Cerium oxide is an inorganic substance with the chemical formula CeO2, light yellow or yellow-brown powder. It is insoluble in water and alkali, slightly soluble in acid. Common application scenarios: polishing materials, catalysts, catalyst carriers (auxiliaries), ultraviolet absorbers, fuel cell electrolytes, automobile exhaust absorbers, electronic ceramics, etc.
The following introduces various application scenarios of cerium oxide:
1. Catalyst for automobile exhaust
Cerium oxide is a key component of automobile exhaust three-way catalyst, which can effectively remove CO, NOx and hydrocarbons in exhaust gas and reduce air pollution. Industrial catalyst: Cerium oxide is also used in other industrial catalytic processes, such as petrochemicals, fine chemicals, environmental protection and other fields.
2. Glass polishing material
Cerium oxide is the main component of high-quality glass polishing liquid, which can efficiently remove scratches and flaws on the glass surface, and is widely used in the processing of optical glass, eyeglass lenses, mobile phone screens and other products.
3. UV absorbers
Sunscreen cosmetics: Nano-level cerium oxide can effectively absorb ultraviolet rays. Adding it to cosmetics such as sunscreen and lotion can effectively protect the skin from ultraviolet rays.
UV shielding materials: Cerium oxide can be used to make ultraviolet shielding materials, such as coatings, films, glass, etc., which are used in construction, automobiles, electronic products and other fields.
4. Batteries
Solid oxide fuel cells (SOFC): Cerium oxide is an important component of such batteries. It can be used as an electrolyte or electrode material for batteries, thereby improving the performance and efficiency of fuel cells.
5. Other applications
When cerium oxide is added to sensors, it can be used to detect the oxygen content in automobile exhaust and industrial waste gas;
When cerium oxide is used as a matrix or activator of luminescent materials, it can be used to make phosphors, LEDs, etc.;
When cerium oxide is used to make ceramic materials, such as capacitors, piezoelectric ceramics, etc.;
Some studies have shown that cerium oxide nanoparticles have biological activities such as antioxidant and anti-inflammatory, and may be used in the field of biomedicine.
Cerium oxide has a wide range of applications, and with the advancement of science and technology, it may be explored for more performance.