Nanomaterial Information

Symbol CeO2
Name Cerium oxide nanopowder
Source Aldrich #544841, St. Louis, MO

Dispersant  -
Size Diameter: <25 nm
Aggregate Size[1] 90.9 ± 6.0 nm
+2.41 µm/(V/cm)-s 
Refractive Index  

Toxicity test method

Suspension preparation method
10 mg / 50 mg CeO2 was sonicated in 10 mL/50 mL ultrapure water generated by a Barnstead EPure system (Thermo Fisher Scientific, Waltham, MA) in a 10 -mL / 50 -mL centrifuge tube in a sonicating cup horn ( sonics & Material, Newtown, CT) at 100 W for 30 min. The samples were stored at room temperature in 10 -mL / 50 -mL centrifuge tubes wrapped in aluminum foil before use within 6 months.

Particle size measurement method

ENM electrophoretic mobility measurement.


  1. Number mean hydrodynamic diameter nm. Measured by dynamic light scattering (Zetasizer Nano, Malvern, Worcestershire, UK)
  2. Measured at ~pH 5.

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