articleNPG Asia MaterialsMar 1, 2014GOLD OA

Cerium oxide nanoparticle: a remarkably versatile rare earth nanomaterial for biological applications

Changchun Institute of Applied Chemistry · Chinese Academy of Sciences · +1 more institution

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Abstract

Cerium oxide nanoparticles (CeONPs) have received much attention because of their excellent catalytic activities, which are derived from quick and expedient mutation of the oxidation state between Ce4+ and Ce3+. The cerium atom has the ability to easily and drastically adjust its electronic configuration to best fit its immediate environment. It also exhibits oxygen vacancies, or defects, in the lattice structure; these arise through loss of oxygen and/or its electrons, alternating between CeO2 and CeO2−x during redox reactions. Being a mature engineered nanoparticle with various industrial applications, CeONP was recently found to have multi-enzyme, including superoxide oxidase, catalase and oxidase, mimetic…

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