Redox enzyme-mimicking activities of CeO₂ nanostructures: Intrinsic influence of exposed facets.

ABSTRACT: CeO₂ nanoparticles (NPs) have been well demonstrated as an antioxidant in protecting against oxidative stress-induced cellular damages and a potential therapeutic agent for various diseases thanks to their redox enzyme-mimicking activities. The Ce³⁺/Ce⁴⁺ ratio and oxygen vacancies on the surface have been considered as the major originations responsible for the redox enzyme-mimicking activities of CeO₂ NPs. Herein, CeO₂ nanostructures (nanocubes and nanorods) exposed different facets were synthesized via a facile hydrothermal method. The characterizations by X-ray photoelectron spectroscopy, Raman spectroscopy, and UV-Vis spectroscopy show that the Ce³⁺/Ce⁴⁺ ratio and oxygen vacancy content on the surfaces of as-s

SUBMITTER: Yang Y 

PROVIDER: S-EPMC5066218 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature