Tailored MXene-derived Nano-Heterostructure Oxide for Peroxymonosulfate Activation in the Treatment of Municipal Wastewaters
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00137073" target="_blank" >RIV/00216224:14310/24:00137073 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/Content/ArticleLanding/2024/NR/D4NR02819H" target="_blank" >https://pubs.rsc.org/en/Content/ArticleLanding/2024/NR/D4NR02819H</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/D4NR02819H" target="_blank" >10.1039/D4NR02819H</a>
Alternative languages
Result language
angličtina
Original language name
Tailored MXene-derived Nano-Heterostructure Oxide for Peroxymonosulfate Activation in the Treatment of Municipal Wastewaters
Original language description
Nowadays, in the field of environmental protection, a huge effort is focused on efficient and sustainable processes to treat wastewaters. The current study emphasizes the photocatalytic performance of TiNbOx, a nano-heterostructure material derived from the oxidation of (Ti0.75Nb0.25)2CTx MXene. TiNbOx nano-heterostructure exhibited remarkable performance in the degradation of caffeine (CAF) and sulfamethoxazole (SMX) under UVA irradiation in the presence of peroxymonosulfate (PMS). Under optimal conditions, 0.2 g L–1 of TiNbOx, 0.5 mM PMS and 50 µM concentration of pollutants, and natural pH of deionized water, we observed a complete degradation of SMX and 91 % degradation of CAF. Scavenging studies provided evidence for the involvement of •OH and SO4•– in the degradation of the pollutants, which was also supported by indirect techniques of electron paramagnetic resonance (EPR) spectroscopy. The degradation pathway of the pollutants was analyzed by liquid chromatography-mass spectrometry (LC-MS) and suggested several mechanisms including hydroxylation and isoxazole ring-opening reactions. In addition, X-ray photoelectron spectroscopy (XPS) supported the proposed degradation mechanism. The reusability test underscored the high stability and efficiency of TiNbOx. Moreover, the significance of this research was emphasized by conducting degradation studies in tap water (TW) and tertiary effluents of the wastewater (WW) treatment plant in Bratislava. Under optimal conditions, 49 % and 30 % of CAF were degraded in TW and WW, respectively, after 12 hours of reaction. For SMX, 68 % and 67 % degradation were obtained in TW and WW, respectively.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nanoscale
ISSN
2040-3364
e-ISSN
2040-3372
Volume of the periodical
16
Issue of the periodical within the volume
39
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
18430-18443
UT code for WoS article
001309642600001
EID of the result in the Scopus database
2-s2.0-85204231969