Silicon Oxide Nanopowder (SiO2, 98+%, 60-70 nm)

Silicon oxide nanopowder (SiO2, 98+%, 60-70 nm) is a refined form of silica with a particle size in the range of 60-70 nanometers. It exhibits a unique combination of properties that make it suitable for a variety of applications, including materials science, electronics, and environmental technologies. Its relatively larger particle size compared to finer silica powders offers advantages in certain industrial processes where structural stability and mechanical properties are important.

Composition and Structure

SiO2 (Silicon Oxide):
Silicon oxide, also known as silica, is a chemical compound composed of silicon and oxygen. It is one of the most widely used materials due to its high durability, optical clarity, and electrical insulating properties. Silica occurs naturally in minerals like quartz and is also synthetically produced for use in various high-tech applications.
Purity (98+%):
With a purity of 98+%, this nanopowder contains only trace impurities, which ensures high performance in applications requiring minimal contamination. The high purity level is important for maintaining the desired properties of the material in sensitive processes such as semiconductor manufacturing or coatings.
Particle Size (60-70 nm):
The particle size of 60-70 nm strikes a balance between surface area and mechanical strength. This size range enhances the material’s stability while still offering increased surface reactivity, making it suitable for applications requiring more robust materials with better structural integrity compared to smaller nanopowders.

Properties

1. Moderate Surface Area:
   While the surface area of SiO2 nanopowder with a 60-70 nm size is lower compared to finer powders, it still retains sufficient surface area for chemical reactions and adsorption applications. This property is especially valuable in catalyst support materials or composite fabrication.
2. Chemical Inertness:
   SiO2 is chemically inert, resistant to acids, bases, and other corrosive agents. This stability makes it ideal for use in harsh environments, including industrial processing and electronic devices.
3. Optical Transparency:
   Like other forms of silicon oxide, SiO2 is transparent to visible light. This property is beneficial for use in optical coatings, lenses, and glass manufacturing, where high clarity and light transmission are crucial.
4. Thermal Stability:
   SiO2 has excellent thermal stability, withstanding high temperatures without degradation. This makes it suitable for high-temperature applications such as coatings, ceramics, and other materials exposed to extreme conditions.
5. Electrical Insulation:
   SiO2 is an excellent electrical insulator, a property that is critical for its use in electronic applications, where it prevents the conduction of electrical currents and protects sensitive components.

Applications

1. Electronics and Semiconductors:
Insulating Material:
SiO2 is widely used as an insulating material in semiconductor devices, particularly as a dielectric layer in transistors, capacitors, and integrated circuits. Its excellent electrical insulating properties help in maintaining the functionality and performance of microelectronic devices.
Semiconductor Fabrication:
Silicon oxide nanopowder is used in the fabrication of thin films for semiconductor devices. These thin films are essential for controlling the flow of electricity in devices and are integral to the functioning of modern electronic components.

2. Materials Science and Nanocomposites:
Reinforcement in Composites:
SiO2 nanopowder is used in nanocomposites to improve the mechanical properties of base materials. When combined with polymers, metals, or ceramics, it enhances the strength, toughness, and thermal stability of the composite material, making it useful in aerospace, automotive, and construction industries.
Ceramics and Coatings:
The nanopowder is often incorporated into ceramic materials to improve their strength and durability. It is also used as a coating material for industrial parts, where it can increase resistance to wear, corrosion, and heat.

3. Optics and Photonics:
Optical Coatings:
SiO2 is commonly used in the production of thin films and coatings for optical devices. Its high transparency and stability make it an ideal material for lenses, optical fibers, mirrors, and other optical components. It is often used in anti-reflective coatings and as a protective layer in devices requiring high optical clarity.
Photonic Applications:
Silicon oxide is used in the development of photonic devices that manipulate light, including in the fabrication of waveguides, optical sensors, and solar cells. Its properties make it suitable for both visible and infrared optical applications.

4. Environmental Applications:
Water and Air Filtration:
SiO2 nanopowder is used in filtration systems due to its high surface area and adsorption capacity. It helps to remove contaminants such as heavy metals, organic compounds, and particulate matter from water and air.
Pollutant Absorption:
The material is also used in pollution control applications, where it can adsorb toxic gases and particles, helping to reduce air and water pollution in industrial settings.

5. Pharmaceuticals and Biotechnology:
Drug Delivery Systems:
SiO2 nanoparticles are employed in the pharmaceutical industry for drug delivery applications. Due to their high surface area, they can be functionalized to carry and release drugs in a controlled manner. This allows for targeted drug delivery to specific cells or tissues, enhancing the effectiveness of treatments.
Biomedical Implants and Coatings:
Silicon oxide is used in the creation of bioactive coatings for implants and medical devices. These coatings improve the biocompatibility of the devices, allowing them to integrate more effectively with body tissues and reducing the risk of rejection.

Safety and Handling

Health Considerations:
While silicon oxide is generally considered safe, precautions should be taken when handling nanopowders. Inhalation of SiO2 dust can cause respiratory irritation or damage, and prolonged exposure can lead to more severe health issues. Protective equipment such as gloves, masks, and goggles should be used when handling this material.
Environmental Impact:
SiO2 is non-toxic and environmentally benign, making it safe for use in many applications. However, as with any nanoparticle, care should be taken in its disposal to avoid potential environmental contamination, especially in aquatic ecosystems.

Summary

Silicon oxide nanopowder (SiO2, 98+%, 60-70 nm) is a versatile material with applications in electronics, materials science, optics, and environmental technologies. Its chemical stability, thermal resistance, and optical transparency make it a key material in a range of industries, from semiconductor manufacturing to water filtration. With its unique properties at the nanoscale, it is an essential component in the development of advanced materials and technologies.