Effect of annealing on luminescence and photocatalytic activity of ZnS nanocrystals under UV light irradiation

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Effect of annealing on luminescence and photocatalytic activity of ZnS nanocrystals under UV light irradiation
Original language description
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.
Czech name
—
Czech description
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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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings 12th International Conference on Nanomaterials - Research & Application
ISBN
978-80-87294-98-7
ISSN
2694-930X
e-ISSN
—
Number of pages
6
Pages from-to
261-266
Publisher name
Tanger Ltd.
Place of publication
Ostrava
Event location
Brno
Event date
Oct 21, 2020
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000664505500044

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