Technical Specifications:
- Material: Silver Nanopowder (Ag)
- Purity: 99.99% or higher
- Particle Size: 30-50 nm (nanometers)
- Surface Coating: Approximately 0.2 wt% Polyvinylpyrrolidone (PVP)
- Shape: Spherical or nearly spherical nanoparticles
- Density: Approximately 10.49 g/cm³
- Melting Point: Approximately 961.8°C (1,763°F)
- Boiling Point: 2,162°C (3,924°F)
Chemical Composition:
- Silver (Ag): ~99.99%
- Polyvinylpyrrolidone (PVP): ~0.2 wt% (surface stabilizer)
Applications:
1. Electronics and Conductive Inks:
- Silver nanopowder is widely used in the manufacture of conductive inks for printed electronics, printed circuit boards (PCBs), and flexible electronics. The particle size of 30-50 nm ensures fine resolution and high conductivity for high-frequency applications, RFID tags, and sensors.
- The PVP coating ensures that the nanoparticles remain stable and well-dispersed in inks, preventing aggregation and ensuring consistent electrical properties.
2. Catalysis:
- Silver nanoparticles have significant catalytic properties in oxidation, reduction, and hydrogenation reactions. Due to their high surface area, they are used as catalysts or catalyst supports in chemical reactions.
- The PVP coating enhances the nanoparticles’ stability, making them ideal for industrial catalysis applications, such as in the production of fine chemicals, pharmaceuticals, and petrochemicals.
3. Antimicrobial and Antibacterial Applications:
- Silver nanoparticles are well-known for their antimicrobial properties. The PVP coating helps prevent aggregation and enhances the nanoparticles’ interaction with bacteria, fungi, and viruses, making them effective in medical devices, wound dressings, personal care products, and water purification systems.
- The PVP-coated silver nanoparticles are used in antimicrobial coatings for surfaces, textiles, and medical equipment.
4. Sensors and Diagnostics:
- Silver nanoparticles are employed in biosensors and chemical sensors due to their high reactivity and sensitivity to various biological markers and chemicals. The PVP coating provides stabilization and prevents agglomeration of nanoparticles, maintaining consistent sensor performance.
- Silver nanopowder is used in biosensing applications, including the detection of DNA, proteins, toxins, and pathogens, and is also applied in diagnostic kits.
5. Energy Storage and Conversion:
- Silver nanopowder is used in the development of supercapacitors, batteries, and fuel cells. The fine size and high surface area improve charge storage capacity and energy efficiency in energy storage devices.
- It is incorporated into electrodes and electrochemical applications, such as supercapacitors and solar cells, for enhanced performance and rechargeability.
6. Optical and Plasmonic Applications:
- Silver nanoparticles exhibit unique plasmonic properties, which make them useful in optical applications like surface-enhanced Raman spectroscopy (SERS) and nano-optics.
- The PVP coating stabilizes the nanoparticles and enables their use in optical sensors, imaging, and biosensing applications where enhanced light-matter interactions are essential.
7. Photothermal Therapy:
- Silver nanoparticles are investigated for their photothermal properties, making them potential candidates for cancer treatment through hyperthermic therapy. When exposed to light, silver nanoparticles absorb energy and convert it into heat, targeting tumor cells for destruction without damaging surrounding healthy tissues.
- The PVP coating ensures better dispersion in biological media, improving the efficacy of photothermal treatments.
8. Coatings and Functionalized Materials:
- Silver nanoparticles are used to create functional coatings for electronics, sensors, textiles, and surfaces due to their electrical conductivity, antimicrobial properties, and optical enhancement. The PVP coating ensures that the nanoparticles do not agglomerate and remain uniformly dispersed, enhancing the coating’s properties.
- These coatings are used in electromagnetic shielding, antibacterial surfaces, and sensitive coatings for sensors and electronics.
9. Textiles and Fabrics:
- Silver nanopowder is incorporated into fabrics to provide antibacterial properties and odor control. The fine size of the nanoparticles allows them to bond effectively to fabrics, providing long-lasting antimicrobial protection.
- Applications include medical clothing, sportswear, masks, and bedding where bacterial resistance is crucial.
10. Research and Development:
- Silver nanoparticles are widely used in materials science, nanotechnology, biotechnology, and chemistry research. The ability to functionalize silver nanoparticles with surface coatings like PVP opens up new opportunities for drug delivery systems, nanocomposites, and novel materials.
- Researchers use silver nanopowder in the development of nanomaterials, biological assays, and advanced technologies in fields such as electronics, pharmaceuticals, and environmental science.
Summary:
Silver Nanopowder (Ag, 99.99%, 30-50 nm, w/~0.2 wt% PVP Coated) is a versatile and high-performance material known for its excellent electrical conductivity, catalytic properties, antibacterial effects, and plasmonic characteristics. The PVP coating helps stabilize the nanoparticles, preventing aggregation and ensuring consistent performance in a wide range of applications including electronics, catalysis, medical devices, energy storage, biosensing, and optical applications. Its small particle size (30-50 nm) and high surface area make it ideal for advanced nanotechnology and biomedical applications, while its purity ensures optimal efficiency and performance.
