Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM)

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Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (en)
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-68/2020-14/200026 (Univerzitet u Beogradu, Institut za hemiju, tehnologiju i metalurgiju - IHTM) (sr_RS)
Министарство просвете, науке и технолошког развоја Републике Србије, Уговор бр. 451-03-68/2020-14/200026 (Универзитет у Београду, Институт за хемију, технологију и металургију - ИХТМ) (sr)
Authors

Publications

Micromolar Levofloxacin Sensor by Incorporating Highly Crystalline Co3O4 into a Carbon Paste Electrode Structure

Mutić, Tijana; Stanković, Dalibor M.; Manojlović, Dragan; Petrić, Đorđe; Pastor, Ferenc; Avdin, Vyacheslav V.; Ognjanović, Miloš; Stanković, Vesna

(2024)

TY  - JOUR
AU  - Mutić, Tijana
AU  - Stanković, Dalibor M.
AU  - Manojlović, Dragan
AU  - Petrić, Đorđe
AU  - Pastor, Ferenc
AU  - Avdin, Vyacheslav V.
AU  - Ognjanović, Miloš
AU  - Stanković, Vesna
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13122
AB  - In this work, we successfully prepared a modified cobalt oxide (Co3O4) carbon paste electrode to detect Levofloxacin (LEV). By synthesizing Co3O4 nanoparticles through the chemical coprecipitation method, the electrochemical properties of the electrode and LEV were thoroughly investigated using CV, SWV, and EIS, while material properties were scrutinized using ICP-OES, TEM, SEM, and XRD. The results showed that the prepared electrode displayed a better electrocatalytic response than the bare carbon paste electrode. After optimizing SWV, the electrode exhibited a wide linear working range from 1 to 85 μM at pH 5 of BRBS as the supporting electrolyte. The selectivity of the proposed method was satisfactory, with good repeatability and reproducibility, strongly suggesting a potential application for determining LEV in real samples, particularly in pharmaceutical formulations. The practicality of the approach was demonstrated through good recoveries, and the morphology of the materials was found to be closely related to other parameters, indicating that the developed method can provide a cost-effective, rapid, selective, and sensitive means for LEV monitoring. Overall, this project has made significant progress towards developing a reliable method for detecting LEV and has opened up new opportunities for future research in this field.
T2  - Electrochem
T1  - Micromolar Levofloxacin Sensor by Incorporating Highly Crystalline Co3O4 into a Carbon Paste Electrode Structure
VL  - 5
IS  - 1
SP  - 45
EP  - 56
DO  - 10.3390/electrochem5010003
ER  - 
@article{
author = "Mutić, Tijana and Stanković, Dalibor M. and Manojlović, Dragan and Petrić, Đorđe and Pastor, Ferenc and Avdin, Vyacheslav V. and Ognjanović, Miloš and Stanković, Vesna",
year = "2024",
abstract = "In this work, we successfully prepared a modified cobalt oxide (Co3O4) carbon paste electrode to detect Levofloxacin (LEV). By synthesizing Co3O4 nanoparticles through the chemical coprecipitation method, the electrochemical properties of the electrode and LEV were thoroughly investigated using CV, SWV, and EIS, while material properties were scrutinized using ICP-OES, TEM, SEM, and XRD. The results showed that the prepared electrode displayed a better electrocatalytic response than the bare carbon paste electrode. After optimizing SWV, the electrode exhibited a wide linear working range from 1 to 85 μM at pH 5 of BRBS as the supporting electrolyte. The selectivity of the proposed method was satisfactory, with good repeatability and reproducibility, strongly suggesting a potential application for determining LEV in real samples, particularly in pharmaceutical formulations. The practicality of the approach was demonstrated through good recoveries, and the morphology of the materials was found to be closely related to other parameters, indicating that the developed method can provide a cost-effective, rapid, selective, and sensitive means for LEV monitoring. Overall, this project has made significant progress towards developing a reliable method for detecting LEV and has opened up new opportunities for future research in this field.",
journal = "Electrochem",
title = "Micromolar Levofloxacin Sensor by Incorporating Highly Crystalline Co3O4 into a Carbon Paste Electrode Structure",
volume = "5",
number = "1",
pages = "45-56",
doi = "10.3390/electrochem5010003"
}
Mutić, T., Stanković, D. M., Manojlović, D., Petrić, Đ., Pastor, F., Avdin, V. V., Ognjanović, M.,& Stanković, V.. (2024). Micromolar Levofloxacin Sensor by Incorporating Highly Crystalline Co3O4 into a Carbon Paste Electrode Structure. in Electrochem, 5(1), 45-56.
https://doi.org/10.3390/electrochem5010003
Mutić T, Stanković DM, Manojlović D, Petrić Đ, Pastor F, Avdin VV, Ognjanović M, Stanković V. Micromolar Levofloxacin Sensor by Incorporating Highly Crystalline Co3O4 into a Carbon Paste Electrode Structure. in Electrochem. 2024;5(1):45-56.
doi:10.3390/electrochem5010003 .
Mutić, Tijana, Stanković, Dalibor M., Manojlović, Dragan, Petrić, Đorđe, Pastor, Ferenc, Avdin, Vyacheslav V., Ognjanović, Miloš, Stanković, Vesna, "Micromolar Levofloxacin Sensor by Incorporating Highly Crystalline Co3O4 into a Carbon Paste Electrode Structure" in Electrochem, 5, no. 1 (2024):45-56,
https://doi.org/10.3390/electrochem5010003 . .

Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode

Mutić, Tijana; Ognjanović, Miloš; Ivković, Đurđa; Nikolić, Vladimir; Stanković, Vesna; Ristivojević, Petar; Stanković, Dalibor

(2024)

TY  - JOUR
AU  - Mutić, Tijana
AU  - Ognjanović, Miloš
AU  - Ivković, Đurđa
AU  - Nikolić, Vladimir
AU  - Stanković, Vesna
AU  - Ristivojević, Petar
AU  - Stanković, Dalibor
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13031
AB  - In this study, we successfully prepared a modified nickel oxide (NiO) carbon paste electrode to detect gallic acid (GA). NiO nanoparticles were synthesized by the simple, organic solvent-free chemical coprecipitation method, and the electrochemical properties of the electrode and GA were thoroughly investigated using CV, SWV, and EIS, while morphological properties were examined using ICP-OES, TEM, SEM, and XRD. Excellent catalytic characteristics are displayed by the developed material which facilitates the interaction of the target with the electrode surface. The obtained electrochemical information showed that the incorporation of NiO nanoparticles to the carbon paste electrode effectively facilitates electron transfer processes and enriches the catalytic response of the carbon paste electrode. The fabricated NiO/CPE sensor showed a satisfactory linear relationship between peak current and GA concentration in the broad range of 0.2–100 μM and 100–200 μM with a low detection limit of 0.04 μM and limit of quantification of 0.12 μM at pH 3 of BRBS as supporting electrolyte. The selectivity of the proposed method was satisfactory, with acceptable stability, considerable repeatability, and accurate reproducibility. Moreover, the good practicability performance could be effectuated at the NiO/CPE sensor for the quantitative analysis of GA in bourtree, walnut, primrose, and chamomile tea samples. The results were compared with the standard DPPH test and statistical processing of the results was performed, which confirmed the excellent agreement between the two methods. The developed method can provide a cost-effective, rapid, selective, and sensitive means for GA monitoring. When compared to other works, the developed technique has a wider linear range and lower LOD and LOQ, which makes this work a very important reference for the highly sensitive analysis of GA in the field of food safety.
T2  - Journal of Electroanalytical Chemistry
T1  - Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode
VL  - 960
SP  - 118213
DO  - 10.1016/j.jelechem.2024.118213
ER  - 
@article{
author = "Mutić, Tijana and Ognjanović, Miloš and Ivković, Đurđa and Nikolić, Vladimir and Stanković, Vesna and Ristivojević, Petar and Stanković, Dalibor",
year = "2024",
abstract = "In this study, we successfully prepared a modified nickel oxide (NiO) carbon paste electrode to detect gallic acid (GA). NiO nanoparticles were synthesized by the simple, organic solvent-free chemical coprecipitation method, and the electrochemical properties of the electrode and GA were thoroughly investigated using CV, SWV, and EIS, while morphological properties were examined using ICP-OES, TEM, SEM, and XRD. Excellent catalytic characteristics are displayed by the developed material which facilitates the interaction of the target with the electrode surface. The obtained electrochemical information showed that the incorporation of NiO nanoparticles to the carbon paste electrode effectively facilitates electron transfer processes and enriches the catalytic response of the carbon paste electrode. The fabricated NiO/CPE sensor showed a satisfactory linear relationship between peak current and GA concentration in the broad range of 0.2–100 μM and 100–200 μM with a low detection limit of 0.04 μM and limit of quantification of 0.12 μM at pH 3 of BRBS as supporting electrolyte. The selectivity of the proposed method was satisfactory, with acceptable stability, considerable repeatability, and accurate reproducibility. Moreover, the good practicability performance could be effectuated at the NiO/CPE sensor for the quantitative analysis of GA in bourtree, walnut, primrose, and chamomile tea samples. The results were compared with the standard DPPH test and statistical processing of the results was performed, which confirmed the excellent agreement between the two methods. The developed method can provide a cost-effective, rapid, selective, and sensitive means for GA monitoring. When compared to other works, the developed technique has a wider linear range and lower LOD and LOQ, which makes this work a very important reference for the highly sensitive analysis of GA in the field of food safety.",
journal = "Journal of Electroanalytical Chemistry",
title = "Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode",
volume = "960",
pages = "118213",
doi = "10.1016/j.jelechem.2024.118213"
}
Mutić, T., Ognjanović, M., Ivković, Đ., Nikolić, V., Stanković, V., Ristivojević, P.,& Stanković, D.. (2024). Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode. in Journal of Electroanalytical Chemistry, 960, 118213.
https://doi.org/10.1016/j.jelechem.2024.118213
Mutić T, Ognjanović M, Ivković Đ, Nikolić V, Stanković V, Ristivojević P, Stanković D. Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode. in Journal of Electroanalytical Chemistry. 2024;960:118213.
doi:10.1016/j.jelechem.2024.118213 .
Mutić, Tijana, Ognjanović, Miloš, Ivković, Đurđa, Nikolić, Vladimir, Stanković, Vesna, Ristivojević, Petar, Stanković, Dalibor, "Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode" in Journal of Electroanalytical Chemistry, 960 (2024):118213,
https://doi.org/10.1016/j.jelechem.2024.118213 . .

Interfacial charge transfer complexes between ZnO and benzene derivatives: Characterization and photocatalytic hydrogen production

Dukić, Miljana; Sredojević, Dušan; Férová, Marta; Slovak, Vaclav; Lončarević, Davor; Dostanić, Jasmina; Šalipur, Hristina; Lazić, Vesna; Nedeljković, Jovan

(2024)

TY  - JOUR
AU  - Dukić, Miljana
AU  - Sredojević, Dušan
AU  - Férová, Marta
AU  - Slovak, Vaclav
AU  - Lončarević, Davor
AU  - Dostanić, Jasmina
AU  - Šalipur, Hristina
AU  - Lazić, Vesna
AU  - Nedeljković, Jovan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12989
AB  - The interfacial charge transfer (ICT) complex formation is a simple procedure to bring optical absorption of widebandgap oxide materials in the visible spectral range, crucial for enhancing their use in photo-driven reactions. The optical absorption of the prepared ICT complexes between ZnO and five different colorless benzene derivatives is red-shifted compared to pristine ZnO nanopowder. The density functional theory (DFT) calculations provided realistic energy level alignment in hybrid systems. Also, the DFT-calculated infrared spectra support the binding structures derived based on experimental measurements of free and adsorbed ligands onto ZnO surfaces. The photocatalytic performance of prepared hybrids was evaluated using photocatalytic hydrogen generation in the water-splitting reaction. The ZnO nanopowders modified with catechol and caffeic acid have over 50% higher hydrogen production rate than pristine ZnO, displaying steady hydrogen production under long-run working conditions.
T2  - International Journal of Hydrogen Energy
T1  - Interfacial charge transfer complexes between ZnO and benzene derivatives: Characterization and photocatalytic hydrogen production
VL  - 62
SP  - 628
EP  - 636
DO  - 10.1016/j.ijhydene.2024.03.075
ER  - 
@article{
author = "Dukić, Miljana and Sredojević, Dušan and Férová, Marta and Slovak, Vaclav and Lončarević, Davor and Dostanić, Jasmina and Šalipur, Hristina and Lazić, Vesna and Nedeljković, Jovan",
year = "2024",
abstract = "The interfacial charge transfer (ICT) complex formation is a simple procedure to bring optical absorption of widebandgap oxide materials in the visible spectral range, crucial for enhancing their use in photo-driven reactions. The optical absorption of the prepared ICT complexes between ZnO and five different colorless benzene derivatives is red-shifted compared to pristine ZnO nanopowder. The density functional theory (DFT) calculations provided realistic energy level alignment in hybrid systems. Also, the DFT-calculated infrared spectra support the binding structures derived based on experimental measurements of free and adsorbed ligands onto ZnO surfaces. The photocatalytic performance of prepared hybrids was evaluated using photocatalytic hydrogen generation in the water-splitting reaction. The ZnO nanopowders modified with catechol and caffeic acid have over 50% higher hydrogen production rate than pristine ZnO, displaying steady hydrogen production under long-run working conditions.",
journal = "International Journal of Hydrogen Energy",
title = "Interfacial charge transfer complexes between ZnO and benzene derivatives: Characterization and photocatalytic hydrogen production",
volume = "62",
pages = "628-636",
doi = "10.1016/j.ijhydene.2024.03.075"
}
Dukić, M., Sredojević, D., Férová, M., Slovak, V., Lončarević, D., Dostanić, J., Šalipur, H., Lazić, V.,& Nedeljković, J.. (2024). Interfacial charge transfer complexes between ZnO and benzene derivatives: Characterization and photocatalytic hydrogen production. in International Journal of Hydrogen Energy, 62, 628-636.
https://doi.org/10.1016/j.ijhydene.2024.03.075
Dukić M, Sredojević D, Férová M, Slovak V, Lončarević D, Dostanić J, Šalipur H, Lazić V, Nedeljković J. Interfacial charge transfer complexes between ZnO and benzene derivatives: Characterization and photocatalytic hydrogen production. in International Journal of Hydrogen Energy. 2024;62:628-636.
doi:10.1016/j.ijhydene.2024.03.075 .
Dukić, Miljana, Sredojević, Dušan, Férová, Marta, Slovak, Vaclav, Lončarević, Davor, Dostanić, Jasmina, Šalipur, Hristina, Lazić, Vesna, Nedeljković, Jovan, "Interfacial charge transfer complexes between ZnO and benzene derivatives: Characterization and photocatalytic hydrogen production" in International Journal of Hydrogen Energy, 62 (2024):628-636,
https://doi.org/10.1016/j.ijhydene.2024.03.075 . .

The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples

Mijajlović, Aleksandar; Stanković, Vesna; Vlahović, Filip; Đurđić, Slađana; Manojlović, Dragan; Stanković, Dalibor

(2024)

TY  - JOUR
AU  - Mijajlović, Aleksandar
AU  - Stanković, Vesna
AU  - Vlahović, Filip
AU  - Đurđić, Slađana
AU  - Manojlović, Dragan
AU  - Stanković, Dalibor
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13021
AB  - Excessive pesticide use can harm human health, making it essential to develop new techniques to monitor hazardous pesticides in food. Our study focuses on detecting mesotrione (MST) using an unmodified boron-doped diamond (BDD) electrode. This was the first application of cathodically pretreated BDD electrode for the detection of MST, based on its oxidation at a high potential value of +1.4 V. We theoretically examined the oxidation mechanism of MST trough the utilization of density functional theory (DFT) methodology. The utilized DPV method achieved a detection limit of 0.45 μM and showed satisfactory selectivity. The practical application of this method was demonstrated by examining corn-based food products. To ensure practical application of the method, MST was deliberately added to the samples to evaluate the accuracy of the proposed method. The effectiveness of the method was confirmed by using HPLC method. This environmentally-friendly approach can establish a solid foundation for future use in food analysis.
T2  - Food Chemistry
T1  - The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples
VL  - 447
SP  - 138993
DO  - 10.1016/j.foodchem.2024.138993
ER  - 
@article{
author = "Mijajlović, Aleksandar and Stanković, Vesna and Vlahović, Filip and Đurđić, Slađana and Manojlović, Dragan and Stanković, Dalibor",
year = "2024",
abstract = "Excessive pesticide use can harm human health, making it essential to develop new techniques to monitor hazardous pesticides in food. Our study focuses on detecting mesotrione (MST) using an unmodified boron-doped diamond (BDD) electrode. This was the first application of cathodically pretreated BDD electrode for the detection of MST, based on its oxidation at a high potential value of +1.4 V. We theoretically examined the oxidation mechanism of MST trough the utilization of density functional theory (DFT) methodology. The utilized DPV method achieved a detection limit of 0.45 μM and showed satisfactory selectivity. The practical application of this method was demonstrated by examining corn-based food products. To ensure practical application of the method, MST was deliberately added to the samples to evaluate the accuracy of the proposed method. The effectiveness of the method was confirmed by using HPLC method. This environmentally-friendly approach can establish a solid foundation for future use in food analysis.",
journal = "Food Chemistry",
title = "The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples",
volume = "447",
pages = "138993",
doi = "10.1016/j.foodchem.2024.138993"
}
Mijajlović, A., Stanković, V., Vlahović, F., Đurđić, S., Manojlović, D.,& Stanković, D.. (2024). The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples. in Food Chemistry, 447, 138993.
https://doi.org/10.1016/j.foodchem.2024.138993
Mijajlović A, Stanković V, Vlahović F, Đurđić S, Manojlović D, Stanković D. The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples. in Food Chemistry. 2024;447:138993.
doi:10.1016/j.foodchem.2024.138993 .
Mijajlović, Aleksandar, Stanković, Vesna, Vlahović, Filip, Đurđić, Slađana, Manojlović, Dragan, Stanković, Dalibor, "The cathodically pretreated boron-doped diamond electrode as an environmentally friendly electrochemical tool for the detection and monitoring of mesotrione in food samples" in Food Chemistry, 447 (2024):138993,
https://doi.org/10.1016/j.foodchem.2024.138993 . .

Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles

Alazreg, Asma; Vuksanović, Marija M.; Mladenović, Ivana O.; Egelja, Adela; Janković-Mandić, Ljiljana; Marinković, Aleksandar; Jančić-Heinemann, Radmila

(2024)

TY  - JOUR
AU  - Alazreg, Asma
AU  - Vuksanović, Marija M.
AU  - Mladenović, Ivana O.
AU  - Egelja, Adela
AU  - Janković-Mandić, Ljiljana
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11720
AB  - The MgAl-LDH@SiO2 particles are prepared by the coprecipitation of LDH on silica originating from plants.Particles are of submicron size and are well dispersed in the matrix. Composites consisting of PMMA reinforcedwith MgAl-LDH@SiO2 particles have improved hardness and resistance to viscoelastic deformation, as tested bymicrohardness measurements.
T2  - Materials Letters
T1  - Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles
VL  - 354
SP  - 135354
DO  - 10.1016/j.matlet.2023.135354
ER  - 
@article{
author = "Alazreg, Asma and Vuksanović, Marija M. and Mladenović, Ivana O. and Egelja, Adela and Janković-Mandić, Ljiljana and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2024",
abstract = "The MgAl-LDH@SiO2 particles are prepared by the coprecipitation of LDH on silica originating from plants.Particles are of submicron size and are well dispersed in the matrix. Composites consisting of PMMA reinforcedwith MgAl-LDH@SiO2 particles have improved hardness and resistance to viscoelastic deformation, as tested bymicrohardness measurements.",
journal = "Materials Letters",
title = "Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles",
volume = "354",
pages = "135354",
doi = "10.1016/j.matlet.2023.135354"
}
Alazreg, A., Vuksanović, M. M., Mladenović, I. O., Egelja, A., Janković-Mandić, L., Marinković, A.,& Jančić-Heinemann, R.. (2024). Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles. in Materials Letters, 354, 135354.
https://doi.org/10.1016/j.matlet.2023.135354
Alazreg A, Vuksanović MM, Mladenović IO, Egelja A, Janković-Mandić L, Marinković A, Jančić-Heinemann R. Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles. in Materials Letters. 2024;354:135354.
doi:10.1016/j.matlet.2023.135354 .
Alazreg, Asma, Vuksanović, Marija M., Mladenović, Ivana O., Egelja, Adela, Janković-Mandić, Ljiljana, Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Dental material based on poly(methyl methacrylate) with magnesium-aluminum layered double hydroxide (MgAl-LDH) on bio-silica particles" in Materials Letters, 354 (2024):135354,
https://doi.org/10.1016/j.matlet.2023.135354 . .

Green Plasticizer for Poly(vinyl chloride) Re-Granulate Production: Case Study of Sustainability Concept Implementation

Vuksanović, Marija M.; Milošević, Milena; Dimitrijević, Ivan; Milentijević, Gordana; Babincev, Ljiljana; Gržetić, Jelena; Marinković, Aleksandar; Milosavljević, Milutin

(2024)

TY  - JOUR
AU  - Vuksanović, Marija M.
AU  - Milošević, Milena
AU  - Dimitrijević, Ivan
AU  - Milentijević, Gordana
AU  - Babincev, Ljiljana
AU  - Gržetić, Jelena
AU  - Marinković, Aleksandar
AU  - Milosavljević, Milutin
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12939
AB  - The increase in waste polymer recycling has helped in promoting sustainability, and together with the use of renewable raw materials, it has become a widespread concept with positive effects on both the economy and ecology. Accordingly, the aim of this study was the synthesis of “green” plasticizers, marked as LA/PG/PET/EG/LA, formed from waste poly(ethylene terephthalate) (PET) and bio-based platform chemicals propylene glycol (PG) and levulinic acid (LA). The structure of the obtained plasticizers was complex, as confirmed by results from nuclear magnetic resonance (NMR) and Fourier-transform infrared spectroscopy (FTIR) analysis. The LA/PG/PET/EG/LA plasticizers and waste poly(vinyl chloride) (PVC) were used in an optimized technology for PVC re-granulate production. The hardness of the PVC-based material with “green” plasticizers, in comparison to commercial plasticizer dioctyl terephthalate (DOTP), increased by 11.3%, while migration decreased. An improved material homogeneity and wettability of the fibers by the matrix were observed using SEM analysis of the material’s fracture surface, with a higher efficiency of intermolecular interactions leading to better mechanical performances of the newly designed materials. Thus, LA/PG/PET/EG/LA are unique materials with good compounding and plasticizing potential for PVC, as revealed by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). In that manner, the use of bio-renewable resources and recycled polymers will contribute to diminishing waste polymer generation, contributing to a lower carbon footprint.
T2  - Processes
T1  - Green Plasticizer for Poly(vinyl chloride) Re-Granulate Production: Case Study of Sustainability Concept Implementation
VL  - 12
IS  - 3
SP  - 520
DO  - 10.3390/pr12030520
ER  - 
@article{
author = "Vuksanović, Marija M. and Milošević, Milena and Dimitrijević, Ivan and Milentijević, Gordana and Babincev, Ljiljana and Gržetić, Jelena and Marinković, Aleksandar and Milosavljević, Milutin",
year = "2024",
abstract = "The increase in waste polymer recycling has helped in promoting sustainability, and together with the use of renewable raw materials, it has become a widespread concept with positive effects on both the economy and ecology. Accordingly, the aim of this study was the synthesis of “green” plasticizers, marked as LA/PG/PET/EG/LA, formed from waste poly(ethylene terephthalate) (PET) and bio-based platform chemicals propylene glycol (PG) and levulinic acid (LA). The structure of the obtained plasticizers was complex, as confirmed by results from nuclear magnetic resonance (NMR) and Fourier-transform infrared spectroscopy (FTIR) analysis. The LA/PG/PET/EG/LA plasticizers and waste poly(vinyl chloride) (PVC) were used in an optimized technology for PVC re-granulate production. The hardness of the PVC-based material with “green” plasticizers, in comparison to commercial plasticizer dioctyl terephthalate (DOTP), increased by 11.3%, while migration decreased. An improved material homogeneity and wettability of the fibers by the matrix were observed using SEM analysis of the material’s fracture surface, with a higher efficiency of intermolecular interactions leading to better mechanical performances of the newly designed materials. Thus, LA/PG/PET/EG/LA are unique materials with good compounding and plasticizing potential for PVC, as revealed by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). In that manner, the use of bio-renewable resources and recycled polymers will contribute to diminishing waste polymer generation, contributing to a lower carbon footprint.",
journal = "Processes",
title = "Green Plasticizer for Poly(vinyl chloride) Re-Granulate Production: Case Study of Sustainability Concept Implementation",
volume = "12",
number = "3",
pages = "520",
doi = "10.3390/pr12030520"
}
Vuksanović, M. M., Milošević, M., Dimitrijević, I., Milentijević, G., Babincev, L., Gržetić, J., Marinković, A.,& Milosavljević, M.. (2024). Green Plasticizer for Poly(vinyl chloride) Re-Granulate Production: Case Study of Sustainability Concept Implementation. in Processes, 12(3), 520.
https://doi.org/10.3390/pr12030520
Vuksanović MM, Milošević M, Dimitrijević I, Milentijević G, Babincev L, Gržetić J, Marinković A, Milosavljević M. Green Plasticizer for Poly(vinyl chloride) Re-Granulate Production: Case Study of Sustainability Concept Implementation. in Processes. 2024;12(3):520.
doi:10.3390/pr12030520 .
Vuksanović, Marija M., Milošević, Milena, Dimitrijević, Ivan, Milentijević, Gordana, Babincev, Ljiljana, Gržetić, Jelena, Marinković, Aleksandar, Milosavljević, Milutin, "Green Plasticizer for Poly(vinyl chloride) Re-Granulate Production: Case Study of Sustainability Concept Implementation" in Processes, 12, no. 3 (2024):520,
https://doi.org/10.3390/pr12030520 . .

Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu

Vuksanović, Marija M.; Mladenović, Ivana; Radovanović, Željko; Živković, Predrag; Savić, Andrija B.; Marinković, Aleksandar; Jančić-Heinemann, Radmila

(2024)

TY  - JOUR
AU  - Vuksanović, Marija M.
AU  - Mladenović, Ivana
AU  - Radovanović, Željko
AU  - Živković, Predrag
AU  - Savić, Andrija B.
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12952
AB  - Polimerne smole na bazi akrilata dobijene iz Bis-GMA (Bisfenol A glicidmetakrilat), koji je pogodan za fotopolimerizaciju, koriste se u stomatologiji za različite namene zbog lakoće nanošenja i mogućnosti da se utiče na njihova svojstva dodavanjem ojačanja različitog oblika i hemijskog sastava. Sintetisano je ojačanje u formi čestica na bazi dvostrukih slojevitih hidroksida magnezijuma i aluminijuma (MgAlLDH-Layered Double Hidroxides) nataloženih na silicijum dioksidu dobijenom iz ljuski pirinča. Kao podloge korišćene su metalna legura na bazi hroma i molibdena za primenu u stomatologiji i staklo u formi podloga za mikroskopske preparate. Adhezivna svojstva kompozita su bitna sa aspekta njihove primene. Adhezivna svojstva materijala su određena na osnovu merenja mikrotvrdoće kompozita i to primenom različitih opterećenja kako bi se procenio parametar adhezije koji pokazuje uticaj prevlake na podlogu. Upoređeno je kako se vezuje čista matrica od fotopolimerizujućeg akrilata sa podlogom od stomatološke legure sa vezivanjem za staklenu podlogu. Potom je upoređeno kako se vezuju kompozitni materijali na obe podloge. Adhezija je određena i na osnovu promene ugla kvašenja između kompozita i rezultati su upoređeni sa rezultatima mikroindentacije. Pokazalo se da dodatak kompozitnih čestica kao ojačanja u matricu od akrilata povećava adhezivna svojstva kompozita u odnosu na čistu matricu i da se ostvaruje bolja adhezija između kompozita i metalne podloge nego između kompozita i staklene podloge.
AB  - Polymer resins based on acrylates obtained from Bis-GMA (Bisphenol A glycide methacrylate), which is suitable for photopolymerization, are used in dentistry for various purposes due to the ease of application and the possibility to influence their properties by adding reinforcements of different shapes, crystal structure and chemical compositions. Reinforcement in the form of particles based on MgAlLDH (layered double hydroxide) deposited on silica obtained from rice husks on two substrates. A metal base and glass were used. The adhesive properties are important in order to see the possibility of using these materials in applications. In order to measure the adhesive properties of the material, the composite microhardness measurement method is used by applying different loads in order to evaluate the adhesion parameter that shows the effect of the coating on the substrate. It was compared to how a pure photopolymerizing acrylate matrix bonds with a chromium-based dental alloy substrate that is used in the production of different parts of dentures by bonding to a glass substrate. Then, it was compared how composite materials are bonded to both substrates. Adhesion was monitored through the change in wetting angle between the composites, and the results were compared with the results of microindentation. It was shown that the addition of composite particles increases the adhesive properties of the composite compared to the pure matrix and that better adhesion is achieved between the composite and the metal substrate than between the composite and the glass substrate.
T2  - Tehnika
T1  - Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu
T1  - Adhesion testing of photopolymerizing acrylates reinforced with MgAlLDH@SiO2 particles on dental chromium alloy and on glass
VL  - 79
IS  - 1
SP  - 9
EP  - 13
DO  - 10.5937/tehnika2401009V
ER  - 
@article{
author = "Vuksanović, Marija M. and Mladenović, Ivana and Radovanović, Željko and Živković, Predrag and Savić, Andrija B. and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2024",
abstract = "Polimerne smole na bazi akrilata dobijene iz Bis-GMA (Bisfenol A glicidmetakrilat), koji je pogodan za fotopolimerizaciju, koriste se u stomatologiji za različite namene zbog lakoće nanošenja i mogućnosti da se utiče na njihova svojstva dodavanjem ojačanja različitog oblika i hemijskog sastava. Sintetisano je ojačanje u formi čestica na bazi dvostrukih slojevitih hidroksida magnezijuma i aluminijuma (MgAlLDH-Layered Double Hidroxides) nataloženih na silicijum dioksidu dobijenom iz ljuski pirinča. Kao podloge korišćene su metalna legura na bazi hroma i molibdena za primenu u stomatologiji i staklo u formi podloga za mikroskopske preparate. Adhezivna svojstva kompozita su bitna sa aspekta njihove primene. Adhezivna svojstva materijala su određena na osnovu merenja mikrotvrdoće kompozita i to primenom različitih opterećenja kako bi se procenio parametar adhezije koji pokazuje uticaj prevlake na podlogu. Upoređeno je kako se vezuje čista matrica od fotopolimerizujućeg akrilata sa podlogom od stomatološke legure sa vezivanjem za staklenu podlogu. Potom je upoređeno kako se vezuju kompozitni materijali na obe podloge. Adhezija je određena i na osnovu promene ugla kvašenja između kompozita i rezultati su upoređeni sa rezultatima mikroindentacije. Pokazalo se da dodatak kompozitnih čestica kao ojačanja u matricu od akrilata povećava adhezivna svojstva kompozita u odnosu na čistu matricu i da se ostvaruje bolja adhezija između kompozita i metalne podloge nego između kompozita i staklene podloge., Polymer resins based on acrylates obtained from Bis-GMA (Bisphenol A glycide methacrylate), which is suitable for photopolymerization, are used in dentistry for various purposes due to the ease of application and the possibility to influence their properties by adding reinforcements of different shapes, crystal structure and chemical compositions. Reinforcement in the form of particles based on MgAlLDH (layered double hydroxide) deposited on silica obtained from rice husks on two substrates. A metal base and glass were used. The adhesive properties are important in order to see the possibility of using these materials in applications. In order to measure the adhesive properties of the material, the composite microhardness measurement method is used by applying different loads in order to evaluate the adhesion parameter that shows the effect of the coating on the substrate. It was compared to how a pure photopolymerizing acrylate matrix bonds with a chromium-based dental alloy substrate that is used in the production of different parts of dentures by bonding to a glass substrate. Then, it was compared how composite materials are bonded to both substrates. Adhesion was monitored through the change in wetting angle between the composites, and the results were compared with the results of microindentation. It was shown that the addition of composite particles increases the adhesive properties of the composite compared to the pure matrix and that better adhesion is achieved between the composite and the metal substrate than between the composite and the glass substrate.",
journal = "Tehnika",
title = "Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu, Adhesion testing of photopolymerizing acrylates reinforced with MgAlLDH@SiO2 particles on dental chromium alloy and on glass",
volume = "79",
number = "1",
pages = "9-13",
doi = "10.5937/tehnika2401009V"
}
Vuksanović, M. M., Mladenović, I., Radovanović, Ž., Živković, P., Savić, A. B., Marinković, A.,& Jančić-Heinemann, R.. (2024). Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu. in Tehnika, 79(1), 9-13.
https://doi.org/10.5937/tehnika2401009V
Vuksanović MM, Mladenović I, Radovanović Ž, Živković P, Savić AB, Marinković A, Jančić-Heinemann R. Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu. in Tehnika. 2024;79(1):9-13.
doi:10.5937/tehnika2401009V .
Vuksanović, Marija M., Mladenović, Ivana, Radovanović, Željko, Živković, Predrag, Savić, Andrija B., Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Ispitivanje prianjanja fotopolimerizujućih akrilata ojačanih česticama MgAlLDH@SiO2 na stomatološkoj hromiranoj leguri i na staklu" in Tehnika, 79, no. 1 (2024):9-13,
https://doi.org/10.5937/tehnika2401009V . .

Electrodeposition of copper on glassy carbon and palladium from choline chloride - ethylene glycol deep eutectic solvent

Cvetković, Vesna S.; Jović, Vladimir D.; Nikolić, Nebojša D.; Barudžija, Tanja; Dimitrijević, Silvana; Jovićević, Jovan N.

(2024)

TY  - JOUR
AU  - Cvetković, Vesna S.
AU  - Jović, Vladimir D.
AU  - Nikolić, Nebojša D.
AU  - Barudžija, Tanja
AU  - Dimitrijević, Silvana
AU  - Jovićević, Jovan N.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12936
AB  - Electrodeposition of copper from deep eutectic solvents (DES) based on a mixture of choline chloride and ethylene glycol containing CuCl2·2H2O at 50 °C and 80 °C was studied. Electrochemical reduction/oxidation of Cu(II)/Cu(0) on glassy carbon (GC) and palladium (Pd) electrodes was investigated by cyclic voltammetry (CV) and square wave voltammetry (SWV) emphasizing that this process takes place through two steps, Cu(II) ↔ Cu(I) and Cu(I) ↔ Cu(0). The CV results showed that in chloride-rich DES electrolytes, the increased presence of chloro ligands raises the overpotential required for Cu electrodeposition. The electrochemical impedance spectroscopy (EIS) results indicate simultaneous electrodeposition of Cu and electrosorption of large cations on electrodeposited Cu on both GC and Pd substrates. Scanning electron microscopy (SEM) results showed that Cu grains of approximately 1 μm were obtained by electrodeposition of Cu on both Pd and GC, whereby better coverage by electrodeposited Cu was obtained on Pd than on GC. Cu electrodeposited on Pd was relatively uniform and smooth, but porous, while Cu electrodeposited on GC was dispersed in small agglomerates. Energy-dispersive X-ray spectroscopy (EDS) of Cu electrodeposited on Pd detected the dominant presence of Cu with the possibility of the formation of CuPd alloy. The presence of CuPd alloy face-centred cubic structures is confirmed by X-ray diffraction (XRD) along with metallic Cu.
T2  - Journal of Electroanalytical Chemistry
T1  - Electrodeposition of copper on glassy carbon and palladium from choline chloride - ethylene glycol deep eutectic solvent
VL  - 958
SP  - 118161
DO  - 10.1016/j.jelechem.2024.118161
ER  - 
@article{
author = "Cvetković, Vesna S. and Jović, Vladimir D. and Nikolić, Nebojša D. and Barudžija, Tanja and Dimitrijević, Silvana and Jovićević, Jovan N.",
year = "2024",
abstract = "Electrodeposition of copper from deep eutectic solvents (DES) based on a mixture of choline chloride and ethylene glycol containing CuCl2·2H2O at 50 °C and 80 °C was studied. Electrochemical reduction/oxidation of Cu(II)/Cu(0) on glassy carbon (GC) and palladium (Pd) electrodes was investigated by cyclic voltammetry (CV) and square wave voltammetry (SWV) emphasizing that this process takes place through two steps, Cu(II) ↔ Cu(I) and Cu(I) ↔ Cu(0). The CV results showed that in chloride-rich DES electrolytes, the increased presence of chloro ligands raises the overpotential required for Cu electrodeposition. The electrochemical impedance spectroscopy (EIS) results indicate simultaneous electrodeposition of Cu and electrosorption of large cations on electrodeposited Cu on both GC and Pd substrates. Scanning electron microscopy (SEM) results showed that Cu grains of approximately 1 μm were obtained by electrodeposition of Cu on both Pd and GC, whereby better coverage by electrodeposited Cu was obtained on Pd than on GC. Cu electrodeposited on Pd was relatively uniform and smooth, but porous, while Cu electrodeposited on GC was dispersed in small agglomerates. Energy-dispersive X-ray spectroscopy (EDS) of Cu electrodeposited on Pd detected the dominant presence of Cu with the possibility of the formation of CuPd alloy. The presence of CuPd alloy face-centred cubic structures is confirmed by X-ray diffraction (XRD) along with metallic Cu.",
journal = "Journal of Electroanalytical Chemistry",
title = "Electrodeposition of copper on glassy carbon and palladium from choline chloride - ethylene glycol deep eutectic solvent",
volume = "958",
pages = "118161",
doi = "10.1016/j.jelechem.2024.118161"
}
Cvetković, V. S., Jović, V. D., Nikolić, N. D., Barudžija, T., Dimitrijević, S.,& Jovićević, J. N.. (2024). Electrodeposition of copper on glassy carbon and palladium from choline chloride - ethylene glycol deep eutectic solvent. in Journal of Electroanalytical Chemistry, 958, 118161.
https://doi.org/10.1016/j.jelechem.2024.118161
Cvetković VS, Jović VD, Nikolić ND, Barudžija T, Dimitrijević S, Jovićević JN. Electrodeposition of copper on glassy carbon and palladium from choline chloride - ethylene glycol deep eutectic solvent. in Journal of Electroanalytical Chemistry. 2024;958:118161.
doi:10.1016/j.jelechem.2024.118161 .
Cvetković, Vesna S., Jović, Vladimir D., Nikolić, Nebojša D., Barudžija, Tanja, Dimitrijević, Silvana, Jovićević, Jovan N., "Electrodeposition of copper on glassy carbon and palladium from choline chloride - ethylene glycol deep eutectic solvent" in Journal of Electroanalytical Chemistry, 958 (2024):118161,
https://doi.org/10.1016/j.jelechem.2024.118161 . .

Blue-light-driven photoactivity of L-cysteine-modified graphene quantum dots and their antibacterial effects

Milenković, Mila; Ciasca, Gabriele; Bonasera, Aurelio; Scopelliti, Michelangelo; Marković, Olivera; Verbić, Tatjana; Todorović Marković, Biljana; Jovanović, Svetlana

(2024)

TY  - JOUR
AU  - Milenković, Mila
AU  - Ciasca, Gabriele
AU  - Bonasera, Aurelio
AU  - Scopelliti, Michelangelo
AU  - Marković, Olivera
AU  - Verbić, Tatjana
AU  - Todorović Marković, Biljana
AU  - Jovanović, Svetlana
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12238
AB  - The widespread abuse of traditional antibiotics has led to a global rise in antibiotic-resistant bacteria, which give in return unprecedented health risks. Therefore, there is a large and urgent need for the development of new, smart antibacterial agents able to efficiently kill or inhibit bacterial growth. In this study, we investigated the antibacterial activity of S, N-doped Graphene Quantum Dots (GQDs) as a light-triggered antibacterial agent. Gamma irradiation was employed as a tool to achieve one-step modification of GQDs in the presence of L cysteine amino acid as a source of heteroatoms. X-ray Photoelectron Spectroscopy (XPS), nuclear magnetic resonance (NMR), and zeta potential measurements provided the necessary data to clarify the structure of modified dots and verify the introduction of both S- and N-atoms in GQDs structure, but also severe changes in the aromatic, sp2 domains. Namely, γ-irradiation caused a bonding of S atoms in 1.14 at.% mainly as thiol groups, and N in 1.81 at.% as amino groups, but sp2 contribution in GQD structure was lowered from 63.00 to 4.86 at.%, as measured in dots irradiated at a dose of 200 kGy. Fluorescence quenching measurements showed that L-cysteine-modified dots are able to bind to human serum albumin. The antibacterial activity of GQDs combined with 1 and 6 h of blue light (470 nm) irradiation was tested against 8 bacterial strains. GQD-cys-25 sample provided the best results, with minimum inhibitory concentration (MIC) as low as 125 μg/mL against S. aureus, E. faecalis, and E. coli after only 1 h of blue light exposure.
T2  - Journal of Photochemistry & Photobiology, B: Biology
T1  - Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects
VL  - 250
SP  - 112818
DO  - 10.1016/j.jphotobiol.2023.112818
ER  - 
@article{
author = "Milenković, Mila and Ciasca, Gabriele and Bonasera, Aurelio and Scopelliti, Michelangelo and Marković, Olivera and Verbić, Tatjana and Todorović Marković, Biljana and Jovanović, Svetlana",
year = "2024",
abstract = "The widespread abuse of traditional antibiotics has led to a global rise in antibiotic-resistant bacteria, which give in return unprecedented health risks. Therefore, there is a large and urgent need for the development of new, smart antibacterial agents able to efficiently kill or inhibit bacterial growth. In this study, we investigated the antibacterial activity of S, N-doped Graphene Quantum Dots (GQDs) as a light-triggered antibacterial agent. Gamma irradiation was employed as a tool to achieve one-step modification of GQDs in the presence of L cysteine amino acid as a source of heteroatoms. X-ray Photoelectron Spectroscopy (XPS), nuclear magnetic resonance (NMR), and zeta potential measurements provided the necessary data to clarify the structure of modified dots and verify the introduction of both S- and N-atoms in GQDs structure, but also severe changes in the aromatic, sp2 domains. Namely, γ-irradiation caused a bonding of S atoms in 1.14 at.% mainly as thiol groups, and N in 1.81 at.% as amino groups, but sp2 contribution in GQD structure was lowered from 63.00 to 4.86 at.%, as measured in dots irradiated at a dose of 200 kGy. Fluorescence quenching measurements showed that L-cysteine-modified dots are able to bind to human serum albumin. The antibacterial activity of GQDs combined with 1 and 6 h of blue light (470 nm) irradiation was tested against 8 bacterial strains. GQD-cys-25 sample provided the best results, with minimum inhibitory concentration (MIC) as low as 125 μg/mL against S. aureus, E. faecalis, and E. coli after only 1 h of blue light exposure.",
journal = "Journal of Photochemistry & Photobiology, B: Biology",
title = "Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects",
volume = "250",
pages = "112818",
doi = "10.1016/j.jphotobiol.2023.112818"
}
Milenković, M., Ciasca, G., Bonasera, A., Scopelliti, M., Marković, O., Verbić, T., Todorović Marković, B.,& Jovanović, S.. (2024). Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects. in Journal of Photochemistry & Photobiology, B: Biology, 250, 112818.
https://doi.org/10.1016/j.jphotobiol.2023.112818
Milenković M, Ciasca G, Bonasera A, Scopelliti M, Marković O, Verbić T, Todorović Marković B, Jovanović S. Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects. in Journal of Photochemistry & Photobiology, B: Biology. 2024;250:112818.
doi:10.1016/j.jphotobiol.2023.112818 .
Milenković, Mila, Ciasca, Gabriele, Bonasera, Aurelio, Scopelliti, Michelangelo, Marković, Olivera, Verbić, Tatjana, Todorović Marković, Biljana, Jovanović, Svetlana, "Blue-light-driven photoactivity of L-cysteine-modified graphene quantum  dots and their antibacterial effects" in Journal of Photochemistry & Photobiology, B: Biology, 250 (2024):112818,
https://doi.org/10.1016/j.jphotobiol.2023.112818 . .

Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite

Panić, Vesna V.; Jovanović, Jelena D.; Spasojević, Jelena P.; Savić, Sanja I.; Marković, Maja D.; Radulović, Aleksandra M.; Adnađević, Borivoj K.

(2024)

TY  - JOUR
AU  - Panić, Vesna V.
AU  - Jovanović, Jelena D.
AU  - Spasojević, Jelena P.
AU  - Savić, Sanja I.
AU  - Marković, Maja D.
AU  - Radulović, Aleksandra M.
AU  - Adnađević, Borivoj K.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12960
AB  - High concentrations of LTA zeolite (27-52mass%) were embedded in poly(methacrylic acid) (PMAA) matrix to obtain composite hydrogels with porosity and active sites originating from both components. Substandard mechanics of PMAA and aggregation of zeolite particles, were thereby overcome. The composites had remarkably higher density than PMAA xerogel (1700 to1400 kg m−3), higher crosslinking density (54.8 to1.29 mol m−3) and lower swelling degree (41 to 420 kg kg−1). Zeolite particles were uniformly dispersed in PMAA matrix and there was no agglomeration or leaching of zeolite despite very high concentrations. XRD patterns revealed that the inclusion of zeolite particles affected the short-range order in the PMAA matrix. Being an active filler LTA zeolite notably improved thermal stability and mechanics of PMAA hydrogel, multiplying the storage modulus 5.2 times in dry and 21.8 times in swollen state. Structure–property correlations were provided making the base for further development of tailor-made zeolite-PMAA composite hydrogels.
T2  - Chemical Engineering Science
T1  - Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite
VL  - 292
SP  - 119981
DO  - 10.1016/j.ces.2024.119981
ER  - 
@article{
author = "Panić, Vesna V. and Jovanović, Jelena D. and Spasojević, Jelena P. and Savić, Sanja I. and Marković, Maja D. and Radulović, Aleksandra M. and Adnađević, Borivoj K.",
year = "2024",
abstract = "High concentrations of LTA zeolite (27-52mass%) were embedded in poly(methacrylic acid) (PMAA) matrix to obtain composite hydrogels with porosity and active sites originating from both components. Substandard mechanics of PMAA and aggregation of zeolite particles, were thereby overcome. The composites had remarkably higher density than PMAA xerogel (1700 to1400 kg m−3), higher crosslinking density (54.8 to1.29 mol m−3) and lower swelling degree (41 to 420 kg kg−1). Zeolite particles were uniformly dispersed in PMAA matrix and there was no agglomeration or leaching of zeolite despite very high concentrations. XRD patterns revealed that the inclusion of zeolite particles affected the short-range order in the PMAA matrix. Being an active filler LTA zeolite notably improved thermal stability and mechanics of PMAA hydrogel, multiplying the storage modulus 5.2 times in dry and 21.8 times in swollen state. Structure–property correlations were provided making the base for further development of tailor-made zeolite-PMAA composite hydrogels.",
journal = "Chemical Engineering Science",
title = "Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite",
volume = "292",
pages = "119981",
doi = "10.1016/j.ces.2024.119981"
}
Panić, V. V., Jovanović, J. D., Spasojević, J. P., Savić, S. I., Marković, M. D., Radulović, A. M.,& Adnađević, B. K.. (2024). Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite. in Chemical Engineering Science, 292, 119981.
https://doi.org/10.1016/j.ces.2024.119981
Panić VV, Jovanović JD, Spasojević JP, Savić SI, Marković MD, Radulović AM, Adnađević BK. Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite. in Chemical Engineering Science. 2024;292:119981.
doi:10.1016/j.ces.2024.119981 .
Panić, Vesna V., Jovanović, Jelena D., Spasojević, Jelena P., Savić, Sanja I., Marković, Maja D., Radulović, Aleksandra M., Adnađević, Borivoj K., "Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite" in Chemical Engineering Science, 292 (2024):119981,
https://doi.org/10.1016/j.ces.2024.119981 . .
1

Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology

Vuksanović, Marija; Mladenović, Ivana; Stupar, Stevan; Marinković, Aleksandar; Jančić-Heinemann, Radmila

(2024)

TY  - JOUR
AU  - Vuksanović, Marija
AU  - Mladenović, Ivana
AU  - Stupar, Stevan
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12483
AB  - Polymer composites based on unsaturated polyester resin (UPR) and reinforced with particles based on unmodified/modifiedplant provenance biosilica particles were synthesized and characterized. An unsaturated polyester resin was obtained fromwaste poly (ethylene terephthalate (PET). Biosilaca particles are made from rice husk biomass. The surface of the producedsilica particles was modified using three different silanes: 3-trimethoxysilylpropyl methacrylate (MEMO), trimethoxyvinylsilane (TMEVS), and 3-aminopropyltrimethoxysilane (APTMS). The microhardness test method was used to investigatethe mechanical properties of synthesized composite material with variations in dwell times and applied loads. Optimization ofcomposite microhardness value prediction in function of synthesized parameters (type of modification of silica particles) andmeasurement parameters (applied loads and dwell times) was done using the method of response surface methodology (RSM)regression analysis. The maximal microhardness values (0.459 GPa) were obtained of type modification of silica particles withvinyl with 80% confidence for 120 experimental variables. This method can be used to choose the optimal dwell time and loadfor comparison of measurements between different composite materials and to enable the choice of the material in terms ofoptimization of the quality of reinforcement and quality of interphase determined by surface modification.
T2  - Polymers and Polymer Composites
T1  - Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology
VL  - 32
SP  - 1
EP  - 12
DO  - 10.1177/09673911241228092
ER  - 
@article{
author = "Vuksanović, Marija and Mladenović, Ivana and Stupar, Stevan and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2024",
abstract = "Polymer composites based on unsaturated polyester resin (UPR) and reinforced with particles based on unmodified/modifiedplant provenance biosilica particles were synthesized and characterized. An unsaturated polyester resin was obtained fromwaste poly (ethylene terephthalate (PET). Biosilaca particles are made from rice husk biomass. The surface of the producedsilica particles was modified using three different silanes: 3-trimethoxysilylpropyl methacrylate (MEMO), trimethoxyvinylsilane (TMEVS), and 3-aminopropyltrimethoxysilane (APTMS). The microhardness test method was used to investigatethe mechanical properties of synthesized composite material with variations in dwell times and applied loads. Optimization ofcomposite microhardness value prediction in function of synthesized parameters (type of modification of silica particles) andmeasurement parameters (applied loads and dwell times) was done using the method of response surface methodology (RSM)regression analysis. The maximal microhardness values (0.459 GPa) were obtained of type modification of silica particles withvinyl with 80% confidence for 120 experimental variables. This method can be used to choose the optimal dwell time and loadfor comparison of measurements between different composite materials and to enable the choice of the material in terms ofoptimization of the quality of reinforcement and quality of interphase determined by surface modification.",
journal = "Polymers and Polymer Composites",
title = "Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology",
volume = "32",
pages = "1-12",
doi = "10.1177/09673911241228092"
}
Vuksanović, M., Mladenović, I., Stupar, S., Marinković, A.,& Jančić-Heinemann, R.. (2024). Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology. in Polymers and Polymer Composites, 32, 1-12.
https://doi.org/10.1177/09673911241228092
Vuksanović M, Mladenović I, Stupar S, Marinković A, Jančić-Heinemann R. Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology. in Polymers and Polymer Composites. 2024;32:1-12.
doi:10.1177/09673911241228092 .
Vuksanović, Marija, Mladenović, Ivana, Stupar, Stevan, Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Microhardness measurement optimization in green derived silica/polyester composites using response surface methodology" in Polymers and Polymer Composites, 32 (2024):1-12,
https://doi.org/10.1177/09673911241228092 . .

Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior

Elhmali, Houda Taher; Stajčić, Ivana; Stajčić, Aleksandar; Pešić, Ivan; Jovanović, Marija; Petrović, Miloš; Radojević, Vesna

(2024)

TY  - JOUR
AU  - Elhmali, Houda Taher
AU  - Stajčić, Ivana
AU  - Stajčić, Aleksandar
AU  - Pešić, Ivan
AU  - Jovanović, Marija
AU  - Petrović, Miloš
AU  - Radojević, Vesna
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12718
AB  - While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.
T2  - Polymers
T1  - Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior
VL  - 16
IS  - 2
SP  - 278
DO  - 10.3390/polym16020278
ER  - 
@article{
author = "Elhmali, Houda Taher and Stajčić, Ivana and Stajčić, Aleksandar and Pešić, Ivan and Jovanović, Marija and Petrović, Miloš and Radojević, Vesna",
year = "2024",
abstract = "While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.",
journal = "Polymers",
title = "Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior",
volume = "16",
number = "2",
pages = "278",
doi = "10.3390/polym16020278"
}
Elhmali, H. T., Stajčić, I., Stajčić, A., Pešić, I., Jovanović, M., Petrović, M.,& Radojević, V.. (2024). Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. in Polymers, 16(2), 278.
https://doi.org/10.3390/polym16020278
Elhmali HT, Stajčić I, Stajčić A, Pešić I, Jovanović M, Petrović M, Radojević V. Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. in Polymers. 2024;16(2):278.
doi:10.3390/polym16020278 .
Elhmali, Houda Taher, Stajčić, Ivana, Stajčić, Aleksandar, Pešić, Ivan, Jovanović, Marija, Petrović, Miloš, Radojević, Vesna, "Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior" in Polymers, 16, no. 2 (2024):278,
https://doi.org/10.3390/polym16020278 . .

Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates

Jovanović, Dunja; Filipović, Ana; Janjić, Goran; Lazarević-Pašti, Tamara; Džambaski, Zdravko; Bondžić, Bojan; Bondžić, Aleksandra

(2024)

TY  - JOUR
AU  - Jovanović, Dunja
AU  - Filipović, Ana
AU  - Janjić, Goran
AU  - Lazarević-Pašti, Tamara
AU  - Džambaski, Zdravko
AU  - Bondžić, Bojan
AU  - Bondžić, Aleksandra
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12450
AB  - We have synthesized 22 C-1 functionalized-N-aryl-1,2,3,4-tetrahydroisoquinoline derivatives showing biological activities towards cholinergic enzymes. Synthesis was performed using visible-light-promoted photo-redox chemistry, starting from a common intermediate, and the application of this synthetic methodology drastically simplified synthetic routes and purification of desired compounds. All synthesized derivates were divided into four groups based on the substituents in the C-1 position, and their inhibition potencies towards two cholinergic enzymes, acetyl- and butyrylcholinesterase were evaluated. Most potent derivatives were selected, and kinetic analysis was further carried out to obtain insights into the mechanisms of inhibition of these two enzymes. Further validation of the mode of inhibition of cholinergic enzymes by the two most potent THIQ compounds, 3c and 3i, was performed using fluorescence-quenching titration studies. Molecular docking studies further confirmed the proposed mechanism of enzymes’ inhibition. In silico predictions of physicochemical properties, pharmacokinetics, drug-likeness, and medicinal chemistry friendliness of the selected most potent derivatives were performed using Swiss ADME tool. This was followed by UPLC-assisted log P determination and in vitro BBB permeability studies performed in order to assess the potential of the synthesized compounds to pass the BBB.
T2  - International Journal of Molecular Sciences
T1  - Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates
VL  - 25
IS  - 2
SP  - 1033
DO  - 10.3390/ijms25021033
ER  - 
@article{
author = "Jovanović, Dunja and Filipović, Ana and Janjić, Goran and Lazarević-Pašti, Tamara and Džambaski, Zdravko and Bondžić, Bojan and Bondžić, Aleksandra",
year = "2024",
abstract = "We have synthesized 22 C-1 functionalized-N-aryl-1,2,3,4-tetrahydroisoquinoline derivatives showing biological activities towards cholinergic enzymes. Synthesis was performed using visible-light-promoted photo-redox chemistry, starting from a common intermediate, and the application of this synthetic methodology drastically simplified synthetic routes and purification of desired compounds. All synthesized derivates were divided into four groups based on the substituents in the C-1 position, and their inhibition potencies towards two cholinergic enzymes, acetyl- and butyrylcholinesterase were evaluated. Most potent derivatives were selected, and kinetic analysis was further carried out to obtain insights into the mechanisms of inhibition of these two enzymes. Further validation of the mode of inhibition of cholinergic enzymes by the two most potent THIQ compounds, 3c and 3i, was performed using fluorescence-quenching titration studies. Molecular docking studies further confirmed the proposed mechanism of enzymes’ inhibition. In silico predictions of physicochemical properties, pharmacokinetics, drug-likeness, and medicinal chemistry friendliness of the selected most potent derivatives were performed using Swiss ADME tool. This was followed by UPLC-assisted log P determination and in vitro BBB permeability studies performed in order to assess the potential of the synthesized compounds to pass the BBB.",
journal = "International Journal of Molecular Sciences",
title = "Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates",
volume = "25",
number = "2",
pages = "1033",
doi = "10.3390/ijms25021033"
}
Jovanović, D., Filipović, A., Janjić, G., Lazarević-Pašti, T., Džambaski, Z., Bondžić, B.,& Bondžić, A.. (2024). Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates. in International Journal of Molecular Sciences, 25(2), 1033.
https://doi.org/10.3390/ijms25021033
Jovanović D, Filipović A, Janjić G, Lazarević-Pašti T, Džambaski Z, Bondžić B, Bondžić A. Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates. in International Journal of Molecular Sciences. 2024;25(2):1033.
doi:10.3390/ijms25021033 .
Jovanović, Dunja, Filipović, Ana, Janjić, Goran, Lazarević-Pašti, Tamara, Džambaski, Zdravko, Bondžić, Bojan, Bondžić, Aleksandra, "Targeting Alzheimer’s Disease: Evaluating the Efficacy of C-1 Functionalized N-Aryl-Tetrahydroisoquinolines as Cholinergic Enzyme Inhibitors and Promising Therapeutic Candidates" in International Journal of Molecular Sciences, 25, no. 2 (2024):1033,
https://doi.org/10.3390/ijms25021033 . .

Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples

Stanković, Vesna; Đurđić, Slađana; Ognjanović, Miloš; Zlatić, Gloria; Stanković, Dalibor

(2024)

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana
AU  - Ognjanović, Miloš
AU  - Zlatić, Gloria
AU  - Stanković, Dalibor
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12670
AB  - In this study, we propose an eco-friendly method for synthesizing cerium tungstate nanoparticles using hydrothermal techniques. We used scanning, transmission electron microscopy, and X-ray diffraction to analyze the morphology of the synthesized nanoparticles. The results showed that the synthesized nanoparticles were uniform and highly crystalline, with a particle size of about 50 nm. The electrocatalytic properties of the nanoparticles were then investigated using cyclic voltammetry and electrochemical impedance spectroscopy. We further used the synthesized nanoparticles to develop an electrochemical sensor based on a carbon paste electrode that can detect hydroquinone. By optimizing the differential pulse voltammetric method, a wide linearity range of 0.4 to 45 µM and a low detection limit of 0.06 µM were obtained. The developed sensor also expressed excellent repeatability (RSD up to 3.8%) and reproducibility (RSD below 5%). Interferences had an insignificant impact on the determination of analytes, making it possible to use this method for monitoring hydroquinone concentrations in tap water. This study introduces a new approach to the chemistry of materials and the environment and demonstrates that a careful selection of components can lead to new horizons in analytical chemistry.
T2  - Sensors
T1  - Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples
VL  - 24
IS  - 2
SP  - 705
DO  - 10.3390/s24020705
ER  - 
@article{
author = "Stanković, Vesna and Đurđić, Slađana and Ognjanović, Miloš and Zlatić, Gloria and Stanković, Dalibor",
year = "2024",
abstract = "In this study, we propose an eco-friendly method for synthesizing cerium tungstate nanoparticles using hydrothermal techniques. We used scanning, transmission electron microscopy, and X-ray diffraction to analyze the morphology of the synthesized nanoparticles. The results showed that the synthesized nanoparticles were uniform and highly crystalline, with a particle size of about 50 nm. The electrocatalytic properties of the nanoparticles were then investigated using cyclic voltammetry and electrochemical impedance spectroscopy. We further used the synthesized nanoparticles to develop an electrochemical sensor based on a carbon paste electrode that can detect hydroquinone. By optimizing the differential pulse voltammetric method, a wide linearity range of 0.4 to 45 µM and a low detection limit of 0.06 µM were obtained. The developed sensor also expressed excellent repeatability (RSD up to 3.8%) and reproducibility (RSD below 5%). Interferences had an insignificant impact on the determination of analytes, making it possible to use this method for monitoring hydroquinone concentrations in tap water. This study introduces a new approach to the chemistry of materials and the environment and demonstrates that a careful selection of components can lead to new horizons in analytical chemistry.",
journal = "Sensors",
title = "Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples",
volume = "24",
number = "2",
pages = "705",
doi = "10.3390/s24020705"
}
Stanković, V., Đurđić, S., Ognjanović, M., Zlatić, G.,& Stanković, D.. (2024). Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples. in Sensors, 24(2), 705.
https://doi.org/10.3390/s24020705
Stanković V, Đurđić S, Ognjanović M, Zlatić G, Stanković D. Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples. in Sensors. 2024;24(2):705.
doi:10.3390/s24020705 .
Stanković, Vesna, Đurđić, Slađana, Ognjanović, Miloš, Zlatić, Gloria, Stanković, Dalibor, "Triangle-Shaped Cerium Tungstate Nanoparticles Used to Modify Carbon Paste Electrode for Sensitive Hydroquinone Detection in Water Samples" in Sensors, 24, no. 2 (2024):705,
https://doi.org/10.3390/s24020705 . .

Skrining pektinaznih proizvođača Aspergillus spp. za upotrebu u izbistravanju soka od jagode

Pavlović, Marija; Momčilović, Miloš; Živković, Sanja; Šokarda Slavić, Marinela V.; Ristović, Marina; Vujčić, Zoran

(Belgrade : Serbian Chemical Society, 2023)

TY  - CONF
AU  - Pavlović, Marija
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Šokarda Slavić, Marinela  V.
AU  - Ristović, Marina
AU  - Vujčić, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13032
AB  - U ovom radu urađen je skrining sojeva Aspergillus spp. koji proizvode pektinaze fermentacijom u tečnom medijumu, a koje su efikasne u izbistravanju soka od jagode. Endo-pektinaze su detektovane difuzionim testom, a ukupna pektinazna aktivnost određena je DNS metodom. Izbistravanje soka nakon tretmana pektinazama određeno je merenjem transmitancije na 660 nm, a povećanje prinosa soka izmereno je centrifugiranjem. Dobijeni rezultati su pokazali da su ove pektinaze visokoefikasne za tretman soka od jagode u poređenju sa komercijalnim pektinaznim preparatom Lafase Fruit.
AB  - In this work, the screening of Aspergillus spp which produce pectinases by fermentation in a liquid medium was performed, as pectinases are effective in clarifying strawberry juice. Endo-pectinases were detected by the diffusion assay, and total pectinase activity was determined by the DNS method. The clarification of juice after pectinase treatment was determined by measuring the transmission at 660 nm, and an increase in juice yield was measured by centrifugation. The results obtained showed that these pectinases are very effective for the treatment of strawberry juice in comparison with the commercial pectinase preparation Lafase Fruit.
PB  - Belgrade : Serbian Chemical Society
C3  - 59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings
T1  - Skrining pektinaznih proizvođača Aspergillus spp. za upotrebu u izbistravanju soka od jagode
T1  - Screening of pectinase-producing Aspergillus spp. for use in strawberry juice clarification
SP  - 55
EP  - 55
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13032
ER  - 
@conference{
author = "Pavlović, Marija and Momčilović, Miloš and Živković, Sanja and Šokarda Slavić, Marinela  V. and Ristović, Marina and Vujčić, Zoran",
year = "2023",
abstract = "U ovom radu urađen je skrining sojeva Aspergillus spp. koji proizvode pektinaze fermentacijom u tečnom medijumu, a koje su efikasne u izbistravanju soka od jagode. Endo-pektinaze su detektovane difuzionim testom, a ukupna pektinazna aktivnost određena je DNS metodom. Izbistravanje soka nakon tretmana pektinazama određeno je merenjem transmitancije na 660 nm, a povećanje prinosa soka izmereno je centrifugiranjem. Dobijeni rezultati su pokazali da su ove pektinaze visokoefikasne za tretman soka od jagode u poređenju sa komercijalnim pektinaznim preparatom Lafase Fruit., In this work, the screening of Aspergillus spp which produce pectinases by fermentation in a liquid medium was performed, as pectinases are effective in clarifying strawberry juice. Endo-pectinases were detected by the diffusion assay, and total pectinase activity was determined by the DNS method. The clarification of juice after pectinase treatment was determined by measuring the transmission at 660 nm, and an increase in juice yield was measured by centrifugation. The results obtained showed that these pectinases are very effective for the treatment of strawberry juice in comparison with the commercial pectinase preparation Lafase Fruit.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings",
title = "Skrining pektinaznih proizvođača Aspergillus spp. za upotrebu u izbistravanju soka od jagode, Screening of pectinase-producing Aspergillus spp. for use in strawberry juice clarification",
pages = "55-55",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13032"
}
Pavlović, M., Momčilović, M., Živković, S., Šokarda Slavić, Marinela  V., Ristović, M.,& Vujčić, Z.. (2023). Skrining pektinaznih proizvođača Aspergillus spp. za upotrebu u izbistravanju soka od jagode. in 59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings
Belgrade : Serbian Chemical Society., 55-55.
https://hdl.handle.net/21.15107/rcub_vinar_13032
Pavlović M, Momčilović M, Živković S, Šokarda Slavić, Marinela  V., Ristović M, Vujčić Z. Skrining pektinaznih proizvođača Aspergillus spp. za upotrebu u izbistravanju soka od jagode. in 59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings. 2023;:55-55.
https://hdl.handle.net/21.15107/rcub_vinar_13032 .
Pavlović, Marija, Momčilović, Miloš, Živković, Sanja, Šokarda Slavić, Marinela  V., Ristović, Marina, Vujčić, Zoran, "Skrining pektinaznih proizvođača Aspergillus spp. za upotrebu u izbistravanju soka od jagode" in 59th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings (2023):55-55,
https://hdl.handle.net/21.15107/rcub_vinar_13032 .

Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization

Janković, Bojan Ž.; Kojić, Marija; Milošević, Milena; Rosić, Milena; Waisi, Hadi; Božilović, Bojana; Manić, Nebojša; Dodevski, Vladimir

(2023)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Kojić, Marija
AU  - Milošević, Milena
AU  - Rosić, Milena
AU  - Waisi, Hadi
AU  - Božilović, Bojana
AU  - Manić, Nebojša
AU  - Dodevski, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11391
AB  - Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.
T2  - Polymers
T1  - Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization
VL  - 15
IS  - 14
SP  - 3054
DO  - 10.3390/polym15143054
ER  - 
@article{
author = "Janković, Bojan Ž. and Kojić, Marija and Milošević, Milena and Rosić, Milena and Waisi, Hadi and Božilović, Bojana and Manić, Nebojša and Dodevski, Vladimir",
year = "2023",
abstract = "Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.",
journal = "Polymers",
title = "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization",
volume = "15",
number = "14",
pages = "3054",
doi = "10.3390/polym15143054"
}
Janković, B. Ž., Kojić, M., Milošević, M., Rosić, M., Waisi, H., Božilović, B., Manić, N.,& Dodevski, V.. (2023). Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers, 15(14), 3054.
https://doi.org/10.3390/polym15143054
Janković BŽ, Kojić M, Milošević M, Rosić M, Waisi H, Božilović B, Manić N, Dodevski V. Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers. 2023;15(14):3054.
doi:10.3390/polym15143054 .
Janković, Bojan Ž., Kojić, Marija, Milošević, Milena, Rosić, Milena, Waisi, Hadi, Božilović, Bojana, Manić, Nebojša, Dodevski, Vladimir, "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization" in Polymers, 15, no. 14 (2023):3054,
https://doi.org/10.3390/polym15143054 . .
1
1

Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase

Šokarda Slavić, Marinela; Kojić, Milan; Margetić, Aleksandra; Ristović, Marina; Pavlović, Marija; Nikolić, Stefan; Vujčić, Zoran

(2023)

TY  - JOUR
AU  - Šokarda Slavić, Marinela
AU  - Kojić, Milan
AU  - Margetić, Aleksandra
AU  - Ristović, Marina
AU  - Pavlović, Marija
AU  - Nikolić, Stefan
AU  - Vujčić, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11438
AB  - The combination of β‐oligosaccharides from enzymatically hydrolysed barley β‐glucan has attracted interest recently due to its positive effects on human health. This study aimed to assess the impact of the endo‐β‐1,3‐1,4‐glucanase enzyme from Bacillus subtilis 168 on improving the nutritional and bioactive properties of barley β‐glucan. A new procedure for the isolation of β‐glucan was developed, at a lower temperature (45 °C), enabling purity from starch contamination, without affecting the yield (6 g β‐glucan from 100 g of barley flour). The endo‐β‐1,3‐1,4‐glucanase is cloned into E. coli pQE_Ek enables the high production and purification (82% yield, 1.8 mg mL −1 and 440 U mg −1 ) of an enzyme identical to the natural one (25.5 kDa). The enzymatic reaction showed high efficiency of β‐glucan degradation by recombinant enzyme, giving a mixture of products (of which 3‐O‐β‐cellobiosyl‐D‐glucose and 3‐O‐β‐cellotriosyl‐D‐glucose are the most abundant), the reduction of viscosity (17%) and increase in antioxidant capacities by 15.2%, 30.9% and 44.0% assessed by ABTS, DPPH and ORAC, respectively. These results indicate the possible application of endo‐β‐1,3‐1,4‐glucanase enzyme in improving the properties of barley β‐glucan used as functional foods.
T2  - International Journal of Food Science & Technology
T1  - Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase
DO  - 10.1111/ijfs.16647
ER  - 
@article{
author = "Šokarda Slavić, Marinela and Kojić, Milan and Margetić, Aleksandra and Ristović, Marina and Pavlović, Marija and Nikolić, Stefan and Vujčić, Zoran",
year = "2023",
abstract = "The combination of β‐oligosaccharides from enzymatically hydrolysed barley β‐glucan has attracted interest recently due to its positive effects on human health. This study aimed to assess the impact of the endo‐β‐1,3‐1,4‐glucanase enzyme from Bacillus subtilis 168 on improving the nutritional and bioactive properties of barley β‐glucan. A new procedure for the isolation of β‐glucan was developed, at a lower temperature (45 °C), enabling purity from starch contamination, without affecting the yield (6 g β‐glucan from 100 g of barley flour). The endo‐β‐1,3‐1,4‐glucanase is cloned into E. coli pQE_Ek enables the high production and purification (82% yield, 1.8 mg mL −1 and 440 U mg −1 ) of an enzyme identical to the natural one (25.5 kDa). The enzymatic reaction showed high efficiency of β‐glucan degradation by recombinant enzyme, giving a mixture of products (of which 3‐O‐β‐cellobiosyl‐D‐glucose and 3‐O‐β‐cellotriosyl‐D‐glucose are the most abundant), the reduction of viscosity (17%) and increase in antioxidant capacities by 15.2%, 30.9% and 44.0% assessed by ABTS, DPPH and ORAC, respectively. These results indicate the possible application of endo‐β‐1,3‐1,4‐glucanase enzyme in improving the properties of barley β‐glucan used as functional foods.",
journal = "International Journal of Food Science & Technology",
title = "Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase",
doi = "10.1111/ijfs.16647"
}
Šokarda Slavić, M., Kojić, M., Margetić, A., Ristović, M., Pavlović, M., Nikolić, S.,& Vujčić, Z.. (2023). Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase. in International Journal of Food Science & Technology.
https://doi.org/10.1111/ijfs.16647
Šokarda Slavić M, Kojić M, Margetić A, Ristović M, Pavlović M, Nikolić S, Vujčić Z. Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase. in International Journal of Food Science & Technology. 2023;.
doi:10.1111/ijfs.16647 .
Šokarda Slavić, Marinela, Kojić, Milan, Margetić, Aleksandra, Ristović, Marina, Pavlović, Marija, Nikolić, Stefan, Vujčić, Zoran, "Improvement of nutritional and bioactive properties of barley β‐glucan‐based food products using Bacillus subtilis 168 endo‐β‐1,3‐1,4‐glucanase" in International Journal of Food Science & Technology (2023),
https://doi.org/10.1111/ijfs.16647 . .
1

A closed cycle of sustainable development: Effective removal and desorption of lead and dyes using an oxidized cellulose membrane

Knežević, Nataša; Milanović, Jovana Z.; Veličković, Zlate; Milošević, Milena; Vuksanović, Marija M.; Onjia, Antonije; Marinković, Aleksandar

(2023)

TY  - JOUR
AU  - Knežević, Nataša
AU  - Milanović, Jovana Z.
AU  - Veličković, Zlate
AU  - Milošević, Milena
AU  - Vuksanović, Marija M.
AU  - Onjia, Antonije
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11373
AB  - Oxidized cotton linters, TOCell, were used as an adsorbent or derived membrane there from by linterscross-linking with citric acid. The adsorption/desorption study of Pb2+, methylene blue (MB), and crystalviolet (CV) removal, was performed. Adsorption data fitting, obtained using the Langmuir model, gave116 mg g 1 (Pb2+), 179 mg g 1 (MB) and 482 mg g 1 (CV) at 25 ℃ for TOCell linters, while 101 mg g 1(Pb2+), 165 mg g 1 (MB) and 426 mg g 1 (CV) for TOCell membrane. After desorption dyes were subjectedto photocatalytic degradation while lead was transformed into stable lead phthalate (LP), and furtherused as filler in composites based on unsaturated polyester resins (UPR). UPR was synthesized fromwaste polyethylene terephthalate (PET). Structural characterization was performed using FTIR, SEM,and NMR methods. Composites loaded with acryloyl modified kraft lignin (A-KfL) and/or LP was testedfor tensile strength, Vickers microhardness, and fire resistance (UL-94 V method). The best mechanicaland fireproofing properties were obtained at 15 wt.% A-KfL and 40 wt.% Al(OH)3 addition. The resultsof the toxicity leaching test (TCLP) confirmed the environmentally safe stabilization of desorbed pollutantin the UPR matrix. Application of environmentally friendly membranes, susceptible to easy biodegradation, had low negative effects to the environment.
T2  - Journal of Industrial and Engineering Chemistry
T1  - A closed cycle of sustainable development: Effective removal and desorption of lead and dyes using an oxidized cellulose membrane
VL  - 126
SP  - 520
EP  - 536
DO  - 10.1016/j.jiec.2023.06.041
ER  - 
@article{
author = "Knežević, Nataša and Milanović, Jovana Z. and Veličković, Zlate and Milošević, Milena and Vuksanović, Marija M. and Onjia, Antonije and Marinković, Aleksandar",
year = "2023",
abstract = "Oxidized cotton linters, TOCell, were used as an adsorbent or derived membrane there from by linterscross-linking with citric acid. The adsorption/desorption study of Pb2+, methylene blue (MB), and crystalviolet (CV) removal, was performed. Adsorption data fitting, obtained using the Langmuir model, gave116 mg g 1 (Pb2+), 179 mg g 1 (MB) and 482 mg g 1 (CV) at 25 ℃ for TOCell linters, while 101 mg g 1(Pb2+), 165 mg g 1 (MB) and 426 mg g 1 (CV) for TOCell membrane. After desorption dyes were subjectedto photocatalytic degradation while lead was transformed into stable lead phthalate (LP), and furtherused as filler in composites based on unsaturated polyester resins (UPR). UPR was synthesized fromwaste polyethylene terephthalate (PET). Structural characterization was performed using FTIR, SEM,and NMR methods. Composites loaded with acryloyl modified kraft lignin (A-KfL) and/or LP was testedfor tensile strength, Vickers microhardness, and fire resistance (UL-94 V method). The best mechanicaland fireproofing properties were obtained at 15 wt.% A-KfL and 40 wt.% Al(OH)3 addition. The resultsof the toxicity leaching test (TCLP) confirmed the environmentally safe stabilization of desorbed pollutantin the UPR matrix. Application of environmentally friendly membranes, susceptible to easy biodegradation, had low negative effects to the environment.",
journal = "Journal of Industrial and Engineering Chemistry",
title = "A closed cycle of sustainable development: Effective removal and desorption of lead and dyes using an oxidized cellulose membrane",
volume = "126",
pages = "520-536",
doi = "10.1016/j.jiec.2023.06.041"
}
Knežević, N., Milanović, J. Z., Veličković, Z., Milošević, M., Vuksanović, M. M., Onjia, A.,& Marinković, A.. (2023). A closed cycle of sustainable development: Effective removal and desorption of lead and dyes using an oxidized cellulose membrane. in Journal of Industrial and Engineering Chemistry, 126, 520-536.
https://doi.org/10.1016/j.jiec.2023.06.041
Knežević N, Milanović JZ, Veličković Z, Milošević M, Vuksanović MM, Onjia A, Marinković A. A closed cycle of sustainable development: Effective removal and desorption of lead and dyes using an oxidized cellulose membrane. in Journal of Industrial and Engineering Chemistry. 2023;126:520-536.
doi:10.1016/j.jiec.2023.06.041 .
Knežević, Nataša, Milanović, Jovana Z., Veličković, Zlate, Milošević, Milena, Vuksanović, Marija M., Onjia, Antonije, Marinković, Aleksandar, "A closed cycle of sustainable development: Effective removal and desorption of lead and dyes using an oxidized cellulose membrane" in Journal of Industrial and Engineering Chemistry, 126 (2023):520-536,
https://doi.org/10.1016/j.jiec.2023.06.041 . .
2
1

Ispitivanje mehaničkih svojstava regranulata PVC-a sa dodatkom plastifikatora iz otpadnog PET-a

Vuksanović, Marija M.; Milošević, Milena; Knežević, Nataša; Egelja, Adela; Janković-Mandić, Ljiljana; Mladenović, Ivana; Marinković, Aleksandar

(2023)

TY  - JOUR
AU  - Vuksanović, Marija M.
AU  - Milošević, Milena
AU  - Knežević, Nataša
AU  - Egelja, Adela
AU  - Janković-Mandić, Ljiljana
AU  - Mladenović, Ivana
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11444
AB  - Predmet ovog istraživanja je postupak proizvodnje regranulata polivinil hlorida (PVC) korišćenjem plastifikatora sintetisanog iz recikliranog poli(etilen tereftalata) (PET). Na ovaj način je sintetisan plastifikator koji ne predstavlja rizik po zdravlje ljudi i životnu sredinu u skladu sa prinicima hemijskog lizinga i zelene hemije. Dobijeni plastifikator je okarakterisan primenom elementalne analize, FTIR, i NMR spektroskopije i određivanjem hidroksilnog i kiselinskog broja. Ispitivana su mehanička svojstva materijala dobijenih na bazi recikliranog PVC i plastifikatora iz PET-a prema standardnim metodama.
AB  - The subject of this research is the production process of polyvinyl chloride (PVC) regranulate using a plasticizer synthesized from recycled poly(ethylene terephthalate) (PET). In this way, a plasticizer was synthesized that does not pose a risk to human health and the environment in accordance with the principles of chemical leasing and green chemistry. The obtained plasticizer was characterized using elemental analysis, FTIR, and NMR spectroscopy and determination of hydroxyl and acid number. The mechanical properties of materials obtained on the basis of recycled PVC and plasticizers from PET were tested according to standard methods.
T2  - Tehnika
T1  - Ispitivanje mehaničkih svojstava regranulata PVC-a sa dodatkom plastifikatora iz otpadnog PET-a
T1  - Testing of the mechanical properties of reggranulate PVC with the addition of plasticizer from waste PET
VL  - 78
IS  - 4
SP  - 389
EP  - 394
DO  - 10.5937/tehnika2304389V
ER  - 
@article{
author = "Vuksanović, Marija M. and Milošević, Milena and Knežević, Nataša and Egelja, Adela and Janković-Mandić, Ljiljana and Mladenović, Ivana and Marinković, Aleksandar",
year = "2023",
abstract = "Predmet ovog istraživanja je postupak proizvodnje regranulata polivinil hlorida (PVC) korišćenjem plastifikatora sintetisanog iz recikliranog poli(etilen tereftalata) (PET). Na ovaj način je sintetisan plastifikator koji ne predstavlja rizik po zdravlje ljudi i životnu sredinu u skladu sa prinicima hemijskog lizinga i zelene hemije. Dobijeni plastifikator je okarakterisan primenom elementalne analize, FTIR, i NMR spektroskopije i određivanjem hidroksilnog i kiselinskog broja. Ispitivana su mehanička svojstva materijala dobijenih na bazi recikliranog PVC i plastifikatora iz PET-a prema standardnim metodama., The subject of this research is the production process of polyvinyl chloride (PVC) regranulate using a plasticizer synthesized from recycled poly(ethylene terephthalate) (PET). In this way, a plasticizer was synthesized that does not pose a risk to human health and the environment in accordance with the principles of chemical leasing and green chemistry. The obtained plasticizer was characterized using elemental analysis, FTIR, and NMR spectroscopy and determination of hydroxyl and acid number. The mechanical properties of materials obtained on the basis of recycled PVC and plasticizers from PET were tested according to standard methods.",
journal = "Tehnika",
title = "Ispitivanje mehaničkih svojstava regranulata PVC-a sa dodatkom plastifikatora iz otpadnog PET-a, Testing of the mechanical properties of reggranulate PVC with the addition of plasticizer from waste PET",
volume = "78",
number = "4",
pages = "389-394",
doi = "10.5937/tehnika2304389V"
}
Vuksanović, M. M., Milošević, M., Knežević, N., Egelja, A., Janković-Mandić, L., Mladenović, I.,& Marinković, A.. (2023). Ispitivanje mehaničkih svojstava regranulata PVC-a sa dodatkom plastifikatora iz otpadnog PET-a. in Tehnika, 78(4), 389-394.
https://doi.org/10.5937/tehnika2304389V
Vuksanović MM, Milošević M, Knežević N, Egelja A, Janković-Mandić L, Mladenović I, Marinković A. Ispitivanje mehaničkih svojstava regranulata PVC-a sa dodatkom plastifikatora iz otpadnog PET-a. in Tehnika. 2023;78(4):389-394.
doi:10.5937/tehnika2304389V .
Vuksanović, Marija M., Milošević, Milena, Knežević, Nataša, Egelja, Adela, Janković-Mandić, Ljiljana, Mladenović, Ivana, Marinković, Aleksandar, "Ispitivanje mehaničkih svojstava regranulata PVC-a sa dodatkom plastifikatora iz otpadnog PET-a" in Tehnika, 78, no. 4 (2023):389-394,
https://doi.org/10.5937/tehnika2304389V . .

Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles

Salah Adeen Embirsh, Hifa; Stajčić, Ivana; Gržetić, Jelena; Mladenović, Ivana O.; Anđelković, Boban; Marinković, Aleksandar; Vuksanović, Marija M.

(2023)

TY  - JOUR
AU  - Salah Adeen Embirsh, Hifa
AU  - Stajčić, Ivana
AU  - Gržetić, Jelena
AU  - Mladenović, Ivana O.
AU  - Anđelković, Boban
AU  - Marinković, Aleksandar
AU  - Vuksanović, Marija M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11638
AB  - This paper presents sustainable technology for environmentally friendly composite production. Biobased unsaturated polyester resin (b-UPR), synthesized from waste polyethylene terephthalate (PET) glycosylate and renewable origin maleic anhydride (MAnh) and propylene glycol(PG), was reinforced with unmodified and vinyl-modified biosilica nanoparticles obtained fromrice husk. The structural and morphological properties of the obtained particles, b-UPR, as well ascomposites, were characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magneticresonance spectroscopy (NMR), scanning electron microscopy (SEM), and transmission electronmicroscopy (TEM) techniques. The study of the influence of biosilica modification on the mechanicalproperties of composites was supported by hardness modeling. Improvement of the tensile strengthof the b-UPR-based composite at 2.5 wt.% addition of biosilica modified with vinyl silane, named“b-UPR/SiO2-V” composite, has been achieved with 88% increase. The thermal aging process appliedto the b-UPR/SiO2-V composite, which simulates use over the product’s lifetime, leads to the deterioration of composites that were used as fillers in commercial unsaturated polyester resin (c-UPR).The grinded artificially aged b-UPR composites were used as filler in c-UPR for the production of atable top layer with outstanding mechanical properties, i.e., impact resistance and microhardness, aswell as fire resistance rated in the V-0 category according to the UL-94 test. Developing sustainablecomposites that are chemically synthesized from renewable sources is important from the aspect ofpreserving the environment and existing resources as well as the extending their life cycle.
T2  - Polymers
T1  - Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles
VL  - 15
IS  - 18
SP  - 3756
DO  - 10.3390/polym15183756
ER  - 
@article{
author = "Salah Adeen Embirsh, Hifa and Stajčić, Ivana and Gržetić, Jelena and Mladenović, Ivana O. and Anđelković, Boban and Marinković, Aleksandar and Vuksanović, Marija M.",
year = "2023",
abstract = "This paper presents sustainable technology for environmentally friendly composite production. Biobased unsaturated polyester resin (b-UPR), synthesized from waste polyethylene terephthalate (PET) glycosylate and renewable origin maleic anhydride (MAnh) and propylene glycol(PG), was reinforced with unmodified and vinyl-modified biosilica nanoparticles obtained fromrice husk. The structural and morphological properties of the obtained particles, b-UPR, as well ascomposites, were characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magneticresonance spectroscopy (NMR), scanning electron microscopy (SEM), and transmission electronmicroscopy (TEM) techniques. The study of the influence of biosilica modification on the mechanicalproperties of composites was supported by hardness modeling. Improvement of the tensile strengthof the b-UPR-based composite at 2.5 wt.% addition of biosilica modified with vinyl silane, named“b-UPR/SiO2-V” composite, has been achieved with 88% increase. The thermal aging process appliedto the b-UPR/SiO2-V composite, which simulates use over the product’s lifetime, leads to the deterioration of composites that were used as fillers in commercial unsaturated polyester resin (c-UPR).The grinded artificially aged b-UPR composites were used as filler in c-UPR for the production of atable top layer with outstanding mechanical properties, i.e., impact resistance and microhardness, aswell as fire resistance rated in the V-0 category according to the UL-94 test. Developing sustainablecomposites that are chemically synthesized from renewable sources is important from the aspect ofpreserving the environment and existing resources as well as the extending their life cycle.",
journal = "Polymers",
title = "Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles",
volume = "15",
number = "18",
pages = "3756",
doi = "10.3390/polym15183756"
}
Salah Adeen Embirsh, H., Stajčić, I., Gržetić, J., Mladenović, I. O., Anđelković, B., Marinković, A.,& Vuksanović, M. M.. (2023). Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles. in Polymers, 15(18), 3756.
https://doi.org/10.3390/polym15183756
Salah Adeen Embirsh H, Stajčić I, Gržetić J, Mladenović IO, Anđelković B, Marinković A, Vuksanović MM. Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles. in Polymers. 2023;15(18):3756.
doi:10.3390/polym15183756 .
Salah Adeen Embirsh, Hifa, Stajčić, Ivana, Gržetić, Jelena, Mladenović, Ivana O., Anđelković, Boban, Marinković, Aleksandar, Vuksanović, Marija M., "Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles" in Polymers, 15, no. 18 (2023):3756,
https://doi.org/10.3390/polym15183756 . .
3
2

Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles

Mladenović, Ivana O.; Vuksanović, Marija M.; Dimitrijević, Stevan P.; Vasilić, Rastko; Radojević, Vesna J.; Vasiljević-Radović, Dana G.; Nikolić, Nebojša D.

(2023)

TY  - JOUR
AU  - Mladenović, Ivana O.
AU  - Vuksanović, Marija M.
AU  - Dimitrijević, Stevan P.
AU  - Vasilić, Rastko
AU  - Radojević, Vesna J.
AU  - Vasiljević-Radović, Dana G.
AU  - Nikolić, Nebojša D.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12396
AB  - Copper from sulfate baths without and with added inorganic pigment particles based on strontium aluminate doped with europium and dysprosium (SrAl2O4: Eu2+, Dy3+) was electrodeposited on a brass cathode by a galvanostatic regime. Morphological, structural, and roughness analysis of the pigment particles, the pure (pigment-free) Cu coating, and the Cu coatings with incorporated pigment particles were performed using SEM, XRD, and AFM techniques, respectively. Hardness and creep resistance were considered for the examination of the mechanical properties of the Cu coatings, applying Chicot–Lesage (for hardness) and Sargent–Ashby (for creep resistance) mathematical models. The wettability of the Cu coatings was examined by the static sessile drop method by a measurement of the water contact angle. The incorporation of pigment particles in the Cu deposits did not significantly affect the morphology or texture of the coatings, while the roughness of the deposits rose with the rise in pigment particle concentrations. The hardness of the Cu coatings also increased with the increasing concentration of pigments and was greater than that obtained for the pigment-free Cu coating. The presence of the pigments caused a change in the wettability of the Cu coatings from hydrophilic (for the pigment-free Cu coating) to hydrophobic (for Cu coatings with incorporated particles) surface areas.
T2  - Metals
T1  - Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles
VL  - 13
IS  - 12
SP  - 1979
DO  - 10.3390/met13121979
ER  - 
@article{
author = "Mladenović, Ivana O. and Vuksanović, Marija M. and Dimitrijević, Stevan P. and Vasilić, Rastko and Radojević, Vesna J. and Vasiljević-Radović, Dana G. and Nikolić, Nebojša D.",
year = "2023",
abstract = "Copper from sulfate baths without and with added inorganic pigment particles based on strontium aluminate doped with europium and dysprosium (SrAl2O4: Eu2+, Dy3+) was electrodeposited on a brass cathode by a galvanostatic regime. Morphological, structural, and roughness analysis of the pigment particles, the pure (pigment-free) Cu coating, and the Cu coatings with incorporated pigment particles were performed using SEM, XRD, and AFM techniques, respectively. Hardness and creep resistance were considered for the examination of the mechanical properties of the Cu coatings, applying Chicot–Lesage (for hardness) and Sargent–Ashby (for creep resistance) mathematical models. The wettability of the Cu coatings was examined by the static sessile drop method by a measurement of the water contact angle. The incorporation of pigment particles in the Cu deposits did not significantly affect the morphology or texture of the coatings, while the roughness of the deposits rose with the rise in pigment particle concentrations. The hardness of the Cu coatings also increased with the increasing concentration of pigments and was greater than that obtained for the pigment-free Cu coating. The presence of the pigments caused a change in the wettability of the Cu coatings from hydrophilic (for the pigment-free Cu coating) to hydrophobic (for Cu coatings with incorporated particles) surface areas.",
journal = "Metals",
title = "Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles",
volume = "13",
number = "12",
pages = "1979",
doi = "10.3390/met13121979"
}
Mladenović, I. O., Vuksanović, M. M., Dimitrijević, S. P., Vasilić, R., Radojević, V. J., Vasiljević-Radović, D. G.,& Nikolić, N. D.. (2023). Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles. in Metals, 13(12), 1979.
https://doi.org/10.3390/met13121979
Mladenović IO, Vuksanović MM, Dimitrijević SP, Vasilić R, Radojević VJ, Vasiljević-Radović DG, Nikolić ND. Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles. in Metals. 2023;13(12):1979.
doi:10.3390/met13121979 .
Mladenović, Ivana O., Vuksanović, Marija M., Dimitrijević, Stevan P., Vasilić, Rastko, Radojević, Vesna J., Vasiljević-Radović, Dana G., Nikolić, Nebojša D., "Mechanical Properties of Electrolytically Produced Copper Coatings Reinforced with Pigment Particles" in Metals, 13, no. 12 (2023):1979,
https://doi.org/10.3390/met13121979 . .
1

BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties

Šuljagić, Marija; Petronijević, Ivan; Mirković, Miljana M.; Kremenović, Aleksandar S.; Džunuzović, Adis; Pavlović, Vladimir B.; Kalezić-Glišović, Aleksandra; Anđelković, Ljubica

(2023)

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Petronijević, Ivan
AU  - Mirković, Miljana M.
AU  - Kremenović, Aleksandar S.
AU  - Džunuzović, Adis
AU  - Pavlović, Vladimir B.
AU  - Kalezić-Glišović, Aleksandra
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10690
AB  - To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.
T2  - Inorganics
T1  - BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
VL  - 11
IS  - 2
SP  - 51
DO  - 10.3390/inorganics11020051
ER  - 
@article{
author = "Šuljagić, Marija and Petronijević, Ivan and Mirković, Miljana M. and Kremenović, Aleksandar S. and Džunuzović, Adis and Pavlović, Vladimir B. and Kalezić-Glišović, Aleksandra and Anđelković, Ljubica",
year = "2023",
abstract = "To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.",
journal = "Inorganics",
title = "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties",
volume = "11",
number = "2",
pages = "51",
doi = "10.3390/inorganics11020051"
}
Šuljagić, M., Petronijević, I., Mirković, M. M., Kremenović, A. S., Džunuzović, A., Pavlović, V. B., Kalezić-Glišović, A.,& Anđelković, L.. (2023). BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics, 11(2), 51.
https://doi.org/10.3390/inorganics11020051
Šuljagić M, Petronijević I, Mirković MM, Kremenović AS, Džunuzović A, Pavlović VB, Kalezić-Glišović A, Anđelković L. BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics. 2023;11(2):51.
doi:10.3390/inorganics11020051 .
Šuljagić, Marija, Petronijević, Ivan, Mirković, Miljana M., Kremenović, Aleksandar S., Džunuzović, Adis, Pavlović, Vladimir B., Kalezić-Glišović, Aleksandra, Anđelković, Ljubica, "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, 11, no. 2 (2023):51,
https://doi.org/10.3390/inorganics11020051 . .
2
1

Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition

Anđelković, Ljubica; Šuljagić, Marija; Mirković, Miljana; Pavlović, Vera P.; Petronijević, Ivan; Stanković, Dalibor M.; Jeremić, Dejan; Uskoković, Vuk

(2023)

TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Mirković, Miljana
AU  - Pavlović, Vera P.
AU  - Petronijević, Ivan
AU  - Stanković, Dalibor M.
AU  - Jeremić, Dejan
AU  - Uskoković, Vuk
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10935
AB  - The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale. © 2023 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition
VL  - 49
IS  - 14, Part A
SP  - 23491
EP  - 23498
DO  - 10.1016/j.ceramint.2023.04.182
ER  - 
@article{
author = "Anđelković, Ljubica and Šuljagić, Marija and Mirković, Miljana and Pavlović, Vera P. and Petronijević, Ivan and Stanković, Dalibor M. and Jeremić, Dejan and Uskoković, Vuk",
year = "2023",
abstract = "The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale. © 2023 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition",
volume = "49",
number = "14, Part A",
pages = "23491-23498",
doi = "10.1016/j.ceramint.2023.04.182"
}
Anđelković, L., Šuljagić, M., Mirković, M., Pavlović, V. P., Petronijević, I., Stanković, D. M., Jeremić, D.,& Uskoković, V.. (2023). Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International, 49(14, Part A), 23491-23498.
https://doi.org/10.1016/j.ceramint.2023.04.182
Anđelković L, Šuljagić M, Mirković M, Pavlović VP, Petronijević I, Stanković DM, Jeremić D, Uskoković V. Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International. 2023;49(14, Part A):23491-23498.
doi:10.1016/j.ceramint.2023.04.182 .
Anđelković, Ljubica, Šuljagić, Marija, Mirković, Miljana, Pavlović, Vera P., Petronijević, Ivan, Stanković, Dalibor M., Jeremić, Dejan, Uskoković, Vuk, "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition" in Ceramics International, 49, no. 14, Part A (2023):23491-23498,
https://doi.org/10.1016/j.ceramint.2023.04.182 . .

Understanding the Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite Composites

Šuljagić, Marija; Kremenović, Aleksandar; Petronijević, Ivan; Džunuzović, Adis; Mirković, Miljana; Pavlović, Vladimir; Anđelković, Ljubica

(2023)

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Kremenović, Aleksandar
AU  - Petronijević, Ivan
AU  - Džunuzović, Adis
AU  - Mirković, Miljana
AU  - Pavlović, Vladimir
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11726
AB  - To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300°C had better performances than those sintered at 1150°C. The composite synthesized by thermal decomposition and sintered at 1300 °C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic.
AB  - У циљу испитивања утицаја методе синтезе као и температуре синтеровања на функционална својства керамике перовскитно/спинелне структуре, синтетисани су BaTiO3/CoFe2O4 композити методама термалне декомпозиције, копреципитације и микроемулзије, а затим синтеровани на 1150 °C и 1300 °C. Фазни састав и морфологија синтетисаних узорака детаљно су испитани пре и после синтеровања помоћу рендгенске дифракције на праху (XRPD) и скенирајуће електронске микроскпије (SEM) спрегнуте са елекрон дисперзивном спектроскопијом (EDS). Изведена су опсежна испитивања како диелектричних, тако и фероелектричних својстава датих композита. У већини случајева узорци синтеровани на 1300 °C показали су боља својства од узорака синтерованих на 1150 °C. Композит синтетисан методом термалне декомпозиције и синтерован на 1300 °C издваја се од осталих синтетисаних BaTiO3/CoFe2O4 узорака захваљујући великој стабилносту у широком фреквентном опсегу и малим струјама цурења. Добијени резултати недвосмислено указују да истакнути композит може бити успешно примењен као функционални мултифероик.
T2  - Science of Sintering
T1  - Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites
VL  - 55
SP  - 367
EP  - 381
DO  - 10.2298/SOS220512013S
ER  - 
@article{
author = "Šuljagić, Marija and Kremenović, Aleksandar and Petronijević, Ivan and Džunuzović, Adis and Mirković, Miljana and Pavlović, Vladimir and Anđelković, Ljubica",
year = "2023",
abstract = "To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300°C had better performances than those sintered at 1150°C. The composite synthesized by thermal decomposition and sintered at 1300 °C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic., У циљу испитивања утицаја методе синтезе као и температуре синтеровања на функционална својства керамике перовскитно/спинелне структуре, синтетисани су BaTiO3/CoFe2O4 композити методама термалне декомпозиције, копреципитације и микроемулзије, а затим синтеровани на 1150 °C и 1300 °C. Фазни састав и морфологија синтетисаних узорака детаљно су испитани пре и после синтеровања помоћу рендгенске дифракције на праху (XRPD) и скенирајуће електронске микроскпије (SEM) спрегнуте са елекрон дисперзивном спектроскопијом (EDS). Изведена су опсежна испитивања како диелектричних, тако и фероелектричних својстава датих композита. У већини случајева узорци синтеровани на 1300 °C показали су боља својства од узорака синтерованих на 1150 °C. Композит синтетисан методом термалне декомпозиције и синтерован на 1300 °C издваја се од осталих синтетисаних BaTiO3/CoFe2O4 узорака захваљујући великој стабилносту у широком фреквентном опсегу и малим струјама цурења. Добијени резултати недвосмислено указују да истакнути композит може бити успешно примењен као функционални мултифероик.",
journal = "Science of Sintering",
title = "Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites",
volume = "55",
pages = "367-381",
doi = "10.2298/SOS220512013S"
}
Šuljagić, M., Kremenović, A., Petronijević, I., Džunuzović, A., Mirković, M., Pavlović, V.,& Anđelković, L.. (2023). Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites. in Science of Sintering, 55, 367-381.
https://doi.org/10.2298/SOS220512013S
Šuljagić M, Kremenović A, Petronijević I, Džunuzović A, Mirković M, Pavlović V, Anđelković L. Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites. in Science of Sintering. 2023;55:367-381.
doi:10.2298/SOS220512013S .
Šuljagić, Marija, Kremenović, Aleksandar, Petronijević, Ivan, Džunuzović, Adis, Mirković, Miljana, Pavlović, Vladimir, Anđelković, Ljubica, "Understanding the  Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite  Composites" in Science of Sintering, 55 (2023):367-381,
https://doi.org/10.2298/SOS220512013S . .

Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties

Gojgić-Cvijović, Gordana; Jakovljević, Dragica; Živković, Ljiljana; Ćosović, Vladan; Pavlović, Vladimir B.; Nikolić, Ivana; Maravić, Nikola; Dokić, Ljubica

(2023)

TY  - JOUR
AU  - Gojgić-Cvijović, Gordana
AU  - Jakovljević, Dragica
AU  - Živković, Ljiljana
AU  - Ćosović, Vladan
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Ivana
AU  - Maravić, Nikola
AU  - Dokić, Ljubica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11023
AB  - In this study, levan from Bacillus licheniformis NS032 was modified in an aqueous medium by octenyl succinic anhydride (OSA), and the properties of the obtained derivatives were studied. The maximum efficiency in the synthesis reaction was achieved at 40 °C and a polysaccharide slurry concentration of 30 %. Increasing the reagent concentration (2–10 %) led to an increase in the degree of substitution (0.016–0.048). Structures of derivatives were confirmed by FTIR and NMR. Scanning electronic microscopy, thermogravimetry, and dynamic light scattering analyses showed that the derivatives with degrees of substitution of 0.025 and 0.036 retained levan's porous structure and thermostability and showed better colloidal stability than the native polysaccharide. The intrinsic viscosity of derivatives increased upon modification, while the surface tension of the 1 % solution was lowered to 61 mN/m. Oil-in-water emulsions prepared with sunflower oil (10 % and 20 %) by mechanical homogenization and 2 and 10 % derivatives in the continuous phase showed mean oil droplet sizes of 106–195 μm, while the distribution curves exhibited bimodal character. The studied derivatives have a good capacity to stabilize emulsions, as they have a creaming index ranging from 73 % to 94 %. The OSA-modified levans could have potential applications in new formulations of emulsion-based systems.
T2  - International Journal of Biological Macromolecules
T1  - Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties
VL  - 242
SP  - 124837
DO  - 10.1016/j.ijbiomac.2023.124837
ER  - 
@article{
author = "Gojgić-Cvijović, Gordana and Jakovljević, Dragica and Živković, Ljiljana and Ćosović, Vladan and Pavlović, Vladimir B. and Nikolić, Ivana and Maravić, Nikola and Dokić, Ljubica",
year = "2023",
abstract = "In this study, levan from Bacillus licheniformis NS032 was modified in an aqueous medium by octenyl succinic anhydride (OSA), and the properties of the obtained derivatives were studied. The maximum efficiency in the synthesis reaction was achieved at 40 °C and a polysaccharide slurry concentration of 30 %. Increasing the reagent concentration (2–10 %) led to an increase in the degree of substitution (0.016–0.048). Structures of derivatives were confirmed by FTIR and NMR. Scanning electronic microscopy, thermogravimetry, and dynamic light scattering analyses showed that the derivatives with degrees of substitution of 0.025 and 0.036 retained levan's porous structure and thermostability and showed better colloidal stability than the native polysaccharide. The intrinsic viscosity of derivatives increased upon modification, while the surface tension of the 1 % solution was lowered to 61 mN/m. Oil-in-water emulsions prepared with sunflower oil (10 % and 20 %) by mechanical homogenization and 2 and 10 % derivatives in the continuous phase showed mean oil droplet sizes of 106–195 μm, while the distribution curves exhibited bimodal character. The studied derivatives have a good capacity to stabilize emulsions, as they have a creaming index ranging from 73 % to 94 %. The OSA-modified levans could have potential applications in new formulations of emulsion-based systems.",
journal = "International Journal of Biological Macromolecules",
title = "Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties",
volume = "242",
pages = "124837",
doi = "10.1016/j.ijbiomac.2023.124837"
}
Gojgić-Cvijović, G., Jakovljević, D., Živković, L., Ćosović, V., Pavlović, V. B., Nikolić, I., Maravić, N.,& Dokić, L.. (2023). Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties. in International Journal of Biological Macromolecules, 242, 124837.
https://doi.org/10.1016/j.ijbiomac.2023.124837
Gojgić-Cvijović G, Jakovljević D, Živković L, Ćosović V, Pavlović VB, Nikolić I, Maravić N, Dokić L. Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties. in International Journal of Biological Macromolecules. 2023;242:124837.
doi:10.1016/j.ijbiomac.2023.124837 .
Gojgić-Cvijović, Gordana, Jakovljević, Dragica, Živković, Ljiljana, Ćosović, Vladan, Pavlović, Vladimir B., Nikolić, Ivana, Maravić, Nikola, Dokić, Ljubica, "Synthesis of octenyl succinic anhydride-modified levan and investigation of its microstructural, physicochemical, and emulsifying properties" in International Journal of Biological Macromolecules, 242 (2023):124837,
https://doi.org/10.1016/j.ijbiomac.2023.124837 . .
1