Effect of annealing on luminescence and photocatalytic activity of ZnS nanocrystals under UV light irradiation
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F21%3A63543478" target="_blank" >RIV/70883521:28610/21:63543478 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.37904/nanocon.2020.3707" target="_blank" >http://dx.doi.org/10.37904/nanocon.2020.3707</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37904/nanocon.2020.3707" target="_blank" >10.37904/nanocon.2020.3707</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of annealing on luminescence and photocatalytic activity of ZnS nanocrystals under UV light irradiation
Popis výsledku v původním jazyce
Zinc sulfide (ZnS) nanocrystals were prepared at a large-scale via precipitation of Zn2+ ions water solution with gaseous hydrogen sulfide, H2S. The effect of annealing time on the ZnS phase structure, morphology, and optical properties was investigated in detail by XRD, SEM, UV-vis, and photoluminescence (PL) spectroscopy. It was observed that pristine ZnS possessed a pure cubic phase structure and an increase in annealing time resulted in a phase mixture with increased content of wurtzite phase structure. Moreover, the crystallinity of the prepared samples, as well as PL intensities, increased with increasing annealing time. Photocatalytic activities of the pristine ZnS annealed at different time intervals were evaluated by the means of methyl violet 2B (MV 2B) degradation under UV LED illumination wavelengths at λmax~ 343 nm and 365 nm. It was observed that the photocatalytic activities of the annealed ZnS samples increased with increasing annealing time. The improved photocatalytic performance can be attributed to the improved crystallinity of annealed ZnS samples.
Název v anglickém jazyce
Effect of annealing on luminescence and photocatalytic activity of ZnS nanocrystals under UV light irradiation
Popis výsledku anglicky
Zinc sulfide (ZnS) nanocrystals were prepared at a large-scale via precipitation of Zn2+ ions water solution with gaseous hydrogen sulfide, H2S. The effect of annealing time on the ZnS phase structure, morphology, and optical properties was investigated in detail by XRD, SEM, UV-vis, and photoluminescence (PL) spectroscopy. It was observed that pristine ZnS possessed a pure cubic phase structure and an increase in annealing time resulted in a phase mixture with increased content of wurtzite phase structure. Moreover, the crystallinity of the prepared samples, as well as PL intensities, increased with increasing annealing time. Photocatalytic activities of the pristine ZnS annealed at different time intervals were evaluated by the means of methyl violet 2B (MV 2B) degradation under UV LED illumination wavelengths at λmax~ 343 nm and 365 nm. It was observed that the photocatalytic activities of the annealed ZnS samples increased with increasing annealing time. The improved photocatalytic performance can be attributed to the improved crystallinity of annealed ZnS samples.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
21001 - Nano-materials (production and properties)
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
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Proceedings 12th International Conference on Nanomaterials - Research & Application
ISBN
978-80-87294-98-7
ISSN
2694-930X
e-ISSN
—
Počet stran výsledku
6
Strana od-do
261-266
Název nakladatele
Tanger Ltd.
Místo vydání
Ostrava
Místo konání akce
Brno
Datum konání akce
21. 10. 2020
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
000664505500044