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Banković Predrag - One of the best experts on this subject based on the ideXlab platform.
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Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation
Elsevier, 2019Co-Authors: Marković Marija, Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Jović-jovičić Nataša, Ajduković Marija, Mojović Zorica, Orlić Jovana, Banković PredragAbstract:Aluminum pillared clay was synthesized and impregnated with Co2+ (CoAP), using incipient wetness impregnation method. The obtained CoAP was characterized by chemical analysis, XRPD, SEM with EDS, XPS and low temperature N2 physisorption. By these methods the incorporation of Co2+ was confirmed in both micro and mesoporous region. The synthesized material was investigated as a catalyst in catalytic oxidation of organic water pollutants – dyes – in the presence of Oxone® (peroxymonosulfate). Oxone® is a precursor of sulfate radicals. Tartrazine was chosen as a model dye pollutant. The influence of the mass of the catalyst, temperature and initial pH was investigated. Temperature increase was beneficial for dye degradation rate. The reaction rate was the highest for initial pH values around those corresponding to neutral conditions, somewhat slower for pH 10 decolorization was significantly less expressed. Along with decolorization of Tartrazine solution the formation and degradation of Tartrazine catalytic oxidation products were monitored using UV–Vis spectroscopy. CoAP was found to be efficient catalyst in Oxone® induced catalytic degradation of both Tartrazine and detected products of its degradation
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Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation
2019Co-Authors: Marković Marija, Mudrinić Tihana, Marinović Sanja, Jović-jovičić Nataša, Ajduković Marija, Orlić Jovana, Mojović, Zorica D., Milutinović-nikolić, Aleksandra D., Banković PredragAbstract:Aluminum pillared clay was synthesized and impregnated with Co2+ (CoAP), using incipient wetness impregnation method. The obtained CoAP was characterized by chemical analysis, XRPD, SEM with EDS, XPS and low temperature N2 physisorption. By these methods the incorporation of Co2+ was confirmed in both micro and mesoporous region. The synthesized material was investigated as a catalyst in catalytic oxidation of organic water pollutants – dyes – in the presence of Oxone® (peroxymonosulfate). Oxone® is a precursor of sulfate radicals. Tartrazine was chosen as a model dye pollutant. The influence of the mass of the catalyst, temperature and initial pH was investigated. Temperature increase was beneficial for dye degradation rate. The reaction rate was the highest for initial pH values around those corresponding to neutral conditions, somewhat slower for pH 10 decolorization was significantly less expressed. Along with decolorization of Tartrazine solution the formation and degradation of Tartrazine catalytic oxidation products were monitored using UV–Vis spectroscopy. CoAP was found to be efficient catalyst in Oxone® induced catalytic degradation of both Tartrazine and detected products of its degradation.Supplementary material: [http://cherry.chem.bg.ac.rs/handle/123456789/3375
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Cobalt impregnated pillared montmorillonite in the peroxymonosulfate induced catalytic oxidation of Tartrazine
'Springer Science and Business Media LLC', 2018Co-Authors: Marković Maja, Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Ajduković Marija, Mojović Zorica, Banković PredragAbstract:Aluminum pillared montmorillonite impregnated with cobalt (CoAP) was synthe-sized and characterized using chemical analysis, XRD and N-2-physisorption. CoAP was tested as a catalyst in the peroxymonosulfate (Oxone (R)) induced catalytic degradation of Tartrazine. The influence of Oxone (R)/catalyst ratio and temperature on CoAP catalytic performance was investigated. The UV-Vis spectra obtained after predetermined periods of time of reaction were analyzed in order for Tartrazine solution composition to be monitored. The reaction was more efficient at 50 degrees C than at 30 degrees C and the presence of new peaks for the reaction at 50 degrees C was observed. The peaks were deconvoluted and further analyzed. The intensity of two characteristic peaks gradually decreased during the investigated reaction following the first order kinetics. Newly formed peaks indicated the formation of degradation products. The initial increase of the intensity of some of them was followed by certain decrease as the reaction proceeded. CoAP was found to be efficient catalyst in Oxone (R) induced catalytic decolorization of Tartrazine. The degradation of different products formed in Tartrazine oxidation was evidenced
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Cobalt impregnated pillared montmorillonite in the peroxymonosulfate induced catalytic oxidation of Tartrazine
Springer Netherlands, 2018Co-Authors: Marković M., Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Ajduković Marija, Mojović Zorica, Banković PredragAbstract:Aluminum pillared montmorillonite impregnated with cobalt (CoAP) was synthesized and characterized using chemical analysis, XRD and N2-physisorption. CoAP was tested as a catalyst in the peroxymonosulfate (Oxone®) induced catalytic degradation of Tartrazine. The influence of Oxone®/catalyst ratio and temperature on CoAP catalytic performance was investigated. The UV–Vis spectra obtained after predetermined periods of time of reaction were analyzed in order for Tartrazine solution composition to be monitored. The reaction was more efficient at 50 °C than at 30 °C and the presence of new peaks for the reaction at 50 °C was observed. The peaks were deconvoluted and further analyzed. The intensity of two characteristic peaks gradually decreased during the investigated reaction following the first order kinetics. Newly formed peaks indicated the formation of degradation products. The initial increase of the intensity of some of them was followed by certain decrease as the reaction proceeded. CoAP was found to be efficient catalyst in Oxone® induced catalytic decolorization of Tartrazine. The degradation of different products formed in Tartrazine oxidation was evidenced
Demir Selcuk - One of the best experts on this subject based on the ideXlab platform.
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Determination of color additive Tartrazine (E 102) in food samples after dispersive solid phase extraction with a zirconium-based metal-organic framework (UiO-66(Zr)-(COOH)(2))
'Informa UK Limited', 2020Co-Authors: TokalioĞlu Şerİfe, Cam Safak, Oymak TÜlay, Demir SelcukAbstract:A new and rapid dispersive solid phase extraction method by using a green-synthesised UiO-66(Zr)-(COOH)(2) (Zr-BTeC) adsorbent with body-centred cubic (bcu) topology was developed for determination of Tartrazine in food samples. Zr-BTeC was used for the first time as an adsorbent for Tartrazine. It was synthesised and characterised by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, Brunauer-Emmett-Teller surface area analysis, and zeta potential measurements. Tartrazine was determined at 405 nm spectrophotometrically. Experimental conditions were optimised in order to achieve quantitative recoveries. The sample acidity was found to be 0.02 mol L-1 HCl. The amount of Zr-BTeC was 10 mg. Both adsorption and elution contact times were only 5 s without the need for vortexing. Elution was with 2 mL of 0.5 mol L-1 NH3. A sample volume of 45 mL was selected as optimum. The adsorption capacity for Tartrazine with Zr-BTeC was found to be 185 mg g(-1) and the adsorbent was reusable up to 40 cycles. The Tartrazine concentrations found by the developed method in food supplements were compared with the results obtained by HPLC method for the same samples. Statistical analysis results showed that there are insignificant differences between the results of the two methods (p = .05). The method was successfully applied to the determination of Tartrazine in spiked chewing gums, lemon flavoured icing glaze, and jelly samples
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Determination of color additive Tartrazine (E 102) in food samples after dispersive solid phase extraction with a zirconium-based metal-organic framework (UiO-66(Zr)-(COOH)(2))
'Informa UK Limited', 2020Co-Authors: Oymak TÜlay, TokalioĞlu Şerİfe, Cam Safak, Demir SelcukAbstract:Demir, Selcuk/0000-0002-5719-7145WOS: 000515051900001PubMed: 32083510A new and rapid dispersive solid phase extraction method by using a green-synthesised UiO-66(Zr)-(COOH)(2) (Zr-BTeC) adsorbent with body-centred cubic (bcu) topology was developed for determination of Tartrazine in food samples. Zr-BTeC was used for the first time as an adsorbent for Tartrazine. It was synthesised and characterised by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, Brunauer-Emmett-Teller surface area analysis, and zeta potential measurements. Tartrazine was determined at 405 nm spectrophotometrically. Experimental conditions were optimised in order to achieve quantitative recoveries. the sample acidity was found to be 0.02 mol L-1 HCl. the amount of Zr-BTeC was 10 mg. Both adsorption and elution contact times were only 5 s without the need for vortexing. Elution was with 2 mL of 0.5 mol L-1 NH3. A sample volume of 45 mL was selected as optimum. the adsorption capacity for Tartrazine with Zr-BTeC was found to be 185 mg g(-1) and the adsorbent was reusable up to 40 cycles. the Tartrazine concentrations found by the developed method in food supplements were compared with the results obtained by HPLC method for the same samples. Statistical analysis results showed that there are insignificant differences between the results of the two methods (p = .05). the method was successfully applied to the determination of Tartrazine in spiked chewing gums, lemon flavoured icing glaze, and jelly samples
Pranav S. Shrivastav - One of the best experts on this subject based on the ideXlab platform.
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Performance Evaluation and Thermodynamic Studies for the Simultaneous Cloud Point Extraction of Erythrosine and Tartrazine Using Mixed Micelles in Food Samples
Food Analytical Methods, 2017Co-Authors: Anargha P. Nambiar, Mallika Sanyal, Pranav S. ShrivastavAbstract:The present method describes simultaneous determination of erythrosine and Tartrazine after cloud point extraction using mixed micelles. The coacervate phase containing the analytes was determined spectrophotometrically by measuring the absorbance at 525 and 425 nm for erythrosine and Tartrazine, respectively. Different parameters such as pH, concentration of nonionic (Triton X-100) and cationic surfactant (cetyl trimethyl ammonium bromide (CTAB)), electrolyte concentration, temperature, and incubation time were suitably optimized. Among the various parameters studied, pH and the nature of surfactants played a major role in efficient cloud point extraction of the analytes. A mixture of Triton X-100 and CTAB provided adequate separation efficiency, with enrichment factor of 45.22 and 71.15 for erythrosine and Tartrazine, respectively. The method was found to be linear in the concentration range of 0.04–4.00 μg mL^−1 for erythrosine and 0.05–5.00 μg mL^−1 for Tartrazine. The limit of detection and limit of quantitation obtained were 11.24 and 37.19 μg L^−1 for erythrosine and 13.33 and 44.27 μg L^−1 for Tartrazine, respectively. The recovery of these dyes from spiked food samples ranged from 96.5–103.9%. Considering a homogenous monolayer adsorption in the phase separation, Langmuir isotherm model was applied. Thermodynamic parameters such as free energy, enthalpy, and entropy were determined from the plot of solubilization affinity against the reciprocal of temperature. The effect of cations, anions, salts, and some food colorants on the determination of erythrosine and Tartrazine was also studied. To demonstrate method applicability, erythrosine and Tartrazine were determined in fruit jelly, fruit candy, and fruit syrup samples.
Mudrinić Tihana - One of the best experts on this subject based on the ideXlab platform.
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Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation
Elsevier, 2019Co-Authors: Marković Marija, Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Jović-jovičić Nataša, Ajduković Marija, Mojović Zorica, Orlić Jovana, Banković PredragAbstract:Aluminum pillared clay was synthesized and impregnated with Co2+ (CoAP), using incipient wetness impregnation method. The obtained CoAP was characterized by chemical analysis, XRPD, SEM with EDS, XPS and low temperature N2 physisorption. By these methods the incorporation of Co2+ was confirmed in both micro and mesoporous region. The synthesized material was investigated as a catalyst in catalytic oxidation of organic water pollutants – dyes – in the presence of Oxone® (peroxymonosulfate). Oxone® is a precursor of sulfate radicals. Tartrazine was chosen as a model dye pollutant. The influence of the mass of the catalyst, temperature and initial pH was investigated. Temperature increase was beneficial for dye degradation rate. The reaction rate was the highest for initial pH values around those corresponding to neutral conditions, somewhat slower for pH 10 decolorization was significantly less expressed. Along with decolorization of Tartrazine solution the formation and degradation of Tartrazine catalytic oxidation products were monitored using UV–Vis spectroscopy. CoAP was found to be efficient catalyst in Oxone® induced catalytic degradation of both Tartrazine and detected products of its degradation
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Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation
2019Co-Authors: Marković Marija, Mudrinić Tihana, Marinović Sanja, Jović-jovičić Nataša, Ajduković Marija, Orlić Jovana, Mojović, Zorica D., Milutinović-nikolić, Aleksandra D., Banković PredragAbstract:Aluminum pillared clay was synthesized and impregnated with Co2+ (CoAP), using incipient wetness impregnation method. The obtained CoAP was characterized by chemical analysis, XRPD, SEM with EDS, XPS and low temperature N2 physisorption. By these methods the incorporation of Co2+ was confirmed in both micro and mesoporous region. The synthesized material was investigated as a catalyst in catalytic oxidation of organic water pollutants – dyes – in the presence of Oxone® (peroxymonosulfate). Oxone® is a precursor of sulfate radicals. Tartrazine was chosen as a model dye pollutant. The influence of the mass of the catalyst, temperature and initial pH was investigated. Temperature increase was beneficial for dye degradation rate. The reaction rate was the highest for initial pH values around those corresponding to neutral conditions, somewhat slower for pH 10 decolorization was significantly less expressed. Along with decolorization of Tartrazine solution the formation and degradation of Tartrazine catalytic oxidation products were monitored using UV–Vis spectroscopy. CoAP was found to be efficient catalyst in Oxone® induced catalytic degradation of both Tartrazine and detected products of its degradation.Supplementary material: [http://cherry.chem.bg.ac.rs/handle/123456789/3375
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Cobalt impregnated pillared montmorillonite in the peroxymonosulfate induced catalytic oxidation of Tartrazine
'Springer Science and Business Media LLC', 2018Co-Authors: Marković Maja, Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Ajduković Marija, Mojović Zorica, Banković PredragAbstract:Aluminum pillared montmorillonite impregnated with cobalt (CoAP) was synthe-sized and characterized using chemical analysis, XRD and N-2-physisorption. CoAP was tested as a catalyst in the peroxymonosulfate (Oxone (R)) induced catalytic degradation of Tartrazine. The influence of Oxone (R)/catalyst ratio and temperature on CoAP catalytic performance was investigated. The UV-Vis spectra obtained after predetermined periods of time of reaction were analyzed in order for Tartrazine solution composition to be monitored. The reaction was more efficient at 50 degrees C than at 30 degrees C and the presence of new peaks for the reaction at 50 degrees C was observed. The peaks were deconvoluted and further analyzed. The intensity of two characteristic peaks gradually decreased during the investigated reaction following the first order kinetics. Newly formed peaks indicated the formation of degradation products. The initial increase of the intensity of some of them was followed by certain decrease as the reaction proceeded. CoAP was found to be efficient catalyst in Oxone (R) induced catalytic decolorization of Tartrazine. The degradation of different products formed in Tartrazine oxidation was evidenced
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Cobalt impregnated pillared montmorillonite in the peroxymonosulfate induced catalytic oxidation of Tartrazine
Springer Netherlands, 2018Co-Authors: Marković M., Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Ajduković Marija, Mojović Zorica, Banković PredragAbstract:Aluminum pillared montmorillonite impregnated with cobalt (CoAP) was synthesized and characterized using chemical analysis, XRD and N2-physisorption. CoAP was tested as a catalyst in the peroxymonosulfate (Oxone®) induced catalytic degradation of Tartrazine. The influence of Oxone®/catalyst ratio and temperature on CoAP catalytic performance was investigated. The UV–Vis spectra obtained after predetermined periods of time of reaction were analyzed in order for Tartrazine solution composition to be monitored. The reaction was more efficient at 50 °C than at 30 °C and the presence of new peaks for the reaction at 50 °C was observed. The peaks were deconvoluted and further analyzed. The intensity of two characteristic peaks gradually decreased during the investigated reaction following the first order kinetics. Newly formed peaks indicated the formation of degradation products. The initial increase of the intensity of some of them was followed by certain decrease as the reaction proceeded. CoAP was found to be efficient catalyst in Oxone® induced catalytic decolorization of Tartrazine. The degradation of different products formed in Tartrazine oxidation was evidenced
Ajduković Marija - One of the best experts on this subject based on the ideXlab platform.
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Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation
Elsevier, 2019Co-Authors: Marković Marija, Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Jović-jovičić Nataša, Ajduković Marija, Mojović Zorica, Orlić Jovana, Banković PredragAbstract:Aluminum pillared clay was synthesized and impregnated with Co2+ (CoAP), using incipient wetness impregnation method. The obtained CoAP was characterized by chemical analysis, XRPD, SEM with EDS, XPS and low temperature N2 physisorption. By these methods the incorporation of Co2+ was confirmed in both micro and mesoporous region. The synthesized material was investigated as a catalyst in catalytic oxidation of organic water pollutants – dyes – in the presence of Oxone® (peroxymonosulfate). Oxone® is a precursor of sulfate radicals. Tartrazine was chosen as a model dye pollutant. The influence of the mass of the catalyst, temperature and initial pH was investigated. Temperature increase was beneficial for dye degradation rate. The reaction rate was the highest for initial pH values around those corresponding to neutral conditions, somewhat slower for pH 10 decolorization was significantly less expressed. Along with decolorization of Tartrazine solution the formation and degradation of Tartrazine catalytic oxidation products were monitored using UV–Vis spectroscopy. CoAP was found to be efficient catalyst in Oxone® induced catalytic degradation of both Tartrazine and detected products of its degradation
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Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation
2019Co-Authors: Marković Marija, Mudrinić Tihana, Marinović Sanja, Jović-jovičić Nataša, Ajduković Marija, Orlić Jovana, Mojović, Zorica D., Milutinović-nikolić, Aleksandra D., Banković PredragAbstract:Aluminum pillared clay was synthesized and impregnated with Co2+ (CoAP), using incipient wetness impregnation method. The obtained CoAP was characterized by chemical analysis, XRPD, SEM with EDS, XPS and low temperature N2 physisorption. By these methods the incorporation of Co2+ was confirmed in both micro and mesoporous region. The synthesized material was investigated as a catalyst in catalytic oxidation of organic water pollutants – dyes – in the presence of Oxone® (peroxymonosulfate). Oxone® is a precursor of sulfate radicals. Tartrazine was chosen as a model dye pollutant. The influence of the mass of the catalyst, temperature and initial pH was investigated. Temperature increase was beneficial for dye degradation rate. The reaction rate was the highest for initial pH values around those corresponding to neutral conditions, somewhat slower for pH 10 decolorization was significantly less expressed. Along with decolorization of Tartrazine solution the formation and degradation of Tartrazine catalytic oxidation products were monitored using UV–Vis spectroscopy. CoAP was found to be efficient catalyst in Oxone® induced catalytic degradation of both Tartrazine and detected products of its degradation.Supplementary material: [http://cherry.chem.bg.ac.rs/handle/123456789/3375
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Cobalt impregnated pillared montmorillonite in the peroxymonosulfate induced catalytic oxidation of Tartrazine
'Springer Science and Business Media LLC', 2018Co-Authors: Marković Maja, Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Ajduković Marija, Mojović Zorica, Banković PredragAbstract:Aluminum pillared montmorillonite impregnated with cobalt (CoAP) was synthe-sized and characterized using chemical analysis, XRD and N-2-physisorption. CoAP was tested as a catalyst in the peroxymonosulfate (Oxone (R)) induced catalytic degradation of Tartrazine. The influence of Oxone (R)/catalyst ratio and temperature on CoAP catalytic performance was investigated. The UV-Vis spectra obtained after predetermined periods of time of reaction were analyzed in order for Tartrazine solution composition to be monitored. The reaction was more efficient at 50 degrees C than at 30 degrees C and the presence of new peaks for the reaction at 50 degrees C was observed. The peaks were deconvoluted and further analyzed. The intensity of two characteristic peaks gradually decreased during the investigated reaction following the first order kinetics. Newly formed peaks indicated the formation of degradation products. The initial increase of the intensity of some of them was followed by certain decrease as the reaction proceeded. CoAP was found to be efficient catalyst in Oxone (R) induced catalytic decolorization of Tartrazine. The degradation of different products formed in Tartrazine oxidation was evidenced
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Cobalt impregnated pillared montmorillonite in the peroxymonosulfate induced catalytic oxidation of Tartrazine
Springer Netherlands, 2018Co-Authors: Marković M., Mudrinić Tihana, Marinović Sanja, Milutinović Nikolić Aleksandra, Ajduković Marija, Mojović Zorica, Banković PredragAbstract:Aluminum pillared montmorillonite impregnated with cobalt (CoAP) was synthesized and characterized using chemical analysis, XRD and N2-physisorption. CoAP was tested as a catalyst in the peroxymonosulfate (Oxone®) induced catalytic degradation of Tartrazine. The influence of Oxone®/catalyst ratio and temperature on CoAP catalytic performance was investigated. The UV–Vis spectra obtained after predetermined periods of time of reaction were analyzed in order for Tartrazine solution composition to be monitored. The reaction was more efficient at 50 °C than at 30 °C and the presence of new peaks for the reaction at 50 °C was observed. The peaks were deconvoluted and further analyzed. The intensity of two characteristic peaks gradually decreased during the investigated reaction following the first order kinetics. Newly formed peaks indicated the formation of degradation products. The initial increase of the intensity of some of them was followed by certain decrease as the reaction proceeded. CoAP was found to be efficient catalyst in Oxone® induced catalytic decolorization of Tartrazine. The degradation of different products formed in Tartrazine oxidation was evidenced
