Engineering ultra-small nanoceria with antioxidant and UV-shielding properties as functional nanomaterials in composite coatings for complex surface protection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510627" target="_blank" >RIV/00216208:11320/25:10510627 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Z5VYbPgH.y" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Z5VYbPgH.y</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d5nr02680f" target="_blank" >10.1039/d5nr02680f</a>
Alternative languages
Result language
angličtina
Original language name
Engineering ultra-small nanoceria with antioxidant and UV-shielding properties as functional nanomaterials in composite coatings for complex surface protection
Original language description
The development of advanced catalytic shields against UV-induced and oxidative degradation phenomena is critical to address multifaceted deterioration processes. The maximization of the surface-to-volume ratio in ultra-small cerium oxide nanoparticles (CeO2 NPs) favors the Ce(iii)/Ce(iv) exchange on the surface and the formation of oxygen vacancies, creating an ideal platform to target entangled degradation issues. Here, we design a microwave-assisted scalable process to obtain highly stable CeO2 NPs (2 nm), and we demonstrate the redox cycling of the nanocatalyst by means of environmental XPS. Thereafter, we develop a polymer nanocomposite formulation in which the biopolymer and the catalytic nanomaterial work synergistically to provide a protective action without hindering the active sites present at the surface of the NPs. We test the protective action of the coating in the challenging context of cultural heritage, investigating its performance on ancient frescoes. Their surfaces are often subjected to pigment degradation, triggered by a combination of light, salts, and high relative humidity. We verify how, thanks to the joint action of the biopolymer and the NPs, the CeO2 NP-based coating effectively mitigates complex deterioration mechanisms.
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
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/EF18_046%2F0015962" target="_blank" >EF18_046/0015962: Surface Physics Laboratory - Materials Science Beamline II</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nanoscale
ISSN
2040-3364
e-ISSN
2040-3372
Volume of the periodical
17
Issue of the periodical within the volume
43
Country of publishing house
GB - UNITED KINGDOM
Number of pages
15
Pages from-to
25239-25253
UT code for WoS article
001599413500001
EID of the result in the Scopus database
2-s2.0-105021024198