Enhanced sunlight photo-catalytic performances of ZnO/ZnNb2O6/Nb2O5 composites for organic pollutant degradation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476040" target="_blank" >RIV/00216208:11320/23:10476040 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=dT0vV1D3jC" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=dT0vV1D3jC</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.optmat.2023.113637" target="_blank" >10.1016/j.optmat.2023.113637</a>
Alternative languages
Result language
angličtina
Original language name
Enhanced sunlight photo-catalytic performances of ZnO/ZnNb2O6/Nb2O5 composites for organic pollutant degradation
Original language description
The current study is focused on the development of zinc oxide-based ternary photo-catalysts that exhibit a good photocatalytic activity in methylene blue (MB) dye degradation, under sunlight irradiation. Indeed, the com-posites are prepared according to this proportion:(1-x) ZnO/xNb2O5, (x = 0; 0.01; 0.05; 0.1; 0.15; 0.2). In fact, X-ray diffraction patterns demonstrate that, for x = 0.01, a binary composite ZnO/ZnNb2O6 is formed. While ternary composite ZnO/ZnNb2O6/Nb2O5 is formed from x = 0.05. The linear and nonlinear optical properties are studied. So, compared to the ZnO (3.24 eV), the prepared composites exhibit a gap energy red-shift (3.18-3.22 eV), probably due to the interactions between oxide phases. Furthermore, the composites exhibit a high optical conductivity, which proves their high photo-responses. On the other hand, the increase of Nb2O5 amount led to an enhancement of nonlinear properties. Moreover, the photocatalytic tests demonstrate an excellent photo -catalytic performance in MB degradation that reaches 100% after 120 min sun-light irradiation. Especially for 5% sample which exhibit also the best kinetic rate. These results allowed us to consider the ZnO/ZnNb2O6/Nb2O5 composites as promising materials for environmental applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Optical Materials
ISSN
0925-3467
e-ISSN
1873-1252
Volume of the periodical
138
Issue of the periodical within the volume
Apr
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
10
Pages from-to
113637
UT code for WoS article
000991601100001
EID of the result in the Scopus database
2-s2.0-85149184484