cerium dioxide


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cerium dioxide

[′sir·ē·əm dī′äk‚sīd]
(inorganic chemistry)
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Taylor, used a custom-built device that simulates the colon to investigate the effects of titanium dioxide (TiO2), zinc oxide (ZnO), and cerium dioxide (CeO2) nanoparticles on microbiota from a healthy 26-year-old female.
Cerium dioxide, titanium dioxide and zinc oxide were specifically studied because of their prevalence in a range of products, including cosmetics, toothpaste and sunscreen.
As an example, cerium dioxide materials and barium sulfate are examined.
Zinc oxide and cerium dioxide are among today's most widely used NPs.
To our knowledge, this is the first report on the presence of cerium dioxide and zinc compounds in the reproductive and edible portions of the soybean plant grown in farm soil with cerium dioxide and zinc oxide nanoparticles.
Before 1995, the deposits were estimated to host 120 items of rare earth metals: oxide of yttrium group, phosphors K-77, K-84, lanthanum oxide and neodymium, cerium dioxide, rare earth metals and alloys, beryllium.
Further research is needed to understand the role of solubility and particle chemistry on the potential environmental effects of other nanoparticles, such as silver and cerium dioxide (used as a fuel catalyst),' says Dr Rogers.
These catalytic cerium dioxide particles are up to forty times as reactive as existing cerium dioxide nanocatalysts used as fuel additives.
The Pinnacle AF Nano-Oxides are all below 10nm and include: Aluminum Oxide (Al2O3), Silicon Dioxide (SiO2), Cerium Dioxide (CeO2) and PinnacleAF Zirconium Dioxide (ZrO2).
NanoTek(R) Cerium Dioxide HP is available in a particle range of 8 - 16 nanometers, also with improved particle size distribution, and, like NanoTek(R) Aluminum Oxide HP, is targeted for polishing applications, including semiconductors and rigid memory disks, as well as catalysis applications requiring high surface areas combined with high levels of chemical purity.
The company's engineered cerium dioxide product is already used in automotive catalysts.