• Density: ~8.9 g/cm³
• Melting Point: ~825°C
• Band Gap: ~2.1 – 2.8 eV (semiconducting properties)
• Refractive Index: ~2.5 – 3.0
• Solubility: Insoluble in water, soluble in acids
• Crystal Phases: Monoclinic (α-Bi₂O₃), Tetragonal (β-Bi₂O₃)
• CAS Number: 1304-76-3

Applications of Bismuth Oxide (Bi₂O₃) Nanoparticles

1. Electronics & Semiconductor Industry

   • Used in electronic ceramic components, varistors, and capacitors.
   • Applied in thin-film coatings for microelectronics.

2. Energy Storage & Solid Oxide Fuel Cells (SOFCs)

   • Acts as a high-oxygen ion conductor in fuel cells and oxygen sensors.
   • Enhances battery efficiency and charge storage in lithium-ion and solid-state batteries.

3. Photocatalysis & Environmental Applications

   • Used in visible-light-driven photocatalysts for water purification and air treatment.
   • Effective in decomposing organic pollutants and heavy metals.

4. Biomedical & Pharmaceutical Applications

   • Used in X-ray contrast agents and radiotherapy due to its biocompatibility.
   • Investigated for antibacterial coatings and drug delivery applications.

5. Coatings & Optical Materials

   • Enhances refractive index in optical coatings, lenses, and displays.
   • Used in transparent conductive films for optoelectronics.

6. Catalysts & Chemical Processing

   • Acts as a catalyst in oxidative reactions, organic synthesis, and environmental catalysis.
   • Used in fuel desulfurization and gas sensors.

7. Glass & Ceramic Industry

   • Provides high-opacity and brightness in specialty glass, ceramic glazes, and pigments.
   • Used in lead-free glass production and UV-shielding materials.

8. Nanotechnology & Advanced Materials

   • Applied in nanocomposites, smart coatings, and next-generation materials.
   • Used in self-cleaning surfaces and anti-corrosion coatings.

Bismuth Oxide (Bi₂O₃) Nanoparticle Prices

Pricing depends on purity, particle size, and industry-specific modifications.

• Industrial Grade (99% Purity): $50 – $200 per kg
• High Purity (99.9% – 99.99% for Electronics & Catalysis): $500 – $2,000 per kg
• Ultra-High Purity (99.999% for Research & Medical Applications): $3,000 – $8,000 per kg

Prices fluctuate based on market demand, rare earth metal availability, and production methods.