Product Name
Name:：Cerium Oxide Nanoparticles
Product Overview
Cerium (Ce) is one of the rare earth elements with extremely abundant reserves and low cost. Due to its unique 4f electronic structure, cerium has been widely used in various fields such as alloys, fluorescence, magnetism, and catalysis in recent years. Correspondingly, its oxide cerium dioxide (light yellow powder) has also attracted great attention. The crystal structure of CeO2 is a cubic fluorite structure, in which the metal cation (Ce4+) is arranged according to a face centered cubic lattice, while the anion (O2-) is located at the center of the tetrahedron. Ce element usually contains two oxidation states, Ce4+and Ce3+. When the temperature is high or in a reducing environment, it can be reduced to CeO2-x (0<x ¡ãC0.5), resulting in rapid and reversible conversion between the two valence states. Therefore, oxygen vacancy defects are easily present in the lattice of CeO2-x. Due to its inherent oxide defects and excellent redox performance and oxygen storage capacity, CeO2 nanoparticles are commonly used as active oxide carriers for multiphase catalysts or catalysts. At present, the preparation of cerium dioxide nanomaterials is usually based on chemical methods, such as precipitation method, sol gel method, hydrothermal method, etc.
Technical Parameter
Diameter:2-6 nm (TEM)
Concentration: mg/m
Solvent：Ultra pure water
Surface modification：PAA
Product Features
Size effect: The nanoscale size endows ceria particles with high specific surface area and special surface properties, resulting in an increase in surface active sites and enhanced reaction activity. Redox: Cerium dioxide has high redox activity and reversible oxidation states, which gives it unique advantages in the fields of catalysts and oxidants. Stability: Cerium dioxide nanoparticles have good stability under certain conditions and are not easily decomposed or denatured. Biocompatibility: Cerium dioxide nanoparticles exhibit good biocompatibility in the biomedical field and are suitable for applications such as drug delivery and biological imaging.
Application Fields
Catalyst: Cerium dioxide nanoparticles have important applications in automotive exhaust treatment, chemical reaction catalysis, and energy conversion. Its high redox activity significantly improves the performance of the catalyst. Antioxidants: Cerium dioxide nanoparticles, as antioxidants, can effectively combat free radical damage and protect cell and tissue health in the biomedical field and material modification. Gas sensor: Utilizing its unique sensing performance, ceria nanoparticles can be used to detect harmful gases such as carbon monoxide and hydrogen, improving environmental monitoring and safety protection levels. Fuel cell: As the electrolyte material of solid oxide fuel cells, the oxygen ion conductivity of ceria nanoparticles helps to improve the performance and efficiency of fuel cells. Electronic ceramics: In the field of electronic ceramics, nano cerium dioxide can effectively improve the smoothness and density of ceramics, and enhance their physical properties.
Related Information
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