A novel approach in revealing mechanisms and particular step predictors of pH dependent tartrazine catalytic degradation in presence of Oxone®
Само за регистроване кориснике
2021
Аутори
Popadić, MarkoMarinović, Sanja
Mudrinić, Tihana
Milutinović Nikolić, Aleksandra
Banković, Predrag
Đorđević, Ivana
Janjić, Goran
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The degradation of tartrazine in the presence of cobalt activated Oxone® (potassium peroxymonosulfate) was investigated at different initial pH values. Aluminum pillared clay had the role of a support for catalytically active cobalt oxide species. The degradation of tartrazine and the formation of a mixture of degradation products were monitored using the Ultraviolet–Visible (UV–Vis) spectroscopy and gas chromatography–mass spectrometry (GC-MS). The exact qualitative composition of this mixture and the determination of the most probable mechanism of degradation (the primary goal) were obtained using GC-MS. Besides, the main reaction pathway (reaction with SO4˙ˉ radical anion) and secondary pathways were proposed depending on the pH value. At pH = 6 the reaction with HO˙ radical was proposed. At pH = 11 decarboxilation was suggested as the first step of the secondary proposed reaction pathway. The combination of results acquired from the deconvolution of UV–Vis spectra and the theoretic...al UV–Vis spectra of degradation products, whose occurrence was predicted by quantum-chemical calculations, was proven to be beneficial for the identification of tartrazine degradation products and for defining UV–Vis predictors of particular degradation steps. An additional contribution of this paper, from the reactivity aspect, was the establishment of the critical structural demand for the radical degradation of any diazo compound. The existence of a hydrogen atom bound to a diazo group was found to be the essential prerequisite for the radical cleavage of diazo compounds.
Кључне речи:
Advanced oxidation processes / Tartrazine / Oxone® / DFT / UV–Vis / GC-MSИзвор:
Chemosphere, 2021, 281, 130806-Издавач:
- Elsevier
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200026 (Универзитет у Београду, Институт за хемију, технологију и металургију - ИХТМ) (RS-MESTD-inst-2020-200026)
DOI: 10.1016/j.chemosphere.2021.130806
ISSN: 0045-6535
PubMed: 34004519
WoS: 000665491400044
Scopus: 2-s2.0-85105787075
Институција/група
IHTMTY - JOUR AU - Popadić, Marko AU - Marinović, Sanja AU - Mudrinić, Tihana AU - Milutinović Nikolić, Aleksandra AU - Banković, Predrag AU - Đorđević, Ivana AU - Janjić, Goran PY - 2021 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4728 AB - The degradation of tartrazine in the presence of cobalt activated Oxone® (potassium peroxymonosulfate) was investigated at different initial pH values. Aluminum pillared clay had the role of a support for catalytically active cobalt oxide species. The degradation of tartrazine and the formation of a mixture of degradation products were monitored using the Ultraviolet–Visible (UV–Vis) spectroscopy and gas chromatography–mass spectrometry (GC-MS). The exact qualitative composition of this mixture and the determination of the most probable mechanism of degradation (the primary goal) were obtained using GC-MS. Besides, the main reaction pathway (reaction with SO4˙ˉ radical anion) and secondary pathways were proposed depending on the pH value. At pH = 6 the reaction with HO˙ radical was proposed. At pH = 11 decarboxilation was suggested as the first step of the secondary proposed reaction pathway. The combination of results acquired from the deconvolution of UV–Vis spectra and the theoretical UV–Vis spectra of degradation products, whose occurrence was predicted by quantum-chemical calculations, was proven to be beneficial for the identification of tartrazine degradation products and for defining UV–Vis predictors of particular degradation steps. An additional contribution of this paper, from the reactivity aspect, was the establishment of the critical structural demand for the radical degradation of any diazo compound. The existence of a hydrogen atom bound to a diazo group was found to be the essential prerequisite for the radical cleavage of diazo compounds. PB - Elsevier T2 - Chemosphere T1 - A novel approach in revealing mechanisms and particular step predictors of pH dependent tartrazine catalytic degradation in presence of Oxone® VL - 281 SP - 130806 DO - 10.1016/j.chemosphere.2021.130806 ER -
@article{ author = "Popadić, Marko and Marinović, Sanja and Mudrinić, Tihana and Milutinović Nikolić, Aleksandra and Banković, Predrag and Đorđević, Ivana and Janjić, Goran", year = "2021", abstract = "The degradation of tartrazine in the presence of cobalt activated Oxone® (potassium peroxymonosulfate) was investigated at different initial pH values. Aluminum pillared clay had the role of a support for catalytically active cobalt oxide species. The degradation of tartrazine and the formation of a mixture of degradation products were monitored using the Ultraviolet–Visible (UV–Vis) spectroscopy and gas chromatography–mass spectrometry (GC-MS). The exact qualitative composition of this mixture and the determination of the most probable mechanism of degradation (the primary goal) were obtained using GC-MS. Besides, the main reaction pathway (reaction with SO4˙ˉ radical anion) and secondary pathways were proposed depending on the pH value. At pH = 6 the reaction with HO˙ radical was proposed. At pH = 11 decarboxilation was suggested as the first step of the secondary proposed reaction pathway. The combination of results acquired from the deconvolution of UV–Vis spectra and the theoretical UV–Vis spectra of degradation products, whose occurrence was predicted by quantum-chemical calculations, was proven to be beneficial for the identification of tartrazine degradation products and for defining UV–Vis predictors of particular degradation steps. An additional contribution of this paper, from the reactivity aspect, was the establishment of the critical structural demand for the radical degradation of any diazo compound. The existence of a hydrogen atom bound to a diazo group was found to be the essential prerequisite for the radical cleavage of diazo compounds.", publisher = "Elsevier", journal = "Chemosphere", title = "A novel approach in revealing mechanisms and particular step predictors of pH dependent tartrazine catalytic degradation in presence of Oxone®", volume = "281", pages = "130806", doi = "10.1016/j.chemosphere.2021.130806" }
Popadić, M., Marinović, S., Mudrinić, T., Milutinović Nikolić, A., Banković, P., Đorđević, I.,& Janjić, G.. (2021). A novel approach in revealing mechanisms and particular step predictors of pH dependent tartrazine catalytic degradation in presence of Oxone®. in Chemosphere Elsevier., 281, 130806. https://doi.org/10.1016/j.chemosphere.2021.130806
Popadić M, Marinović S, Mudrinić T, Milutinović Nikolić A, Banković P, Đorđević I, Janjić G. A novel approach in revealing mechanisms and particular step predictors of pH dependent tartrazine catalytic degradation in presence of Oxone®. in Chemosphere. 2021;281:130806. doi:10.1016/j.chemosphere.2021.130806 .
Popadić, Marko, Marinović, Sanja, Mudrinić, Tihana, Milutinović Nikolić, Aleksandra, Banković, Predrag, Đorđević, Ivana, Janjić, Goran, "A novel approach in revealing mechanisms and particular step predictors of pH dependent tartrazine catalytic degradation in presence of Oxone®" in Chemosphere, 281 (2021):130806, https://doi.org/10.1016/j.chemosphere.2021.130806 . .