Radiation-Induced Reduction of Ceria in Single and Polycrystalline Thin Films

Journal Article · Thu Jan 12 00:00:00 EST 2012 · Journal of Physical Chemistry C

DOI:https://doi.org/10.1021/jp209345w· OSTI ID:1036060

Kumar, Amit; Devanathan, Ramaswami; Shutthanandan, V; Karakoti, Ajay S; Yang, Yong; Thevuthasan, Suntharampillai; Seal, Sudipta

Ceria (CeO{sub 2}) is a technologically important ceramic material with a wide range of neoteric applications in catalysis, solid oxide fuel cells, oxygen gas sensors, hydrogen production, and ultraviolet shielding. Recent research has revealed promising biomedical applications of ceria. Nanoparticles of ceria have been shown to protect healthy cells from radiation-induced cellular damage. The mechanisms governing the radioprotection characteristics of ceria nanoparticles are not well understood and it has been hypothesized that reversible switching between Ce{sup 4+} and Ce{sup 3+} states may enable ceria nanoparticles to mop up free radicals.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1036060
• Report Number(s): PNNL-SA-77391; 30507; KC0201020; KP1704020; TRN: US201205%%577
• Journal Information: Journal of Physical Chemistry C, Vol. 116, Issue 1; ISSN 1932-7447
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
30 DIRECT ENERGY CONVERSION
CATALYSIS
CERAMICS
HYDROGEN PRODUCTION
OXYGEN
RADICALS
SENSORS
SHIELDING
SOLID OXIDE FUEL CELLS
THIN FILMS
Radiation
induced
valence
state
alterations
nanostructured
ceria
thin
films
Environmental Molecular Sciences Laboratory