Iron Oxide Nanoparticles
Iron Oxide Nanoparticles
Highlights
- Chemical Formula Fe₃O₄ / γ-Fe₂O₃ / α-Fe₂O₃
- Purity 99.9%
- Particle Size 1 to 100 nm
- Morphology Spherical
- Specific Surface Area 40 to 60 m²/g
- Bulk Density 0.5 to 1.2 g/cm³
- Color Black (Fe₃O₄) / Reddish brown (α-Fe₂O₃) / Maghemite Brown (γ-Fe₂O₃)
- Melting Point approx 1590°C
- Solubility Water or Organic Solvent dispersible versions
- pH Stability Range 4 to 9
- Shelf Life 12 to 24 months from date of manufacture
- Packaging Available in 5 g, 25 g, 100 g, 500 g, and bulk on request
- Iron Oxide Nanoparticles is stable in the air and also in the water.
- Melting point is around 2055 °C.
- The composition of IONSP is magnetic (Fe3O), or it also has maghemite (y-Fe2O3).
- The surface area is between 100 and 1000 square meters per gram.
- It is usually spherical, cubic, or hexagonal.
- Non-toxic to living cells.
- Superparamagnetic properties.
- Its bulk density is between 0.5 and 1.0 grams per cubic centimeter.
- The size of Iron Oxide Nanoparticles is between 1 and 100 nanoparticles.
Description and Specification of Iron Oxide Nanoparticles
Iron oxide nanoparticles are very small crystalline particles mainly found as magnetite (Fe₃O₄), maghemite (γ-Fe₂O₃), and hematite (α-Fe₂O₃). Their particle size is usually between 1 and 100 nanometers. Because of their nano size, they have a large surface area relative to their volume. As a result, they can bind well with other substances and remain well dispersed when mixed with liquids. One important property of these particles, particularly those measuring 2–20 nanometers, is superparamagnetism. They do not retain magnetization after the external magnetic field is removed. But they respond quickly when a magnetic field is applied. This makes it possible to separate and move the particles using a magnetic field while reducing the risk of permanent aggregation in the solution.
Modern synthesis methods, including thermal decomposition of iron carboxylate salts, help control particle size, shape, and crystal structure. A suitable coating can make the particles water-compatible and more suitable for biological applications. The coating also helps maintain particle stability across different pH conditions and temperatures. These coated particles can then be linked with biomolecules, or other functional compounds.
Due to their tunable surface chemistry, iron oxide nanoparticles can be functionalized with antibodies, enzymes, proteins, polymers, and other molecules. This flexibility enables their use in environmental work, agriculture, and industry, including including magnetic separation and material sensing.
Technical Specification
| Technical Specifications of Iron Oxide Nanoparticles | |
|---|---|
| Product Name | Iron Oxide Nanoparticles |
| Product Series | Fe2O3-NANO |
| Material | Iron Oxide Nanopowder |
| Molecular Formula | Fe₂O₃ |
| CAS Number | 1309-37-1 |
| Purity | 99.9% |
| Physical Form | Powder |
| Color | Red |
| Morphology | Spherical |
| Average Particle Size | 30–60 nm |
| Specific Surface Area (SSA) | 80–100 m²/g |
| Bulk Density | 0.69 g/cm³ |
| Molecular Weight | 159.69 g/mol |
| Melting Point | 1565°C |
| Elemental Composition | Iron (Fe) and Oxygen (O) |
| EDX Composition | Fe: 71.04 wt.% | O: 28.96 wt.% |
| Surface-to-Volume Ratio | High |
| Magnetic Behavior | Magnetic Properties Depend on Particle Size and Iron Oxide Phase |
| Water Solubility | Insoluble; Can Be Dispersed with Suitable Dispersion Techniques |
| Surface Functionalization | Suitable for Surface Coating and Functionalization |
| Typical Applications | Catalysis, Sensors, Magnetic Materials, Environmental Remediation, Pigments, Biomedical Research, Drug Delivery, Imaging, Electronics and Nanotechnology Research |
| Storage Conditions | Store in a Cool, Dry and Sealed Environment with Moisture-Proof Packaging |
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Features of Iron Oxide Nanoparticles
- Consistent particle size with a tight size range.
- Large surface area that supports strong binding.
- Superparamagnetic behavior that allows controlled response to magnets.
- Stable, low-reactivity surface suitable for research use.
- Offered in both water or organic solvent dispersible versions.
- Holds up well across different pH and temperature conditions.
- The surface coating can be adjusted to fit specific applications.
- Can be separated from a solution with an external magnet.
- Stable crystal structure across different batches.
Iron Oxide Nanoparticles Comparison
| Parameter | Iron Oxide Nanoparticles (Fe₂O₃) | Magnetite Nanoparticles (Fe₃O₄) | Zinc Oxide Nanoparticles (ZnO) | Titanium Dioxide Nanoparticles (TiO₂) | Copper Oxide Nanoparticles (CuO) |
|---|---|---|---|---|---|
| Chemical Formula | Fe₂O₃ | Fe₃O₄ | ZnO | TiO₂ | CuO |
| Material Type | Iron Oxide | Magnetic Iron Oxide | Metal Oxide Semiconductor | Metal Oxide Semiconductor | Metal Oxide Semiconductor |
| Appearance | Red Powder | Dark Brown / Black Powder | White Powder | White Powder | Brownish-Black Powder |
| Particle Size | 30–60 nm | 1–100 nm | <100 nm | <100 nm | 1–100 nm |
| Purity | 99.9% | 99.9% | High Purity | High Purity | High Purity |
| Molecular Weight | 159.69 g/mol | 231.53 g/mol | 81.40 g/mol | 79.94 g/mol | 79.55 g/mol |
| Density | Bulk Density: 0.69 g/cm³ | ~5.0 g/cm³ | ~5.6 g/cm³ | 4.23 g/cm³ | 6.31 g/cm³ |
| Melting Point | 1565°C | 597°C | 1975°C | 1843°C | 1201°C |
| Specific Surface Area | 80–100 m²/g | High | High | High | High |
| Magnetic Properties | Phase and Size Dependent | Excellent / Superparamagnetic at Suitable Nanoscales | Non-Magnetic | Non-Magnetic | Weak Magnetic Behavior |
| Electrical Behavior | Semiconducting | Semiconducting | Wide-Bandgap Semiconductor | Semiconductor | p-Type Semiconductor |
| Photocatalytic Activity | Good | Moderate | Excellent | Excellent | Good |
| Catalytic Applications | Excellent | Excellent | Excellent | Excellent | Excellent |
| Environmental Remediation | Excellent | Excellent | Good | Excellent | Good |
| Magnetic Separation | Application Dependent | Excellent | Not Suitable | Not Suitable | Limited |
| Sensor Applications | Excellent | Excellent | Excellent | Excellent | Excellent |
| Biomedical Research | Very Good | Excellent | Application Specific | Application Specific | Application Specific |
| Antimicrobial Applications | Good | Good | Excellent | Good | Excellent |
| Pigment Applications | Excellent | Good | Excellent White Pigment | Excellent White Pigment | Good |
| Typical Applications | Catalysts, Sensors, Pigments, Environmental Remediation, Magnetic Materials, Biomedical Research | MRI Research, Magnetic Separation, Drug Delivery, Hyperthermia, Sensors, Water Treatment | UV Protection, Sensors, Antimicrobial Coatings, Electronics, Photocatalysis | Photocatalysis, Solar Cells, UV Protection, Coatings, Water Treatment | Sensors, Catalysts, Conductive Materials, Antimicrobial Coatings, Electronics |
| Best Choice For | General Iron Oxide Research, Catalysis, Pigments & Environmental Applications | Applications Requiring Strong Magnetic Response | UV, Antimicrobial & Semiconductor Applications | Photocatalysis & UV-Driven Applications | Electronics, Sensors & Antimicrobial Applications |
| Key Advantage | High Purity, High Surface Area & Versatile Surface Chemistry | Superior Magnetic Performance | Excellent UV Absorption & Antimicrobial Activity | Excellent Photocatalytic & Chemical Stability | Strong Catalytic, Electrical & Antimicrobial Performance |
Why Choose Iron Oxide Nanoparticles?
- High purity of 99.9% for research and advanced material applications
- Controlled average particle size of 30–60 nm
- High specific surface area of 80–100 m²/g
- Spherical nanoparticle morphology
- Suitable for catalytic and sensor applications
- Useful for environmental remediation and pollutant removal research
- Compatible with surface coating and chemical functionalization
- Suitable for magnetic, biomedical and nanotechnology research
Applications of Iron Oxide Nanoparticles
Iron oxide nanoparticles are used in industrial and environmental applications because of their magnetic properties and modifiable surfaces.
In research settings, iron oxide nanoparticles support targeted delivery studies, bio-analysis, and magnetic separation, where their surfaces are linked to functional molecules and guided using a magnetic field.
These particles are also used to clean up contaminated water and soil, and they play a role in catalysis, sensor design, and biological molecule detection.
Their magnetic separability further supports food safety testing, improves agricultural products, and supports the development of materials used across electronics, construction, and energy industries.
How to use Iron Oxide Nanoparticles?
- Keep the product stored in its original packaging.
- Use a clean, dry spatula or pipette to take out the amount needed.
- Mix a fresh working solution right before each use for the best outcome.
- When preparing a dispersion, stir the chosen solvent first and then slowly mix in the nanoparticles.
- If needed for a particular use, adjust the pH of the dispersion medium.
- Ultrasonicate for 10 to 30 minutes to spread the particles evenly and prevent clumping.
- Use magnetic separation equipment to pull particles from the solution.
- Close the container firmly right after use.
- Refer to the technical datasheet for guidance.
Why choose us?
We test our Iron Oxide Nanoparticles for purity, particle size, and magnetic properties to maintain consistent quality across batches. They suit research, and industrial applications, with good dispersion, reliable surface properties, and consistent performance.
Backed by years of nanomaterial production experience, we pair technical know-how with a genuine focus on quality and customer care. From large-volume orders to custom particle requirements, our team works closely with researchers to meet their actual needs. Choose us as a trusted manufacturer and supplier, and reach out today to get the order started. For price and bulk quotation contact our team.
FAQ's
Tiny crystalline particles of magnetite (Fe₃O₄), maghemite (γ-Fe₂O₃), or hematite (α-Fe₂O₃), sized 1 to 100 nm, with a large surface area that supports strong binding.
Particles about 2–20 nm in size magnetize under a field but lose their magnetization once the field is removed, so that they can be separated with a magnet and resist clumping.
They are used in laboratory research for targeted delivery studies, magnetic separation, bio-analysis, and material sensing, thanks to their magnetic response and tunable surface.
Water and soil cleanup, catalysis, sensors, agriculture, and materials for the electronics, construction, and energy industries.
Techinstro supplies them at 99.9% purity, sized 1 to 100 nm, with spherical morphology. Custom sizes and coatings on request.
Specific surface area is 40 to 60 m²/g; bulk density is 0.5 to 1.2 g/cm³.
No — they are water-dispersible. Both water- and organic-solvent-dispersible versions are offered.
Handle the dry powder with gloves, goggles, a lab coat, and a dust mask in a ventilated area, and follow the SDS.
Keep it sealed, away from sunlight and moisture; shelf life is 12 to 24 months from manufacture.
Stir the solvent, add particles slowly, adjust pH if needed, then ultrasonicate for 10 to 30 minutes.