TY  - JOUR
AU  - Maslovara, Slađana
AU  - Vasić-Anićijević, Dragana
AU  - Šaponjić, Aleksandra
AU  - Đurđević-Milošević, Dragica
AU  - Nikolić, Željka
AU  - Nikolić, Vladimir
AU  - Marčeta-Kaninski, Milica
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13100
AB  - Electrodeposition of selected d-metals by in-situ electrodeposition as a method for improvement of electrocatalytic activity of conventional electrodes for alkaline hydrogen evolution has been attracting the attention of researchers for about two decades. The modification of metal electrodes by ionic activators as a combination of two (binary systems) or three (ternary systems) d-metal complexes added in electrolytic solution were represented in many studies. Better catalytic performances and higher energy efficiency compared to the common electrodes is provided by a number of affordable and inexpensive solutions resulting from this research. Based on the combinations of selected d-metal complexes added in-situ to the electrolyte during electrolysis, this work provides a systematic overview of the binary and ternary systems of ionic activators, that contribute to energy savings in alkaline electrolysers, with the particular attention paid to the discussion of similarities and universal principles. Theoretical background and the fundamental properties that lay beyond the observed improvements of electrode performance upon activation by ionic activators is also represented.
T2  - Science of Sintering
T1  - Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers
IS  - InPress
DO  - 10.2298/SOS231116001M
ER  - 

@article{
author = "Maslovara, Slađana and Vasić-Anićijević, Dragana and Šaponjić, Aleksandra and Đurđević-Milošević, Dragica and Nikolić, Željka and Nikolić, Vladimir and Marčeta-Kaninski, Milica",
year = "2024",
abstract = "Electrodeposition of selected d-metals by in-situ electrodeposition as a method for improvement of electrocatalytic activity of conventional electrodes for alkaline hydrogen evolution has been attracting the attention of researchers for about two decades. The modification of metal electrodes by ionic activators as a combination of two (binary systems) or three (ternary systems) d-metal complexes added in electrolytic solution were represented in many studies. Better catalytic performances and higher energy efficiency compared to the common electrodes is provided by a number of affordable and inexpensive solutions resulting from this research. Based on the combinations of selected d-metal complexes added in-situ to the electrolyte during electrolysis, this work provides a systematic overview of the binary and ternary systems of ionic activators, that contribute to energy savings in alkaline electrolysers, with the particular attention paid to the discussion of similarities and universal principles. Theoretical background and the fundamental properties that lay beyond the observed improvements of electrode performance upon activation by ionic activators is also represented.",
journal = "Science of Sintering",
title = "Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers",
number = "InPress",
doi = "10.2298/SOS231116001M"
}

Maslovara, S., Vasić-Anićijević, D., Šaponjić, A., Đurđević-Milošević, D., Nikolić, Ž., Nikolić, V.,& Marčeta-Kaninski, M.. (2024). Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers. in Science of Sintering(InPress).
https://doi.org/10.2298/SOS231116001M

Maslovara S, Vasić-Anićijević D, Šaponjić A, Đurđević-Milošević D, Nikolić Ž, Nikolić V, Marčeta-Kaninski M. Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers. in Science of Sintering. 2024;(InPress).
doi:10.2298/SOS231116001M .

Maslovara, Slađana, Vasić-Anićijević, Dragana, Šaponjić, Aleksandra, Đurđević-Milošević, Dragica, Nikolić, Željka, Nikolić, Vladimir, Marčeta-Kaninski, Milica, "Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers" in Science of Sintering, no. InPress (2024),
https://doi.org/10.2298/SOS231116001M . .

TY  - CONF
AU  - Kokunešoski, Maja
AU  - Šaponjić, Aleksandra
AU  - Baščarević, Zvezdana
AU  - Jovanović, Ivan
AU  - Filipović Tričković, Jelena G.
AU  - Valenta-Šobot, Ana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11280
AB  - Material SBA-15 with all of its particles in the form of regular spheres was synthesised by template method using
Pluronic P123 (non-ionic triblock copolymer) as a surfactant and tetraethoxysilane (TEOS, 98%) as a source of silica.
The synthesis of spherical SBA-15 was carried out in acidic conditions according to method proposed by Zhao et al.
Instead of expensive commercial cetyltrimethylammonium bromide as a co-surfactant, a spent HCl solution obtained
after the chemical treatment of clay in an aqueous solution of HCl was used. The mixture was aged at a higher
temperature. After that, the spherical SBA-15 was made by drying at room temperature after washing with distilled
water and then calcining in flowing air to decompose the triblock copolymer. The continual presence of spheres
of diameters around 2 μm in the entire SBA-15 was confirmed by scanning electron microscopy. The Energy-dispersive
X-ray spectroscopy confirmed that the spheres consisted only of SiO2 in composition. In addition, X-ray diffraction and
Fourier-transform infrared spectroscopy methods were used to characterise SBA-15 material. To assess the cytotoxic
effects of newly synthesised SBA-15 material, HEK 293 cells were treated with particles and extracts obtained from
particles incubated 24 hours at 37 °C in serum-free DMEM medium and DMEM with 10% serum. Cells were treated
with concentrations of 100, 250, and 500 µg/mL for 72 hours. All treatments reduced cell viability in a concentrationdependent manner (p<0.001). Cytotoxicity was more pronounced in particle treatment, indicating that mechanical
damage was induced in cells, whereas the extraction process influences the level of toxicity since the sera-free medium
had the mildest effect. To acquire safe particles for human use, additional synthesis optimisation is required.
PB  - Association of Metallurgical Engineers of Serbia (AMES)
C3  - MME SEE : 5th Metallurgical and Materials Engineering Congress of South-East Europe : book of abstracts; June 7-10, Trebinje, Bosnia and Herzegovina
T1  - Preliminary cytotoxicity testing of newly synthesised SBA-15 material
SP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11280
ER  - 

@conference{
author = "Kokunešoski, Maja and Šaponjić, Aleksandra and Baščarević, Zvezdana and Jovanović, Ivan and Filipović Tričković, Jelena G. and Valenta-Šobot, Ana",
year = "2023",
abstract = "Material SBA-15 with all of its particles in the form of regular spheres was synthesised by template method using
Pluronic P123 (non-ionic triblock copolymer) as a surfactant and tetraethoxysilane (TEOS, 98%) as a source of silica.
The synthesis of spherical SBA-15 was carried out in acidic conditions according to method proposed by Zhao et al.
Instead of expensive commercial cetyltrimethylammonium bromide as a co-surfactant, a spent HCl solution obtained
after the chemical treatment of clay in an aqueous solution of HCl was used. The mixture was aged at a higher
temperature. After that, the spherical SBA-15 was made by drying at room temperature after washing with distilled
water and then calcining in flowing air to decompose the triblock copolymer. The continual presence of spheres
of diameters around 2 μm in the entire SBA-15 was confirmed by scanning electron microscopy. The Energy-dispersive
X-ray spectroscopy confirmed that the spheres consisted only of SiO2 in composition. In addition, X-ray diffraction and
Fourier-transform infrared spectroscopy methods were used to characterise SBA-15 material. To assess the cytotoxic
effects of newly synthesised SBA-15 material, HEK 293 cells were treated with particles and extracts obtained from
particles incubated 24 hours at 37 °C in serum-free DMEM medium and DMEM with 10% serum. Cells were treated
with concentrations of 100, 250, and 500 µg/mL for 72 hours. All treatments reduced cell viability in a concentrationdependent manner (p<0.001). Cytotoxicity was more pronounced in particle treatment, indicating that mechanical
damage was induced in cells, whereas the extraction process influences the level of toxicity since the sera-free medium
had the mildest effect. To acquire safe particles for human use, additional synthesis optimisation is required.",
publisher = "Association of Metallurgical Engineers of Serbia (AMES)",
journal = "MME SEE : 5th Metallurgical and Materials Engineering Congress of South-East Europe : book of abstracts; June 7-10, Trebinje, Bosnia and Herzegovina",
title = "Preliminary cytotoxicity testing of newly synthesised SBA-15 material",
pages = "60",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11280"
}

Kokunešoski, M., Šaponjić, A., Baščarević, Z., Jovanović, I., Filipović Tričković, J. G.,& Valenta-Šobot, A.. (2023). Preliminary cytotoxicity testing of newly synthesised SBA-15 material. in MME SEE : 5th Metallurgical and Materials Engineering Congress of South-East Europe : book of abstracts; June 7-10, Trebinje, Bosnia and Herzegovina
Association of Metallurgical Engineers of Serbia (AMES)., 60.
https://hdl.handle.net/21.15107/rcub_vinar_11280

Kokunešoski M, Šaponjić A, Baščarević Z, Jovanović I, Filipović Tričković JG, Valenta-Šobot A. Preliminary cytotoxicity testing of newly synthesised SBA-15 material. in MME SEE : 5th Metallurgical and Materials Engineering Congress of South-East Europe : book of abstracts; June 7-10, Trebinje, Bosnia and Herzegovina. 2023;:60.
https://hdl.handle.net/21.15107/rcub_vinar_11280 .

Kokunešoski, Maja, Šaponjić, Aleksandra, Baščarević, Zvezdana, Jovanović, Ivan, Filipović Tričković, Jelena G., Valenta-Šobot, Ana, "Preliminary cytotoxicity testing of newly synthesised SBA-15 material" in MME SEE : 5th Metallurgical and Materials Engineering Congress of South-East Europe : book of abstracts; June 7-10, Trebinje, Bosnia and Herzegovina (2023):60,
https://hdl.handle.net/21.15107/rcub_vinar_11280 .

TY  - JOUR
AU  - Šaponjić, Aleksandra
AU  - Ilić, Svetlana
AU  - Barudžija, Tanja
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Kokunešoski, Maja
AU  - Matović, Branko
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10852
AB  - In this paper, the effects of the addition of silicon nitride seeds on the phase composition, particle size, and shape of silicon nitride powders obtained by carbothermal reduction-nitridation were studied. Environmentally friendly natural raw material, diatomaceous earth, was used as a Si precursor. Three different carbon sources were used: activated carbon, carbonized sucrose, and carbon cryogel as reducing agents in the molar ratio C/SiO2 = 5. To obtain better-quality Si3N4 powder, the commercial α-Si3N4 powder was added into starting mixtures as seeds in four different quantities. The X-ray diffraction, specific surface area, infrared spectroscopy with Fourier transform, and scanning electron microscopy were employed to characterize the obtained powders. Sucrose as a carbon source enables a major reduction of SiO2 and the onset of β-Si3N4 crystallization at a lower temperature (1350 °C) as well as the complete absence of diatomaceous earth relics. It indicates that the carbothermal reduction-nitridation takes place faster in contrast to the other two carbon sources.
T2  - Journal of the Australian Ceramic Society
T1  - Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon
VL  - 59
SP  - 823
EP  - 835
DO  - 10.1007/s41779-023-00876-w
ER  - 

@article{
author = "Šaponjić, Aleksandra and Ilić, Svetlana and Barudžija, Tanja and Radosavljević-Mihajlović, Ana S. and Kokunešoski, Maja and Matović, Branko",
year = "2023",
abstract = "In this paper, the effects of the addition of silicon nitride seeds on the phase composition, particle size, and shape of silicon nitride powders obtained by carbothermal reduction-nitridation were studied. Environmentally friendly natural raw material, diatomaceous earth, was used as a Si precursor. Three different carbon sources were used: activated carbon, carbonized sucrose, and carbon cryogel as reducing agents in the molar ratio C/SiO2 = 5. To obtain better-quality Si3N4 powder, the commercial α-Si3N4 powder was added into starting mixtures as seeds in four different quantities. The X-ray diffraction, specific surface area, infrared spectroscopy with Fourier transform, and scanning electron microscopy were employed to characterize the obtained powders. Sucrose as a carbon source enables a major reduction of SiO2 and the onset of β-Si3N4 crystallization at a lower temperature (1350 °C) as well as the complete absence of diatomaceous earth relics. It indicates that the carbothermal reduction-nitridation takes place faster in contrast to the other two carbon sources.",
journal = "Journal of the Australian Ceramic Society",
title = "Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon",
volume = "59",
pages = "823-835",
doi = "10.1007/s41779-023-00876-w"
}

Šaponjić, A., Ilić, S., Barudžija, T., Radosavljević-Mihajlović, A. S., Kokunešoski, M.,& Matović, B.. (2023). Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon. in Journal of the Australian Ceramic Society, 59, 823-835.
https://doi.org/10.1007/s41779-023-00876-w

Šaponjić A, Ilić S, Barudžija T, Radosavljević-Mihajlović AS, Kokunešoski M, Matović B. Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon. in Journal of the Australian Ceramic Society. 2023;59:823-835.
doi:10.1007/s41779-023-00876-w .

Šaponjić, Aleksandra, Ilić, Svetlana, Barudžija, Tanja, Radosavljević-Mihajlović, Ana S., Kokunešoski, Maja, Matović, Branko, "Seeded silicon nitride powders obtained by carbothermal reduction—nitridation of diatomite and various sources of carbon" in Journal of the Australian Ceramic Society, 59 (2023):823-835,
https://doi.org/10.1007/s41779-023-00876-w . .

TY  - JOUR
AU  - Kokunešoski, Maja
AU  - Janaćković, Đorđe
AU  - Kićević, Dušan
AU  - Ilić, Svetlana
AU  - Šaponjić, Aleksandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11104
AB  - Effect of methyl methacrylate (MMA) as a binder and heating treatment were investigated to improve green alumina compacts machinability. Properties of green compacts and their corresponding sintered samples prepared with and without MMA were compared. Investigation of green and sintered properties was performed on samples compacted at applied pressures up to 150 MPa. After pressing, samples with MMA were thermally treated at 115oC. The intention was to enhance the polymerization of MMA at a temperature a little higher than the glass transition temperature (Tg = 103oC) of poly (methyl methacrylate). Green compacts with MMA had higher green density values than those without MMA. Sintered samples with MMA had lower values of sintered density and higher values of total porosity; after sintering, relative linear shrinkage was around 15 % for the whole range of applied pressures. The possibility of easily machining the green compacts with MMA produces great possibilities for application in many fields
T2  - Science of Sintering
T1  - The effect of acrylate on the properties and machinability of alumina ceramics
VL  - 55
IS  - 1
SP  - 103
EP  - 113
DO  - 10.2298/SOS2301103K
ER  - 

@article{
author = "Kokunešoski, Maja and Janaćković, Đorđe and Kićević, Dušan and Ilić, Svetlana and Šaponjić, Aleksandra",
year = "2023",
abstract = "Effect of methyl methacrylate (MMA) as a binder and heating treatment were investigated to improve green alumina compacts machinability. Properties of green compacts and their corresponding sintered samples prepared with and without MMA were compared. Investigation of green and sintered properties was performed on samples compacted at applied pressures up to 150 MPa. After pressing, samples with MMA were thermally treated at 115oC. The intention was to enhance the polymerization of MMA at a temperature a little higher than the glass transition temperature (Tg = 103oC) of poly (methyl methacrylate). Green compacts with MMA had higher green density values than those without MMA. Sintered samples with MMA had lower values of sintered density and higher values of total porosity; after sintering, relative linear shrinkage was around 15 % for the whole range of applied pressures. The possibility of easily machining the green compacts with MMA produces great possibilities for application in many fields",
journal = "Science of Sintering",
title = "The effect of acrylate on the properties and machinability of alumina ceramics",
volume = "55",
number = "1",
pages = "103-113",
doi = "10.2298/SOS2301103K"
}

Kokunešoski, M., Janaćković, Đ., Kićević, D., Ilić, S.,& Šaponjić, A.. (2023). The effect of acrylate on the properties and machinability of alumina ceramics. in Science of Sintering, 55(1), 103-113.
https://doi.org/10.2298/SOS2301103K

Kokunešoski M, Janaćković Đ, Kićević D, Ilić S, Šaponjić A. The effect of acrylate on the properties and machinability of alumina ceramics. in Science of Sintering. 2023;55(1):103-113.
doi:10.2298/SOS2301103K .

Kokunešoski, Maja, Janaćković, Đorđe, Kićević, Dušan, Ilić, Svetlana, Šaponjić, Aleksandra, "The effect of acrylate on the properties and machinability of alumina ceramics" in Science of Sintering, 55, no. 1 (2023):103-113,
https://doi.org/10.2298/SOS2301103K . .

TY  - JOUR
AU  - Katnić, Đurica
AU  - Marinović-Cincović, Milena
AU  - Porobić, Slavica
AU  - Vujčić, Ivica
AU  - Šaponjić, Aleksandra
AU  - Sikirić, Biljana
AU  - Živojinović, Dragana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10230
AB  - Redirecting waste biomass back into the economy can reduce their burden on the environment. The use of waste biomass for the production of fuels, value-added materials or natural fillers has significant economic and environmental benefits. Physico-chemical characterization of waste biomass (plum pomace and fig pomace) was done by proximate, elemental, biochemical analysis, FTIR and SEM analysis. The calorific value of both biomasses can be compared with the calorific value of lignite, which rises their potential use as a solid biofuel. The combustion behavior of biomass was investigated by thermal analysis techniques. Based on thermal degradation experiments performed at four heating rates a kinetic analysis of the biomass decomposition process was accomplished. The kinetic study was done using Kissinger method, Ozawa method, Flynn-Wall-Ozawa (FWO) method, Starink method, and Kissinger-Akahira-Sunose (KAS) method. The value of activation energy obtained by different kinetic methods was ∼210 kJ/mol for plum pomace and ∼162 kJ/mol for fig pomace. Estimated activation energy values were used to calculate thermodynamic parameters. In addition to the fact that the obtained results can serve as a useful reference for the design of pyrolysis reactors, this research has ecological significance because it solves the problem of solid waste disposal.
T2  - Journal of Cleaner Production
T1  - Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass
VL  - 352
SP  - 131637
DO  - 10.1016/j.jclepro.2022.131637
ER  - 

@article{
author = "Katnić, Đurica and Marinović-Cincović, Milena and Porobić, Slavica and Vujčić, Ivica and Šaponjić, Aleksandra and Sikirić, Biljana and Živojinović, Dragana",
year = "2022",
abstract = "Redirecting waste biomass back into the economy can reduce their burden on the environment. The use of waste biomass for the production of fuels, value-added materials or natural fillers has significant economic and environmental benefits. Physico-chemical characterization of waste biomass (plum pomace and fig pomace) was done by proximate, elemental, biochemical analysis, FTIR and SEM analysis. The calorific value of both biomasses can be compared with the calorific value of lignite, which rises their potential use as a solid biofuel. The combustion behavior of biomass was investigated by thermal analysis techniques. Based on thermal degradation experiments performed at four heating rates a kinetic analysis of the biomass decomposition process was accomplished. The kinetic study was done using Kissinger method, Ozawa method, Flynn-Wall-Ozawa (FWO) method, Starink method, and Kissinger-Akahira-Sunose (KAS) method. The value of activation energy obtained by different kinetic methods was ∼210 kJ/mol for plum pomace and ∼162 kJ/mol for fig pomace. Estimated activation energy values were used to calculate thermodynamic parameters. In addition to the fact that the obtained results can serve as a useful reference for the design of pyrolysis reactors, this research has ecological significance because it solves the problem of solid waste disposal.",
journal = "Journal of Cleaner Production",
title = "Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass",
volume = "352",
pages = "131637",
doi = "10.1016/j.jclepro.2022.131637"
}

Katnić, Đ., Marinović-Cincović, M., Porobić, S., Vujčić, I., Šaponjić, A., Sikirić, B.,& Živojinović, D.. (2022). Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass. in Journal of Cleaner Production, 352, 131637.
https://doi.org/10.1016/j.jclepro.2022.131637

Katnić Đ, Marinović-Cincović M, Porobić S, Vujčić I, Šaponjić A, Sikirić B, Živojinović D. Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass. in Journal of Cleaner Production. 2022;352:131637.
doi:10.1016/j.jclepro.2022.131637 .

Katnić, Đurica, Marinović-Cincović, Milena, Porobić, Slavica, Vujčić, Ivica, Šaponjić, Aleksandra, Sikirić, Biljana, Živojinović, Dragana, "Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass" in Journal of Cleaner Production, 352 (2022):131637,
https://doi.org/10.1016/j.jclepro.2022.131637 . .

TY  - CONF
AU  - Egelja, Adela
AU  - Savić, Andrija
AU  - Šaponjić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Ilić, Svetlana
AU  - Vuksanović, Marija M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10662
AB  - In present study FEAL-LDH@SIO2 were Used for removing phosphate from aqueous solutions. FeAl-LDH with molar ratio Fe/Al = 3/1 was synthesized by co- precipitation from aqueous solutions in the present of SIO2 PARTICLES. Silica obtained from rice husks were used as a substrate for the deposition of LDH particles. The prepared material was characterized by scanning electron microscope (FE-SEM), X-ray diffraction (XRD), N2 adsorption/desorption isotherms (BET method) and Fourier transform infrared spectroscopy (FTIR). XRD analysis showed that Fe-Al had formed LDH structure. SEM analysis revealed deposition of LDH particles on SIO2 SUBSTRATE. The adsorption characteristics for phosphate uptake of the obtained material were performed. Adsorption experiments were carried out as a function of LDHs dosage with three different mass ratios of LDH/silica = 1/1, 2/1, and 3/1 and different phosphate concentration AT INITIAL PH 4. Phosphate concentrations were determined using spectrophotometer. The results showed that the maximum sorption capacities of phosphates calculated based on Langmuir equation was 52.68 mg g-1.
PB  - Banja Luka : University PIM
C3  - XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022
T1  - Application of FeAl-LDH@SiO2 for Phosphate Removal from Water
SP  - 91
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10662
ER  - 

@conference{
author = "Egelja, Adela and Savić, Andrija and Šaponjić, Aleksandra and Kokunešoski, Maja and Ilić, Svetlana and Vuksanović, Marija M.",
year = "2022",
abstract = "In present study FEAL-LDH@SIO2 were Used for removing phosphate from aqueous solutions. FeAl-LDH with molar ratio Fe/Al = 3/1 was synthesized by co- precipitation from aqueous solutions in the present of SIO2 PARTICLES. Silica obtained from rice husks were used as a substrate for the deposition of LDH particles. The prepared material was characterized by scanning electron microscope (FE-SEM), X-ray diffraction (XRD), N2 adsorption/desorption isotherms (BET method) and Fourier transform infrared spectroscopy (FTIR). XRD analysis showed that Fe-Al had formed LDH structure. SEM analysis revealed deposition of LDH particles on SIO2 SUBSTRATE. The adsorption characteristics for phosphate uptake of the obtained material were performed. Adsorption experiments were carried out as a function of LDHs dosage with three different mass ratios of LDH/silica = 1/1, 2/1, and 3/1 and different phosphate concentration AT INITIAL PH 4. Phosphate concentrations were determined using spectrophotometer. The results showed that the maximum sorption capacities of phosphates calculated based on Langmuir equation was 52.68 mg g-1.",
publisher = "Banja Luka : University PIM",
journal = "XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022",
title = "Application of FeAl-LDH@SiO2 for Phosphate Removal from Water",
pages = "91",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10662"
}

Egelja, A., Savić, A., Šaponjić, A., Kokunešoski, M., Ilić, S.,& Vuksanović, M. M.. (2022). Application of FeAl-LDH@SiO2 for Phosphate Removal from Water. in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022
Banja Luka : University PIM., 91.
https://hdl.handle.net/21.15107/rcub_vinar_10662

Egelja A, Savić A, Šaponjić A, Kokunešoski M, Ilić S, Vuksanović MM. Application of FeAl-LDH@SiO2 for Phosphate Removal from Water. in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022. 2022;:91.
https://hdl.handle.net/21.15107/rcub_vinar_10662 .

Egelja, Adela, Savić, Andrija, Šaponjić, Aleksandra, Kokunešoski, Maja, Ilić, Svetlana, Vuksanović, Marija M., "Application of FeAl-LDH@SiO2 for Phosphate Removal from Water" in XI International conference on social and technological development - STED 2022 : book of abstracts, Trebinje, June 2-5, 2022 (2022):91,
https://hdl.handle.net/21.15107/rcub_vinar_10662 .

TY  - CONF
AU  - Kokunešoski, Maja
AU  - Pošarac-Marković, Milica B.
AU  - Katnić, Đurica
AU  - Baščarević, Z.
AU  - Ilić, Svetlana
AU  - Grce, Ana
AU  - Šaponjić, Aleksandra
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12993
AB  - The present work represents hydrogel as a composite based on sodium alginate and mesoporous SBA-15. The hydrogel was obtained by modifying mesoporous SBA-15 by a microencapsulation method of the SBA-15 in the sodium alginate matrix. The solution of CaCl2 provided a gelation complex of sodium alginate/SBA-15 in a rigid gel-like structure. The sodium alginate/SBA-15 hydrogels beads of about 3 mm diameter were prepared. Composite material was characterized by using powder X- ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. This composite material may have potential application in removal of metal ions – pollutants from aqueous solutions.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2
T1  - Modifying Mesoporous SBA-15 by a Microencapsulation Method in the Matrix of Sodium Alginate
SP  - 363
EP  - 366
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12993
ER  - 

@conference{
author = "Kokunešoski, Maja and Pošarac-Marković, Milica B. and Katnić, Đurica and Baščarević, Z. and Ilić, Svetlana and Grce, Ana and Šaponjić, Aleksandra",
year = "2022",
abstract = "The present work represents hydrogel as a composite based on sodium alginate and mesoporous SBA-15. The hydrogel was obtained by modifying mesoporous SBA-15 by a microencapsulation method of the SBA-15 in the sodium alginate matrix. The solution of CaCl2 provided a gelation complex of sodium alginate/SBA-15 in a rigid gel-like structure. The sodium alginate/SBA-15 hydrogels beads of about 3 mm diameter were prepared. Composite material was characterized by using powder X- ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. This composite material may have potential application in removal of metal ions – pollutants from aqueous solutions.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2",
title = "Modifying Mesoporous SBA-15 by a Microencapsulation Method in the Matrix of Sodium Alginate",
pages = "363-366",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12993"
}

Kokunešoski, M., Pošarac-Marković, M. B., Katnić, Đ., Baščarević, Z., Ilić, S., Grce, A.,& Šaponjić, A.. (2022). Modifying Mesoporous SBA-15 by a Microencapsulation Method in the Matrix of Sodium Alginate. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2
Belgrade : Society of Physical Chemists of Serbia., 363-366.
https://hdl.handle.net/21.15107/rcub_vinar_12993

Kokunešoski M, Pošarac-Marković MB, Katnić Đ, Baščarević Z, Ilić S, Grce A, Šaponjić A. Modifying Mesoporous SBA-15 by a Microencapsulation Method in the Matrix of Sodium Alginate. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2. 2022;:363-366.
https://hdl.handle.net/21.15107/rcub_vinar_12993 .

Kokunešoski, Maja, Pošarac-Marković, Milica B., Katnić, Đurica, Baščarević, Z., Ilić, Svetlana, Grce, Ana, Šaponjić, Aleksandra, "Modifying Mesoporous SBA-15 by a Microencapsulation Method in the Matrix of Sodium Alginate" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2 (2022):363-366,
https://hdl.handle.net/21.15107/rcub_vinar_12993 .

TY  - CONF
AU  - Šaponjić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Ilić, Svetlana
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Barudžija, Tanja
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11283
AB  - The possibilities of obtaining nanoparticles of non-oxide ceramic powders of silicon
nitride (Si3N4) by the method of carbothermal reduction and nitriding of diatomaceous
earth, a natural bio-amorphous raw material of low crystallinity, were investigated in this
paper. Activated carbon was used as a carbon source. In order to obtain better quality
Si3N4 powder in a faster and more efficient way, commercial α-Si3N4 powder was
introduced into starting mixtures. The starting mixtures of diatomaceous earth, activated
carbon, and differnt amounts of commercial α-Si3N4 powder (5, 10, 15, and 20) wt.%
were thermally treated for 2 h at 1350 and 1450 ºC. The obtained powders were
characterized by the following methods: X-ray diffraction (XRD), infrared spectroscopy
with Fourier transform (FTIR) and scanning electron microscopy (SEM).
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2
T1  - Silicon nitride based powders obtained by carbothermal reduction and nitridation of diatomite
SP  - 370
EP  - 367
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11283
ER  - 

@conference{
author = "Šaponjić, Aleksandra and Kokunešoski, Maja and Ilić, Svetlana and Radosavljević-Mihajlović, Ana S. and Barudžija, Tanja and Matović, Branko",
year = "2022",
abstract = "The possibilities of obtaining nanoparticles of non-oxide ceramic powders of silicon
nitride (Si3N4) by the method of carbothermal reduction and nitriding of diatomaceous
earth, a natural bio-amorphous raw material of low crystallinity, were investigated in this
paper. Activated carbon was used as a carbon source. In order to obtain better quality
Si3N4 powder in a faster and more efficient way, commercial α-Si3N4 powder was
introduced into starting mixtures. The starting mixtures of diatomaceous earth, activated
carbon, and differnt amounts of commercial α-Si3N4 powder (5, 10, 15, and 20) wt.%
were thermally treated for 2 h at 1350 and 1450 ºC. The obtained powders were
characterized by the following methods: X-ray diffraction (XRD), infrared spectroscopy
with Fourier transform (FTIR) and scanning electron microscopy (SEM).",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2",
title = "Silicon nitride based powders obtained by carbothermal reduction and nitridation of diatomite",
pages = "370-367",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11283"
}

Šaponjić, A., Kokunešoski, M., Ilić, S., Radosavljević-Mihajlović, A. S., Barudžija, T.,& Matović, B.. (2022). Silicon nitride based powders obtained by carbothermal reduction and nitridation of diatomite. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2
Belgrade : Society of Physical Chemists of Serbia., 370-367.
https://hdl.handle.net/21.15107/rcub_vinar_11283

Šaponjić A, Kokunešoski M, Ilić S, Radosavljević-Mihajlović AS, Barudžija T, Matović B. Silicon nitride based powders obtained by carbothermal reduction and nitridation of diatomite. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2. 2022;:370-367.
https://hdl.handle.net/21.15107/rcub_vinar_11283 .

Šaponjić, Aleksandra, Kokunešoski, Maja, Ilić, Svetlana, Radosavljević-Mihajlović, Ana S., Barudžija, Tanja, Matović, Branko, "Silicon nitride based powders obtained by carbothermal reduction and nitridation of diatomite" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, Vol. 2 (2022):370-367,
https://hdl.handle.net/21.15107/rcub_vinar_11283 .

Kokunešoski, M., Kićević, D., Šaponjić, Đ., Ilić, S., Egelja, A., Šaponjić, A.,& Bučevac, D.. (2022). Primena metil metakrilata u izradi keramičkog zavrtnja mašinskom obradom ispresaka. in Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Institut od nacionalnog značaja za Republiku Srbiju.
https://hdl.handle.net/21.15107/rcub_vinar_11416

Kokunešoski M, Kićević D, Šaponjić Đ, Ilić S, Egelja A, Šaponjić A, Bučevac D. Primena metil metakrilata u izradi keramičkog zavrtnja mašinskom obradom ispresaka. in Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Institut od nacionalnog značaja za Republiku Srbiju. 2022;.
https://hdl.handle.net/21.15107/rcub_vinar_11416 .

Kokunešoski, Maja, Kićević, Dušan, Šaponjić, Đorđe, Ilić, Svetlana, Egelja, Adela, Šaponjić, Aleksandra, Bučevac, Dušan, "Primena metil metakrilata u izradi keramičkog zavrtnja mašinskom obradom ispresaka" in Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Institut od nacionalnog značaja za Republiku Srbiju (2022),
https://hdl.handle.net/21.15107/rcub_vinar_11416 .

TY  - JOUR
AU  - Šaponjić, Aleksandra
AU  - Gyoshev, Stanislav
AU  - Baščarević, Zvezdana D.
AU  - Janković Mandić, Ljiljana
AU  - Ljubenov, Gorica
AU  - Kokunešoski, Maja
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10247
AB  - Diatomite (diatomaceous earth) and clay minerals deposits from the mining basin Kolubara, Serbia, are natural materials with high economic potential in many fields. As received and treated materials, diatomite and clay were characterized using X-ray diffraction, mercury intrusion porosimetry, particle size distribution, scanning electron microscopy, and Fourier-transform infrared spectroscopy. Activity concentrations for natural radionuclides 40K, 226Ra and 232Th and anthropogenic radionuclide 137Cs in diatomite and clay were determined by gamma spectrometry with HPGe detector. For diatomite and clay, the mean activity concentrations of 226Ra, 232Th and 40K were found to be 9, 26 and 173 Bq kg-1 and 19, 26 and 470 Bq kg-1, respectively. In the present study was to show that these materials are environmentally safe for further use in many fields.
T2  - Science of Sintering
T1  - Characterization of sedimentary minerals from Kolubara mining basin, Serbia, with the determination of natural radioactivity
VL  - 54
IS  - 1
SP  - 39
EP  - 48
DO  - 10.2298/SOS2201039S
ER  - 

@article{
author = "Šaponjić, Aleksandra and Gyoshev, Stanislav and Baščarević, Zvezdana D. and Janković Mandić, Ljiljana and Ljubenov, Gorica and Kokunešoski, Maja",
year = "2022",
abstract = "Diatomite (diatomaceous earth) and clay minerals deposits from the mining basin Kolubara, Serbia, are natural materials with high economic potential in many fields. As received and treated materials, diatomite and clay were characterized using X-ray diffraction, mercury intrusion porosimetry, particle size distribution, scanning electron microscopy, and Fourier-transform infrared spectroscopy. Activity concentrations for natural radionuclides 40K, 226Ra and 232Th and anthropogenic radionuclide 137Cs in diatomite and clay were determined by gamma spectrometry with HPGe detector. For diatomite and clay, the mean activity concentrations of 226Ra, 232Th and 40K were found to be 9, 26 and 173 Bq kg-1 and 19, 26 and 470 Bq kg-1, respectively. In the present study was to show that these materials are environmentally safe for further use in many fields.",
journal = "Science of Sintering",
title = "Characterization of sedimentary minerals from Kolubara mining basin, Serbia, with the determination of natural radioactivity",
volume = "54",
number = "1",
pages = "39-48",
doi = "10.2298/SOS2201039S"
}

Šaponjić, A., Gyoshev, S., Baščarević, Z. D., Janković Mandić, L., Ljubenov, G.,& Kokunešoski, M.. (2022). Characterization of sedimentary minerals from Kolubara mining basin, Serbia, with the determination of natural radioactivity. in Science of Sintering, 54(1), 39-48.
https://doi.org/10.2298/SOS2201039S

Šaponjić A, Gyoshev S, Baščarević ZD, Janković Mandić L, Ljubenov G, Kokunešoski M. Characterization of sedimentary minerals from Kolubara mining basin, Serbia, with the determination of natural radioactivity. in Science of Sintering. 2022;54(1):39-48.
doi:10.2298/SOS2201039S .

Šaponjić, Aleksandra, Gyoshev, Stanislav, Baščarević, Zvezdana D., Janković Mandić, Ljiljana, Ljubenov, Gorica, Kokunešoski, Maja, "Characterization of sedimentary minerals from Kolubara mining basin, Serbia, with the determination of natural radioactivity" in Science of Sintering, 54, no. 1 (2022):39-48,
https://doi.org/10.2298/SOS2201039S . .

TY  - CONF
AU  - Kokunešoski, Maja
AU  - Pošarac-Marković, Milica B.
AU  - Katnić, Đurica
AU  - Baščarević, Zvezdana D.
AU  - Ilić, S.
AU  - Grce, Ana
AU  - Šaponjić, Aleksandra
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11281
AB  - The present work represents hydrogel as a composite based on sodium alginate and
mesoporous SBA-15. The hydrogel was obtained by modifying mesoporous SBA-15 by a
microencapsulation method of the SBA-15 in the sodium alginate matrix. The solution of
CaCl2 provided a gelation complex of sodium alginate/SBA-15 in a rigid gel-like
structure. The sodium alginate/SBA-15 hydrogels beads of about 3 mm diameter were
prepared. Composite material was characterized by using powder X-ray diffraction,
scanning electron microscopy and energy dispersive X-ray analysis. This composite
material may have potential application in removal of metal ions – pollutants from
aqueous solutions.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts
T1  - Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production
SP  - 99
EP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11281
ER  - 

@conference{
author = "Kokunešoski, Maja and Pošarac-Marković, Milica B. and Katnić, Đurica and Baščarević, Zvezdana D. and Ilić, S. and Grce, Ana and Šaponjić, Aleksandra",
year = "2022",
abstract = "The present work represents hydrogel as a composite based on sodium alginate and
mesoporous SBA-15. The hydrogel was obtained by modifying mesoporous SBA-15 by a
microencapsulation method of the SBA-15 in the sodium alginate matrix. The solution of
CaCl2 provided a gelation complex of sodium alginate/SBA-15 in a rigid gel-like
structure. The sodium alginate/SBA-15 hydrogels beads of about 3 mm diameter were
prepared. Composite material was characterized by using powder X-ray diffraction,
scanning electron microscopy and energy dispersive X-ray analysis. This composite
material may have potential application in removal of metal ions – pollutants from
aqueous solutions.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts",
title = "Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production",
pages = "99-99",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11281"
}

Kokunešoski, M., Pošarac-Marković, M. B., Katnić, Đ., Baščarević, Z. D., Ilić, S., Grce, A.,& Šaponjić, A.. (2022). Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts
Belgrade : Society of Physical Chemists of Serbia., 99-99.
https://hdl.handle.net/21.15107/rcub_vinar_11281

Kokunešoski M, Pošarac-Marković MB, Katnić Đ, Baščarević ZD, Ilić S, Grce A, Šaponjić A. Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts. 2022;:99-99.
https://hdl.handle.net/21.15107/rcub_vinar_11281 .

Kokunešoski, Maja, Pošarac-Marković, Milica B., Katnić, Đurica, Baščarević, Zvezdana D., Ilić, S., Grce, Ana, Šaponjić, Aleksandra, "Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts (2022):99-99,
https://hdl.handle.net/21.15107/rcub_vinar_11281 .

TY  - CONF
AU  - Tasić, T.
AU  - Milanković, Vedran
AU  - Kokunešoski, Maja
AU  - Šaponjić, Aleksandra
AU  - Valenta-Šobot, Ana
AU  - Grce, Ana
AU  - Lazarević-Pašti, Tamara
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11285
AB  - Organophosphate pesticides are primarily used in agriculture despite their high
neurotoxicity to humans and the environment. Malathion is used in agriculture as a means
of controlling the development of pests, but also in the protection of public health, to
control mosquitoes and lice. However, this organophosphate compound is hazardous to
human health. We used wood-waste-derived activated porous carbon material as an
adsorbent for malathion removal from water. The kinetics of the malathion adsorption
process on investigated carbon material at different temperatures was studied. The results
showed that the experimental data are a good fit with the pseudo-second-order model.
The calculated rate constants were 0.009 and 0.007 g mg−1 min−1
at 20 and 40 °C,
respectively. The equilibrium was reached after 60 minutes at both investigated
temperatures. It was shown that 1 g of the studied material could adsorb up to 186.22 mg
of malathion at 20 °C.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts
T1  - Wood-Waste-Derived Activated Porous Carbon Material for Pesticide Removal From Water
SP  - 135
EP  - 135
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11285
ER  - 

@conference{
author = "Tasić, T. and Milanković, Vedran and Kokunešoski, Maja and Šaponjić, Aleksandra and Valenta-Šobot, Ana and Grce, Ana and Lazarević-Pašti, Tamara",
year = "2022",
abstract = "Organophosphate pesticides are primarily used in agriculture despite their high
neurotoxicity to humans and the environment. Malathion is used in agriculture as a means
of controlling the development of pests, but also in the protection of public health, to
control mosquitoes and lice. However, this organophosphate compound is hazardous to
human health. We used wood-waste-derived activated porous carbon material as an
adsorbent for malathion removal from water. The kinetics of the malathion adsorption
process on investigated carbon material at different temperatures was studied. The results
showed that the experimental data are a good fit with the pseudo-second-order model.
The calculated rate constants were 0.009 and 0.007 g mg−1 min−1
at 20 and 40 °C,
respectively. The equilibrium was reached after 60 minutes at both investigated
temperatures. It was shown that 1 g of the studied material could adsorb up to 186.22 mg
of malathion at 20 °C.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts",
title = "Wood-Waste-Derived Activated Porous Carbon Material for Pesticide Removal From Water",
pages = "135-135",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11285"
}

Tasić, T., Milanković, V., Kokunešoski, M., Šaponjić, A., Valenta-Šobot, A., Grce, A.,& Lazarević-Pašti, T.. (2022). Wood-Waste-Derived Activated Porous Carbon Material for Pesticide Removal From Water. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts
Society of Physical Chemists of Serbia., 135-135.
https://hdl.handle.net/21.15107/rcub_vinar_11285

Tasić T, Milanković V, Kokunešoski M, Šaponjić A, Valenta-Šobot A, Grce A, Lazarević-Pašti T. Wood-Waste-Derived Activated Porous Carbon Material for Pesticide Removal From Water. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts. 2022;:135-135.
https://hdl.handle.net/21.15107/rcub_vinar_11285 .

Tasić, T., Milanković, Vedran, Kokunešoski, Maja, Šaponjić, Aleksandra, Valenta-Šobot, Ana, Grce, Ana, Lazarević-Pašti, Tamara, "Wood-Waste-Derived Activated Porous Carbon Material for Pesticide Removal From Water" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts (2022):135-135,
https://hdl.handle.net/21.15107/rcub_vinar_11285 .

TY  - CONF
AU  - Šaponjić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Ilić, Svetlana
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10802
AB  - In the synthesis of silicon nitride (Si3N4) based powders by carbothermal reduction-nitridation of diatomaceous earth, the effects of addition of silicon nitride powder on the phase composition, particle size and shape were investigated in this paper. Activated carbon was used as carbon sources. In order to obtain better quality Si3N4 powder in a faster and more efficient way, α-Si3N4 powder was introduced into starting mixtures as seeds. The starting mixtures of diatomaceous earth, carbon source and commercial α-Si3N4 powder (5,10,15 and 20 wt.%) were thermally treated at 1350 °C and 1450. X-ray diffraction (XRD), infrared spectroscopy with Fourier transform (FTIR) and scanning electron microscopy (SEM) were employed to characterize the phases, functional groups, microstructure of the obtained powders. The major reduction of diatomaceous earth took place at 1450 °C. At 1350 °C particles retained the morphological characteristics of the starting diatomaceous earth. At 1450 °C, observed particles possess a polygonal habitus, which is characteristic for silicon nitride crystals.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
T1  - Formation of nitride powders by carbothermal reduction- nitridation of diatomite
SP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10802
ER  - 

@conference{
author = "Šaponjić, Aleksandra and Kokunešoski, Maja and Ilić, Svetlana and Radosavljević-Mihajlović, Ana S. and Matović, Branko",
year = "2022",
abstract = "In the synthesis of silicon nitride (Si3N4) based powders by carbothermal reduction-nitridation of diatomaceous earth, the effects of addition of silicon nitride powder on the phase composition, particle size and shape were investigated in this paper. Activated carbon was used as carbon sources. In order to obtain better quality Si3N4 powder in a faster and more efficient way, α-Si3N4 powder was introduced into starting mixtures as seeds. The starting mixtures of diatomaceous earth, carbon source and commercial α-Si3N4 powder (5,10,15 and 20 wt.%) were thermally treated at 1350 °C and 1450. X-ray diffraction (XRD), infrared spectroscopy with Fourier transform (FTIR) and scanning electron microscopy (SEM) were employed to characterize the phases, functional groups, microstructure of the obtained powders. The major reduction of diatomaceous earth took place at 1450 °C. At 1350 °C particles retained the morphological characteristics of the starting diatomaceous earth. At 1450 °C, observed particles possess a polygonal habitus, which is characteristic for silicon nitride crystals.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade",
title = "Formation of nitride powders by carbothermal reduction- nitridation of diatomite",
pages = "72",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10802"
}

Šaponjić, A., Kokunešoski, M., Ilić, S., Radosavljević-Mihajlović, A. S.,& Matović, B.. (2022). Formation of nitride powders by carbothermal reduction- nitridation of diatomite. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
Belgrade : Serbian Ceramic Society., 72.
https://hdl.handle.net/21.15107/rcub_vinar_10802

Šaponjić A, Kokunešoski M, Ilić S, Radosavljević-Mihajlović AS, Matović B. Formation of nitride powders by carbothermal reduction- nitridation of diatomite. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade. 2022;:72.
https://hdl.handle.net/21.15107/rcub_vinar_10802 .

Šaponjić, Aleksandra, Kokunešoski, Maja, Ilić, Svetlana, Radosavljević-Mihajlović, Ana S., Matović, Branko, "Formation of nitride powders by carbothermal reduction- nitridation of diatomite" in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade (2022):72,
https://hdl.handle.net/21.15107/rcub_vinar_10802 .

TY  - CONF
AU  - Kokunešoski, Maja
AU  - Šaponjić, Aleksandra
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10804
AB  - The addition of methyl methacrylate (MMA) in the amount of 2 mas% in the alumina mixture improved the pressing of alumina and achieved excellent quality of machining of green compacts. The compressibility test determined the optimal pressing pressure of alumina with MMA of 60 MPa. The value of green densities was analyzed depending on applied pressure up to 150 MPa. The exceptionally smooth and shiny surface of green compact indicates good pressing of alumina with MMA. After pressing, the samples were thermally treated at 115 o C to activate the side groups of MMA polymer chains at a temperature slightly higher than the glass transition temperature (103 o C) of PMMA. This way was to improve the strength of the green compact. Compacts prepared with MMA had higher values of green density and lower values of sintered density, total and open porosity than compacts without MMA. After sintering at 1620 o C, the relative linear shrinkage was about 15% for the entire range of applied pressing pressures. The machining of the green compact enables the precise production of complicated forms of technical ceramics for the needs of many areas of the economy.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
T1  - Application of methyl methacrylate for pressing and machining of alumina green ceramics
SP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10804
ER  - 

@conference{
author = "Kokunešoski, Maja and Šaponjić, Aleksandra",
year = "2022",
abstract = "The addition of methyl methacrylate (MMA) in the amount of 2 mas% in the alumina mixture improved the pressing of alumina and achieved excellent quality of machining of green compacts. The compressibility test determined the optimal pressing pressure of alumina with MMA of 60 MPa. The value of green densities was analyzed depending on applied pressure up to 150 MPa. The exceptionally smooth and shiny surface of green compact indicates good pressing of alumina with MMA. After pressing, the samples were thermally treated at 115 o C to activate the side groups of MMA polymer chains at a temperature slightly higher than the glass transition temperature (103 o C) of PMMA. This way was to improve the strength of the green compact. Compacts prepared with MMA had higher values of green density and lower values of sintered density, total and open porosity than compacts without MMA. After sintering at 1620 o C, the relative linear shrinkage was about 15% for the entire range of applied pressing pressures. The machining of the green compact enables the precise production of complicated forms of technical ceramics for the needs of many areas of the economy.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade",
title = "Application of methyl methacrylate for pressing and machining of alumina green ceramics",
pages = "73",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10804"
}

Kokunešoski, M.,& Šaponjić, A.. (2022). Application of methyl methacrylate for pressing and machining of alumina green ceramics. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
Belgrade : Serbian Ceramic Society., 73.
https://hdl.handle.net/21.15107/rcub_vinar_10804

Kokunešoski M, Šaponjić A. Application of methyl methacrylate for pressing and machining of alumina green ceramics. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade. 2022;:73.
https://hdl.handle.net/21.15107/rcub_vinar_10804 .

Kokunešoski, Maja, Šaponjić, Aleksandra, "Application of methyl methacrylate for pressing and machining of alumina green ceramics" in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade (2022):73,
https://hdl.handle.net/21.15107/rcub_vinar_10804 .

TY  - CONF
AU  - Valenta-Šobot, Ana
AU  - Filipović Tričković, Jelena G.
AU  - Šaponjić, Aleksandra
AU  - Ilić, Svetlana
AU  - Grce, Ana
AU  - Katnić, Đurica
AU  - Kokunešoski, Maja
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11293
AB  - Mesoporous silica renders chemical and mechanical stability under biological conditions, but due to its physicochemical properties, could be potentially harmful to exposed cells. The aim of the current study was to estimate SBA-15 (concentration of 50, 100 and 250 µg/mL) impact on human peripheral blood mononuclear cells to induce cyto- and genotoxicity in vitro after 72 h treatment, as well as lipid peroxidation in serum samples ex vivo. SBA-15 mesoporous silica treatment impact on cell viability was performed by XTT assay, lipid peroxidation was estimated by determining malondialdehyde and 4-hydroxyalkenals levels and genotoxicity by micronucleus assay. SBA-15 treatments displayed genotoxic potential at the lowest concentration, while highest tested concentration led to decrease of cell viability and increase of lipid peroxidation. Chemical modification of SBA-15 material that could influence its physicochemical properties could be useful way to lower its toxicity.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry
T1  - Mesoporous silica decrease cell viability in vitro in dose dependent manner
VL  - II
SP  - 442
EP  - 444
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11293
ER  - 

@conference{
author = "Valenta-Šobot, Ana and Filipović Tričković, Jelena G. and Šaponjić, Aleksandra and Ilić, Svetlana and Grce, Ana and Katnić, Đurica and Kokunešoski, Maja",
year = "2021",
abstract = "Mesoporous silica renders chemical and mechanical stability under biological conditions, but due to its physicochemical properties, could be potentially harmful to exposed cells. The aim of the current study was to estimate SBA-15 (concentration of 50, 100 and 250 µg/mL) impact on human peripheral blood mononuclear cells to induce cyto- and genotoxicity in vitro after 72 h treatment, as well as lipid peroxidation in serum samples ex vivo. SBA-15 mesoporous silica treatment impact on cell viability was performed by XTT assay, lipid peroxidation was estimated by determining malondialdehyde and 4-hydroxyalkenals levels and genotoxicity by micronucleus assay. SBA-15 treatments displayed genotoxic potential at the lowest concentration, while highest tested concentration led to decrease of cell viability and increase of lipid peroxidation. Chemical modification of SBA-15 material that could influence its physicochemical properties could be useful way to lower its toxicity.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry",
title = "Mesoporous silica decrease cell viability in vitro in dose dependent manner",
volume = "II",
pages = "442-444",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11293"
}

Valenta-Šobot, A., Filipović Tričković, J. G., Šaponjić, A., Ilić, S., Grce, A., Katnić, Đ.,& Kokunešoski, M.. (2021). Mesoporous silica decrease cell viability in vitro in dose dependent manner. in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., II, 442-444.
https://hdl.handle.net/21.15107/rcub_vinar_11293

Valenta-Šobot A, Filipović Tričković JG, Šaponjić A, Ilić S, Grce A, Katnić Đ, Kokunešoski M. Mesoporous silica decrease cell viability in vitro in dose dependent manner. in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry. 2021;II:442-444.
https://hdl.handle.net/21.15107/rcub_vinar_11293 .

Valenta-Šobot, Ana, Filipović Tričković, Jelena G., Šaponjić, Aleksandra, Ilić, Svetlana, Grce, Ana, Katnić, Đurica, Kokunešoski, Maja, "Mesoporous silica decrease cell viability in vitro in dose dependent manner" in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry, II (2021):442-444,
https://hdl.handle.net/21.15107/rcub_vinar_11293 .

TY  - JOUR
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Mitić, Vojislav
AU  - Šaponjić, Aleksandra
AU  - Kasić, Vladan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9991
AB  - Data on thermally induced transformations of Mn exchanged zeolites LTA and FAU topology are presented in this paper. Thermally induced phase transformation of Mn-exchange zeolites are followed in the range from 700 to 1300oC. Both frameworks collapse into amorphous intermediate products after heating between 600 and 650oC. Prolonged heating of the intermediate product above 1100 °C results directly in formation of a disorder Mn-anorthiteLTA and Mn-anorthiteFAU. The parameter of unit cell of Mn-anorthiteLTA and Mn-anorthiteFAU, in temperature range between 700 and 1300oC, was observed in space group C-1. The phase conversions in the temperature range investigated were followed by thermal, X-ray powder diffraction and FT-IR analyses.
T2  - Science of Sintering
T1  - Thermally induced phase transformation of Mn-LTA and Mn-FAU zeolite to anorthite phases
VL  - 53
IS  - 3
SP  - 397
EP  - 406
DO  - 10.2298/SOS2103397R
ER  - 

@article{
author = "Radosavljević-Mihajlović, Ana S. and Mitić, Vojislav and Šaponjić, Aleksandra and Kasić, Vladan",
year = "2021",
abstract = "Data on thermally induced transformations of Mn exchanged zeolites LTA and FAU topology are presented in this paper. Thermally induced phase transformation of Mn-exchange zeolites are followed in the range from 700 to 1300oC. Both frameworks collapse into amorphous intermediate products after heating between 600 and 650oC. Prolonged heating of the intermediate product above 1100 °C results directly in formation of a disorder Mn-anorthiteLTA and Mn-anorthiteFAU. The parameter of unit cell of Mn-anorthiteLTA and Mn-anorthiteFAU, in temperature range between 700 and 1300oC, was observed in space group C-1. The phase conversions in the temperature range investigated were followed by thermal, X-ray powder diffraction and FT-IR analyses.",
journal = "Science of Sintering",
title = "Thermally induced phase transformation of Mn-LTA and Mn-FAU zeolite to anorthite phases",
volume = "53",
number = "3",
pages = "397-406",
doi = "10.2298/SOS2103397R"
}

Radosavljević-Mihajlović, A. S., Mitić, V., Šaponjić, A.,& Kasić, V.. (2021). Thermally induced phase transformation of Mn-LTA and Mn-FAU zeolite to anorthite phases. in Science of Sintering, 53(3), 397-406.
https://doi.org/10.2298/SOS2103397R

Radosavljević-Mihajlović AS, Mitić V, Šaponjić A, Kasić V. Thermally induced phase transformation of Mn-LTA and Mn-FAU zeolite to anorthite phases. in Science of Sintering. 2021;53(3):397-406.
doi:10.2298/SOS2103397R .

Radosavljević-Mihajlović, Ana S., Mitić, Vojislav, Šaponjić, Aleksandra, Kasić, Vladan, "Thermally induced phase transformation of Mn-LTA and Mn-FAU zeolite to anorthite phases" in Science of Sintering, 53, no. 3 (2021):397-406,
https://doi.org/10.2298/SOS2103397R . .

TY  - CONF
AU  - Valenta-Šobot, Ana
AU  - Filipović Tričković, Jelena G.
AU  - Šaponjić, Aleksandra
AU  - Grce, Ana
AU  - Kokunešoski, Maja
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11310
PB  - Academy of Sciences and Arts of the Republic of Srpska
C3  - „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts
T1  - Prolonged exposure to mesoporous silica decrease cell viability in vitro
SP  - 53
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11310
ER  - 

@conference{
author = "Valenta-Šobot, Ana and Filipović Tričković, Jelena G. and Šaponjić, Aleksandra and Grce, Ana and Kokunešoski, Maja",
year = "2021",
publisher = "Academy of Sciences and Arts of the Republic of Srpska",
journal = "„Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts",
title = "Prolonged exposure to mesoporous silica decrease cell viability in vitro",
pages = "53",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11310"
}

Valenta-Šobot, A., Filipović Tričković, J. G., Šaponjić, A., Grce, A.,& Kokunešoski, M.. (2021). Prolonged exposure to mesoporous silica decrease cell viability in vitro. in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts
Academy of Sciences and Arts of the Republic of Srpska., 53.
https://hdl.handle.net/21.15107/rcub_vinar_11310

Valenta-Šobot A, Filipović Tričković JG, Šaponjić A, Grce A, Kokunešoski M. Prolonged exposure to mesoporous silica decrease cell viability in vitro. in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts. 2021;:53.
https://hdl.handle.net/21.15107/rcub_vinar_11310 .

Valenta-Šobot, Ana, Filipović Tričković, Jelena G., Šaponjić, Aleksandra, Grce, Ana, Kokunešoski, Maja, "Prolonged exposure to mesoporous silica decrease cell viability in vitro" in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts (2021):53,
https://hdl.handle.net/21.15107/rcub_vinar_11310 .

TY  - CONF
AU  - Ilić, Svetlana
AU  - Šaponjić, Aleksandra
AU  - Radovanović, Željko
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Kokunešoski, Maja
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10811
AB  - To obtain the titania (TiO2) nanoparticles, the conventional sol-gel method under acidic conditions, pH around 2, was employed. After synthesis, the obtained powder was calcinated at 500 and 700 °C. The X-ray diffraction analysis confirmed that the heat-treated powder at 500 °C was anatase phase, while the heat-treated powder at 700 °C was the mixture of anatase and rutile phase. The crystallite size of the anatase phase at 500 °C was 15 nm whereas at 700 °C crystallite size of the anatase was 47 nm and 63 nm for the rutile phase. The characteristic FE–SEM images revealed well distributed spherical shaped nanoparticles. An average diameter of nanoparticles was in the range of 20 – 30 nm. The average size of nanoparticles in the sample treated at 500 °C was lower than the nanoparticles in the one treated at 700 °C. Therefore, the specific surface area of synthesized pure TiO2 after heat treatment at lower temperatures is higher, promising better absorption and photocatalytic activity.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Sol-gel synthesis of titanium dioxide in acidic conditions
SP  - 69
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10811
ER  - 

@conference{
author = "Ilić, Svetlana and Šaponjić, Aleksandra and Radovanović, Željko and Radosavljević-Mihajlović, Ana S. and Kokunešoski, Maja",
year = "2021",
abstract = "To obtain the titania (TiO2) nanoparticles, the conventional sol-gel method under acidic conditions, pH around 2, was employed. After synthesis, the obtained powder was calcinated at 500 and 700 °C. The X-ray diffraction analysis confirmed that the heat-treated powder at 500 °C was anatase phase, while the heat-treated powder at 700 °C was the mixture of anatase and rutile phase. The crystallite size of the anatase phase at 500 °C was 15 nm whereas at 700 °C crystallite size of the anatase was 47 nm and 63 nm for the rutile phase. The characteristic FE–SEM images revealed well distributed spherical shaped nanoparticles. An average diameter of nanoparticles was in the range of 20 – 30 nm. The average size of nanoparticles in the sample treated at 500 °C was lower than the nanoparticles in the one treated at 700 °C. Therefore, the specific surface area of synthesized pure TiO2 after heat treatment at lower temperatures is higher, promising better absorption and photocatalytic activity.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Sol-gel synthesis of titanium dioxide in acidic conditions",
pages = "69",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10811"
}

Ilić, S., Šaponjić, A., Radovanović, Ž., Radosavljević-Mihajlović, A. S.,& Kokunešoski, M.. (2021). Sol-gel synthesis of titanium dioxide in acidic conditions. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 69.
https://hdl.handle.net/21.15107/rcub_vinar_10811

Ilić S, Šaponjić A, Radovanović Ž, Radosavljević-Mihajlović AS, Kokunešoski M. Sol-gel synthesis of titanium dioxide in acidic conditions. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:69.
https://hdl.handle.net/21.15107/rcub_vinar_10811 .

Ilić, Svetlana, Šaponjić, Aleksandra, Radovanović, Željko, Radosavljević-Mihajlović, Ana S., Kokunešoski, Maja, "Sol-gel synthesis of titanium dioxide in acidic conditions" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):69,
https://hdl.handle.net/21.15107/rcub_vinar_10811 .

TY  - CONF
AU  - Katnić, Đurica
AU  - Kokunešoski, Maja
AU  - Šaponjić, Aleksandra
AU  - Valenta-Šobot, Ana
AU  - Pošarac-Marković, Milica
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11308
PB  - Academy of Sciences and Arts of the Republic of Srpska
C3  - „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts
T1  - Influence of synthesis conditions on adsorption capacity of SBA-15/alginate adsorbent for removal ions of nickel(II) and lead(II) from aqueous solution
SP  - 49
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11308
ER  - 

@conference{
author = "Katnić, Đurica and Kokunešoski, Maja and Šaponjić, Aleksandra and Valenta-Šobot, Ana and Pošarac-Marković, Milica",
year = "2021",
publisher = "Academy of Sciences and Arts of the Republic of Srpska",
journal = "„Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts",
title = "Influence of synthesis conditions on adsorption capacity of SBA-15/alginate adsorbent for removal ions of nickel(II) and lead(II) from aqueous solution",
pages = "49",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11308"
}

Katnić, Đ., Kokunešoski, M., Šaponjić, A., Valenta-Šobot, A.,& Pošarac-Marković, M.. (2021). Influence of synthesis conditions on adsorption capacity of SBA-15/alginate adsorbent for removal ions of nickel(II) and lead(II) from aqueous solution. in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts
Academy of Sciences and Arts of the Republic of Srpska., 49.
https://hdl.handle.net/21.15107/rcub_vinar_11308

Katnić Đ, Kokunešoski M, Šaponjić A, Valenta-Šobot A, Pošarac-Marković M. Influence of synthesis conditions on adsorption capacity of SBA-15/alginate adsorbent for removal ions of nickel(II) and lead(II) from aqueous solution. in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts. 2021;:49.
https://hdl.handle.net/21.15107/rcub_vinar_11308 .

Katnić, Đurica, Kokunešoski, Maja, Šaponjić, Aleksandra, Valenta-Šobot, Ana, Pošarac-Marković, Milica, "Influence of synthesis conditions on adsorption capacity of SBA-15/alginate adsorbent for removal ions of nickel(II) and lead(II) from aqueous solution" in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts (2021):49,
https://hdl.handle.net/21.15107/rcub_vinar_11308 .

TY  - CONF
AU  - Kokunešoski, Maja
AU  - Baščarević, Zvezdana
AU  - Ilić, Svetlana
AU  - Valenta-Šobot, Ana
AU  - Šaponjić, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11306
PB  - Academy of Sciences and Arts of the Republic of Srpska
C3  - „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts
T1  - Synthesis and characterisation of SBA-15 with spherical particles
SP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11306
ER  - 

@conference{
author = "Kokunešoski, Maja and Baščarević, Zvezdana and Ilić, Svetlana and Valenta-Šobot, Ana and Šaponjić, Aleksandra",
year = "2021",
publisher = "Academy of Sciences and Arts of the Republic of Srpska",
journal = "„Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts",
title = "Synthesis and characterisation of SBA-15 with spherical particles",
pages = "48",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11306"
}

Kokunešoski, M., Baščarević, Z., Ilić, S., Valenta-Šobot, A.,& Šaponjić, A.. (2021). Synthesis and characterisation of SBA-15 with spherical particles. in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts
Academy of Sciences and Arts of the Republic of Srpska., 48.
https://hdl.handle.net/21.15107/rcub_vinar_11306

Kokunešoski M, Baščarević Z, Ilić S, Valenta-Šobot A, Šaponjić A. Synthesis and characterisation of SBA-15 with spherical particles. in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts. 2021;:48.
https://hdl.handle.net/21.15107/rcub_vinar_11306 .

Kokunešoski, Maja, Baščarević, Zvezdana, Ilić, Svetlana, Valenta-Šobot, Ana, Šaponjić, Aleksandra, "Synthesis and characterisation of SBA-15 with spherical particles" in „Contemporary Materials 2021“ : 14th International Scientific Conference : programme and book of abstracts (2021):48,
https://hdl.handle.net/21.15107/rcub_vinar_11306 .

TY  - CONF
AU  - Kokunešoski, Maja
AU  - Bašćarević, Zvezdana
AU  - Ilić, Svetlana
AU  - Valenta-Šobot, Ana
AU  - Grce, Ana
AU  - Pošarac-Marković, Milica B.
AU  - Šaponjić, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10799
AB  - The synthesis of SBA-15 material with spherical particles is performed by the template method by using only a surfactant Pluronic P123 under acidic conditions. In the synthesis of SBA-15 with spherical particles, an HCl solution was used after specialised chemical treatment of clay purification. The dominant presence of the spheres with diameters up to around 2 μm was confirmed by the scanning electron microscopy(SEM) method. In contrast, the Energy-dispersive X-ray spectroscopy(EDS) confirmed that the spheres consisted only of SiO2 in composition. In addition to the methods mentioned above, X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy(FTIR) methods were used to characterise SBA- 15 materials. Application of HCl solution after chemical treatment of clay purification represents the application of technology in the synthesis of spherical SBA-15.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant
SP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10799
ER  - 

@conference{
author = "Kokunešoski, Maja and Bašćarević, Zvezdana and Ilić, Svetlana and Valenta-Šobot, Ana and Grce, Ana and Pošarac-Marković, Milica B. and Šaponjić, Aleksandra",
year = "2021",
abstract = "The synthesis of SBA-15 material with spherical particles is performed by the template method by using only a surfactant Pluronic P123 under acidic conditions. In the synthesis of SBA-15 with spherical particles, an HCl solution was used after specialised chemical treatment of clay purification. The dominant presence of the spheres with diameters up to around 2 μm was confirmed by the scanning electron microscopy(SEM) method. In contrast, the Energy-dispersive X-ray spectroscopy(EDS) confirmed that the spheres consisted only of SiO2 in composition. In addition to the methods mentioned above, X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy(FTIR) methods were used to characterise SBA- 15 materials. Application of HCl solution after chemical treatment of clay purification represents the application of technology in the synthesis of spherical SBA-15.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant",
pages = "66",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10799"
}

Kokunešoski, M., Bašćarević, Z., Ilić, S., Valenta-Šobot, A., Grce, A., Pošarac-Marković, M. B.,& Šaponjić, A.. (2021). Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 66.
https://hdl.handle.net/21.15107/rcub_vinar_10799

Kokunešoski M, Bašćarević Z, Ilić S, Valenta-Šobot A, Grce A, Pošarac-Marković MB, Šaponjić A. Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:66.
https://hdl.handle.net/21.15107/rcub_vinar_10799 .

Kokunešoski, Maja, Bašćarević, Zvezdana, Ilić, Svetlana, Valenta-Šobot, Ana, Grce, Ana, Pošarac-Marković, Milica B., Šaponjić, Aleksandra, "Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):66,
https://hdl.handle.net/21.15107/rcub_vinar_10799 .

TY  - CONF
AU  - Kokunešoski, Maja
AU  - Gyoshev, Stanislav
AU  - Bašćarević, Zvezdana
AU  - Ilić, Svetlana M.
AU  - Šaponjić, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10800
AB  - The clay minerals deposit from the mining basin Kolubara, Serbia, is a natural sediment material with high economic potential in many fields. The chemical composition of starting clay determined by inductively coupled plasma spectrometry shows that its main composition of SiO2 is 88.00 wt.%. Organic impurities from clay have been removed by heat treatment at 600 °C for 2 h in air. After thermal treatment, an aqueous solution of HCl sedimentary mineral was chemically treated. Surface properties of starting clay and thermally and chemically treated clay (treated clay) were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and particle size distribution method. The XRD analyses of the starting and treated clay confirmed that quartz is a significant phase, followed by the appearance of feldspar and smectite clays. The SEM method showed impressively layered microstructure on various magnifications for both groups of investigated materials. The average particle diameter value for starting clay was about 23 μm and about 53 μm for treated clay. These methods showed that the starting clay changed the surface properties during thermal and chemical treatment, resulting in the merging of clay layers.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure
SP  - 67
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10800
ER  - 

@conference{
author = "Kokunešoski, Maja and Gyoshev, Stanislav and Bašćarević, Zvezdana and Ilić, Svetlana M. and Šaponjić, Aleksandra",
year = "2021",
abstract = "The clay minerals deposit from the mining basin Kolubara, Serbia, is a natural sediment material with high economic potential in many fields. The chemical composition of starting clay determined by inductively coupled plasma spectrometry shows that its main composition of SiO2 is 88.00 wt.%. Organic impurities from clay have been removed by heat treatment at 600 °C for 2 h in air. After thermal treatment, an aqueous solution of HCl sedimentary mineral was chemically treated. Surface properties of starting clay and thermally and chemically treated clay (treated clay) were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and particle size distribution method. The XRD analyses of the starting and treated clay confirmed that quartz is a significant phase, followed by the appearance of feldspar and smectite clays. The SEM method showed impressively layered microstructure on various magnifications for both groups of investigated materials. The average particle diameter value for starting clay was about 23 μm and about 53 μm for treated clay. These methods showed that the starting clay changed the surface properties during thermal and chemical treatment, resulting in the merging of clay layers.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure",
pages = "67",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10800"
}

Kokunešoski, M., Gyoshev, S., Bašćarević, Z., Ilić, S. M.,& Šaponjić, A.. (2021). Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 67.
https://hdl.handle.net/21.15107/rcub_vinar_10800

Kokunešoski M, Gyoshev S, Bašćarević Z, Ilić SM, Šaponjić A. Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:67.
https://hdl.handle.net/21.15107/rcub_vinar_10800 .

Kokunešoski, Maja, Gyoshev, Stanislav, Bašćarević, Zvezdana, Ilić, Svetlana M., Šaponjić, Aleksandra, "Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):67,
https://hdl.handle.net/21.15107/rcub_vinar_10800 .

TY  - CONF
AU  - Radosavljević-Mihajlović, A.
AU  - Stoiljković, M.
AU  - Vujković, M.
AU  - Smiljanić, S.
AU  - Šaponjić, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10835
AB  - Zeolite FAU is a synthetic product formed by various process of synthesis. The unit cell of zeolite of FAU topology contains 192 (Si, Al) O4 - tetrahedra, it has tesseral symmetry and the unit cell parameter is ~ 25 A Key words: feldspar, hyalophane, crystalochemical properties.The FAU aluminosilicate network consists of a series of β-cages, which are tetrahedrally connected via D6R secondary building units. On this paper are presented the results of structural and crystalochemical analysis zeolite FAU topology. The SEM/EDS methods and X-ray powder diffraction analysis are useful for analysis.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Structural and Chemical Properties of Zeolite FAU-Topology
SP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10835
ER  - 

@conference{
author = "Radosavljević-Mihajlović, A. and Stoiljković, M. and Vujković, M. and Smiljanić, S. and Šaponjić, Aleksandra",
year = "2021",
abstract = "Zeolite FAU is a synthetic product formed by various process of synthesis. The unit cell of zeolite of FAU topology contains 192 (Si, Al) O4 - tetrahedra, it has tesseral symmetry and the unit cell parameter is ~ 25 A Key words: feldspar, hyalophane, crystalochemical properties.The FAU aluminosilicate network consists of a series of β-cages, which are tetrahedrally connected via D6R secondary building units. On this paper are presented the results of structural and crystalochemical analysis zeolite FAU topology. The SEM/EDS methods and X-ray powder diffraction analysis are useful for analysis.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Structural and Chemical Properties of Zeolite FAU-Topology",
pages = "76",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10835"
}

Radosavljević-Mihajlović, A., Stoiljković, M., Vujković, M., Smiljanić, S.,& Šaponjić, A.. (2021). Structural and Chemical Properties of Zeolite FAU-Topology. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 76.
https://hdl.handle.net/21.15107/rcub_vinar_10835

Radosavljević-Mihajlović A, Stoiljković M, Vujković M, Smiljanić S, Šaponjić A. Structural and Chemical Properties of Zeolite FAU-Topology. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:76.
https://hdl.handle.net/21.15107/rcub_vinar_10835 .

Radosavljević-Mihajlović, A., Stoiljković, M., Vujković, M., Smiljanić, S., Šaponjić, Aleksandra, "Structural and Chemical Properties of Zeolite FAU-Topology" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):76,
https://hdl.handle.net/21.15107/rcub_vinar_10835 .

TY  - CONF
AU  - Mitić, V.
AU  - Stoiljković, M.
AU  - Vujković, M.
AU  - Smiljanić, S.
AU  - Šaponjić, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10840
AB  - The tectosilicates, including all polymorphic forms of SiO2 , feldspar, feldspatoids, scapolites as well as zeolites, represent one of the most represented groups of minerals in the lithosphere. The feldspars found great application in various fields of industry, especially in the field of aluminosilicate ceramics. In this paper are presented the crystalohemical and mineralogical properties of natural feldspar hyalophane.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - The Mineralogy of Natural Feldspar Hyalophane
SP  - 80
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10840
ER  - 

@conference{
author = "Mitić, V. and Stoiljković, M. and Vujković, M. and Smiljanić, S. and Šaponjić, Aleksandra",
year = "2021",
abstract = "The tectosilicates, including all polymorphic forms of SiO2 , feldspar, feldspatoids, scapolites as well as zeolites, represent one of the most represented groups of minerals in the lithosphere. The feldspars found great application in various fields of industry, especially in the field of aluminosilicate ceramics. In this paper are presented the crystalohemical and mineralogical properties of natural feldspar hyalophane.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "The Mineralogy of Natural Feldspar Hyalophane",
pages = "80",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10840"
}

Mitić, V., Stoiljković, M., Vujković, M., Smiljanić, S.,& Šaponjić, A.. (2021). The Mineralogy of Natural Feldspar Hyalophane. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 80.
https://hdl.handle.net/21.15107/rcub_vinar_10840

Mitić V, Stoiljković M, Vujković M, Smiljanić S, Šaponjić A. The Mineralogy of Natural Feldspar Hyalophane. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:80.
https://hdl.handle.net/21.15107/rcub_vinar_10840 .

Mitić, V., Stoiljković, M., Vujković, M., Smiljanić, S., Šaponjić, Aleksandra, "The Mineralogy of Natural Feldspar Hyalophane" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):80,
https://hdl.handle.net/21.15107/rcub_vinar_10840 .

TY  - CONF
AU  - Radosavljević-Mihajlović, A.
AU  - Šaponjić, Aleksandra
AU  - Kasić, V.
AU  - Mitić, V.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10845
AB  - The X-ray powder diffraction method on a polycrystalline sample is one of the basic methods used in the characterization of aluminosilicate minerals.The clay minerals represent a complex system, in which more than one phase is present.The main problems in analysis of clay minerals is weak crystallinity, preferential orientation, as well as the appearance of asymmetry.In this paper are presented the results of analysis of smectic type clay from Tamnava area. For investigation was use the method of X-ray powder diffraction and SEM analysis.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Characterization of Tamnava clay by X-ray powder diffraction method
SP  - 89
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10845
ER  - 

@conference{
author = "Radosavljević-Mihajlović, A. and Šaponjić, Aleksandra and Kasić, V. and Mitić, V.",
year = "2021",
abstract = "The X-ray powder diffraction method on a polycrystalline sample is one of the basic methods used in the characterization of aluminosilicate minerals.The clay minerals represent a complex system, in which more than one phase is present.The main problems in analysis of clay minerals is weak crystallinity, preferential orientation, as well as the appearance of asymmetry.In this paper are presented the results of analysis of smectic type clay from Tamnava area. For investigation was use the method of X-ray powder diffraction and SEM analysis.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Characterization of Tamnava clay by X-ray powder diffraction method",
pages = "89",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10845"
}

Radosavljević-Mihajlović, A., Šaponjić, A., Kasić, V.,& Mitić, V.. (2021). Characterization of Tamnava clay by X-ray powder diffraction method. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 89.
https://hdl.handle.net/21.15107/rcub_vinar_10845

Radosavljević-Mihajlović A, Šaponjić A, Kasić V, Mitić V. Characterization of Tamnava clay by X-ray powder diffraction method. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:89.
https://hdl.handle.net/21.15107/rcub_vinar_10845 .

Radosavljević-Mihajlović, A., Šaponjić, Aleksandra, Kasić, V., Mitić, V., "Characterization of Tamnava clay by X-ray powder diffraction method" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):89,
https://hdl.handle.net/21.15107/rcub_vinar_10845 .