Tailored MXene-derived Nano-Heterostructure Oxide for Peroxymonosulfate Activation in the Treatment of Municipal Wastewaters

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Tailored MXene-derived Nano-Heterostructure Oxide for Peroxymonosulfate Activation in the Treatment of Municipal Wastewaters

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Tailored MXene-derived Nano-Heterostructure Oxide for Peroxymonosulfate Activation in the Treatment of Municipal Wastewaters

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Svazek periodika

16

Číslo periodika v rámci svazku

39

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

18430-18443

Kód UT WoS článku

001309642600001

EID výsledku v databázi Scopus

2-s2.0-85204231969