Luminescence and optical properties of cerium oxide nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00506182" target="_blank" >RIV/68081723:_____/19:00506182 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0925346719302502?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925346719302502?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.optmat.2019.04.021" target="_blank" >10.1016/j.optmat.2019.04.021</a>
Alternative languages
Result language
angličtina
Original language name
Luminescence and optical properties of cerium oxide nanoparticles
Original language description
Cerium oxide (CeO2) nanoparticles present an interesting material for various applications in biotechnology and medicine. The mechanism of CeO2 nanoparticles activity is supposed to be related to the presence both Ce3+ and Ce4+ ions on the surface of the nanocrystal. Due to the Ce3+ ions, the charge deficiency of a crystal is compensated by oxygen vacancies in the lattice. The present work is devoted to study the cerium oxide defects by optical and luminescence spectroscopy methods. The CeO2 nanoparticles was produced by the method of pulsed electron evaporation of ceramic oxide targets with condensation of the vapors in a vacuum. The strong non-equilibrium conditions of this method could lead to higher oxygen non-stoichiometry of cerium oxide. The results of work show the cerium nanocrystal manifests an emission provided by intracenter transitions in the Ce3+ ions, F-0-centers and Ce4+-O2- complexes with charge transfer. The band gap E-g of the CeO2 nanoparticles for direct and indirect transitions was estimated. The cerium oxide was found to demonstrate catalase-mimic activity, as well as differential cytotoxicity in relation to tumor and healthy cell cultures.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Optical Materials
ISSN
0925-3467
e-ISSN
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Volume of the periodical
92
Issue of the periodical within the volume
JUN
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
136-142
UT code for WoS article
000470938900018
EID of the result in the Scopus database
2-s2.0-85064160669