TY  - JOUR
AU  - Ahmetović, Sanita
AU  - Vasiljević, Zorka Z
AU  - Rajić, Vladimir
AU  - Bartolić, Dragana
AU  - Novaković, Mirjana
AU  - Tadić, Nenad B.
AU  - Cvjetićanin, Nikola
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1578
AB  - Pure and samarium (Sm3+) - or zirconium (Zr4+)-doped TiO2 nanofibers were synthesized by  electro- 
spinning method followed by calcination at 500 °C for 1 h. As-spun fibers were smooth, straight and 
continuous, whilst EDS analysis confirmed the fiber composition and incorporation  of  dopants  in  
the  fibers. Doping with Sm3+ and Zr4+ greatly inhibited the phase transformation of anatase to 
rutile, by surrounding of Sm3+ ions through formation of Ti-O-Sm bonds  and  by  replacement  of  
Ti4+  ions  with  larger Zr4+ ions. This was confirmed by HRTEM and SAED analysis. The size of 
nanofibers was determined to be 133 nm, 175 nm and 155 nm for pure, (0.5%)Sm3+:TiO2 and 
(1%)Zr4+:TiO2, respectively. After  cal- cination, TiO2 crystal lattice with interplanar spacing of 
0.353 nm of (101) crystal  plane  was not  significantly disturbed by Sm doping whilst  crystal  
lattice  spacing  of  0.357  nm  of  (101)  planes  of anatase  phase  in  case  TiO2:1.0%Zr4+,  
significantly  differs  from  the  value  of  pure  TiO2   (0.352  nm),  thus implying that Zr was 
doped into substitutional  sites  of  the  TiO2  lattice.  The  indirect  band  gaps  were 
calculated to be in the range  3.07–3.24  eV.  TiO2:0.5%Sm3+ and  TiO2:1.0%Zr4+ exhibited  higher  
specific surface area, of 47.1  and 59.4 m2/g, respectively, than pure TiO2  fibers (19.7 m2/g). 
Effects of Sm3+ and Zr4+ dopant content on the photodegradation efficiency of methylene blue (MB) 
were studied. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ nanofibers have shown  the  highest  photocatalytic  
activity  of  97%  and 98%  with  constant  rates  0.01768  min−1  and  0.01939  min−1,  
respectively,  within180  min irradiation under
visible light.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic  activity of TiO2  nanofibers
SP  - 167423
VL  - 930
DO  - 10.1016/j.jallcom.2022.167423
ER  - 

@article{
author = "Ahmetović, Sanita and Vasiljević, Zorka Z and Rajić, Vladimir and Bartolić, Dragana and Novaković, Mirjana and Tadić, Nenad B. and Cvjetićanin, Nikola and Nikolić, Maria Vesna",
year = "2023",
abstract = "Pure and samarium (Sm3+) - or zirconium (Zr4+)-doped TiO2 nanofibers were synthesized by  electro- 
spinning method followed by calcination at 500 °C for 1 h. As-spun fibers were smooth, straight and 
continuous, whilst EDS analysis confirmed the fiber composition and incorporation  of  dopants  in  
the  fibers. Doping with Sm3+ and Zr4+ greatly inhibited the phase transformation of anatase to 
rutile, by surrounding of Sm3+ ions through formation of Ti-O-Sm bonds  and  by  replacement  of  
Ti4+  ions  with  larger Zr4+ ions. This was confirmed by HRTEM and SAED analysis. The size of 
nanofibers was determined to be 133 nm, 175 nm and 155 nm for pure, (0.5%)Sm3+:TiO2 and 
(1%)Zr4+:TiO2, respectively. After  cal- cination, TiO2 crystal lattice with interplanar spacing of 
0.353 nm of (101) crystal  plane  was not  significantly disturbed by Sm doping whilst  crystal  
lattice  spacing  of  0.357  nm  of  (101)  planes  of anatase  phase  in  case  TiO2:1.0%Zr4+,  
significantly  differs  from  the  value  of  pure  TiO2   (0.352  nm),  thus implying that Zr was 
doped into substitutional  sites  of  the  TiO2  lattice.  The  indirect  band  gaps  were 
calculated to be in the range  3.07–3.24  eV.  TiO2:0.5%Sm3+ and  TiO2:1.0%Zr4+ exhibited  higher  
specific surface area, of 47.1  and 59.4 m2/g, respectively, than pure TiO2  fibers (19.7 m2/g). 
Effects of Sm3+ and Zr4+ dopant content on the photodegradation efficiency of methylene blue (MB) 
were studied. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ nanofibers have shown  the  highest  photocatalytic  
activity  of  97%  and 98%  with  constant  rates  0.01768  min−1  and  0.01939  min−1,  
respectively,  within180  min irradiation under
visible light.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic  activity of TiO2  nanofibers",
pages = "167423",
volume = "930",
doi = "10.1016/j.jallcom.2022.167423"
}

Ahmetović, S., Vasiljević, Z. Z., Rajić, V., Bartolić, D., Novaković, M., Tadić, N. B., Cvjetićanin, N.,& Nikolić, M. V.. (2023). Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic  activity of TiO2  nanofibers. in Journal of Alloys and Compounds
Elsevier., 930, 167423.
https://doi.org/10.1016/j.jallcom.2022.167423

Ahmetović S, Vasiljević ZZ, Rajić V, Bartolić D, Novaković M, Tadić NB, Cvjetićanin N, Nikolić MV. Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic  activity of TiO2  nanofibers. in Journal of Alloys and Compounds. 2023;930:167423.
doi:10.1016/j.jallcom.2022.167423 .

Ahmetović, Sanita, Vasiljević, Zorka Z, Rajić, Vladimir, Bartolić, Dragana, Novaković, Mirjana, Tadić, Nenad B., Cvjetićanin, Nikola, Nikolić, Maria Vesna, "Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic  activity of TiO2  nanofibers" in Journal of Alloys and Compounds, 930 (2023):167423,
https://doi.org/10.1016/j.jallcom.2022.167423 . .

TY  - JOUR
AU  - Čebela, Maria
AU  - Zagorac, Dejan
AU  - Popov, Igor
AU  - Torić, Filip
AU  - Klaser, Teodoro
AU  - Skoko, Željko
AU  - Pajić, Damir
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3031
AB  - Bismuth ferrite (BFO, BiFeO3), exhibiting both ferromagnetic and ferroelectric properties at room
temperature, is one of the most researched multiferroic materials with a growing number of technological applications. In the present study, using a combined theoretical–experimental approach, we have investigated the influence of Ho-doping on the structural, electronic and magnetic properties of BFO. Synthesis and structural XRD characterization of Bi1 xHoxFeO3 (x = 0.02, 0.05, and 0.10) nanopowders have been completed. After structure prediction of Ho-doped BiFeO3 using bond valence calculations (BVC), six most favorable candidates were found: a-, b-, g-, R-, T1, and T2. Furthermore, all structure candidates have been examined for different magnetic ordering using DFT calculations. The magnetic behavior of the synthesized materials was investigated using a SQUID magnetometer equipped with an oven. The plethora of magnetic and electronic properties of the Ho-doped BFO that our theoretical research predicted can open up rich possibilities for further investigation and eventual applications.
PB  - Royal Society of Chemistry
T2  - Physical Chemistry Chemical Physics
T1  - Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite
EP  - 22358
SP  - 22345
VL  - 25
DO  - 10.1039/D3CP03259K
ER  - 

@article{
author = "Čebela, Maria and Zagorac, Dejan and Popov, Igor and Torić, Filip and Klaser, Teodoro and Skoko, Željko and Pajić, Damir",
year = "2023",
abstract = "Bismuth ferrite (BFO, BiFeO3), exhibiting both ferromagnetic and ferroelectric properties at room
temperature, is one of the most researched multiferroic materials with a growing number of technological applications. In the present study, using a combined theoretical–experimental approach, we have investigated the influence of Ho-doping on the structural, electronic and magnetic properties of BFO. Synthesis and structural XRD characterization of Bi1 xHoxFeO3 (x = 0.02, 0.05, and 0.10) nanopowders have been completed. After structure prediction of Ho-doped BiFeO3 using bond valence calculations (BVC), six most favorable candidates were found: a-, b-, g-, R-, T1, and T2. Furthermore, all structure candidates have been examined for different magnetic ordering using DFT calculations. The magnetic behavior of the synthesized materials was investigated using a SQUID magnetometer equipped with an oven. The plethora of magnetic and electronic properties of the Ho-doped BFO that our theoretical research predicted can open up rich possibilities for further investigation and eventual applications.",
publisher = "Royal Society of Chemistry",
journal = "Physical Chemistry Chemical Physics",
title = "Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite",
pages = "22358-22345",
volume = "25",
doi = "10.1039/D3CP03259K"
}

Čebela, M., Zagorac, D., Popov, I., Torić, F., Klaser, T., Skoko, Ž.,& Pajić, D.. (2023). Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite. in Physical Chemistry Chemical Physics
Royal Society of Chemistry., 25, 22345-22358.
https://doi.org/10.1039/D3CP03259K

Čebela M, Zagorac D, Popov I, Torić F, Klaser T, Skoko Ž, Pajić D. Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite. in Physical Chemistry Chemical Physics. 2023;25:22345-22358.
doi:10.1039/D3CP03259K .

Čebela, Maria, Zagorac, Dejan, Popov, Igor, Torić, Filip, Klaser, Teodoro, Skoko, Željko, Pajić, Damir, "Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite" in Physical Chemistry Chemical Physics, 25 (2023):22345-22358,
https://doi.org/10.1039/D3CP03259K . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Kremenović, Aleksandar S
AU  - Petronijević, Ivan
AU  - Džunuzović, Adis
AU  - Mirković, Miljana
AU  - Pavlović, Vladimir
AU  - Anđelković, Ljubica
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2195
AB  - To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300°C had better performances than those sintered at 1150°C. The composite synthesized by thermal decomposition and sintered at 1300 °C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic.
PB  - Association for ETRAN Society
T2  - Science of Sintering
T1  - Understanding the Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite Composites
EP  - 381
SP  - 367
VL  - 55
DO  - 10.2298/SOS220512013S
ER  - 

@article{
author = "Šuljagić, Marija and Kremenović, Aleksandar S and Petronijević, Ivan and Džunuzović, Adis and Mirković, Miljana and Pavlović, Vladimir and Anđelković, Ljubica",
year = "2023",
abstract = "To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300°C had better performances than those sintered at 1150°C. The composite synthesized by thermal decomposition and sintered at 1300 °C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic.",
publisher = "Association for ETRAN Society",
journal = "Science of Sintering",
title = "Understanding the Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite Composites",
pages = "381-367",
volume = "55",
doi = "10.2298/SOS220512013S"
}

Šuljagić, M., Kremenović, A. S., Petronijević, I., Džunuzović, A., Mirković, M., Pavlović, V.,& Anđelković, L.. (2023). Understanding the Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite Composites. in Science of Sintering
Association for ETRAN Society., 55, 367-381.
https://doi.org/10.2298/SOS220512013S

Šuljagić M, Kremenović AS, Petronijević I, Džunuzović A, Mirković M, Pavlović V, Anđelković L. Understanding the Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite Composites. in Science of Sintering. 2023;55:367-381.
doi:10.2298/SOS220512013S .

Šuljagić, Marija, Kremenović, Aleksandar S, Petronijević, Ivan, Džunuzović, Adis, Mirković, Miljana, Pavlović, Vladimir, Anđelković, Ljubica, "Understanding the Effect of Synthesis and Sintering Temperature on the Functional Properties of Barium Titanate/ Cobalt Ferrite Composites" in Science of Sintering, 55 (2023):367-381,
https://doi.org/10.2298/SOS220512013S . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Petronijević, Ivan
AU  - Mirković, Miljana
AU  - Kremenović, Aleksandar S
AU  - Džunuzović, Adis
AU  - Pavlović, Vladimir B.
AU  - Kalezić-Glišović, Aleksandra
AU  - Anđelković, Ljubica
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2103
AB  - To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.
PB  - MDPI
T2  - Inorganics
T1  - BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
IS  - 2
SP  - 51
VL  - 11
DO  - 10.3390/inorganics11020051
ER  - 

@article{
author = "Šuljagić, Marija and Petronijević, Ivan and Mirković, Miljana and Kremenović, Aleksandar S and Džunuzović, Adis and Pavlović, Vladimir B. and Kalezić-Glišović, Aleksandra and Anđelković, Ljubica",
year = "2023",
abstract = "To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.",
publisher = "MDPI",
journal = "Inorganics",
title = "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties",
number = "2",
pages = "51",
volume = "11",
doi = "10.3390/inorganics11020051"
}

Šuljagić, M., Petronijević, I., Mirković, M., Kremenović, A. S., Džunuzović, A., Pavlović, V. B., Kalezić-Glišović, A.,& Anđelković, L.. (2023). BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics
MDPI., 11(2), 51.
https://doi.org/10.3390/inorganics11020051

Šuljagić M, Petronijević I, Mirković M, Kremenović AS, Džunuzović A, Pavlović VB, Kalezić-Glišović A, Anđelković L. BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics. 2023;11(2):51.
doi:10.3390/inorganics11020051 .

Šuljagić, Marija, Petronijević, Ivan, Mirković, Miljana, Kremenović, Aleksandar S, Džunuzović, Adis, Pavlović, Vladimir B., Kalezić-Glišović, Aleksandra, Anđelković, Ljubica, "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, 11, no. 2 (2023):51,
https://doi.org/10.3390/inorganics11020051 . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Baščarević, Zvezdana
AU  - Vujasin, Radojka
AU  - Devečerski, Aleksandar
AU  - Bučevac, Dušan
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1572
AB  - Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently high to trigger formation of anorthite which stayed stable even at temperature as high as 1400°C. The highest relative density and the lowest open porosity were measured in samples sintered at 1200°C for 3 h. The effect of milling time of Ca-LTA zeolite precursor on density, microstructure and mechanical properties of samples sintered at 1200°C for 3 h was investigated. The particle size refinement appeared to be beneficial in accelerating densification process and improving mechanical properties. The density, compressive strength and hardness of anorthite ceramics obtained from non-milled precursor were measured to be 70.5 %TD, 64 MPa and 1.45 GPa, respectively. On the other side the anorthite ceramics obtained from 24-hour-long milled zeolite precursor had density of 83.9 %TD, compressive strength of 101 MPa and hardness of 3.44 GPa.
PB  - International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite
EP  - 358
IS  - 3
SP  - 349
VL  - 54
DO  - 10.2298/SOS2203349O
ER  - 

@article{
author = "Omerašević, Mia and Baščarević, Zvezdana and Vujasin, Radojka and Devečerski, Aleksandar and Bučevac, Dušan",
year = "2022",
abstract = "Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently high to trigger formation of anorthite which stayed stable even at temperature as high as 1400°C. The highest relative density and the lowest open porosity were measured in samples sintered at 1200°C for 3 h. The effect of milling time of Ca-LTA zeolite precursor on density, microstructure and mechanical properties of samples sintered at 1200°C for 3 h was investigated. The particle size refinement appeared to be beneficial in accelerating densification process and improving mechanical properties. The density, compressive strength and hardness of anorthite ceramics obtained from non-milled precursor were measured to be 70.5 %TD, 64 MPa and 1.45 GPa, respectively. On the other side the anorthite ceramics obtained from 24-hour-long milled zeolite precursor had density of 83.9 %TD, compressive strength of 101 MPa and hardness of 3.44 GPa.",
publisher = "International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite",
pages = "358-349",
number = "3",
volume = "54",
doi = "10.2298/SOS2203349O"
}

Omerašević, M., Baščarević, Z., Vujasin, R., Devečerski, A.,& Bučevac, D.. (2022). Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite. in Science of Sintering
International Institute for the Science of Sintering., 54(3), 349-358.
https://doi.org/10.2298/SOS2203349O

Omerašević M, Baščarević Z, Vujasin R, Devečerski A, Bučevac D. Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite. in Science of Sintering. 2022;54(3):349-358.
doi:10.2298/SOS2203349O .

Omerašević, Mia, Baščarević, Zvezdana, Vujasin, Radojka, Devečerski, Aleksandar, Bučevac, Dušan, "Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite" in Science of Sintering, 54, no. 3 (2022):349-358,
https://doi.org/10.2298/SOS2203349O . .

TY  - JOUR
AU  - Dučić, Tanja
AU  - Alves, Carla
AU  - Vučinić, Željko
AU  - Lázaro-Martínez, Juan
AU  - Petković, Marijana
AU  - Soto, Juan
AU  - Mutavdžić, Dragosav
AU  - Martinez de Yuso Garcia, Maria del Valle
AU  - Radotić, Ksenija
AU  - Algarra, Manuel
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1558
AB  - S and N-doped carbon dots (S-CDs and N-CDs) and their cisplatin (cis-Pt) derivatives.
(S-CDs@cis-Pt and N-CDs@cis-Pt) were tested on two ovarian cancer cell lines: A2780 and A2780 cells
resistant to cis-Pt (A2780R). Several spectroscopic techniques were employed to check S-CDs@cis-Pt and
N-CDs@cis-Pt: solid- and solution-state nuclear magnetic resonance, matrix-assisted laser desorption,
ionization time-of-flight mass spectrometry, and X-ray photoelectron spectroscopy. In addition,
synchrotron-based Fourier Transformed Infrared spectro-microscopy was used to evaluate the biochemical
changes in cells after treatment with cis-Pt, S-CDs, N-CDs, or S-CDs@cis-Pt and N-CDs@cis-Pt, respectively.
Computational chemistry was applied to establish the model for the most stable bond between
S-CDs and N-CDs and cis-Pt. The results revealed the successful modification of S-CDs and N-CDs with
cis-Pt and the formation of a stable composite system that can be used for drug delivery to cancer cells and likewise to overcome acquired cis-Pt resistance. Nanoparticle treatment of A2780 and A2780R cells
led to the changes in their structure of lipids, proteins, and nucleic acids depending on the treatment. The
results showed the S-CDs@cis-Pt and N-CDs@cis-Pt might be used in the combination with cis-Pt to treat
the adenocarcinoma, thus having a potential to be further developed as drug delivery systems.
PB  - Elsevier
T2  - Journal of Colloid and Interface Science
T1  - S, N-doped carbon dots-based cisplatin delivery system in adenocarcinoma cells: Spectroscopical and computational approach
EP  - 237
IS  - 623
SP  - 226
DO  - 10.1016/j.jcis.2022.05.005
ER  - 

@article{
author = "Dučić, Tanja and Alves, Carla and Vučinić, Željko and Lázaro-Martínez, Juan and Petković, Marijana and Soto, Juan and Mutavdžić, Dragosav and Martinez de Yuso Garcia, Maria del Valle and Radotić, Ksenija and Algarra, Manuel",
year = "2022",
abstract = "S and N-doped carbon dots (S-CDs and N-CDs) and their cisplatin (cis-Pt) derivatives.
(S-CDs@cis-Pt and N-CDs@cis-Pt) were tested on two ovarian cancer cell lines: A2780 and A2780 cells
resistant to cis-Pt (A2780R). Several spectroscopic techniques were employed to check S-CDs@cis-Pt and
N-CDs@cis-Pt: solid- and solution-state nuclear magnetic resonance, matrix-assisted laser desorption,
ionization time-of-flight mass spectrometry, and X-ray photoelectron spectroscopy. In addition,
synchrotron-based Fourier Transformed Infrared spectro-microscopy was used to evaluate the biochemical
changes in cells after treatment with cis-Pt, S-CDs, N-CDs, or S-CDs@cis-Pt and N-CDs@cis-Pt, respectively.
Computational chemistry was applied to establish the model for the most stable bond between
S-CDs and N-CDs and cis-Pt. The results revealed the successful modification of S-CDs and N-CDs with
cis-Pt and the formation of a stable composite system that can be used for drug delivery to cancer cells and likewise to overcome acquired cis-Pt resistance. Nanoparticle treatment of A2780 and A2780R cells
led to the changes in their structure of lipids, proteins, and nucleic acids depending on the treatment. The
results showed the S-CDs@cis-Pt and N-CDs@cis-Pt might be used in the combination with cis-Pt to treat
the adenocarcinoma, thus having a potential to be further developed as drug delivery systems.",
publisher = "Elsevier",
journal = "Journal of Colloid and Interface Science",
title = "S, N-doped carbon dots-based cisplatin delivery system in adenocarcinoma cells: Spectroscopical and computational approach",
pages = "237-226",
number = "623",
doi = "10.1016/j.jcis.2022.05.005"
}

Dučić, T., Alves, C., Vučinić, Ž., Lázaro-Martínez, J., Petković, M., Soto, J., Mutavdžić, D., Martinez de Yuso Garcia, M. d. V., Radotić, K.,& Algarra, M.. (2022). S, N-doped carbon dots-based cisplatin delivery system in adenocarcinoma cells: Spectroscopical and computational approach. in Journal of Colloid and Interface Science
Elsevier.(623), 226-237.
https://doi.org/10.1016/j.jcis.2022.05.005

Dučić T, Alves C, Vučinić Ž, Lázaro-Martínez J, Petković M, Soto J, Mutavdžić D, Martinez de Yuso Garcia MDV, Radotić K, Algarra M. S, N-doped carbon dots-based cisplatin delivery system in adenocarcinoma cells: Spectroscopical and computational approach. in Journal of Colloid and Interface Science. 2022;(623):226-237.
doi:10.1016/j.jcis.2022.05.005 .

Dučić, Tanja, Alves, Carla, Vučinić, Željko, Lázaro-Martínez, Juan, Petković, Marijana, Soto, Juan, Mutavdžić, Dragosav, Martinez de Yuso Garcia, Maria del Valle, Radotić, Ksenija, Algarra, Manuel, "S, N-doped carbon dots-based cisplatin delivery system in adenocarcinoma cells: Spectroscopical and computational approach" in Journal of Colloid and Interface Science, no. 623 (2022):226-237,
https://doi.org/10.1016/j.jcis.2022.05.005 . .

TY  - JOUR
AU  - Saponjic, Aleksandra
AU  - Gyoshev, Stanislav
AU  - Baščarević, Zvezdana
AU  - Jankovic Mandic, Ljiljana
AU  - Ljubenov, Gorica
AU  - Kokunesoski, Maja
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1555
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.
PB  - International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Characterization of Sedimentary Minerals from Kolubara Mining Basin, Serbia, with the Determination of Natural Radioactivity
EP  - 48
SP  - 39
VL  - 54
DO  - 10.2298/SOS2201039S
ER  - 

@article{
author = "Saponjic, Aleksandra and Gyoshev, Stanislav and Baščarević, Zvezdana and Jankovic Mandic, Ljiljana and Ljubenov, Gorica and Kokunesoski, 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.",
publisher = "International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Characterization of Sedimentary Minerals from Kolubara Mining Basin, Serbia, with the Determination of Natural Radioactivity",
pages = "48-39",
volume = "54",
doi = "10.2298/SOS2201039S"
}

Saponjic, A., Gyoshev, S., Baščarević, Z., Jankovic Mandic, L., Ljubenov, G.,& Kokunesoski, M.. (2022). Characterization of Sedimentary Minerals from Kolubara Mining Basin, Serbia, with the Determination of Natural Radioactivity. in Science of Sintering
International Institute for the Science of Sintering., 54, 39-48.
https://doi.org/10.2298/SOS2201039S

Saponjic A, Gyoshev S, Baščarević Z, Jankovic Mandic L, Ljubenov G, Kokunesoski M. Characterization of Sedimentary Minerals from Kolubara Mining Basin, Serbia, with the Determination of Natural Radioactivity. in Science of Sintering. 2022;54:39-48.
doi:10.2298/SOS2201039S .

Saponjic, Aleksandra, Gyoshev, Stanislav, Baščarević, Zvezdana, Jankovic Mandic, Ljiljana, Ljubenov, Gorica, Kokunesoski, Maja, "Characterization of Sedimentary Minerals from Kolubara Mining Basin, Serbia, with the Determination of Natural Radioactivity" in Science of Sintering, 54 (2022):39-48,
https://doi.org/10.2298/SOS2201039S . .

TY  - JOUR
AU  - Butulija, Svetlana
AU  - Spasojević, Vojislav
AU  - Branković, Goran
AU  - Prekajski-Đorđević, Marija
AU  - Radulović, Tamara
AU  - Zarubica, Aleksandra
AU  - Matović, Branko
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1539
AB  - Spider silk-maghemite (SS-gamma-Fe2O3) composite was obtained by simple and fast co-precipitation method at room temperature. The fibers were coated with maghemite nanoparticles with the average size of 25 nm. According to DTA, maghemite NPs contributed the thermal stability of the composite. Magnetic properties of as obtained composite were estimated. At room temperature, the system was is in a superparamagnetic state, while at temperature of 5 K the magnetic moments were blocked. This composite is seen as a novel hybrid material with superparamagnetic properties for possible applications in bioseparation, biosensors, magnetographic printing, magnetic screens, and magnetic filters as well as sensing/actuating components of MEMS.
PB  - Elsevier, Amsterdam
T2  - Materials Letters
T1  - Synthesis, characterization and magnetic properties of spider silk coated with maghemite (gamma-Fe2O3) nanoparticles
VL  - 314
DO  - 10.1016/j.matlet.2022.131856
ER  - 

@article{
author = "Butulija, Svetlana and Spasojević, Vojislav and Branković, Goran and Prekajski-Đorđević, Marija and Radulović, Tamara and Zarubica, Aleksandra and Matović, Branko",
year = "2022",
abstract = "Spider silk-maghemite (SS-gamma-Fe2O3) composite was obtained by simple and fast co-precipitation method at room temperature. The fibers were coated with maghemite nanoparticles with the average size of 25 nm. According to DTA, maghemite NPs contributed the thermal stability of the composite. Magnetic properties of as obtained composite were estimated. At room temperature, the system was is in a superparamagnetic state, while at temperature of 5 K the magnetic moments were blocked. This composite is seen as a novel hybrid material with superparamagnetic properties for possible applications in bioseparation, biosensors, magnetographic printing, magnetic screens, and magnetic filters as well as sensing/actuating components of MEMS.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Letters",
title = "Synthesis, characterization and magnetic properties of spider silk coated with maghemite (gamma-Fe2O3) nanoparticles",
volume = "314",
doi = "10.1016/j.matlet.2022.131856"
}

Butulija, S., Spasojević, V., Branković, G., Prekajski-Đorđević, M., Radulović, T., Zarubica, A.,& Matović, B.. (2022). Synthesis, characterization and magnetic properties of spider silk coated with maghemite (gamma-Fe2O3) nanoparticles. in Materials Letters
Elsevier, Amsterdam., 314.
https://doi.org/10.1016/j.matlet.2022.131856

Butulija S, Spasojević V, Branković G, Prekajski-Đorđević M, Radulović T, Zarubica A, Matović B. Synthesis, characterization and magnetic properties of spider silk coated with maghemite (gamma-Fe2O3) nanoparticles. in Materials Letters. 2022;314.
doi:10.1016/j.matlet.2022.131856 .

Butulija, Svetlana, Spasojević, Vojislav, Branković, Goran, Prekajski-Đorđević, Marija, Radulović, Tamara, Zarubica, Aleksandra, Matović, Branko, "Synthesis, characterization and magnetic properties of spider silk coated with maghemite (gamma-Fe2O3) nanoparticles" in Materials Letters, 314 (2022),
https://doi.org/10.1016/j.matlet.2022.131856 . .

TY  - JOUR
AU  - Djurišić, Ivana
AU  - Dražić, Miloš
AU  - Tomović, Aleksandar
AU  - Spasenović, Marko
AU  - Šljivančanin, Zeljko
AU  - Jovanović, Vladimir P.
AU  - Žikić, Radomir
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1405
AB  - Functionalization of electrodes is a wide-used strategy in various applications ranging from single-molecule sensing and protein sequencing, to ion trapping, to desalination. We demonstrate, employing non-equilibrium Green ' s function formalism combined with density functional theory, that single-species (N, H, S, Cl, F) termination of graphene nanogap electrodes results in a strong in-gap electrostatic field, induced by species-dependent dipoles formed at the electrode ends. Consequently, the field increases or decreases electronic transport through a molecule (benzene) placed in the nanogap by shifting molecular levels by almost 2 eV in respect to the electrode Fermi level via a field effect akin to the one used for field-effect transistors. We also observed the local gating in graphene nanopores terminated with different single-species atoms. Nitrogen-terminated nanogaps (NtNGs) and nanopores (NtNPs) show the strongest effect. The in-gap potential can be transformed from a plateau-like to a saddle-like shape by tailoring NtNG and NtNP size and termination type. In particular, the saddle-like potential is applicable in single-ion trapping and desalination devices.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Chemphyschem
T1  - Field Effect and Local Gating in Nitrogen-Terminated Nanopores (NtNP) and Nanogaps (NtNG) in Graphene
EP  - 341
IS  - 3
SP  - 336
VL  - 22
DO  - 10.1002/cphc.202000771
ER  - 

@article{
author = "Djurišić, Ivana and Dražić, Miloš and Tomović, Aleksandar and Spasenović, Marko and Šljivančanin, Zeljko and Jovanović, Vladimir P. and Žikić, Radomir",
year = "2021",
abstract = "Functionalization of electrodes is a wide-used strategy in various applications ranging from single-molecule sensing and protein sequencing, to ion trapping, to desalination. We demonstrate, employing non-equilibrium Green ' s function formalism combined with density functional theory, that single-species (N, H, S, Cl, F) termination of graphene nanogap electrodes results in a strong in-gap electrostatic field, induced by species-dependent dipoles formed at the electrode ends. Consequently, the field increases or decreases electronic transport through a molecule (benzene) placed in the nanogap by shifting molecular levels by almost 2 eV in respect to the electrode Fermi level via a field effect akin to the one used for field-effect transistors. We also observed the local gating in graphene nanopores terminated with different single-species atoms. Nitrogen-terminated nanogaps (NtNGs) and nanopores (NtNPs) show the strongest effect. The in-gap potential can be transformed from a plateau-like to a saddle-like shape by tailoring NtNG and NtNP size and termination type. In particular, the saddle-like potential is applicable in single-ion trapping and desalination devices.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Chemphyschem",
title = "Field Effect and Local Gating in Nitrogen-Terminated Nanopores (NtNP) and Nanogaps (NtNG) in Graphene",
pages = "341-336",
number = "3",
volume = "22",
doi = "10.1002/cphc.202000771"
}

Djurišić, I., Dražić, M., Tomović, A., Spasenović, M., Šljivančanin, Z., Jovanović, V. P.,& Žikić, R.. (2021). Field Effect and Local Gating in Nitrogen-Terminated Nanopores (NtNP) and Nanogaps (NtNG) in Graphene. in Chemphyschem
Wiley-V C H Verlag Gmbh, Weinheim., 22(3), 336-341.
https://doi.org/10.1002/cphc.202000771

Djurišić I, Dražić M, Tomović A, Spasenović M, Šljivančanin Z, Jovanović VP, Žikić R. Field Effect and Local Gating in Nitrogen-Terminated Nanopores (NtNP) and Nanogaps (NtNG) in Graphene. in Chemphyschem. 2021;22(3):336-341.
doi:10.1002/cphc.202000771 .

Djurišić, Ivana, Dražić, Miloš, Tomović, Aleksandar, Spasenović, Marko, Šljivančanin, Zeljko, Jovanović, Vladimir P., Žikić, Radomir, "Field Effect and Local Gating in Nitrogen-Terminated Nanopores (NtNP) and Nanogaps (NtNG) in Graphene" in Chemphyschem, 22, no. 3 (2021):336-341,
https://doi.org/10.1002/cphc.202000771 . .

TY  - CONF
AU  - Kokunesoski, Maja
AU  - Gyoshev, Stanislav
AU  - Baščarević, Zvezdana
AU  - Ilic, Svetlana
AU  - Saponjic, Aleksandra
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1942
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  - Serbian Ceramic Society
C3  - Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts
T1  - Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure
EP  - 67
SP  - 67
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1942
ER  - 

@conference{
author = "Kokunesoski, Maja and Gyoshev, Stanislav and Baščarević, Zvezdana and Ilic, Svetlana and Saponjic, 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 = "Serbian Ceramic Society",
journal = "Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts",
title = "Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure",
pages = "67-67",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1942"
}

Kokunesoski, M., Gyoshev, S., Baščarević, Z., Ilic, S.,& Saponjic, A.. (2021). Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure. in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts
Serbian Ceramic Society., 67-67.
https://hdl.handle.net/21.15107/rcub_rimsi_1942

Kokunesoski M, Gyoshev S, Baščarević Z, Ilic S, Saponjic A. Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure. in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts. 2021;:67-67.
https://hdl.handle.net/21.15107/rcub_rimsi_1942 .

Kokunesoski, Maja, Gyoshev, Stanislav, Baščarević, Zvezdana, Ilic, Svetlana, Saponjic, Aleksandra, "Characterization of clay mineral from Kolubara mining basin, Serbia, with a determined layered structure" in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts (2021):67-67,
https://hdl.handle.net/21.15107/rcub_rimsi_1942 .

TY  - CONF
AU  - Kokunesoski, Maja
AU  - Baščarević, Zvezdana
AU  - Ilic, Svetlana
AU  - Valenta Šobot, Ana
AU  - Grce, Ana
AU  - Pošarac-Marković, Milica
AU  - Saponjic, Aleksandra
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1939
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  - Serbian Ceramic Society
C3  - Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts
T1  - Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant
EP  - 66
SP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1939
ER  - 

@conference{
author = "Kokunesoski, Maja and Baščarević, Zvezdana and Ilic, Svetlana and Valenta Šobot, Ana and Grce, Ana and Pošarac-Marković, Milica and Saponjic, 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 = "Serbian Ceramic Society",
journal = "Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts",
title = "Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant",
pages = "66-66",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1939"
}

Kokunesoski, M., Baščarević, Z., Ilic, S., Valenta Šobot, A., Grce, A., Pošarac-Marković, M.,& Saponjic, A.. (2021). Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant. in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts
Serbian Ceramic Society., 66-66.
https://hdl.handle.net/21.15107/rcub_rimsi_1939

Kokunesoski M, Baščarević Z, Ilic S, Valenta Šobot A, Grce A, Pošarac-Marković M, Saponjic A. Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant. in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts. 2021;:66-66.
https://hdl.handle.net/21.15107/rcub_rimsi_1939 .

Kokunesoski, Maja, Baščarević, Zvezdana, Ilic, Svetlana, Valenta Šobot, Ana, Grce, Ana, Pošarac-Marković, Milica, Saponjic, Aleksandra, "Synthesis of spherical SBA-15 silica particles without the use of additional cosurfactant" in Serbian Ceramic Society Conference - ADVANCED CERAMICS AND APPLICATION IX Program and the Book of Abstracts (2021):66-66,
https://hdl.handle.net/21.15107/rcub_rimsi_1939 .

TY  - CONF
AU  - Kokunesoski, Maja
AU  - Baščarević, Zvezdana
AU  - Ilic, Svetlana
AU  - Valenta Šobot, Ana
AU  - Grce, Ana
AU  - Pošarac-Marković, Milica
AU  - Saponjic, Djordje
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1940
AB  - The template method synthesis of both SBA-15 materials with elongated and spherical particles was performed using a surfactant Pluronic P123. The HCl (p.a.) was used to synthesize material with elongated particles connected in chain structures grouped into shapes resembling sheaves of wheat. In the synthesis of spherical SBA-15 with diameters ranging from 0.5 to 2 μm, a spent HCl solution which was obtained after chemical treatment of clay was used where the dominant presence of the spheres was confirmed by the SEM method. In addition to the methods mentioned above, XRD, EDS and FTIR methods characterize SBA-15 materials.
PB  - Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2021 (Proceedings) ISBN 978-86-82475-40-8
T1  - The influence of hydrochloric acid on the features of SBA-15 particles
EP  - 441
SP  - 438
VL  - II
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1940
ER  - 

@conference{
author = "Kokunesoski, Maja and Baščarević, Zvezdana and Ilic, Svetlana and Valenta Šobot, Ana and Grce, Ana and Pošarac-Marković, Milica and Saponjic, Djordje",
year = "2021",
abstract = "The template method synthesis of both SBA-15 materials with elongated and spherical particles was performed using a surfactant Pluronic P123. The HCl (p.a.) was used to synthesize material with elongated particles connected in chain structures grouped into shapes resembling sheaves of wheat. In the synthesis of spherical SBA-15 with diameters ranging from 0.5 to 2 μm, a spent HCl solution which was obtained after chemical treatment of clay was used where the dominant presence of the spheres was confirmed by the SEM method. In addition to the methods mentioned above, XRD, EDS and FTIR methods characterize SBA-15 materials.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2021 (Proceedings) ISBN 978-86-82475-40-8",
title = "The influence of hydrochloric acid on the features of SBA-15 particles",
pages = "441-438",
volume = "II",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1940"
}

Kokunesoski, M., Baščarević, Z., Ilic, S., Valenta Šobot, A., Grce, A., Pošarac-Marković, M.,& Saponjic, D.. (2021). The influence of hydrochloric acid on the features of SBA-15 particles. in Physical Chemistry 2021 (Proceedings) ISBN 978-86-82475-40-8
Society of Physical Chemists of Serbia., II, 438-441.
https://hdl.handle.net/21.15107/rcub_rimsi_1940

Kokunesoski M, Baščarević Z, Ilic S, Valenta Šobot A, Grce A, Pošarac-Marković M, Saponjic D. The influence of hydrochloric acid on the features of SBA-15 particles. in Physical Chemistry 2021 (Proceedings) ISBN 978-86-82475-40-8. 2021;II:438-441.
https://hdl.handle.net/21.15107/rcub_rimsi_1940 .

Kokunesoski, Maja, Baščarević, Zvezdana, Ilic, Svetlana, Valenta Šobot, Ana, Grce, Ana, Pošarac-Marković, Milica, Saponjic, Djordje, "The influence of hydrochloric acid on the features of SBA-15 particles" in Physical Chemistry 2021 (Proceedings) ISBN 978-86-82475-40-8, II (2021):438-441,
https://hdl.handle.net/21.15107/rcub_rimsi_1940 .

TY  - JOUR
AU  - Stevanović, Sanja I.
AU  - Lekka, Maria
AU  - Lanzutti, Alex
AU  - Tasić, Nikola
AU  - Živković, Ljiljana S.
AU  - Fedrizzi, Lorenzo
AU  - Bajat, Jelena B.
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1377
AB  - Cerium-based conversion coatings have emerged as promising green alternatives to the harmful chromium-based ones, but the mechanism of corrosive protection still remains a subject of academic and industrial research. This study focuses at small scale phenomena of corrosion inhibition imparted by ceria (CeO2) to AA7075. Ceria nanoparticles were deposited from diluted and concentrated CeO2 sols by immersion. A multi-analytical approach, combining Atomic Force microscopy (AFM), Scanning Kelvin Probe Force Microscopy, Glow Discharge Optical Emission Spectroscopy, open circuit potential and electrochemical impedance spectroscopy was employed. Deposition of ceria films led to deactivation of cathodic sites, i.e. decreased Volta potential difference, resulting in increased corrosion inhibition. In situ AFM real-time monitoring revealed that during exposure to NaCl electrolyte, the changes in size of deposited ceria aggregates occurred: nanoparticles disintegrated/desorbed and re-deposited at the coating surface. The process was found to be dynamic in nature. Small particles size and inherent reactivity are believed to accelerate this phenomenon. Due to the greater CeO2 reservoir, this phenomenon was more pronounced with a thicker film, imparting longer term protection.
PB  - Electrochemical Soc Inc, Pennington
T2  - Journal of the Electrochemical Society
T1  - Real-Time AFM and Impedance Corrosion Monitoring of Environmentally Friendly Ceria Films on AA7075
IS  - 10
VL  - 167
DO  - 10.1149/1945-7111/ab98af
ER  - 

@article{
author = "Stevanović, Sanja I. and Lekka, Maria and Lanzutti, Alex and Tasić, Nikola and Živković, Ljiljana S. and Fedrizzi, Lorenzo and Bajat, Jelena B.",
year = "2020",
abstract = "Cerium-based conversion coatings have emerged as promising green alternatives to the harmful chromium-based ones, but the mechanism of corrosive protection still remains a subject of academic and industrial research. This study focuses at small scale phenomena of corrosion inhibition imparted by ceria (CeO2) to AA7075. Ceria nanoparticles were deposited from diluted and concentrated CeO2 sols by immersion. A multi-analytical approach, combining Atomic Force microscopy (AFM), Scanning Kelvin Probe Force Microscopy, Glow Discharge Optical Emission Spectroscopy, open circuit potential and electrochemical impedance spectroscopy was employed. Deposition of ceria films led to deactivation of cathodic sites, i.e. decreased Volta potential difference, resulting in increased corrosion inhibition. In situ AFM real-time monitoring revealed that during exposure to NaCl electrolyte, the changes in size of deposited ceria aggregates occurred: nanoparticles disintegrated/desorbed and re-deposited at the coating surface. The process was found to be dynamic in nature. Small particles size and inherent reactivity are believed to accelerate this phenomenon. Due to the greater CeO2 reservoir, this phenomenon was more pronounced with a thicker film, imparting longer term protection.",
publisher = "Electrochemical Soc Inc, Pennington",
journal = "Journal of the Electrochemical Society",
title = "Real-Time AFM and Impedance Corrosion Monitoring of Environmentally Friendly Ceria Films on AA7075",
number = "10",
volume = "167",
doi = "10.1149/1945-7111/ab98af"
}

Stevanović, S. I., Lekka, M., Lanzutti, A., Tasić, N., Živković, L. S., Fedrizzi, L.,& Bajat, J. B.. (2020). Real-Time AFM and Impedance Corrosion Monitoring of Environmentally Friendly Ceria Films on AA7075. in Journal of the Electrochemical Society
Electrochemical Soc Inc, Pennington., 167(10).
https://doi.org/10.1149/1945-7111/ab98af

Stevanović SI, Lekka M, Lanzutti A, Tasić N, Živković LS, Fedrizzi L, Bajat JB. Real-Time AFM and Impedance Corrosion Monitoring of Environmentally Friendly Ceria Films on AA7075. in Journal of the Electrochemical Society. 2020;167(10).
doi:10.1149/1945-7111/ab98af .

Stevanović, Sanja I., Lekka, Maria, Lanzutti, Alex, Tasić, Nikola, Živković, Ljiljana S., Fedrizzi, Lorenzo, Bajat, Jelena B., "Real-Time AFM and Impedance Corrosion Monitoring of Environmentally Friendly Ceria Films on AA7075" in Journal of the Electrochemical Society, 167, no. 10 (2020),
https://doi.org/10.1149/1945-7111/ab98af . .

TY  - CONF
AU  - Kokunesoski, Maja
AU  - Jankovic Mandic, Ljiljana
AU  - Baščarević, Zvezdana
AU  - Saponjic, Djordje
AU  - Ilic, Svetlana
AU  - Egelja, Adela
AU  - Saponjic, Aleksandra
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1936
AB  - The  mining  basin  Kolubara  lies  about  50  km  southwest  of  Belgrade  and  stretches  across  the  river Kolubara from Lajkovac to its mouth in the Sava River. During coal exploitation a huge amount of clay is deposited as separate layer. Clay as a raw mineral material has a high economic potential due to their low price and high abundance.  This  material  is  used  for  various  applications  such  as  filters,  heat  insulators,  absorbents,  catalyst supports,  building  materialn  and  advanced  environmental  applications.  Clay  from  Kolubara  mining  basin  is 
caracterised  by  inductively  coupled  plasma  spectroscopy  (ICP),  X-ray  diffraction  (XRD),  Scanning  electron microscopy  (SEM).  Also,  activity  concentrations  of 40K,  226Ra and  232Th  in  clay  from  Kolubara  mining,  were determined by gamma ray spectrometry with HP Ge detector.
PB  - Univeristy of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia
C3  - 7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia
T1  - Composition and natural radionuclides in clay from Kolubara mining basin, Serbia
EP  - 151
SP  - 148
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1936
ER  - 

@conference{
author = "Kokunesoski, Maja and Jankovic Mandic, Ljiljana and Baščarević, Zvezdana and Saponjic, Djordje and Ilic, Svetlana and Egelja, Adela and Saponjic, Aleksandra",
year = "2019",
abstract = "The  mining  basin  Kolubara  lies  about  50  km  southwest  of  Belgrade  and  stretches  across  the  river Kolubara from Lajkovac to its mouth in the Sava River. During coal exploitation a huge amount of clay is deposited as separate layer. Clay as a raw mineral material has a high economic potential due to their low price and high abundance.  This  material  is  used  for  various  applications  such  as  filters,  heat  insulators,  absorbents,  catalyst supports,  building  materialn  and  advanced  environmental  applications.  Clay  from  Kolubara  mining  basin  is 
caracterised  by  inductively  coupled  plasma  spectroscopy  (ICP),  X-ray  diffraction  (XRD),  Scanning  electron microscopy  (SEM).  Also,  activity  concentrations  of 40K,  226Ra and  232Th  in  clay  from  Kolubara  mining,  were determined by gamma ray spectrometry with HP Ge detector.",
publisher = "Univeristy of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia",
journal = "7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia",
title = "Composition and natural radionuclides in clay from Kolubara mining basin, Serbia",
pages = "151-148",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1936"
}

Kokunesoski, M., Jankovic Mandic, L., Baščarević, Z., Saponjic, D., Ilic, S., Egelja, A.,& Saponjic, A.. (2019). Composition and natural radionuclides in clay from Kolubara mining basin, Serbia. in 7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia
Univeristy of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia., 148-151.
https://hdl.handle.net/21.15107/rcub_rimsi_1936

Kokunesoski M, Jankovic Mandic L, Baščarević Z, Saponjic D, Ilic S, Egelja A, Saponjic A. Composition and natural radionuclides in clay from Kolubara mining basin, Serbia. in 7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia. 2019;:148-151.
https://hdl.handle.net/21.15107/rcub_rimsi_1936 .

Kokunesoski, Maja, Jankovic Mandic, Ljiljana, Baščarević, Zvezdana, Saponjic, Djordje, Ilic, Svetlana, Egelja, Adela, Saponjic, Aleksandra, "Composition and natural radionuclides in clay from Kolubara mining basin, Serbia" in 7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia (2019):148-151,
https://hdl.handle.net/21.15107/rcub_rimsi_1936 .

TY  - CONF
AU  - Saponjic, Aleksandra
AU  - Baščarević, Zvezdana
AU  - Ilic, Svetlana
AU  - Saponjic, Djordje
AU  - Egelja, Adela
AU  - Jankovic Mandic, Ljiljana
AU  - Kokunesoski, Maja
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1934
AB  - Diatomaceous earth is of sedimentary origin consists mainly of accumulated skeletons formed as a protective covering of the diatoms. Usually, high absorption capacity of diatomaceous earth provides its wide use as heat insulation, filter and absorbent material. Starting raw material diatomaceous earth from surface coal mine Kolubara, Serbia, was characterized using, scanning electron microscopy (SEM), X-ray diffraction (XRD). Chemical composition of diatomaceous earth was determined by wet chemical methods. In addition, the absorbed gamma ray dose rates is estimated based on the measured activity concentrations of natural radionuclides in clay were determined by gamma spectrometry. This research shows that this material is environmentally safe for further use.
PB  - Univeristy of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia
C3  - 7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia
T1  - Characterization and radionuclides contents of diatomaceous earth from Kolubara mining basin, Serbia
EP  - 159
SP  - 157
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1934
ER  - 

@conference{
author = "Saponjic, Aleksandra and Baščarević, Zvezdana and Ilic, Svetlana and Saponjic, Djordje and Egelja, Adela and Jankovic Mandic, Ljiljana and Kokunesoski, Maja",
year = "2019",
abstract = "Diatomaceous earth is of sedimentary origin consists mainly of accumulated skeletons formed as a protective covering of the diatoms. Usually, high absorption capacity of diatomaceous earth provides its wide use as heat insulation, filter and absorbent material. Starting raw material diatomaceous earth from surface coal mine Kolubara, Serbia, was characterized using, scanning electron microscopy (SEM), X-ray diffraction (XRD). Chemical composition of diatomaceous earth was determined by wet chemical methods. In addition, the absorbed gamma ray dose rates is estimated based on the measured activity concentrations of natural radionuclides in clay were determined by gamma spectrometry. This research shows that this material is environmentally safe for further use.",
publisher = "Univeristy of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia",
journal = "7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia",
title = "Characterization and radionuclides contents of diatomaceous earth from Kolubara mining basin, Serbia",
pages = "159-157",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1934"
}

Saponjic, A., Baščarević, Z., Ilic, S., Saponjic, D., Egelja, A., Jankovic Mandic, L.,& Kokunesoski, M.. (2019). Characterization and radionuclides contents of diatomaceous earth from Kolubara mining basin, Serbia. in 7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia
Univeristy of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia., 157-159.
https://hdl.handle.net/21.15107/rcub_rimsi_1934

Saponjic A, Baščarević Z, Ilic S, Saponjic D, Egelja A, Jankovic Mandic L, Kokunesoski M. Characterization and radionuclides contents of diatomaceous earth from Kolubara mining basin, Serbia. in 7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia. 2019;:157-159.
https://hdl.handle.net/21.15107/rcub_rimsi_1934 .

Saponjic, Aleksandra, Baščarević, Zvezdana, Ilic, Svetlana, Saponjic, Djordje, Egelja, Adela, Jankovic Mandic, Ljiljana, Kokunesoski, Maja, "Characterization and radionuclides contents of diatomaceous earth from Kolubara mining basin, Serbia" in 7th International Symposium Mining and Environmental Protection, 25-28. September 2019, Vrdnik, Serbia (2019):157-159,
https://hdl.handle.net/21.15107/rcub_rimsi_1934 .