Nanoceria: factors affecting its pro- and anti-oxidant properties
Abbreviated Journal Title
Environ.-Sci. Nano
Keywords
CERIUM OXIDE NANOPARTICLES; CHEMICAL MOLECULAR-DYNAMICS; SOLID-SOLUTION; INTERFACE; OXIDATIVE STRESS; PROTEIN CORONA; DIOXIDE NANOPARTICLES; SURFACE MODIFICATION; AQUEOUS SYSTEMS; PHASE-STABILITY; INDUCED DAMAGE; Chemistry, Multidisciplinary; Environmental Sciences; Nanoscience &; Nanotechnology
Abstract
Nanoceria redox properties are affected by particle size, particle shape, surface chemistry, and other factors, such as additives that coat the surface, local pH, and ligands that can participate in redox reactions. Each CeO2 crystal facet has a different chemistry, surface energy, and surface reactivity. Unlike nanoceria's industrial catalytic applications, biological and environment exposures are characterized by high water activity values and relatively high oxygen activity values. Electrochemical data show that oxygen levels, pH, and redox species affect its phase equilibria for solution and dissolution. However, not much is known about how the many and varied redox ligands in environmental and biological systems might affect nanoceria's redox behaviour, the effects of coated surfaces on redox rates and mechanisms, and whether the ceria solid phase undergoes dissolution at physiologically relevant pH and oxygen levels. Research that could answer these questions would improve our understanding of the links between nanoceria's redox performance and its morphology and environmental conditions in the local milieu.
Journal Title
Environmental Science-Nano
Volume
1
Issue/Number
5
Publication Date
1-1-2014
Document Type
Review
DOI Link
Language
English
First Page
429
Last Page
444
WOS Identifier
ISSN
2051-8153
Recommended Citation
"Nanoceria: factors affecting its pro- and anti-oxidant properties" (2014). Faculty Bibliography 2010s. 5396.
https://stars.library.ucf.edu/facultybib2010/5396
Comments
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