The application of cerium oxide

  Self-assembled particles have shown great advantages in many application fields, such as large specific surface area, more oxygen vacancies and higher activity. In the past few decades, the research of self-assembled nanocrystals has made great progress. Due to the small size effect of nanocrystals, they not only play a great role in basic scientific research, but also have great applications in other fields. Cerium oxide is a very important rare earth oxide. It is widely used in fuel cell polishing materials, luminescent materials, ultraviolet absorption materials, mesoporous materials, catalysis and other fields because of its unique reduction performance and strong oxygen storage and release ability. CeO2 and its composite oxides are prepared into nanoscale and regular shaped nanoparticles such as nanospheres, nanorods or nanowires, nanotubes and nanosheets. Its excellent properties can be greatly exploited, and many new properties and applications will appear, for example, in automobile exhaust purification catalysts, Nano-CeO2 and its composite oxides have large specific surface area and high oxygen storage capacity, and the dispersion of noble metal particles can be greatly improved, so the catalytic activity of the three-way catalyst can be greatly improved. CeO2 doping can also be used to prepare materials with other electrical properties.