Precipitation of Zinc Oxide Nanoparticles Under UV-Irradiation
Identifikátory výsledku
Kód výsledku v 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>
Nalezeny alternativní kódy
RIV/00216208:11320/17:10367956 RIV/61989100:27710/17:10238302
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Precipitation of Zinc Oxide Nanoparticles Under UV-Irradiation
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Precipitation of Zinc Oxide Nanoparticles Under UV-Irradiation
Popis výsledku anglicky
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.
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
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of nanoscience and nanotechnology
ISSN
1533-4880
e-ISSN
—
Svazek periodika
17
Číslo periodika v rámci svazku
7
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
7
Strana od-do
4805-4811
Kód UT WoS článku
000402487200051
EID výsledku v databázi Scopus
2-s2.0-85018567367