Cerium Oxide (CeO2) Powder
Rare-earth metal cerium (Ce) belongs to the lanthanide series. Cerium oxide (CO2), which is also known as ceria, is a cubic fluorite-type in fcc arrangement. The CeO2 nanoparticles are generally found in a pale-white powder form. In contrast to other elements in the lanthanide series, cerium can exist in both trivalent (Ce+3) and quadrivalent (Ce+4) oxidation states. Quick and expedient change in its oxidation state makes CeO2 and excellent catalyst candidate. The catalytic activity of CeO2 is utilized in various different applications such as including production and purification of hydrogen, and carbon monoxide removal from the automobile exhaust. Since the quadrivalent oxidation state of ceria is much more stable than its trivalent state, it can be effectively used in oxygen storage and transportation. Other application areas of CeO2 are; oxygen resistant materials, oxygen sensors, UV absorbers, light-harvesting devices, and optical displays, buffer layers with a silicon wafer, nanomedicine, and tissue engineering.