TY  - JOUR
AU  - Ranković, Maja
AU  - Jevremović, Anka
AU  - Janošević-Ležaić, Aleksandra
AU  - Arsenijević, Aleksandar
AU  - Rupar, Jelena
AU  - Dobričić, Vladimir
AU  - Nedić Vasiljević, Bojana
AU  - Gavrilov, Nemanja
AU  - Bajuk-Bogdanović, Danica
AU  - Milojević-Rakić, Maja
PY  - 2023
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/4649
AB  - Acridine and its derivatives (9-chloroacridine and 9-aminoacridine) are investigated here, supported on FAU type zeolite Y, as a delivery system of anticancer agents. FTIR/Raman spectroscopy and electron microscopy revealed successful drug loading on the zeolite surface, while spectrofluorimetry was employed for drug quantification. The effects of the tested compounds on cell viability were evaluated using in vitro methylthiazol-tetrazolium (MTT) colorimetric technique against human colorectal carcinoma (cell line HCT-116) and MRC-5 fibroblasts. Zeolite structure remained unchanged during homogeneous drug impregnation with achieved drug loadings in the 18–21 mg/g range. The highest drug release, in the µM concentration range, with favourable kinetics was established for zeolite-supported 9-aminoacridine. The acridine delivery via zeolite carrier is viewed in terms of solvation energy and zeolite adsorption sites. The cytotoxic effect of supported acridines on HCT-116 cells reveals that the zeolite carrier improves toxicity, while the highest efficiency is displayed by zeolite-impregnated 9-aminoacridine. The 9-aminoacridine delivery via zeolite carrier favours healthy tissue preservation while accompanying increased toxicity toward cancer cells. Cytotoxicity results are well correlated with theoretical modelling and release study, providing promising results for applicative purposes.
PB  - MDPI
T2  - Journal of Functional Biomaterials
T1  - Can Zeolite-Supporting Acridines Boost Their Anticancer Performance?
VL  - 14
IS  - 3
DO  - 10.3390/jfb14030173
ER  - 

@article{
author = "Ranković, Maja and Jevremović, Anka and Janošević-Ležaić, Aleksandra and Arsenijević, Aleksandar and Rupar, Jelena and Dobričić, Vladimir and Nedić Vasiljević, Bojana and Gavrilov, Nemanja and Bajuk-Bogdanović, Danica and Milojević-Rakić, Maja",
year = "2023",
abstract = "Acridine and its derivatives (9-chloroacridine and 9-aminoacridine) are investigated here, supported on FAU type zeolite Y, as a delivery system of anticancer agents. FTIR/Raman spectroscopy and electron microscopy revealed successful drug loading on the zeolite surface, while spectrofluorimetry was employed for drug quantification. The effects of the tested compounds on cell viability were evaluated using in vitro methylthiazol-tetrazolium (MTT) colorimetric technique against human colorectal carcinoma (cell line HCT-116) and MRC-5 fibroblasts. Zeolite structure remained unchanged during homogeneous drug impregnation with achieved drug loadings in the 18–21 mg/g range. The highest drug release, in the µM concentration range, with favourable kinetics was established for zeolite-supported 9-aminoacridine. The acridine delivery via zeolite carrier is viewed in terms of solvation energy and zeolite adsorption sites. The cytotoxic effect of supported acridines on HCT-116 cells reveals that the zeolite carrier improves toxicity, while the highest efficiency is displayed by zeolite-impregnated 9-aminoacridine. The 9-aminoacridine delivery via zeolite carrier favours healthy tissue preservation while accompanying increased toxicity toward cancer cells. Cytotoxicity results are well correlated with theoretical modelling and release study, providing promising results for applicative purposes.",
publisher = "MDPI",
journal = "Journal of Functional Biomaterials",
title = "Can Zeolite-Supporting Acridines Boost Their Anticancer Performance?",
volume = "14",
number = "3",
doi = "10.3390/jfb14030173"
}

Ranković, M., Jevremović, A., Janošević-Ležaić, A., Arsenijević, A., Rupar, J., Dobričić, V., Nedić Vasiljević, B., Gavrilov, N., Bajuk-Bogdanović, D.,& Milojević-Rakić, M.. (2023). Can Zeolite-Supporting Acridines Boost Their Anticancer Performance?. in Journal of Functional Biomaterials
MDPI., 14(3).
https://doi.org/10.3390/jfb14030173

Ranković M, Jevremović A, Janošević-Ležaić A, Arsenijević A, Rupar J, Dobričić V, Nedić Vasiljević B, Gavrilov N, Bajuk-Bogdanović D, Milojević-Rakić M. Can Zeolite-Supporting Acridines Boost Their Anticancer Performance?. in Journal of Functional Biomaterials. 2023;14(3).
doi:10.3390/jfb14030173 .

Ranković, Maja, Jevremović, Anka, Janošević-Ležaić, Aleksandra, Arsenijević, Aleksandar, Rupar, Jelena, Dobričić, Vladimir, Nedić Vasiljević, Bojana, Gavrilov, Nemanja, Bajuk-Bogdanović, Danica, Milojević-Rakić, Maja, "Can Zeolite-Supporting Acridines Boost Their Anticancer Performance?" in Journal of Functional Biomaterials, 14, no. 3 (2023),
https://doi.org/10.3390/jfb14030173 . .

TY  - JOUR
AU  - Jevremović, Anka
AU  - Savić, Marjetka
AU  - Janošević-Ležaić, Aleksandra
AU  - Krstić, Jugoslav
AU  - Gavrilov, Nemanja
AU  - Bajuk-Bogdanović, Danica
AU  - Milojević-Rakić, Maja
AU  - Ćirić-Marjanović, Gordana
PY  - 2023
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/5342
AB  - The environmental application of the carbonized composites of the Zn-containing metal-organic framework MOF-5 and polyaniline (PANI) in its emeraldine salt and base forms (C-(MOF-5/PANI)) was investigated for the first time. Textural properties and particle size distributions revealed that composites are dominantly mesoporous and nanoscale in nature, while Raman spectroscopy revealed the ZnO phase beneath the carbon matrix. Adsorption of pesticide, dye, and metal cation on C-(MOF-5/PANI) composites in aqueous solutions was evaluated and compared with the behavior of the precursor components, carbonized MOF-5 (cMOF), and carbonized PANIs. A lower MOF-5 content in the precursor, a higher specific surface area, and the pore volume of the composites led to improved adsorption performance for acetamiprid (124 mg/g) and Methylene Blue (135 mg/g). The presence of O/N functional groups in composites is essential for the adsorption of nitrogen-rich pollutants through hydrogen bonding with an estimated monolayer capacity twice as high as that of cMOF. The proton exchange accompanying Cd2+ retention was associated with the Zn/Cd ion exchange, and the highest capacity (9.8 mg/g) was observed for the composite synthesized from the precursor with a high MOF-5 content. The multifunctionality of composites was evidenced in mixtures of pollutants where noticeably better performance for Cd2+ removal was found for the composite compared to cMOF. Competitive binding between three pollutants favored the adsorption of pesticide and dye, thereby hindering to some extent the ion exchange necessary for the removal of metal cations. The results emphasize the importance of the PANI form and MOF-5/PANI weight ratio in precursors for the development of surface, porosity, and active sites in C-(MOF-5/PANI) composites, thus guiding their environmental efficiency. The study also demonstrated that C-(MOF-5/PANI) composites retained studied pollutants much better than carbonized precursor PANIs and showed comparable or better adsorption ability than cMOF.
PB  - MDPI
T2  - Polymers
T1  - Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?
VL  - 15
IS  - 22
DO  - 10.3390/polym15224349
ER  - 

@article{
author = "Jevremović, Anka and Savić, Marjetka and Janošević-Ležaić, Aleksandra and Krstić, Jugoslav and Gavrilov, Nemanja and Bajuk-Bogdanović, Danica and Milojević-Rakić, Maja and Ćirić-Marjanović, Gordana",
year = "2023",
abstract = "The environmental application of the carbonized composites of the Zn-containing metal-organic framework MOF-5 and polyaniline (PANI) in its emeraldine salt and base forms (C-(MOF-5/PANI)) was investigated for the first time. Textural properties and particle size distributions revealed that composites are dominantly mesoporous and nanoscale in nature, while Raman spectroscopy revealed the ZnO phase beneath the carbon matrix. Adsorption of pesticide, dye, and metal cation on C-(MOF-5/PANI) composites in aqueous solutions was evaluated and compared with the behavior of the precursor components, carbonized MOF-5 (cMOF), and carbonized PANIs. A lower MOF-5 content in the precursor, a higher specific surface area, and the pore volume of the composites led to improved adsorption performance for acetamiprid (124 mg/g) and Methylene Blue (135 mg/g). The presence of O/N functional groups in composites is essential for the adsorption of nitrogen-rich pollutants through hydrogen bonding with an estimated monolayer capacity twice as high as that of cMOF. The proton exchange accompanying Cd2+ retention was associated with the Zn/Cd ion exchange, and the highest capacity (9.8 mg/g) was observed for the composite synthesized from the precursor with a high MOF-5 content. The multifunctionality of composites was evidenced in mixtures of pollutants where noticeably better performance for Cd2+ removal was found for the composite compared to cMOF. Competitive binding between three pollutants favored the adsorption of pesticide and dye, thereby hindering to some extent the ion exchange necessary for the removal of metal cations. The results emphasize the importance of the PANI form and MOF-5/PANI weight ratio in precursors for the development of surface, porosity, and active sites in C-(MOF-5/PANI) composites, thus guiding their environmental efficiency. The study also demonstrated that C-(MOF-5/PANI) composites retained studied pollutants much better than carbonized precursor PANIs and showed comparable or better adsorption ability than cMOF.",
publisher = "MDPI",
journal = "Polymers",
title = "Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?",
volume = "15",
number = "22",
doi = "10.3390/polym15224349"
}

Jevremović, A., Savić, M., Janošević-Ležaić, A., Krstić, J., Gavrilov, N., Bajuk-Bogdanović, D., Milojević-Rakić, M.,& Ćirić-Marjanović, G.. (2023). Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?. in Polymers
MDPI., 15(22).
https://doi.org/10.3390/polym15224349

Jevremović A, Savić M, Janošević-Ležaić A, Krstić J, Gavrilov N, Bajuk-Bogdanović D, Milojević-Rakić M, Ćirić-Marjanović G. Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?. in Polymers. 2023;15(22).
doi:10.3390/polym15224349 .

Jevremović, Anka, Savić, Marjetka, Janošević-Ležaić, Aleksandra, Krstić, Jugoslav, Gavrilov, Nemanja, Bajuk-Bogdanović, Danica, Milojević-Rakić, Maja, Ćirić-Marjanović, Gordana, "Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?" in Polymers, 15, no. 22 (2023),
https://doi.org/10.3390/polym15224349 . .

TY  - JOUR
AU  - Milojević-Rakić, Maja
AU  - Popadić, Daliborka
AU  - Janošević-Ležaić, Aleksandra
AU  - Jevremović, Anka
AU  - Nedić-Vasiljević, Bojana
AU  - Uskoković-Marković, Snežana
AU  - Bajuk-Bogdanović, Danica
PY  - 2022
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/4062
AB  - Ecotoxicity caused by neonicotinoid pesticides is largely due to oxidative stress on non-target species. Due to the fact that reactive radical species reach the environment, materials intended for pesticide removal should be applicable for the simultaneous removal of reactive radicals, as well. This work uses the spectroscopic, adsorptive and antioxidant responses from MFI, FAU and BEA zeolites as descriptors of their potential environmental importance. Different network structures and Si/Al ratios were correlated with excellent zeolite adsorption properties, as over 200 mg g1 of investigated neonicotinoids, acetamiprid and imidacloprid, was achieved in one cycle. Additionally, after two regeneration steps, over 450 mg g1 adsorbed pesticides were retained, in three adsorption cycles. Overall the best results were detected for the FAU zeotype in both tested applications, insecticide adsorption and radical-scavenging performance, with and without insecticides present. The proposed mechanism for adsorption relies on kinetic investigation, isotherm modelling and spectroscopic post-adsorption analysis and targets zeolite hydroxyl/siloxane groups as active sites for insecticide adsorption via hydrogen bonding. Neat, welldefined zeolite structures enable their prospective application in ecotoxic species removal.
PB  - The Royal Society of Chemistry
T2  - Environmental science. Processes & impacts
T1  - MFI, BEA and FAU zeolite scavenging role in neonicotinoids and radical species elimination
VL  - 24
IS  - 2
SP  - 265
EP  - 276
DO  - 10.1039/d1em00437a
ER  - 

@article{
author = "Milojević-Rakić, Maja and Popadić, Daliborka and Janošević-Ležaić, Aleksandra and Jevremović, Anka and Nedić-Vasiljević, Bojana and Uskoković-Marković, Snežana and Bajuk-Bogdanović, Danica",
year = "2022",
abstract = "Ecotoxicity caused by neonicotinoid pesticides is largely due to oxidative stress on non-target species. Due to the fact that reactive radical species reach the environment, materials intended for pesticide removal should be applicable for the simultaneous removal of reactive radicals, as well. This work uses the spectroscopic, adsorptive and antioxidant responses from MFI, FAU and BEA zeolites as descriptors of their potential environmental importance. Different network structures and Si/Al ratios were correlated with excellent zeolite adsorption properties, as over 200 mg g1 of investigated neonicotinoids, acetamiprid and imidacloprid, was achieved in one cycle. Additionally, after two regeneration steps, over 450 mg g1 adsorbed pesticides were retained, in three adsorption cycles. Overall the best results were detected for the FAU zeotype in both tested applications, insecticide adsorption and radical-scavenging performance, with and without insecticides present. The proposed mechanism for adsorption relies on kinetic investigation, isotherm modelling and spectroscopic post-adsorption analysis and targets zeolite hydroxyl/siloxane groups as active sites for insecticide adsorption via hydrogen bonding. Neat, welldefined zeolite structures enable their prospective application in ecotoxic species removal.",
publisher = "The Royal Society of Chemistry",
journal = "Environmental science. Processes & impacts",
title = "MFI, BEA and FAU zeolite scavenging role in neonicotinoids and radical species elimination",
volume = "24",
number = "2",
pages = "265-276",
doi = "10.1039/d1em00437a"
}

Milojević-Rakić, M., Popadić, D., Janošević-Ležaić, A., Jevremović, A., Nedić-Vasiljević, B., Uskoković-Marković, S.,& Bajuk-Bogdanović, D.. (2022). MFI, BEA and FAU zeolite scavenging role in neonicotinoids and radical species elimination. in Environmental science. Processes & impacts
The Royal Society of Chemistry., 24(2), 265-276.
https://doi.org/10.1039/d1em00437a

Milojević-Rakić M, Popadić D, Janošević-Ležaić A, Jevremović A, Nedić-Vasiljević B, Uskoković-Marković S, Bajuk-Bogdanović D. MFI, BEA and FAU zeolite scavenging role in neonicotinoids and radical species elimination. in Environmental science. Processes & impacts. 2022;24(2):265-276.
doi:10.1039/d1em00437a .

Milojević-Rakić, Maja, Popadić, Daliborka, Janošević-Ležaić, Aleksandra, Jevremović, Anka, Nedić-Vasiljević, Bojana, Uskoković-Marković, Snežana, Bajuk-Bogdanović, Danica, "MFI, BEA and FAU zeolite scavenging role in neonicotinoids and radical species elimination" in Environmental science. Processes & impacts, 24, no. 2 (2022):265-276,
https://doi.org/10.1039/d1em00437a . .

TY  - JOUR
AU  - Janićijević, Dejana
AU  - Jevremović, Anka
AU  - Janošević-Ležaić, Aleksandra
AU  - Nedić-Vasiljević, Bojana
AU  - Uskoković-Marković, Snežana
AU  - Bajuk-Bogdanović, Danica
AU  - Milojević-Rakić, Maja
PY  - 2021
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3970
AB  - Composite materials consisting of the silver salt of dodecatungstophosphoric acid and HBEA zeolite are developed in order to give materials of superior adsorption properties for aqueous pesticide removal. Two-step impregnation and an ion-exchange method with variable constituent mass ratios were employed as synthesis procedures. One of the study goals was to optimize the composite preparation for efficient elimination of glyphosate pesticide and to investigate the modulation of antioxidant activity in the presence of pesticide. Based on comprehensive results, we propose mechanisms for simultaneous glyphosate removal and antioxidant activity. Spectroscopic analysis shows that the applied two-step impregnation method results in advanced composite materials with evenly distributed active sites for glyphosate adsorption and radical-scavenging activity. The original Krishnamurti isotherm is successfully used to fit pesticide adsorption data, pointing to co-operative adsorption of glyphosate on partly saturated adsorbents sites. The amount of glyphosate adsorbed from water suspension was 378 mg per gram of composite material, the highest value reported for glyphosate removal to date.
PB  - Elsevier Ltd
T2  - Journal of Environmental Chemical Engineering
T1  - Comparative assessment of pesticide adsorption capacity and antioxidant activity of Silver Dodecatungstophosphate/HΒEA zeolite composites
VL  - 9
IS  - 6
DO  - 10.1016/j.jece.2021.106341
ER  - 

@article{
author = "Janićijević, Dejana and Jevremović, Anka and Janošević-Ležaić, Aleksandra and Nedić-Vasiljević, Bojana and Uskoković-Marković, Snežana and Bajuk-Bogdanović, Danica and Milojević-Rakić, Maja",
year = "2021",
abstract = "Composite materials consisting of the silver salt of dodecatungstophosphoric acid and HBEA zeolite are developed in order to give materials of superior adsorption properties for aqueous pesticide removal. Two-step impregnation and an ion-exchange method with variable constituent mass ratios were employed as synthesis procedures. One of the study goals was to optimize the composite preparation for efficient elimination of glyphosate pesticide and to investigate the modulation of antioxidant activity in the presence of pesticide. Based on comprehensive results, we propose mechanisms for simultaneous glyphosate removal and antioxidant activity. Spectroscopic analysis shows that the applied two-step impregnation method results in advanced composite materials with evenly distributed active sites for glyphosate adsorption and radical-scavenging activity. The original Krishnamurti isotherm is successfully used to fit pesticide adsorption data, pointing to co-operative adsorption of glyphosate on partly saturated adsorbents sites. The amount of glyphosate adsorbed from water suspension was 378 mg per gram of composite material, the highest value reported for glyphosate removal to date.",
publisher = "Elsevier Ltd",
journal = "Journal of Environmental Chemical Engineering",
title = "Comparative assessment of pesticide adsorption capacity and antioxidant activity of Silver Dodecatungstophosphate/HΒEA zeolite composites",
volume = "9",
number = "6",
doi = "10.1016/j.jece.2021.106341"
}

Janićijević, D., Jevremović, A., Janošević-Ležaić, A., Nedić-Vasiljević, B., Uskoković-Marković, S., Bajuk-Bogdanović, D.,& Milojević-Rakić, M.. (2021). Comparative assessment of pesticide adsorption capacity and antioxidant activity of Silver Dodecatungstophosphate/HΒEA zeolite composites. in Journal of Environmental Chemical Engineering
Elsevier Ltd., 9(6).
https://doi.org/10.1016/j.jece.2021.106341

Janićijević D, Jevremović A, Janošević-Ležaić A, Nedić-Vasiljević B, Uskoković-Marković S, Bajuk-Bogdanović D, Milojević-Rakić M. Comparative assessment of pesticide adsorption capacity and antioxidant activity of Silver Dodecatungstophosphate/HΒEA zeolite composites. in Journal of Environmental Chemical Engineering. 2021;9(6).
doi:10.1016/j.jece.2021.106341 .

Janićijević, Dejana, Jevremović, Anka, Janošević-Ležaić, Aleksandra, Nedić-Vasiljević, Bojana, Uskoković-Marković, Snežana, Bajuk-Bogdanović, Danica, Milojević-Rakić, Maja, "Comparative assessment of pesticide adsorption capacity and antioxidant activity of Silver Dodecatungstophosphate/HΒEA zeolite composites" in Journal of Environmental Chemical Engineering, 9, no. 6 (2021),
https://doi.org/10.1016/j.jece.2021.106341 . .

TY  - JOUR
AU  - Janićijević, Dejana
AU  - Uskoković-Marković, Snežana
AU  - Popa, Alexandru
AU  - Nedić-Vasiljević, Bojana
AU  - Jevremović, Anka
AU  - Milojević-Rakić, Maja
AU  - Bajuk-Bogdanović, Danica
PY  - 2021
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3792
AB  - Heteropolyacids and their salts comprise catalytic centers for the production of ethylene, one of the most important constituents in the chemical industry. The paper emphasizes different synthesis routes of hybrid materials consisting of dodecatungstophosphoric acid silver salt (AgPW) and β zeolite—stepwise wet impregnation, silver-exchange in β zeolite, and dry mixing of precursors. Composite preparation procedures induced minor effects on the weak acid sites, while strong acid sites were increased significantly. β/AgPW composites prepared by two-steps wet impregnation and ion-exchange procedures have strong acid sites content and total acidity higher in comparison to the pure AgPW salt and β zeolite. This is a result of precursors synergetic effect—cumulative strong acidic sites are generated in the presence of well-dispersed Keggin ions on the zeolite network. Composite samples with a higher content of strong acid centers exhibit higher conversion in the ethanol dehydration reaction, i.e., the ion-exchanged βAgPW sample has attained a conversion over 81%, while the wet-impregnated sample has a significant 86%. The distribution and presence of AgPW active phase are found to be crucial for both stable conversion and high selectivity results in ethylene production from ethanol, which is regarded as one of the most significant processes in environmental and sustainable industrial chemistry. Graphic abstract: [Figure not available: see fulltext.]
PB  - Springer Science and Business Media Deutschland GmbH
T2  - Chemical Papers
T1  - The impact of preparation route on the performance of silver dodecatungstophosphate/β zeolite catalysts in the ethylene production
VL  - 75
SP  - 3169
EP  - 3180
DO  - 10.1007/s11696-021-01557-3
ER  - 

@article{
author = "Janićijević, Dejana and Uskoković-Marković, Snežana and Popa, Alexandru and Nedić-Vasiljević, Bojana and Jevremović, Anka and Milojević-Rakić, Maja and Bajuk-Bogdanović, Danica",
year = "2021",
abstract = "Heteropolyacids and their salts comprise catalytic centers for the production of ethylene, one of the most important constituents in the chemical industry. The paper emphasizes different synthesis routes of hybrid materials consisting of dodecatungstophosphoric acid silver salt (AgPW) and β zeolite—stepwise wet impregnation, silver-exchange in β zeolite, and dry mixing of precursors. Composite preparation procedures induced minor effects on the weak acid sites, while strong acid sites were increased significantly. β/AgPW composites prepared by two-steps wet impregnation and ion-exchange procedures have strong acid sites content and total acidity higher in comparison to the pure AgPW salt and β zeolite. This is a result of precursors synergetic effect—cumulative strong acidic sites are generated in the presence of well-dispersed Keggin ions on the zeolite network. Composite samples with a higher content of strong acid centers exhibit higher conversion in the ethanol dehydration reaction, i.e., the ion-exchanged βAgPW sample has attained a conversion over 81%, while the wet-impregnated sample has a significant 86%. The distribution and presence of AgPW active phase are found to be crucial for both stable conversion and high selectivity results in ethylene production from ethanol, which is regarded as one of the most significant processes in environmental and sustainable industrial chemistry. Graphic abstract: [Figure not available: see fulltext.]",
publisher = "Springer Science and Business Media Deutschland GmbH",
journal = "Chemical Papers",
title = "The impact of preparation route on the performance of silver dodecatungstophosphate/β zeolite catalysts in the ethylene production",
volume = "75",
pages = "3169-3180",
doi = "10.1007/s11696-021-01557-3"
}

Janićijević, D., Uskoković-Marković, S., Popa, A., Nedić-Vasiljević, B., Jevremović, A., Milojević-Rakić, M.,& Bajuk-Bogdanović, D.. (2021). The impact of preparation route on the performance of silver dodecatungstophosphate/β zeolite catalysts in the ethylene production. in Chemical Papers
Springer Science and Business Media Deutschland GmbH., 75, 3169-3180.
https://doi.org/10.1007/s11696-021-01557-3

Janićijević D, Uskoković-Marković S, Popa A, Nedić-Vasiljević B, Jevremović A, Milojević-Rakić M, Bajuk-Bogdanović D. The impact of preparation route on the performance of silver dodecatungstophosphate/β zeolite catalysts in the ethylene production. in Chemical Papers. 2021;75:3169-3180.
doi:10.1007/s11696-021-01557-3 .

Janićijević, Dejana, Uskoković-Marković, Snežana, Popa, Alexandru, Nedić-Vasiljević, Bojana, Jevremović, Anka, Milojević-Rakić, Maja, Bajuk-Bogdanović, Danica, "The impact of preparation route on the performance of silver dodecatungstophosphate/β zeolite catalysts in the ethylene production" in Chemical Papers, 75 (2021):3169-3180,
https://doi.org/10.1007/s11696-021-01557-3 . .

TY  - JOUR
AU  - Jevremović, Anka
AU  - Nedić-Vasiljević, Bojana
AU  - Popa, Alexandru
AU  - Uskoković-Marković, Snežana
AU  - Ignjatović, Ljubiša
AU  - Bajuk-Bogdanović, Danica
AU  - Milojević-Rakić, Maja
PY  - 2021
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3783
AB  - Environmental implementation of novel composite materials comprising potassium tungstophosphate (KPW) and ZSM-5 zeolite was tested in ethene production and pesticide removal. The study revealed that the binding of KPW to ZSM-5 zeolites of different Si/Al ratios affects the formation of active centres for catalytic and adsorption processes. Brønsted active sites present in the zeolite framework are synergistically joined with Lewis centres and additional Brønsted centres through the impregnation of potassium tungstophosphate, which resulted in improvement of stability and activity of investigated materials. Adsorption and catalytic performance were found to be influenced by the order of addition of salt precursors and by post-synthesis thermal treatment. The best results found both in ethanol dehydration and nicosulfuron removal were for the same sample of KPW supported at zeolite ZSM-5 (SiO2/Al2O3 = 30). The prominent ethanol conversion of 98% and the highest and most stable selectivity toward ethene were evidenced, along with the capacity of 28.4 mg of targeted pesticide retained per gram of designed KPW/ZSM composite. This comprehensive investigation enabled insight into active site formations in the efficient KPW/ZSM composites. Different approaches to implementation revealed that a lower Si/Al ratio in zeolite promotes efficient K+ exchange, which combined with two-phased in situ preparation of KPW as active phase, evidently leads to the formation of isolated sites of superior activity for both catalytic and adsorptive procedures.
PB  - Elsevier B.V.
T2  - Microporous and Mesoporous Materials
T1  - The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes
VL  - 315
DO  - 10.1016/j.micromeso.2021.110925
ER  - 

@article{
author = "Jevremović, Anka and Nedić-Vasiljević, Bojana and Popa, Alexandru and Uskoković-Marković, Snežana and Ignjatović, Ljubiša and Bajuk-Bogdanović, Danica and Milojević-Rakić, Maja",
year = "2021",
abstract = "Environmental implementation of novel composite materials comprising potassium tungstophosphate (KPW) and ZSM-5 zeolite was tested in ethene production and pesticide removal. The study revealed that the binding of KPW to ZSM-5 zeolites of different Si/Al ratios affects the formation of active centres for catalytic and adsorption processes. Brønsted active sites present in the zeolite framework are synergistically joined with Lewis centres and additional Brønsted centres through the impregnation of potassium tungstophosphate, which resulted in improvement of stability and activity of investigated materials. Adsorption and catalytic performance were found to be influenced by the order of addition of salt precursors and by post-synthesis thermal treatment. The best results found both in ethanol dehydration and nicosulfuron removal were for the same sample of KPW supported at zeolite ZSM-5 (SiO2/Al2O3 = 30). The prominent ethanol conversion of 98% and the highest and most stable selectivity toward ethene were evidenced, along with the capacity of 28.4 mg of targeted pesticide retained per gram of designed KPW/ZSM composite. This comprehensive investigation enabled insight into active site formations in the efficient KPW/ZSM composites. Different approaches to implementation revealed that a lower Si/Al ratio in zeolite promotes efficient K+ exchange, which combined with two-phased in situ preparation of KPW as active phase, evidently leads to the formation of isolated sites of superior activity for both catalytic and adsorptive procedures.",
publisher = "Elsevier B.V.",
journal = "Microporous and Mesoporous Materials",
title = "The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes",
volume = "315",
doi = "10.1016/j.micromeso.2021.110925"
}

Jevremović, A., Nedić-Vasiljević, B., Popa, A., Uskoković-Marković, S., Ignjatović, L., Bajuk-Bogdanović, D.,& Milojević-Rakić, M.. (2021). The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes. in Microporous and Mesoporous Materials
Elsevier B.V.., 315.
https://doi.org/10.1016/j.micromeso.2021.110925

Jevremović A, Nedić-Vasiljević B, Popa A, Uskoković-Marković S, Ignjatović L, Bajuk-Bogdanović D, Milojević-Rakić M. The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes. in Microporous and Mesoporous Materials. 2021;315.
doi:10.1016/j.micromeso.2021.110925 .

Jevremović, Anka, Nedić-Vasiljević, Bojana, Popa, Alexandru, Uskoković-Marković, Snežana, Ignjatović, Ljubiša, Bajuk-Bogdanović, Danica, Milojević-Rakić, Maja, "The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes" in Microporous and Mesoporous Materials, 315 (2021),
https://doi.org/10.1016/j.micromeso.2021.110925 . .

TY  - JOUR
AU  - Janićijević, Dejana
AU  - Uskoković-Marković, Snežana
AU  - Ranković, Dragan
AU  - Milenković, Marina
AU  - Jevremović, Anka
AU  - Nedić-Vasiljević, Bojana
AU  - Milojević-Rakić, Maja
AU  - Bajuk-Bogdanović, Danica
PY  - 2020
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3587
AB  - Novel composites of BEA zeolite and silver tungstophosphate were prepared by different procedures: two-step impregnation, ion-exchange, and as physical mixtures with varying component mass ratios. Composites were characterized using Atomic force microscopy, Infrared, Raman and Atomic absorption spectroscopy, and results were related to adsorption properties and antimicrobial efficiencies of the composites. Prepared samples were tested as antimicrobial agents for fungal and different bacterial strains, as well as for adsorbents for pesticide nicosulfuron in aqueous solutions by using High-performance liquid chromatography. Experimental conditions for batch adsorption testing were optimized in order to efficiently eliminate nicosulfuron from aqueous solutions, while enabling antimicrobial activity of these advanced materials. Antimicrobial efficiency of composites was verified, and indicated that silver ion persistence in the solid phase is of utmost significance for the antimicrobial activity. Spectroscopic investigation revealed interaction of the silver tungstophosphate active phase and the zeolite framework, giving evidence of uniform distribution of active sites in the synthesized materials that proved to be essential for adsorption application. The best obtained adsorption capacity, as well as highest antimicrobial efficiency, is found for composite samples prepared by two-step impregnation with (BEA: silver tungstophosphate) mass ratio 2:1. The amount of nicosulfuron removed from water suspension was 38.2 mg per gram of composite, and the minimum inhibitory concentration determined for all investigated gram-negative bacteria was 125 μg mL−1.
PB  - Elsevier
T2  - Science of the Total Environment
T1  - Double active BEA zeolite/silver tungstophosphates – Antimicrobial effects and pesticide removal
VL  - 735
DO  - 10.1016/j.scitotenv.2020.139530
ER  - 

@article{
author = "Janićijević, Dejana and Uskoković-Marković, Snežana and Ranković, Dragan and Milenković, Marina and Jevremović, Anka and Nedić-Vasiljević, Bojana and Milojević-Rakić, Maja and Bajuk-Bogdanović, Danica",
year = "2020",
abstract = "Novel composites of BEA zeolite and silver tungstophosphate were prepared by different procedures: two-step impregnation, ion-exchange, and as physical mixtures with varying component mass ratios. Composites were characterized using Atomic force microscopy, Infrared, Raman and Atomic absorption spectroscopy, and results were related to adsorption properties and antimicrobial efficiencies of the composites. Prepared samples were tested as antimicrobial agents for fungal and different bacterial strains, as well as for adsorbents for pesticide nicosulfuron in aqueous solutions by using High-performance liquid chromatography. Experimental conditions for batch adsorption testing were optimized in order to efficiently eliminate nicosulfuron from aqueous solutions, while enabling antimicrobial activity of these advanced materials. Antimicrobial efficiency of composites was verified, and indicated that silver ion persistence in the solid phase is of utmost significance for the antimicrobial activity. Spectroscopic investigation revealed interaction of the silver tungstophosphate active phase and the zeolite framework, giving evidence of uniform distribution of active sites in the synthesized materials that proved to be essential for adsorption application. The best obtained adsorption capacity, as well as highest antimicrobial efficiency, is found for composite samples prepared by two-step impregnation with (BEA: silver tungstophosphate) mass ratio 2:1. The amount of nicosulfuron removed from water suspension was 38.2 mg per gram of composite, and the minimum inhibitory concentration determined for all investigated gram-negative bacteria was 125 μg mL−1.",
publisher = "Elsevier",
journal = "Science of the Total Environment",
title = "Double active BEA zeolite/silver tungstophosphates – Antimicrobial effects and pesticide removal",
volume = "735",
doi = "10.1016/j.scitotenv.2020.139530"
}

Janićijević, D., Uskoković-Marković, S., Ranković, D., Milenković, M., Jevremović, A., Nedić-Vasiljević, B., Milojević-Rakić, M.,& Bajuk-Bogdanović, D.. (2020). Double active BEA zeolite/silver tungstophosphates – Antimicrobial effects and pesticide removal. in Science of the Total Environment
Elsevier., 735.
https://doi.org/10.1016/j.scitotenv.2020.139530

Janićijević D, Uskoković-Marković S, Ranković D, Milenković M, Jevremović A, Nedić-Vasiljević B, Milojević-Rakić M, Bajuk-Bogdanović D. Double active BEA zeolite/silver tungstophosphates – Antimicrobial effects and pesticide removal. in Science of the Total Environment. 2020;735.
doi:10.1016/j.scitotenv.2020.139530 .

Janićijević, Dejana, Uskoković-Marković, Snežana, Ranković, Dragan, Milenković, Marina, Jevremović, Anka, Nedić-Vasiljević, Bojana, Milojević-Rakić, Maja, Bajuk-Bogdanović, Danica, "Double active BEA zeolite/silver tungstophosphates – Antimicrobial effects and pesticide removal" in Science of the Total Environment, 735 (2020),
https://doi.org/10.1016/j.scitotenv.2020.139530 . .

TY  - JOUR
AU  - Jevremović, Anka
AU  - Bober, Patrycja
AU  - Mičušík, Matej
AU  - Kuliček, Jaroslav
AU  - Acharya, Udit
AU  - Pfleger, Jiří
AU  - Milojević-Rakić, Maja
AU  - Krajišnik, Danina
AU  - Trchova, Miroslava
AU  - Stejskal, Jaroslav
AU  - Ćirić-Marjanović, Gordana
PY  - 2019
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3248
AB  - Composite materials of BEA zeolite and polyaniline (PANI) were prepared by the chemical oxidative polymerization of aniline in the presence of zeolite in water (without added acid) and in an aqueous solution of sulfuric acid, using ammonium peroxydisulfate as an oxidant. Protonated (as-synthesized) and deprotonated forms of the composites and pristine PANIs were characterized by scanning electron microscopy, conductivity and zeta potential measurements, FTIR, Raman and XPS spectroscopies, and thermogravimetric analysis. Adsorption properties of synthesized materials for removal of nicosulfuron pesticide from aqueous solutions were studied, using HPLC technique. The obtained adsorption isotherms were analyzed using Freundlich and Langmuir-Freundlich equations. Protonated PANI/BEA composites showed excellent adsorption capacity (18.4–25.4 mg g−1), that was higher than the adsorption capacity of pristine BEA zeolite (18.2 mg g−1) but slightly less than neat PANI. Among PANIs, the highest adsorption capacity of 29.8 mg g−1 of adsorbent was found for protonated PANI prepared in sulfuric acid solution. Analysis of adsorption isotherms revealed high degree of surface homogeneity for all prepared composite materials and PANIs. Proposed mechanism for enhanced adsorption of nicosulfuron on protonated composites is based on hydrogen bonding of nicosulfuron O- and N-containing groups with bridging hydroxyls of BEA zeolite and –NH/ = NH+/−NH•+ groups in protonated emeraldine salt form of PANI chains (PANI-ES), accompanied with electrostatic attractive interaction between anionic nicosulfuron species and positive = NH+/−NH•+ groups in bipolaron/polaron containing structures of PANI-ES. Presence of protons in bridging hydroxyls in BEA zeolite and in protonated PANI-ES chains is essential for excellent adsorption of nicosulfuron via hydrogen bonding on all protonated composite samples. In support of this interpretation, deprotonated PANI/BEA composites and deprotonated PANIs showed significantly lower adsorption capacities (in the range 5.5–13.0 mg g−1) compared to those of their protonated counterparts.
PB  - Elsevier B.V.
T2  - Microporous and Mesoporous Materials
T1  - Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption
SP  - 234
EP  - 245
DO  - 10.1016/j.micromeso.2019.06.006
ER  - 

@article{
author = "Jevremović, Anka and Bober, Patrycja and Mičušík, Matej and Kuliček, Jaroslav and Acharya, Udit and Pfleger, Jiří and Milojević-Rakić, Maja and Krajišnik, Danina and Trchova, Miroslava and Stejskal, Jaroslav and Ćirić-Marjanović, Gordana",
year = "2019",
abstract = "Composite materials of BEA zeolite and polyaniline (PANI) were prepared by the chemical oxidative polymerization of aniline in the presence of zeolite in water (without added acid) and in an aqueous solution of sulfuric acid, using ammonium peroxydisulfate as an oxidant. Protonated (as-synthesized) and deprotonated forms of the composites and pristine PANIs were characterized by scanning electron microscopy, conductivity and zeta potential measurements, FTIR, Raman and XPS spectroscopies, and thermogravimetric analysis. Adsorption properties of synthesized materials for removal of nicosulfuron pesticide from aqueous solutions were studied, using HPLC technique. The obtained adsorption isotherms were analyzed using Freundlich and Langmuir-Freundlich equations. Protonated PANI/BEA composites showed excellent adsorption capacity (18.4–25.4 mg g−1), that was higher than the adsorption capacity of pristine BEA zeolite (18.2 mg g−1) but slightly less than neat PANI. Among PANIs, the highest adsorption capacity of 29.8 mg g−1 of adsorbent was found for protonated PANI prepared in sulfuric acid solution. Analysis of adsorption isotherms revealed high degree of surface homogeneity for all prepared composite materials and PANIs. Proposed mechanism for enhanced adsorption of nicosulfuron on protonated composites is based on hydrogen bonding of nicosulfuron O- and N-containing groups with bridging hydroxyls of BEA zeolite and –NH/ = NH+/−NH•+ groups in protonated emeraldine salt form of PANI chains (PANI-ES), accompanied with electrostatic attractive interaction between anionic nicosulfuron species and positive = NH+/−NH•+ groups in bipolaron/polaron containing structures of PANI-ES. Presence of protons in bridging hydroxyls in BEA zeolite and in protonated PANI-ES chains is essential for excellent adsorption of nicosulfuron via hydrogen bonding on all protonated composite samples. In support of this interpretation, deprotonated PANI/BEA composites and deprotonated PANIs showed significantly lower adsorption capacities (in the range 5.5–13.0 mg g−1) compared to those of their protonated counterparts.",
publisher = "Elsevier B.V.",
journal = "Microporous and Mesoporous Materials",
title = "Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption",
pages = "234-245",
doi = "10.1016/j.micromeso.2019.06.006"
}

Jevremović, A., Bober, P., Mičušík, M., Kuliček, J., Acharya, U., Pfleger, J., Milojević-Rakić, M., Krajišnik, D., Trchova, M., Stejskal, J.,& Ćirić-Marjanović, G.. (2019). Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption. in Microporous and Mesoporous Materials
Elsevier B.V.., 234-245.
https://doi.org/10.1016/j.micromeso.2019.06.006

Jevremović A, Bober P, Mičušík M, Kuliček J, Acharya U, Pfleger J, Milojević-Rakić M, Krajišnik D, Trchova M, Stejskal J, Ćirić-Marjanović G. Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption. in Microporous and Mesoporous Materials. 2019;:234-245.
doi:10.1016/j.micromeso.2019.06.006 .

Jevremović, Anka, Bober, Patrycja, Mičušík, Matej, Kuliček, Jaroslav, Acharya, Udit, Pfleger, Jiří, Milojević-Rakić, Maja, Krajišnik, Danina, Trchova, Miroslava, Stejskal, Jaroslav, Ćirić-Marjanović, Gordana, "Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption" in Microporous and Mesoporous Materials (2019):234-245,
https://doi.org/10.1016/j.micromeso.2019.06.006 . .