Nano cerium oxide has small particle size, uniform particle size distribution, and high purity. Insoluble in water and alkali, slightly soluble in acid. It can be used as a polishing material, catalyst, catalyst carrier (additive), automobile exhaust absorbent, ultraviolet absorbent, fuel cell electrolyte, electronic ceramic, etc. Nano level cerium oxide can directly affect the properties of materials. For example, adding ultrafine nano cerium oxide to ceramics can lower the sintering temperature, suppress lattice growth, and improve the density of ceramics. A larger specific surface area can better enhance the catalytic activity of the catalyst. Its variable valence characteristic gives it excellent optoelectronic properties, which can be doped into other semiconductor materials for modification, improving the efficiency of light quantum migration and enhancing the material's photoexcitation effect.
1. Applied to UV absorption
According to research, ultraviolet light between 280nm and 320nm can cause skin tanning, sunburn, and in severe cases, even skin cancer. Adding nanoscale cerium oxide to cosmetics can reduce the harm of ultraviolet radiation to the human body. Nano cerium oxide has a strong absorption effect on ultraviolet radiation and can be used as an ultraviolet absorber for products such as sunscreen cosmetics, automotive glass, sunscreen fibers, coatings, plastics, etc. Cerium oxide is used in cosmetics for sun protection, as it has no characteristic absorption of visible light, good transparency, and a good effect in preventing ultraviolet rays; Moreover, coating amorphous silicon oxide on cerium oxide can reduce its catalytic activity, thereby preventing the discoloration and deterioration of cosmetics caused by the catalytic activity of cerium oxide.
2. Applied to catalysts
Cerium oxide is an important catalyst widely used in chemical industry, environmental protection, energy and other fields. In the chemical industry, cerium oxide is commonly used to prepare organic chemicals such as acrylic acid, acrylic ester, acrylonitrile, etc. In addition, cerium oxide can also be used as a catalyst in reactions such as hydrogen production, ammonia synthesis, and methanol production.
In the field of environmental protection, cerium oxide can be used to purify harmful substances in exhaust gas, such as carbon monoxide, nitrogen oxides, etc. In addition, cerium oxide can also be used to purify harmful substances in wastewater, such as heavy metal ions, organic matter, etc.
In the field of energy, cerium oxide can be used to prepare fuel cells, solar cells, etc. In addition, cerium oxide can also be used to prepare energy storage materials, such as cerium oxide lithium batteries.
Adding nano cerium oxide to automotive exhaust purification agents has the following advantages over adding non nano cerium oxide: nano cerium oxide particles have a larger specific surface area, higher coating amount, lower harmful impurity content, and increased oxygen storage capacity; Nano cerium oxide is at the nanoscale, ensuring a high specific surface area of the catalyst in high-temperature atmosphere, thereby greatly improving catalytic activity; As an additive, it can reduce the amount of platinum and rhodium used, automatically adjust the air-fuel ratio and catalytic effect, and improve the thermal stability and mechanical strength of the carrier.
3. Applied to the steel industry
Rare earth elements, due to their unique atomic structure and activity, are used as trace additives in materials such as steel, cast iron, aluminum, nickel, tungsten, etc. They can eliminate impurities, refine grains, and improve material composition, thereby improving the mechanical, physical, and processing properties of alloys, enhancing their thermal stability and corrosion resistance. For example, in the steel industry, rare earth elements can be used as additives to purify molten steel, change the morphology and distribution of impurities in the center of the steel, refine the grain size, and alter the structure and properties. The use of nano cerium oxide as a coating and additive can improve the oxidation resistance, hot corrosion, water corrosion, and sulfurization properties of high-temperature alloys and stainless steel, and can also be used as an inoculant for ductile iron.
4. Applied to ceramic materials
Cerium oxide is an important ceramic material widely used in the preparation of ceramic products. Cerium oxide can be used as a reinforcing agent, stabilizer, coloring agent, etc. in the preparation of ceramic products. For example, cerium oxide can be used to prepare high-temperature ceramic products, such as ceramic ovens, ceramic stoves, etc. In addition, cerium oxide can also be used to prepare ceramic tableware, ceramic vases, ceramic decorations, etc.
5. Applied to glass materials
Cerium oxide is an important glass material widely used in the preparation of glass products. Cerium oxide can be used as a coloring agent, reinforcing agent, stabilizer, etc. in the preparation of glass products. For example, cerium oxide can be used to prepare blue glass, green glass, purple glass, etc. In addition, cerium oxide can also be used to prepare glassware, glassware, glass vases, etc.
6. Applied to pharmaceutical materials
Cerium oxide is an important pharmaceutical material widely used in the preparation of pharmaceutical products. Cerium oxide can be used as a drug carrier, drug release agent, biosensor, etc. in the preparation of pharmaceutical products. For example, cerium oxide can be used to prepare tumor therapy drugs, antiviral drugs, etc. In addition, cerium oxide can also be used to prepare biosensors such as blood glucose meters, blood pressure monitors, etc.
7. Applied to other aspects
Nano cerium oxide has many applications, such as using cerium oxide based composite oxides as electrolytes in fuel cells, which can provide sufficient oxygen ionization current density at 500 ℃ to 800 ℃; Adding cerium oxide during the rubber vulcanization process can have a certain modifying effect on the rubber; Cerium oxide also plays an important role in fields such as luminescent materials and magnetic materials.