Enhanced sunlight photo-catalytic performances of ZnO/ZnNb2O6/Nb2O5 composites for organic pollutant degradation

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced sunlight photo-catalytic performances of ZnO/ZnNb2O6/Nb2O5 composites for organic pollutant degradation

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Enhanced sunlight photo-catalytic performances of ZnO/ZnNb2O6/Nb2O5 composites for organic pollutant degradation

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Optical Materials

ISSN

0925-3467

e-ISSN

1873-1252

Svazek periodika

138

Číslo periodika v rámci svazku

Apr

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

113637

Kód UT WoS článku

000991601100001

EID výsledku v databázi Scopus

2-s2.0-85149184484