Nano Alpha Red Iron Oxide Powder Fe2O3 Nanoparticles / Nanopowder
Iron(III) oxide, also named for ferric oxide, is the inorganic compound with the formula Fe2O3.
| Index Model |
Fe2O3.20 |
Fe2O3.50 |
| Particle Size |
10-30nm |
30-60nm |
| Shape |
Spherical |
Spherical |
| Purity(%) |
99.8 |
99.9 |
| Apperance |
Red Powder |
Red Powder |
| BET(m2/g) |
20~60 |
30~70 |
| Bulk Density(g/cm3) |
0.91 |
0.69 |
When the size of the Fe2O3 Iron(III) oxide is small to nanometer(1~100nm), the surface atomic number, specific surface area and surface energy of the iron oxide particles increase sharply with the decrease of the particle size, which shows the features of small size effect, quantum size effect, surface effect and macroscopic quantum tunneling effect. It has good optical properties, magnetic properties and catalytic properties etc, which has wide application in the fields of light absorption, medicine, magnetic media and catalysis.
1. Application of nano-iron oxide in magnetic materials and magnetic recording materials
Nano Fe2O3 has good magnetic properties and good hardness. Oxymagnetic materials mainly include soft magnetic iron oxide (α-Fe2O3) and magnetic recording iron oxide (γ-Fe2O3). Magnetic nanoparticles have the characteristics of single magnetic domain structure and high coercive force due to their small size. Using them to make magnetic recording materials can improve the signal-to-noise ratio.
2. The application of nano iron oxide in paints and coatings In pigments, nano iron oxide is also called transparent iron oxide (iron penetrating). The so-called transparency does not specifically refer to the macroscopic transparency of the particles themselves, but refers to the dispersion of pigment particles in the organic phase to make a layer of paint film (or oil film). When light is irradiated on the paint film, if it does not change the original Through the paint film, the pigment particles are said to be transparent. The transparent iron oxide pigment has high chroma, high tinting strength and high transparency, and has good grinding and dispersibility after special surface treatment. Transparent iron oxide pigments can be used for oiling and alkyd, amino alkyd, acrylic and other paints to make transparent paints, which have good decorative properties. This transparent paint can be used alone or mixed with other organic color pigment pastes. If a small amount of non-floating aluminum powder paste is added, it can be made into a metallic effect paint with a flickering feeling; it is matched with primers of different colors , Can be used in decorative occasions with high requirements, such as cars, bicycles, instruments, meters, and woodware. The iron-transmitting pigment's strong absorption of ultraviolet light makes it an ultraviolet shielding agent in plastics, and is used in packaging plastics such as beverages and medicines. Nano Fe2O3 also has broad application prospects in electrostatic shielding coatings, and Fe3O2 nano coatings with good electrostatic shielding have been successfully developed. Such nanoparticles with semiconductor properties have higher conductivity than conventional oxides at room temperature, and thus can play an electrostatic shielding role.
3. Application of nano-iron oxide in catalyst Nano-iron oxide is a very good catalyst. Hollow spheres made of nano-α-Fe2O3 are floated on the surface of wastewater containing organic matter. Using sunlight to degrade organic matter can accelerate the wastewater treatment process. This method is used by the United States, Japan, etc. to deal with pollution caused by offshore oil spills. Nano-α-Fe2O3 has been directly used as a catalyst for oxidation, reduction and synthesis of high molecular polymers. The nano-α-Fe2O3 catalyst can increase the cracking rate of petroleum by 1 to 5 times, and the burning speed of solid propellants made with it as a combustion catalyst can be increased by 1 to 10 times compared to the burning speed of ordinary propellants. Rockets and missiles are very beneficial.