Electron paramagnetic study on radical scavenging properties of ceria nanoparticles

被引：81

作者：

Babu, Suresh

Velez, Anthony

Wozniak, Krzysztof

Szydlowska, Jadwiga

Seal, Sudipta ^{[1
]}

机构：

[1] Univ Cent Florida, Adv Mat Proc & Anal Ctr, Dept Mech Mat & Aerosp Engn, Orlando, FL 32816 USA

[2] Univ Warsaw, Dept Chem, PL-00325 Warsaw, Poland

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 442卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2007.06.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

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页码：405 / 408

页数：4

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