Silver (Ag) Nanopowder/Nanoparticles
Purity: 99.95%, Size: 28–48 nm, Metal Basis
Silver has long been recognized for its antimicrobial properties, and the high surface area of its nanopowder form significantly enhances its effectiveness. Silver nanopowders are versatile materials with broad application potential due to their unique physical, electrical, and optical properties. They are also utilized in electronics and photonics, where their conductive and plasmonic characteristics are highly valuable.
Technical Properties of Silver Nanoparticles
| Property | Value |
|---|---|
| True Density (g/cm³) | 10.6 |
| Color | black |
| Shape | spherical |
| Crystal Structure | cubic |
| Atomic Weight | 107.87 |
| Tmelting (°C) | 961.9 |
| Tboiling (°C) | 2212 |
| Average Particle Size (nm) | 28–48 |
| Specific Surface Area (m²/g) | 15.0–18.0 |
Elemental Analysis
| Ag | Cu | Fe | Bi, Pb, Sb |
|---|---|---|---|
| ≥99.95 | ≤0.010 | ≤0.003 | ≤0.002 |
Applications of Silver Nanoparticles
Silver nanoparticles are well known for their strong antimicrobial performance. They can be used as antibacterial and disinfectant agents and, in some cases, are utilized in pharmaceutical applications. Adding very small amounts of silver nanopowder (~0.1%) to inorganic matrices enables effective elimination of pathogenic microorganisms such as Escherichia coli and Staphylococcus aureus. Their disinfectant properties remain stable under various pH and oxidation conditions, ensuring long-term durability.
Silver nanoparticles also serve as efficient chemical catalysts, enhancing the rate and performance of reactions such as ethylene oxidation. They are widely used in biological and diagnostic research, including gene-related studies.
Beyond medical and scientific applications, silver nanoparticles are incorporated into household products such as washing machines, refrigerators, air conditioners, toys, clothing, food containers, and detergents. They are also added to construction materials and coatings to provide antibacterial and corrosion-resistant properties.
