Description
Silver (Ag) Nanopowder/Nanoparticles
Purity: >99.9+% | Average Particle Size: 20 nm | Crystal Structure: Cubic
Silver (Ag) nanoparticles are widely recognized for their exceptional antimicrobial, catalytic, and biological properties. With a particle size of 20 nm and high purity, these spherical, black-colored nanoparticles offer a wide range of applications across various fields—from medicine to materials engineering, from consumer products to biotechnology.
Technical Properties
Property | Value |
---|---|
Purity (Ag) | >99.9+% (metal basis) |
Color | Black |
Shape | Spherical |
Crystal Structure | Cubic |
Average Particle Size | 20 nm |
Specific Surface Area | 17.0 – 21.0 m²/g |
True Density | 10.6 g/cm³ |
Melting Point | 961.9 °C |
Boiling Point | 2212 °C |
Atomic Weight | 107.87 |
Elemental Analysis
Element | Content (%) |
---|---|
Ag | ≥ 99.9+ |
Cu | ≤ 0.010 |
Fe | ≤ 0.003 |
Bi, Pb, Sb | ≤ 0.002 |
Key Applications
Antimicrobial and Disinfectant Use
Silver nanoparticles are used to inhibit or kill harmful pathogens such as E. coli and S. aureus. They retain their effectiveness across varying pH levels and oxidation conditions. Common uses include pharmaceutical formulations, antibacterial coatings, and personal care products.
Catalysis
In catalytic applications, silver nanoparticles accelerate chemical reactions—particularly in processes like ethylene oxidation—improving overall efficiency.
Biomedical and Genetic Research
Used in diagnostics, biosensors, and nucleic acid research. Their small size and chemical reactivity make them ideal for advanced imaging and targeted delivery applications.
Consumer and Industrial Products
Silver nanoparticles are increasingly integrated into electronics, household appliances (refrigerators, washing machines), textiles, air filtration systems, and paints to provide durable antimicrobial protection.