Titanium doping reduces superoxide dismutase activity, but not oxidase activity, of catalytic CeO2 nanoparticles

In this paper we report the enzymatic properties of Ti-doped CeO 2 nanoparticles. The superoxide dismutase activity of Ti-doped nanoparticles is reduced in comparison to undoped nanoceria. In contrast, the oxidase activity of these nanoparticles was unchanged. The change in enzymatic activity was ac...

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Published in:Inorganic chemistry communications 2012-01, Vol.15, p.235-237
Main Authors: Zhu, Aiping, Sun, Kai, Petty, Howard R.
Format: Article
Language:English
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Summary:In this paper we report the enzymatic properties of Ti-doped CeO 2 nanoparticles. The superoxide dismutase activity of Ti-doped nanoparticles is reduced in comparison to undoped nanoceria. In contrast, the oxidase activity of these nanoparticles was unchanged. The change in enzymatic activity was accompanied by a dramatic change in shape to a spherical nanostructure. In addition to reporting a new type of enzymatically-active nanoparticle, Ti-doped cerium oxide nanoparticles are well suited for biological applications.
ISSN:1387-7003
DOI:10.1016/j.inoche.2011.10.034