Photocatalytic degradation of metoprolol tartrate in suspensions of two TiO 2-based photocatalysts with different surface area. Identification of intermediates and proposal of degradation pathways
Само за регистроване кориснике
2011
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
This study investigates the efficiency of the photocatalytic degradation of metoprolol tartrate (MET), a widely used β 1-blocker, in TiO 2 suspensions of Wackherr's " Oxyde de titane standard" and Degussa P25. The study encompasses transformation kinetics and efficiency, identification of intermediates and reaction pathways. In the investigated range of initial concentrations (0.01-0.1mM), the photocatalytic degradation of MET in the first stage of the reaction followed approximately a pseudo-first order kinetics. The TiO 2 Wackherr induced a significantly faster MET degradation compared to TiO 2 Degussa P25 when relatively high substrate concentrations were used. By examining the effect of ethanol as a scavenger of hydroxyl radicals (OH), it was shown that the reaction with OH played the main role in the photocatalytic degradation of MET. After 240min of irradiation the reaction intermediates were almost completely mineralized to CO 2 and H 2O, while the nitrogen was predominantly pre...sent as NH4+. Reaction intermediates were studied in detail and a number of them were identified using LC-MS/MS (ESI+), which allowed the proposal of a tentative pathway for the photocatalytic transformation of MET as a function of the TiO 2 specimen.
Кључне речи:
β 1-Blocker / Metoprolol tartrate / Photocatalytic degradation / Photocatalytic transformation pathways / Titanium dioxideИзвор:
Journal of Hazardous Materials, 2011, 198, 123-132Издавач:
- Elsevier
Финансирање / пројекти:
- Развој и примена метода и материјала за мониторинг нових загађујућих и токсичних органских материја и тешких метала (RS-MESTD-Basic Research (BR or ON)-172007)
DOI: 10.1016/j.jhazmat.2011.10.017
ISSN: 1873-3336
WoS: 000298778700016
Scopus: 2-s2.0-83955165877
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Abramović, Biljana AU - Kler, Sanja AU - Šojić, Daniela AU - Laušević, Mila AU - Radović, Tanja AU - Vione, Davide PY - 2011 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5653 AB - This study investigates the efficiency of the photocatalytic degradation of metoprolol tartrate (MET), a widely used β 1-blocker, in TiO 2 suspensions of Wackherr's " Oxyde de titane standard" and Degussa P25. The study encompasses transformation kinetics and efficiency, identification of intermediates and reaction pathways. In the investigated range of initial concentrations (0.01-0.1mM), the photocatalytic degradation of MET in the first stage of the reaction followed approximately a pseudo-first order kinetics. The TiO 2 Wackherr induced a significantly faster MET degradation compared to TiO 2 Degussa P25 when relatively high substrate concentrations were used. By examining the effect of ethanol as a scavenger of hydroxyl radicals (OH), it was shown that the reaction with OH played the main role in the photocatalytic degradation of MET. After 240min of irradiation the reaction intermediates were almost completely mineralized to CO 2 and H 2O, while the nitrogen was predominantly present as NH4+. Reaction intermediates were studied in detail and a number of them were identified using LC-MS/MS (ESI+), which allowed the proposal of a tentative pathway for the photocatalytic transformation of MET as a function of the TiO 2 specimen. PB - Elsevier T2 - Journal of Hazardous Materials T1 - Photocatalytic degradation of metoprolol tartrate in suspensions of two TiO 2-based photocatalysts with different surface area. Identification of intermediates and proposal of degradation pathways EP - 132 SP - 123 VL - 198 DO - 10.1016/j.jhazmat.2011.10.017 ER -
@article{ author = "Abramović, Biljana and Kler, Sanja and Šojić, Daniela and Laušević, Mila and Radović, Tanja and Vione, Davide", year = "2011", abstract = "This study investigates the efficiency of the photocatalytic degradation of metoprolol tartrate (MET), a widely used β 1-blocker, in TiO 2 suspensions of Wackherr's " Oxyde de titane standard" and Degussa P25. The study encompasses transformation kinetics and efficiency, identification of intermediates and reaction pathways. In the investigated range of initial concentrations (0.01-0.1mM), the photocatalytic degradation of MET in the first stage of the reaction followed approximately a pseudo-first order kinetics. The TiO 2 Wackherr induced a significantly faster MET degradation compared to TiO 2 Degussa P25 when relatively high substrate concentrations were used. By examining the effect of ethanol as a scavenger of hydroxyl radicals (OH), it was shown that the reaction with OH played the main role in the photocatalytic degradation of MET. After 240min of irradiation the reaction intermediates were almost completely mineralized to CO 2 and H 2O, while the nitrogen was predominantly present as NH4+. Reaction intermediates were studied in detail and a number of them were identified using LC-MS/MS (ESI+), which allowed the proposal of a tentative pathway for the photocatalytic transformation of MET as a function of the TiO 2 specimen.", publisher = "Elsevier", journal = "Journal of Hazardous Materials", title = "Photocatalytic degradation of metoprolol tartrate in suspensions of two TiO 2-based photocatalysts with different surface area. Identification of intermediates and proposal of degradation pathways", pages = "132-123", volume = "198", doi = "10.1016/j.jhazmat.2011.10.017" }
Abramović, B., Kler, S., Šojić, D., Laušević, M., Radović, T.,& Vione, D.. (2011). Photocatalytic degradation of metoprolol tartrate in suspensions of two TiO 2-based photocatalysts with different surface area. Identification of intermediates and proposal of degradation pathways. in Journal of Hazardous Materials Elsevier., 198, 123-132. https://doi.org/10.1016/j.jhazmat.2011.10.017
Abramović B, Kler S, Šojić D, Laušević M, Radović T, Vione D. Photocatalytic degradation of metoprolol tartrate in suspensions of two TiO 2-based photocatalysts with different surface area. Identification of intermediates and proposal of degradation pathways. in Journal of Hazardous Materials. 2011;198:123-132. doi:10.1016/j.jhazmat.2011.10.017 .
Abramović, Biljana, Kler, Sanja, Šojić, Daniela, Laušević, Mila, Radović, Tanja, Vione, Davide, "Photocatalytic degradation of metoprolol tartrate in suspensions of two TiO 2-based photocatalysts with different surface area. Identification of intermediates and proposal of degradation pathways" in Journal of Hazardous Materials, 198 (2011):123-132, https://doi.org/10.1016/j.jhazmat.2011.10.017 . .