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Updated: May 25, 2026

Catalytic Scavenging of Plant Reactive Oxygen Species In Vivo by Anionic Cerium Oxide Nanoparticles
Published on: August 26, 2018
Titanium doping reduces superoxide dismutase activity, but not oxidase activity, of catalytic CeO(2) nanoparticles
Aiping Zhu1, Kai Sun, Howard R Petty
1Department of Ophthalmology and Visual Sciences, The University of Michigan Medical School, Ann Arbor, MI 48105.
Abstract:
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.
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