Title

Electron paramagnetic study on radical scavenging properties of ceria nanoparticles

Authors

Authors

S. Babu; A. Velez; K. Wozniak; J. Szydlowska;S. Seal

Comments

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Abbreviated Journal Title

Chem. Phys. Lett.

Keywords

OXIDE NANOPARTICLES; SUPEROXIDE; EPR; ANTIOXIDANTS; ADDUCTS; SIZE; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

Abstract

Ultrafine ceria nanoparticles in the size regime of 3-5 nm were synthesized by chemical methods. The oxygen free radical scavenging properties of ceria nanoparticle was studied using electron paramagnetic resonance technique at the concentrations of 1 mM and 10 mu M in the presence of a spin trap. The hydroxyl radical scavenging properties of ceria nanoparticles were found to vary, depending on the concentrations. At lower concentration the catalytic effect was found to be better compared to that at higher concentration, presumably due to the agglomeration at higher concentrations. (c) 2007 Published by Elsevier B.V.

Journal Title

Chemical Physics Letters

Volume

442

Issue/Number

4-6

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

405

Last Page

408

WOS Identifier

WOS:000248382300045

ISSN

0009-2614

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