Nanomaterial Information

Symbol UV irradiated nC60
Name UVA-irradiated fullerene nanoparticles
Source MER, Tucson, AZ

Dispersant  -
Size N/A
Aggregate Size[1] 109.4 ± 7.2 nm [2]
-1.13 µm/(V/cm)-s 
Refractive Index 2.2

Toxicity test method

Suspension preparation method
50 mL of the 10 mg/L nC60 suspension was added to each of four 50-mL Erlenmeyer flasks, sealed with parafilm with vents. The four Erlenmeyer flasks were placed on the merry-go round at the center of a luzchem LZC-4V photoreactor (Luzchem, Ottawa, Ontario, Canada), and slowly rotated to ensure uniform exposure to the light source. Four 8W Black-light-lamps (EIKO F8T5/BL, 2 on each side) with an emitting spectrum in the UVA range (centered at 350 nm) provided ~ 2.0 mW/cm2 light intensity as measured by a radiometer (Control Company Friendswood. TX). After 7 days of UVA irradiation, the UV-irradiated nC60 suspension from the four flasks was combined and concentrated to 200 mg/L using 30 kDa MWCO centrifugal concentrators (Amicon Ultra, Millipore, Massachusetts). The sample was stored at room temperature in a 50-mL centrifuge tube wrapped in aluminum foil for up to 1 week before use.

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. Qu, X. L.; Hwang, Y. S.; Alvarez, P. J. J.; Bouchard, D.; Li, Q. L., UV Irradiation and Humic Acid Mediate Aggregation of Aqueous Fullerene (nC(60)) Nanoparticles. Environ. Sci. Technol. 2010, 44, (20), 7821-7826.
  3. Measured at ~pH 5.

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