Electron paramagnetic study on radical scavenging properties of ceria nanoparticles

    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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