Photoactive and hydrophobic nano-ZnO/poly(alkyl siloxane) coating for the protection of sandstone
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F19%3A00504193" target="_blank" >RIV/68145535:_____/19:00504193 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61989100:27360/19:10239586 RIV/61989100:27640/19:10239586 RIV/61989100:27740/19:10239586
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0950061818330265?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950061818330265?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.conbuildmat.2018.12.045" target="_blank" >10.1016/j.conbuildmat.2018.12.045</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Photoactive and hydrophobic nano-ZnO/poly(alkyl siloxane) coating for the protection of sandstone
Popis výsledku v původním jazyce
Poly(alkyl siloxane) containing photoactive nano-ZnO (0.5 wt%) has been studied as a protective coating of glauconitic sandstone. Effect on visual appearance, hydrophobicity, porosity, water absorption/evaporation, and self-cleaning ability of the sandstone was measured. The results were evaluated in comparison with uncoated and poly(alkyl siloxane)-coated sandstone. Static contact angle of water reached 89 degrees +/- 3 degrees and 128 degrees +/- 2 degrees for poly(alkyl siloxane) and nano-ZnO/poly(alkyl siloxane) coating, respectively. Poly(alkyl siloxane) and nano-ZnO/poly(alkyl siloxane) coatings led to increased reduction in water absorption (>50%) for similar to 18 h and similar to 8 h, respectively, compared to the uncoated sandstone. The shorter time is compensated by self-cleaning ability: photodegradation of methylene blue on the nano-ZnO/poly(alkyl siloxane) coating after 5 h of UV irradiation was observed. This coating is a promising candidate for practical use in sandstone monuments protection.
Název v anglickém jazyce
Photoactive and hydrophobic nano-ZnO/poly(alkyl siloxane) coating for the protection of sandstone
Popis výsledku anglicky
Poly(alkyl siloxane) containing photoactive nano-ZnO (0.5 wt%) has been studied as a protective coating of glauconitic sandstone. Effect on visual appearance, hydrophobicity, porosity, water absorption/evaporation, and self-cleaning ability of the sandstone was measured. The results were evaluated in comparison with uncoated and poly(alkyl siloxane)-coated sandstone. Static contact angle of water reached 89 degrees +/- 3 degrees and 128 degrees +/- 2 degrees for poly(alkyl siloxane) and nano-ZnO/poly(alkyl siloxane) coating, respectively. Poly(alkyl siloxane) and nano-ZnO/poly(alkyl siloxane) coatings led to increased reduction in water absorption (>50%) for similar to 18 h and similar to 8 h, respectively, compared to the uncoated sandstone. The shorter time is compensated by self-cleaning ability: photodegradation of methylene blue on the nano-ZnO/poly(alkyl siloxane) coating after 5 h of UV irradiation was observed. This coating is a promising candidate for practical use in sandstone monuments protection.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Construction and Building Materials
ISSN
0950-0618
e-ISSN
—
Svazek periodika
199
Číslo periodika v rámci svazku
February 2019
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
11
Strana od-do
549-559
Kód UT WoS článku
000458221600050
EID výsledku v databázi Scopus
2-s2.0-85058507514