Fe₂O₃ Iron Oxide Nanopowder Water Dispersion (Gamma, 99.9%, 10 nm, 15 wt%) is a water-based suspension of high-purity iron oxide (Fe₂O₃) nanoparticles in the gamma-phase (γ-Fe₂O₃), with a particle size of 10 nm and a concentration of 15% by weight. Here’s a detailed breakdown of the material:
1. Composition:
- Iron Oxide (Fe₂O₃):
- Iron oxide (Fe₂O₃) is a compound of iron and oxygen. It is widely used in various applications due to its magnetic properties, chemical stability, and catalytic behavior. In this case, it is the gamma-phase (γ-Fe₂O₃) of iron oxide, also known as magnetite, which is a metastable phase that can be converted to the alpha-phase.
- Gamma-Phase (γ-Fe₂O₃):
- The gamma-phase (γ-Fe₂O₃), also called maghemite, is a metastable form of iron oxide that is often used in magnetic applications. It has distinct magnetic properties compared to the alpha-phase, making it suitable for applications that require high magnetic susceptibility.
- Purity (99.9%):
- The 99.9% purity indicates that the nanopowder is highly pure, with minimal impurities, ensuring consistent performance in sensitive applications such as catalysis, magnetic storage, and sensors.
- Particle Size (10 nm):
- The 10 nm particle size gives these nanoparticles a high surface area and significant reactivity, making them ideal for applications in catalysis, sensors, and other processes requiring large surface interactions. The small size also allows for greater dispersion and increased reactivity.
- Concentration (15 wt%):
- The dispersion contains 15% by weight of iron oxide nanoparticles suspended in water. This is a moderate concentration, making the dispersion suitable for a variety of industrial and research applications.
2. Key Properties:
- High Surface Area:
- The 10 nm particle size provides a high surface area, which increases the reactivity of the nanoparticles. This is beneficial for applications in catalysis and sensors, where surface interactions are crucial.
- Magnetic Properties:
- Gamma-Fe₂O₃ (maghemite) has strong magnetic properties, with a high magnetic susceptibility. This makes it useful in applications like magnetic storage, magnetic sensors, and ferrofluids.
- Chemical and Thermal Stability:
- Gamma-Fe₂O₃ has good chemical stability and can perform in various industrial environments. It is also relatively stable at moderate temperatures but can undergo a phase transition to alpha-Fe₂O₃ under certain conditions.
- Water-Based Dispersion:
- The suspension is water-based, meaning it is safer and more environmentally friendly than solvent-based dispersions. It is easier to handle and integrate into aqueous-based processes.
3. Applications:
- Catalysis:
- The high surface area of the 10 nm gamma-phase nanoparticles makes them suitable for catalytic applications. Gamma-Fe₂O₃ nanoparticles can act as effective catalysts or catalyst supports in oxidation and other chemical reactions.
- Magnetic Materials:
- The magnetic properties of gamma-Fe₂O₃ make it useful in the production of magnetic storage materials, magnetic sensors, and ferrofluids. Its high magnetic susceptibility makes it effective in data storage and magnetic field sensing applications.
- Sensors:
- Iron oxide nanoparticles, particularly in the gamma-phase, are used in various types of sensors, such as gas sensors, biosensors, and environmental sensors. The high reactivity and magnetic properties make them suitable for use in sensing applications.
- Environmental Remediation:
- Iron oxide nanoparticles are used for environmental applications, such as the removal of heavy metals from water and the cleanup of oil spills. The 10 nm size enhances the surface area for adsorption and reactivity.
- Pigments and Coatings:
- Gamma-Fe₂O₃ nanoparticles are used in some types of pigments and coatings, especially in applications requiring a stable magnetic component or a specific color.
- Energy Storage:
- Due to their conductive and magnetic properties, gamma-Fe₂O₃ nanoparticles are being studied for energy storage devices such as supercapacitors and batteries, where they can enhance performance.
- Biomedical Applications:
- The magnetic properties of gamma-Fe₂O₃ make it suitable for use in biomedical applications like magnetic resonance imaging (MRI), targeted drug delivery, and magnetic hyperthermia for cancer treatment.
4. Advantages:
- High Purity:
- The 99.9% purity ensures that the material has minimal contamination, providing consistent performance across a wide range of sensitive applications.
- High Surface Area (10 nm):
- The 10 nm particle size offers a large surface area, increasing the reactivity of the nanoparticles. This makes them ideal for use in catalysts, sensors, and other applications that require surface interaction.
- Magnetic Properties:
- The magnetic properties of gamma-Fe₂O₃ are advantageous in applications like magnetic data storage, magnetic sensors, and magnetic separation techniques.
- Water-Based Dispersion:
- The water-based dispersion makes it safer and easier to handle than solvent-based alternatives, and it is more environmentally friendly. It is also easy to integrate into water-based industrial processes.
5. Handling and Storage:
- Handling:
- Shake or stir the dispersion well before use to ensure uniform distribution of the nanoparticles. Use appropriate personal protective equipment (PPE), such as gloves and goggles, to avoid contact with the dispersion.
- Storage:
- Store the dispersion in a cool, dry place, away from direct sunlight and high temperatures to prevent the nanoparticles from degrading. Ensure the container is sealed to prevent the water from evaporating and causing changes in concentration.
- Safety:
- While iron oxide is relatively safe, nanoparticles should be handled with care to avoid inhalation or eye contact. Always work with nanoparticles in a well-ventilated area and use proper PPE.
Summary:
Fe₂O₃ Iron Oxide Nanopowder Water Dispersion (Gamma, 99.9%, 10 nm, 15 wt%) is a high-purity, water-based suspension of gamma-phase iron oxide (Fe₂O₃) nanoparticles with a particle size of 10 nm and a 15% by weight concentration. This material exhibits high surface area, magnetic properties, and chemical stability. It is used in a variety of applications, including catalysis, magnetic materials, sensors, environmental remediation, pigments and coatings, energy storage, and biomedical applications. The water-based nature of the dispersion makes it easier to handle and environmentally friendly, while its high reactivity and magnetic properties enhance its effectiveness in a wide range of industrial, environmental, and technological applications.
