title: Titanium doping reduces superoxide dismutase activity, but not oxidase activity, of catalytic CeO(2) nanoparticles.
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.
authors.affiliation: Department of Ophthalmology and Visual Sciences, The University of Michigan Medical School, Ann Arbor, MI 48105.
authors.forename: Aiping
authors.initials: A
authors.lastname: Zhu
authors.forename: Kai
authors.initials: K
authors.lastname: Sun
authors.forename: Howard R
authors.initials: HR
authors.lastname: Petty