Precipitation of Zinc Oxide Nanoparticles Under UV-Irradiation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10238302" target="_blank" >RIV/61989100:27360/17:10238302 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/17:10367956 RIV/61989100:27710/17:10238302
Result on the web
<a href="http://www.ingentaconnect.com/content/asp/jnn/2017/00000017/00000007/art00051;jsessionid=1q9mf74kcmz21.x-ic-live-01" target="_blank" >http://www.ingentaconnect.com/content/asp/jnn/2017/00000017/00000007/art00051;jsessionid=1q9mf74kcmz21.x-ic-live-01</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1166/jnn.2017.13778" target="_blank" >10.1166/jnn.2017.13778</a>

Result language
angličtina
Original language name
Precipitation of Zinc Oxide Nanoparticles Under UV-Irradiation
Original language description
the influence of UV irradiation (254 nm) on the precipitation of ZnO nanoparticles was studied. UV irradiation was found to induce photocorrosion of originating ZnO nanoparticles, which resulted in the formation of oxygen and zinc vacancies confirmed by photoluminescence and positron annihilation spectroscopy. The oxygen vacancies were formed by the reactions of hydroxyl radicals with oxygen atoms of the ZnO lattice. Positron annihilation spectroscopy also revealed the presence of oxygen and zinc divacancies and the clusters of 5 zinc vacancies and 10 oxygen vacancies, which enhanced the orange-red photoluminescence of ZnO nanoparticles. Using electron transmission microscopy and high resolution electron transmission microscopy a median of the ZnO nanoparticle sizes was estimated at about 17 nm while a median of the ZnO nanocrystal sizes was about 7 nm, respectively. No effects of the photocorrosion on the nanoparticle and nanocrystal sizes were observed. A new mechanism of the Zn(OH)2 formation based on the reactions of hydroxyl radicals with zinc precursors was suggested.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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