NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2013, 4 (1), P. 83-89
SYNTHESIS, BIOACTIVITY AND PHOTOCATALYTIC ACTIVITY OF CITRATE-STABILIZED CERIA SOLS
T. O. Shekunova – Department of Materials Science, M.V. Lomonosov Moscow State University, Moscow, Russia
D. O. Gil – Department of Materials Science, M.V. Lomonosov Moscow State University, Moscow, Russia
O. S. Ivanova – N. S. Kurnakov Institute of General and Inorganic Chemistry RAS, Moscow, Russia
V. K. Ivanov – Department of Materials Science, M.V. Lomonosov Moscow State University, Moscow, Russia; N. S. Kurnakov Institute of General and Inorganic Chemistry RAS, Moscow, Russia
Yu.D. Tretyakov – Department of Materials Science, M.V. Lomonosov Moscow State University, Moscow, Russia
Cerium dioxide is a unique material which is promising for biomedical applications. The vast majority of currently existing methods of synthesis results in CeO2 formation in the form of nanopowders. However such powders are useless as biomedical preparations because their exact dosage is nearly impossible. In this paper, we have offered a facile method of ceria stable sols synthesis and investigated the effect of varying concentrations and molar ratio of initial reagents on the CeO2 particle size. The toxicity of ceria sols has been analyzed using Vibrio fischeri and Escherichia Coli bioluminescent microorganisms. Comparative studies of photocatalytic activity of ceria sols has been also performed.
Keywords: Cerium dioxide, sols, biological activity, photocatalytic activity
UDC 546.655.4-31
PACS 82.70.Dd, 87.85.Rs
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