Or ferric oxide, chemical formula Fe2O3, is the main component of rust and hematite.
Mining: hematite containing iron oxide is used to make iron to produce steel, alloys, etc.
Magnetic material:Due to their special superparamagnetic properties, magnetic iron oxide particles have broad applications in giant magnetoresistance, magnetic liquids and magnetic recording, soft magnetism, permanent magnets, magnetic refrigeration, giant magnetoresistance materials, magneto-optical devices, and magnetic detectors. application prospects.
Pigment field: As a pigment, iron oxide is widely used in high-end automotive coatings, architectural coatings, anti-corrosion coatings, and powder coatings. It is a good environmental protection coating. Iron oxide is a commonly used colorant in glass production. Widely used in the manufacture of heat-absorbing glass, sunglasses glass, industrial protective glasses glass and military anti-infrared coatings. At the same time, it has the functions of low price, absorption of heat rays and ultraviolet rays [5] .
In addition, iron oxide pigments are also widely used abroad as colorants and protective agents for wood coating.
Catalysis: Nano-α-Fe2O3 has been directly used as a catalyst for the oxidation, reduction and synthesis of high molecular polymers, when it is used as a catalyst for petroleum refining and solid combustion agents.
Biomedical and other fields:Nano-iron oxide plays an important role in medicinal capsules, drug synthesis, biomedical technology and other fields. Nano-scale iron oxide has a certain application value for the treatment of Cr(VI) in environmental sewage; nano-α-Fe2O3 is used to make gas-sensitive materials. When preparing transparent iron oxide, if the content of arsenic and heavy metals is strictly controlled, it can be used for Food, cosmetics and other industries; because transparent iron oxide has the characteristics of transparent coloring, acid and alkali resistance and non-toxicity, it can also be used as a coating for the inner wall of can lids, and has a large number of applications in the United States [5] .