Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst
Аутори
Stevanović, GordanaJović-Jovičić, Nataša
Krstić, Jugoslav
Marinović, Sanja
Milutinović Nikolić, Aleksandra
Banković, Predrag
Ajduković, Marija
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Catalytic degradation of tartrazine in the presence of Oxone®
was investigated. Oxone was activated by
nanocomposite catalysts consisted of cobalt supported on smectite with chitosan-derived carbon loading. The
catalyst was synthetized using an impregnation-carbonization procedure and NaHCO3 was used as green
porogen. Smectite rich bentonite clay from Bogovina, Serbia was used as started material. After milling,
sieving and hydroseparation the fractions containing particles up to 2 μm in diameter were separated (denoted
as S). The intercalation of chitosan into the smectite was performed according to the previously described
procedure [1]. Obtained chitosan-smectite nanocomposite (Ch-S) was submitted to the wetness impregnation
method by Co2+ ions [1]. The impregnation was performed by slow addition of Co(NO3)2 solution to Ch-S
powder resulting in 0.03 g Co2+ per 1 g of Ch-S. After drying, the sample was mixed with NaHCO3 in a mass
ratio 1:3, placed in a tube furnace and ca...rbonized in a stream of N2 at 500°C for 1 h. The potassium
peroxymonosulfate (Oxone®
, i.e. 2KHSO5∙KHSO4∙K2SO4) was used as a source of sulfate radicals generated by
cobalt from the catalysts. The catalytic activity of the N/Co/cCh-S was compared with catalyst Co/cCh-S
obtained by the same synthesis procedure without activation by NaHCO3. The degradation of tartrazine was
monitored using UV–Vis spectrophotometry at wavelength of 426 nm within 60 minutes. It was found that
N/Co/cCh-S reached 100% of dye degradation after 30 minutes, while degradation in the presence of Co/cCh-S
was 77% for the same reaction time. The results of the catalytic tests were fitted by different kinetic models and
the first-order-kinetic model showed the best correlation. The first-order constant (k1) values for N/Co/cCh-S
and Co/cCh-S were 0.1286 min-1 and 0.0561 min-1, respectively. The results of this study confirmed that the
presence of NaHCO3 in the catalyst synthesis led to increased catalyst activity and accelerated tartrazine
degradation in the presence of Oxone®.
Кључне речи:
Degradation of tartrazine / Oxone / Cobalt supported on smectite with chitosan-derived carbonИзвор:
Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy, 2023, 14, 279-279Издавач:
- Bari, Italy : Digilabs
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)
Институција/група
IHTMTY - CONF AU - Stevanović, Gordana AU - Jović-Jovičić, Nataša AU - Krstić, Jugoslav AU - Marinović, Sanja AU - Milutinović Nikolić, Aleksandra AU - Banković, Predrag AU - Ajduković, Marija PY - 2023 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6436 AB - Catalytic degradation of tartrazine in the presence of Oxone® was investigated. Oxone was activated by nanocomposite catalysts consisted of cobalt supported on smectite with chitosan-derived carbon loading. The catalyst was synthetized using an impregnation-carbonization procedure and NaHCO3 was used as green porogen. Smectite rich bentonite clay from Bogovina, Serbia was used as started material. After milling, sieving and hydroseparation the fractions containing particles up to 2 μm in diameter were separated (denoted as S). The intercalation of chitosan into the smectite was performed according to the previously described procedure [1]. Obtained chitosan-smectite nanocomposite (Ch-S) was submitted to the wetness impregnation method by Co2+ ions [1]. The impregnation was performed by slow addition of Co(NO3)2 solution to Ch-S powder resulting in 0.03 g Co2+ per 1 g of Ch-S. After drying, the sample was mixed with NaHCO3 in a mass ratio 1:3, placed in a tube furnace and carbonized in a stream of N2 at 500°C for 1 h. The potassium peroxymonosulfate (Oxone® , i.e. 2KHSO5∙KHSO4∙K2SO4) was used as a source of sulfate radicals generated by cobalt from the catalysts. The catalytic activity of the N/Co/cCh-S was compared with catalyst Co/cCh-S obtained by the same synthesis procedure without activation by NaHCO3. The degradation of tartrazine was monitored using UV–Vis spectrophotometry at wavelength of 426 nm within 60 minutes. It was found that N/Co/cCh-S reached 100% of dye degradation after 30 minutes, while degradation in the presence of Co/cCh-S was 77% for the same reaction time. The results of the catalytic tests were fitted by different kinetic models and the first-order-kinetic model showed the best correlation. The first-order constant (k1) values for N/Co/cCh-S and Co/cCh-S were 0.1286 min-1 and 0.0561 min-1, respectively. The results of this study confirmed that the presence of NaHCO3 in the catalyst synthesis led to increased catalyst activity and accelerated tartrazine degradation in the presence of Oxone®. PB - Bari, Italy : Digilabs C3 - Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy T1 - Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst VL - 14 SP - 279 EP - 279 UR - https://hdl.handle.net/21.15107/rcub_cer_6436 ER -
@conference{ author = "Stevanović, Gordana and Jović-Jovičić, Nataša and Krstić, Jugoslav and Marinović, Sanja and Milutinović Nikolić, Aleksandra and Banković, Predrag and Ajduković, Marija", year = "2023", abstract = "Catalytic degradation of tartrazine in the presence of Oxone® was investigated. Oxone was activated by nanocomposite catalysts consisted of cobalt supported on smectite with chitosan-derived carbon loading. The catalyst was synthetized using an impregnation-carbonization procedure and NaHCO3 was used as green porogen. Smectite rich bentonite clay from Bogovina, Serbia was used as started material. After milling, sieving and hydroseparation the fractions containing particles up to 2 μm in diameter were separated (denoted as S). The intercalation of chitosan into the smectite was performed according to the previously described procedure [1]. Obtained chitosan-smectite nanocomposite (Ch-S) was submitted to the wetness impregnation method by Co2+ ions [1]. The impregnation was performed by slow addition of Co(NO3)2 solution to Ch-S powder resulting in 0.03 g Co2+ per 1 g of Ch-S. After drying, the sample was mixed with NaHCO3 in a mass ratio 1:3, placed in a tube furnace and carbonized in a stream of N2 at 500°C for 1 h. The potassium peroxymonosulfate (Oxone® , i.e. 2KHSO5∙KHSO4∙K2SO4) was used as a source of sulfate radicals generated by cobalt from the catalysts. The catalytic activity of the N/Co/cCh-S was compared with catalyst Co/cCh-S obtained by the same synthesis procedure without activation by NaHCO3. The degradation of tartrazine was monitored using UV–Vis spectrophotometry at wavelength of 426 nm within 60 minutes. It was found that N/Co/cCh-S reached 100% of dye degradation after 30 minutes, while degradation in the presence of Co/cCh-S was 77% for the same reaction time. The results of the catalytic tests were fitted by different kinetic models and the first-order-kinetic model showed the best correlation. The first-order constant (k1) values for N/Co/cCh-S and Co/cCh-S were 0.1286 min-1 and 0.0561 min-1, respectively. The results of this study confirmed that the presence of NaHCO3 in the catalyst synthesis led to increased catalyst activity and accelerated tartrazine degradation in the presence of Oxone®.", publisher = "Bari, Italy : Digilabs", journal = "Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy", title = "Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst", volume = "14", pages = "279-279", url = "https://hdl.handle.net/21.15107/rcub_cer_6436" }
Stevanović, G., Jović-Jovičić, N., Krstić, J., Marinović, S., Milutinović Nikolić, A., Banković, P.,& Ajduković, M.. (2023). Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst. in Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy Bari, Italy : Digilabs., 14, 279-279. https://hdl.handle.net/21.15107/rcub_cer_6436
Stevanović G, Jović-Jovičić N, Krstić J, Marinović S, Milutinović Nikolić A, Banković P, Ajduković M. Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst. in Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy. 2023;14:279-279. https://hdl.handle.net/21.15107/rcub_cer_6436 .
Stevanović, Gordana, Jović-Jovičić, Nataša, Krstić, Jugoslav, Marinović, Sanja, Milutinović Nikolić, Aleksandra, Banković, Predrag, Ajduković, Marija, "Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst" in Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy, 14 (2023):279-279, https://hdl.handle.net/21.15107/rcub_cer_6436 .