Silver Nanopowder Manufacturer and Supplier
Silver Nanopowder
Main Highlights
- Density (g/cm3) – 10.6
- Color – Black
- Shape – Spherical
- Crystal Structure – Cubic
- Atomic Weight – 107.87
- Melting Point – 961.9 oC
- Boiling Point – 2212 oC
- Particle Size – 18 mm
- Surface Area – 17 m2/g
- Elemental Analysis Ag, Cu Fe Bi, Pb, Sb – ≥99.95, ≤0.010, ≤0.003, ≤0.002
Description and Specifications
What is Silver Nanopowder?
Silver nanopowder (AgNPs) is a fine particle of silver, also known as silver nanoparticles. Its size varies from 1nm to 100 nm. The nanoparticles (Np) have a large percentage of silver oxide. Adding metal oxide, silicate, and polymers improves the bio-sensing of Silver NPs. Silver nanoparticles come in various shapes, such as spherical and diamond. It is commonly used in bio-sensing. It has high conductivity, powerful signal capacity. It is utilized in space industries.
Silver NP is antimicrobial and effective against fungi, viruses, and algae. Its nature kills. It disrupts the cell membrane and stops the bacteria from growing again. The synthesis of AgNPs is entirely eco-friendly, cost-effective, and non-toxic. Metallic silver usually is not active. But when it contacts a reducing agent, it becomes active and is used in many fields.
When a silver nanoparticle is exposed to a specific light, the electromagnetic field sticks to electrons. This forms a charge separation, creating a dipole movement. This oscillation is maximum at a typical frequency. The shape of silver nanoparticles can be changed to control how it absorbs light. The smaller nanoparticles absorb light. The larger one’s exhibit scattering and move toward longer wavelengths. It has properties that help prevent bacteria growth. It is important in dental, surgical, wound, and burn treatments. Normally, silver-based compounds are highly toxic to microorganisms. Adding it to cells creates reactions that kill harmful bacteria.
Synthesis of Silver Nanoparticles
Silver NPs have various synthesis methods. The chemical method is preferred. Silver is broken down to nanosize colloidal silver in an aqueous liquid. The small silver particles is not stable. We need a stabilizing agent, Dodecanethiol, to make the reaction stable. It gets absorbed on the surface and forms a protective sheath. During the synthesizing of the AgNPs, drastic changes in shapes and sizes occur.
Features of Silver Nanoparticles
- Small Size: The small size of this material allows it to mix seamlessly with other composites.
- Non-toxic: The green synthesis approach includes mixed-valence polyoxometalates, Tollens, and biological and eradication methods, making the nanoparticles non-toxic.
- High surface area-to-volume ratio: A high surface area-to-volume ratio means there’s a huge surface area. This big surface area can hold lots of ligands, which are molecules binding to a central metal.
- Absorption ability: The silver nanoparticles absorb well into the cell membrane. This causes changes and leads to the death of bacterial cells.
- Electrical conductivity: Silver is high in electric charge conductivity.
- Antimicrobial properties: Silver nanoparticles have antimicrobial properties because they release silver ions. This is considered a revolutionary way to kill microbes.
Technical Specification
| Product Name | Silver Nanopowder |
| Alternative Name | Silver Nanoparticles / Ag Nanopowder / AgNPs |
| Material | Nanoscale Silver |
| Chemical Symbol | Ag |
| Material Type | Metallic Nanopowder |
| Silver Purity | ≥99.95% |
| Particle Size Range | 1–100 nm |
| Particle Morphology | Spherical |
| Physical Form | Fine Nanopowder |
| Color | Black |
| Crystal Structure | Cubic |
| Atomic Weight | 107.87 g/mol |
| Density | 10.6 g/cm³ |
| Melting Point | 961.9°C |
| Boiling Point | 2212°C |
| Specific Surface Area | Approximately 17 m²/g |
| Surface-to-Volume Ratio | High |
| Electrical Conductivity | Excellent |
| Thermal Conductivity | Excellent |
| Optical Properties | Strong Surface Plasmon Resonance (SPR) |
| Antimicrobial Properties | Excellent |
| Antibacterial Activity | Excellent |
| Antifungal Activity | Excellent |
| Catalytic Activity | Excellent |
| Chemical Stability | High |
| Biosensing Capability | Excellent |
| Surface Functionalization | Compatible with Suitable Organic, Polymer and Functional Coatings |
| Recommended Conductive Ink / Paste Loading | Approximately 20–70 wt.% Depending on Formulation |
| Compatible Dispersion Media | Deionized Water, Ethanol, Isopropyl Alcohol, Polymer Matrix, Resin and Suitable Coating Solutions |
| Recommended Mixing Time | 15–30 Minutes |
| Recommended Sonication Time | 10–20 Minutes |
| Typical Applications | Conductive Inks, Printed Electronics, Biosensors, Antimicrobial Coatings, Catalysts, Surface-Enhanced Raman Scattering, Metal-Enhanced Fluorescence and Nanotechnology Research |
| Recommended Storage Temperature | 15–25°C |
| Storage Conditions | Store in a Tightly Sealed Container in a Cool, Dry and Well-Ventilated Area Away from Direct Sunlight and Humidity |
| Handling | Minimize Dust Generation and Use Appropriate Laboratory PPE and Ventilation |
Silver Nanopowder vs Copper, Zinc Oxide & Titanium Dioxide Nanoparticles
Silver Nanopowder offers superior electrical conductivity, antimicrobial performance, and plasmonic properties compared to copper, zinc oxide, and titanium dioxide nanoparticles. It is widely used in conductive inks, biosensors, antimicrobial coatings, and advanced nanotechnology research where high conductivity and surface activity are critical.
| Parameter | Silver Nanopowder | Copper Nanopowder | Zinc Oxide Nanoparticles | Titanium Dioxide Nanoparticles |
|---|---|---|---|---|
| Chemical Formula | Ag | Cu | ZnO | TiO₂ |
| Appearance | Black Powder | Reddish Brown Powder | White Powder | White Powder |
| Particle Morphology | Spherical | Spherical | Near Spherical | Spherical |
| Particle Size Range | 1–100 nm | 20–100 nm | 20–100 nm | 20–100 nm |
| Purity | ≥ 99.95% | ≥ 99% | ≥ 99% | ≥ 99% |
| Electrical Conductivity | Excellent | Very High | Low | Low |
| Thermal Conductivity | Excellent | Excellent | Moderate | Moderate |
| Surface Area | ~17 m²/g | 10–15 m²/g | 20–50 m²/g | 30–70 m²/g |
| Antimicrobial Properties | Excellent | Moderate | Good | Limited |
| Optical Properties | Plasmonic Response | Conductive Metallic | UV Blocking | Photocatalytic |
| Chemical Stability | High | Prone to Oxidation | High | Very High |
| Typical Applications | Biosensors, Conductive Inks, Antimicrobial Coatings, Catalysts | Conductive Pastes, Electronics, EMI Shielding | Sunscreens, Sensors, Antibacterial Coatings | Photocatalysis, Solar Cells, Self-Cleaning Coatings |
| Cost | Premium | Moderate | Economical | Economical |
Why Choose Silver Nanopowder?
Silver Nanopowder (AgNPs) combines exceptional electrical conductivity, nanoscale surface area, antimicrobial activity and unique plasmonic properties. These characteristics make it particularly suitable for conductive inks, printed electronics, biosensors, antimicrobial coatings, catalysts, optical sensing and advanced nanotechnology research.
- High Purity:
Silver content of ≥99.95% makes the nanopowder suitable for demanding electronic, sensing and research applications. - Nanoscale Particle Size:
A particle size range of 1–100 nm provides a high surface-to-volume ratio and enhanced surface activity compared with bulk silver. - Excellent Electrical Conductivity:
Silver offers outstanding conductivity, making the nanopowder an excellent choice for conductive inks, pastes, electrodes and printed electronic circuits. - Excellent Thermal Conductivity:
Suitable for electrically and thermally conductive composites, pastes and advanced electronic materials. - Strong Antimicrobial Performance:
Silver nanoparticles exhibit strong antibacterial, antifungal and antimicrobial activity, supporting functional coatings and advanced material research. - Unique Plasmonic Properties:
Silver nanoparticles exhibit surface plasmon resonance, making them highly useful for optical sensing, SERS and advanced analytical applications. - Excellent for Biosensors:
The combination of conductivity, surface activity and optical response makes AgNPs particularly useful in biological and chemical sensing platforms. - High Catalytic Activity:
The nanoscale surface provides numerous active sites for catalytic and chemical-reaction applications. - Ideal for Conductive Inks & Pastes:
Silver nanopowder can be incorporated at approximately 20–70 wt.% depending on the required conductivity and formulation. - Good Dispersion Flexibility:
Can be formulated with deionized water, ethanol, isopropyl alcohol, polymer matrices, resins and suitable coating solutions. - Better Oxidation Stability Than Copper:
Silver offers greater chemical stability than copper nanopowder, which is advantageous for reliable conductive formulations and long-term electronic performance. - Wide Application Range:
Suitable for printed electronics, flexible electronics, biosensors, conductive coatings, antimicrobial materials, catalysts, SERS, fluorescence enhancement and nanotechnology research.
Directions for Use
- Determine the intended application, as the required concentration and processing method depend on the end use.
- A concentration of 20–70 wt% is recommended for conductive inks and pastes.
- To ensure consistency, weigh the required amount of silver nanopowder using a precision balance.
- Prepare the nanoparticle suspension under controlled conditions.
- Mix the nanopowder with deionized water, ethanol, isopropyl alcohol, a coating solution, polymer matrix, or resin to improve its conductivity and antimicrobial properties.
- Stir the mixture for 15–30 minutes to ensure uniform mixing.
- Sonicate for 10–20 minutes to break up particle agglomerates and obtain a stable suspension.
- If particles clump together, stir gently or use ultrasonication to redisperse them.
- Do not crush or grind dry clumps.
- Ensure the silver nanoparticles are uniformly distributed throughout the mixture before further processing.
- Apply the nanoparticle dispersion to the substrate or incorporate it into the required formulation, sensing system, or analytical process.
Handling & Storage Guidelines
- Handle the nanopowder carefully to minimize dust generation.
- Store in a well-ventilated area, avoiding exposure to direct sunlight and humid conditions.
- Recommended storage temperature: 15–25 °C.
- Ensure the container is tightly closed after each use.
- Use the product within the recommended shelf life.
- Collect unused material in a sealed container.
- Dispose of unused material according to laboratory disposal procedures or local hazardous waste regulations.
Application of Silver Nanopowder
The peptides colours and effects on silver nanopowder can be sensed. The peptides also impact the formation of silver nanoparticles. The efficiency of nanopowder-based sensors can be very high.
It is widely used as a probe for surface-enhanced scattering and metal-enhanced fluorescence. It is also used similarly.
It is used with titanium dioxide to prevent coalescence in chemical reactions. Furthermore, it serves as the catalyst.
Why Choose Us?
Techinstro specializes in cutting-edge nanomaterials. We are a top silver nanopowder manufacturer and supplier. We proudly produce high-quality silver nanopowder at an affordable price, and our clients can choose what suits their needs.
We prioritize efficient nanomaterial production to meet quick delivery timelines. Leading companies trust us for exceptional quality silver nanopowder customized to their needs. They rely on us for tailored solutions.
As an innovative nanomaterial manufacturer, we care about both quality and cost. We supply premium but budget-friendly in all requested variants. Techinstro is the leading AgNPs solution provider. We offer efficient production and rapid deliveries to major industries.
FAQ's
The particle size is 1-100 nm (nanoscale).
The purity is ≥ 99.95%.
The density is 10.6 g/cm³.
The color is black, and it is a spherical powder.
The specific surface area is 17 m²/g.
The melting point is 961.9 °C.
Major applications include SERS probes, conductive inks, electronics, catalysis, and metal-enhanced fluorescence.
Key properties include excellent electrical and thermal conductivity, a high surface area, and a plasmonic optical response.
Store cool, dry, and sealed away from moisture; handle as a fine nanopowder with PPE.