Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča)

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Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča) (en)
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-68/2020-14/200017 (Univerzitet u Beogradu, Institut za nuklearne nauke Vinča, Beograd-Vinča) (sr_RS)
Министарство просвете, науке и технолошког развоја Републике Србије, Уговор бр. 451-03-68/2020-14/200017 (Универзитет у Београду, Институт за нуклеарне науке Винча, Београд-Винча) (sr)
Authors

Publications

A morphology-preserving algorithm for denoising of EMG-contaminated ECG signals

Atanasoski, Vladimir; Petrović, Jovana; Popović Maneski, Lana; Miletić, Marjan; Babić, Miloš; Nikolić, Aleksandra; Panescu, Dorin; Ivanović, Marija D.

(Institute of Electrical and Electronics Engineers (IEEE), 2024)

TY  - JOUR
AU  - Atanasoski, Vladimir
AU  - Petrović, Jovana
AU  - Popović Maneski, Lana
AU  - Miletić, Marjan
AU  - Babić, Miloš
AU  - Nikolić, Aleksandra
AU  - Panescu, Dorin
AU  - Ivanović, Marija D.
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/16515
AB  - Goal: Clinical interpretation of an electrocardiogram (ECG) can be detrimentally affected by noise. Removal of the electromyographic (EMG) noise is particularly challenging due to its spectral overlap with the QRS complex. The existing EMG-denoising algorithms often distort signal morphology, thus obscuring diagnostically relevant information. Methods: Here, a new iterative regeneration method (IRM) for efficient EMG-noise suppression is proposed. The main hypothesis is that the temporary removal of the dominant ECG components enables extraction of the noise with the minimum alteration to the signal. The method is validated on SimEMG database of simultaneously recorded reference and noisy signals, MIT-BIH arrhythmia database and synthesized ECG signals, both with the noise from MIT Noise Stress Test Database. Results: IRM denoising and morphology-preserving performance is superior to the wavelet- and FIR-based benchmark methods. Conclusions : IRM is reliable, computationally non-intensive, fast and applicable to any number of ECG channels recorded by mobile or standard ECG devices.
PB  - Institute of Electrical and Electronics Engineers (IEEE)
T2  - IEEE Open Journal of Engineering in Medicine and Biology
T1  - A morphology-preserving algorithm for denoising of EMG-contaminated ECG signals
SP  - 1
EP  - 10
DO  - 10.1109/OJEMB.2024.3380352
UR  - https://hdl.handle.net/21.15107/rcub_dais_16515
ER  - 
@article{
author = "Atanasoski, Vladimir and Petrović, Jovana and Popović Maneski, Lana and Miletić, Marjan and Babić, Miloš and Nikolić, Aleksandra and Panescu, Dorin and Ivanović, Marija D.",
year = "2024",
abstract = "Goal: Clinical interpretation of an electrocardiogram (ECG) can be detrimentally affected by noise. Removal of the electromyographic (EMG) noise is particularly challenging due to its spectral overlap with the QRS complex. The existing EMG-denoising algorithms often distort signal morphology, thus obscuring diagnostically relevant information. Methods: Here, a new iterative regeneration method (IRM) for efficient EMG-noise suppression is proposed. The main hypothesis is that the temporary removal of the dominant ECG components enables extraction of the noise with the minimum alteration to the signal. The method is validated on SimEMG database of simultaneously recorded reference and noisy signals, MIT-BIH arrhythmia database and synthesized ECG signals, both with the noise from MIT Noise Stress Test Database. Results: IRM denoising and morphology-preserving performance is superior to the wavelet- and FIR-based benchmark methods. Conclusions : IRM is reliable, computationally non-intensive, fast and applicable to any number of ECG channels recorded by mobile or standard ECG devices.",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
journal = "IEEE Open Journal of Engineering in Medicine and Biology",
title = "A morphology-preserving algorithm for denoising of EMG-contaminated ECG signals",
pages = "1-10",
doi = "10.1109/OJEMB.2024.3380352",
url = "https://hdl.handle.net/21.15107/rcub_dais_16515"
}
Atanasoski, V., Petrović, J., Popović Maneski, L., Miletić, M., Babić, M., Nikolić, A., Panescu, D.,& Ivanović, M. D.. (2024). A morphology-preserving algorithm for denoising of EMG-contaminated ECG signals. in IEEE Open Journal of Engineering in Medicine and Biology
Institute of Electrical and Electronics Engineers (IEEE)., 1-10.
https://doi.org/10.1109/OJEMB.2024.3380352
https://hdl.handle.net/21.15107/rcub_dais_16515
Atanasoski V, Petrović J, Popović Maneski L, Miletić M, Babić M, Nikolić A, Panescu D, Ivanović MD. A morphology-preserving algorithm for denoising of EMG-contaminated ECG signals. in IEEE Open Journal of Engineering in Medicine and Biology. 2024;:1-10.
doi:10.1109/OJEMB.2024.3380352
https://hdl.handle.net/21.15107/rcub_dais_16515 .
Atanasoski, Vladimir, Petrović, Jovana, Popović Maneski, Lana, Miletić, Marjan, Babić, Miloš, Nikolić, Aleksandra, Panescu, Dorin, Ivanović, Marija D., "A morphology-preserving algorithm for denoising of EMG-contaminated ECG signals" in IEEE Open Journal of Engineering in Medicine and Biology (2024):1-10,
https://doi.org/10.1109/OJEMB.2024.3380352 .,
https://hdl.handle.net/21.15107/rcub_dais_16515 .

Acute Toxicity Assessment of Orally Administered Microplastic Particles in Adult Male Wistar Rats

Guševac Stojanović, Ivana; Drakulić, Dunja; Todorović, Ana; Martinović, Jelena; Filipović, Nenad; Stojanović, Zoran

(Basel : MDPI AG, 2024)

TY  - JOUR
AU  - Guševac Stojanović, Ivana
AU  - Drakulić, Dunja
AU  - Todorović, Ana
AU  - Martinović, Jelena
AU  - Filipović, Nenad
AU  - Stojanović, Zoran
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/16514
AB  - While the effects of chronic exposure to microplastic particles (MPs) are extensively studied, the outcomes of a single treatment have received relatively less attention. To investigate MPs’ potential acute toxicity, including their impact on general health status (victual consumption, sensorimotor deficits, and clinical toxicity signs) and serum biochemical parameters (markers of organ/tissue function and oxidative stress indicators), we administered thoroughly characterized MPs (1.4, 35, or 125 mg/kg), generated from polyethylene terephthalate (PET) bottles, to adult male Wistar rats via oral gavage. The MPs’ short-term effects were assessed with well-established tests and methods. The results point to the absence of sensorimotor deficits and clinical toxicity signs, while levels of markers of liver, heart, and kidney function were altered in all MP groups. Decreased victual consumption and increased levels of oxidative stress indicators were evident following treatment with the two higher MP doses. Presented data indicate that examined MPs are able to initiate the development of local changes in tissues and organs within a short time frame, potentially leading to their damage and dysfunction. This study may increase the awareness of the detrimental effects of plastic contamination, as even a single exposure to MPs may provoke adverse health outcomes.
PB  - Basel : MDPI AG
T2  - Toxics
T1  - Acute Toxicity Assessment of Orally Administered Microplastic Particles in Adult Male Wistar Rats
SP  - 167
VL  - 12
IS  - 3
DO  - 10.3390/toxics12030167
UR  - https://hdl.handle.net/21.15107/rcub_dais_16514
ER  - 
@article{
author = "Guševac Stojanović, Ivana and Drakulić, Dunja and Todorović, Ana and Martinović, Jelena and Filipović, Nenad and Stojanović, Zoran",
year = "2024",
abstract = "While the effects of chronic exposure to microplastic particles (MPs) are extensively studied, the outcomes of a single treatment have received relatively less attention. To investigate MPs’ potential acute toxicity, including their impact on general health status (victual consumption, sensorimotor deficits, and clinical toxicity signs) and serum biochemical parameters (markers of organ/tissue function and oxidative stress indicators), we administered thoroughly characterized MPs (1.4, 35, or 125 mg/kg), generated from polyethylene terephthalate (PET) bottles, to adult male Wistar rats via oral gavage. The MPs’ short-term effects were assessed with well-established tests and methods. The results point to the absence of sensorimotor deficits and clinical toxicity signs, while levels of markers of liver, heart, and kidney function were altered in all MP groups. Decreased victual consumption and increased levels of oxidative stress indicators were evident following treatment with the two higher MP doses. Presented data indicate that examined MPs are able to initiate the development of local changes in tissues and organs within a short time frame, potentially leading to their damage and dysfunction. This study may increase the awareness of the detrimental effects of plastic contamination, as even a single exposure to MPs may provoke adverse health outcomes.",
publisher = "Basel : MDPI AG",
journal = "Toxics",
title = "Acute Toxicity Assessment of Orally Administered Microplastic Particles in Adult Male Wistar Rats",
pages = "167",
volume = "12",
number = "3",
doi = "10.3390/toxics12030167",
url = "https://hdl.handle.net/21.15107/rcub_dais_16514"
}
Guševac Stojanović, I., Drakulić, D., Todorović, A., Martinović, J., Filipović, N.,& Stojanović, Z.. (2024). Acute Toxicity Assessment of Orally Administered Microplastic Particles in Adult Male Wistar Rats. in Toxics
Basel : MDPI AG., 12(3), 167.
https://doi.org/10.3390/toxics12030167
https://hdl.handle.net/21.15107/rcub_dais_16514
Guševac Stojanović I, Drakulić D, Todorović A, Martinović J, Filipović N, Stojanović Z. Acute Toxicity Assessment of Orally Administered Microplastic Particles in Adult Male Wistar Rats. in Toxics. 2024;12(3):167.
doi:10.3390/toxics12030167
https://hdl.handle.net/21.15107/rcub_dais_16514 .
Guševac Stojanović, Ivana, Drakulić, Dunja, Todorović, Ana, Martinović, Jelena, Filipović, Nenad, Stojanović, Zoran, "Acute Toxicity Assessment of Orally Administered Microplastic Particles in Adult Male Wistar Rats" in Toxics, 12, no. 3 (2024):167,
https://doi.org/10.3390/toxics12030167 .,
https://hdl.handle.net/21.15107/rcub_dais_16514 .

Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material

Sknepnek, Aleksandra; Filipović, Suzana; Pavlović, Vladimir B.; Mirković, Nemanja; Miletić, Dunja; Gržetić, Jelena; Mirković, Miljana

(Basel : MDPI AG, 2024)


                                            

                                            
Sknepnek, A., Filipović, S., Pavlović, V. B., Mirković, N., Miletić, D., Gržetić, J.,& Mirković, M.. (2024). Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material. in Polymers
Basel : MDPI AG., 16(4), 470.
https://doi.org/10.3390/polym16040470
https://hdl.handle.net/21.15107/rcub_dais_16384
Sknepnek A, Filipović S, Pavlović VB, Mirković N, Miletić D, Gržetić J, Mirković M. Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material. in Polymers. 2024;16(4):470.
doi:10.3390/polym16040470
https://hdl.handle.net/21.15107/rcub_dais_16384 .
Sknepnek, Aleksandra, Filipović, Suzana, Pavlović, Vladimir B., Mirković, Nemanja, Miletić, Dunja, Gržetić, Jelena, Mirković, Miljana, "Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material" in Polymers, 16, no. 4 (2024):470,
https://doi.org/10.3390/polym16040470 .,
https://hdl.handle.net/21.15107/rcub_dais_16384 .
1

Spark plasma sintering of magnesium titanate ceramics

Filipović, Suzana; Obradović, Nina; Fahrenholtz, William; Smith, Steven; Mirković, Miljana M.; Peleš Tadić, Adriana; Petrović, Jovana; Đorđević, Antonije

(2024)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Fahrenholtz, William
AU  - Smith, Steven
AU  - Mirković, Miljana M.
AU  - Peleš Tadić, Adriana
AU  - Petrović, Jovana
AU  - Đorđević, Antonije
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/16383
AB  - Magnesium titanate ceramics were prepared by reactive spark plasma sintering (SPS) at 1200 °C for 5 min. Prior to sintering, MgO and TiO2 powders were mixed by high energy ball milling (HEBM) for 15, 30, or 60 min. The effect of milling time on phase composition was analyzed by X-ray diffraction (XRD) for milled powders and sintered specimens. The morphology of the sintered ceramics was investigated by scanning electron microscopy (SEM), while elemental distribution was determined by energy dispersive spectroscopy (EDS). The presence of the MgTi2O5 phase was detected in XRD and was confirmed by EDS analysis. Microcracking was observed for specimens prepared with longer milling times and attributed to the coefficient of thermal expansion (CTE) mismatch dominantly due to the anisotropic crystal structure of MgTiO3 phase. The sample milled for 15 min showed the highest Vickers hardness due to less or no microcracking and nearly full density. The dielectric measurements in the range of 10 Hz–250 MHz demonstrated extremely high dielectric permittivity, as high as 104 at 1 kHz. An increase in loss tangents was observed due to oxygen vacancy formation, which was promoted by the vacuum environment during SPS. Oxygen vacancy-related dielectric relaxation was also detected and explained.
T2  - Ceramics International
T1  - Spark plasma sintering of magnesium titanate ceramics
DO  - 10.1016/j.ceramint.2024.02.004
UR  - https://hdl.handle.net/21.15107/rcub_dais_16383
ER  - 
@article{
author = "Filipović, Suzana and Obradović, Nina and Fahrenholtz, William and Smith, Steven and Mirković, Miljana M. and Peleš Tadić, Adriana and Petrović, Jovana and Đorđević, Antonije",
year = "2024",
abstract = "Magnesium titanate ceramics were prepared by reactive spark plasma sintering (SPS) at 1200 °C for 5 min. Prior to sintering, MgO and TiO2 powders were mixed by high energy ball milling (HEBM) for 15, 30, or 60 min. The effect of milling time on phase composition was analyzed by X-ray diffraction (XRD) for milled powders and sintered specimens. The morphology of the sintered ceramics was investigated by scanning electron microscopy (SEM), while elemental distribution was determined by energy dispersive spectroscopy (EDS). The presence of the MgTi2O5 phase was detected in XRD and was confirmed by EDS analysis. Microcracking was observed for specimens prepared with longer milling times and attributed to the coefficient of thermal expansion (CTE) mismatch dominantly due to the anisotropic crystal structure of MgTiO3 phase. The sample milled for 15 min showed the highest Vickers hardness due to less or no microcracking and nearly full density. The dielectric measurements in the range of 10 Hz–250 MHz demonstrated extremely high dielectric permittivity, as high as 104 at 1 kHz. An increase in loss tangents was observed due to oxygen vacancy formation, which was promoted by the vacuum environment during SPS. Oxygen vacancy-related dielectric relaxation was also detected and explained.",
journal = "Ceramics International",
title = "Spark plasma sintering of magnesium titanate ceramics",
doi = "10.1016/j.ceramint.2024.02.004",
url = "https://hdl.handle.net/21.15107/rcub_dais_16383"
}
Filipović, S., Obradović, N., Fahrenholtz, W., Smith, S., Mirković, M. M., Peleš Tadić, A., Petrović, J.,& Đorđević, A.. (2024). Spark plasma sintering of magnesium titanate ceramics. in Ceramics International.
https://doi.org/10.1016/j.ceramint.2024.02.004
https://hdl.handle.net/21.15107/rcub_dais_16383
Filipović S, Obradović N, Fahrenholtz W, Smith S, Mirković MM, Peleš Tadić A, Petrović J, Đorđević A. Spark plasma sintering of magnesium titanate ceramics. in Ceramics International. 2024;.
doi:10.1016/j.ceramint.2024.02.004
https://hdl.handle.net/21.15107/rcub_dais_16383 .
Filipović, Suzana, Obradović, Nina, Fahrenholtz, William, Smith, Steven, Mirković, Miljana M., Peleš Tadić, Adriana, Petrović, Jovana, Đorđević, Antonije, "Spark plasma sintering of magnesium titanate ceramics" in Ceramics International (2024),
https://doi.org/10.1016/j.ceramint.2024.02.004 .,
https://hdl.handle.net/21.15107/rcub_dais_16383 .

CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study

Milić, Mirjana; Jović Orsini, Nataša; Marković, Smilja

(2024)

TY  - JOUR
AU  - Milić, Mirjana
AU  - Jović Orsini, Nataša
AU  - Marković, Smilja
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/15767
AB  - Four samples containing magnetic iron oxide nanoparticles (MIONs) of various sizes are prepared employing a simple low-temperature method of oxidative precipitation from FeCl2∙4H2O-NaOH-NaNO3 aqueous solution. For the preparation of two samples, the usual oxidation-precipitation synthesis protocol is modified by using ethylenediaminetetraacetic acid (EDTA) chelating agent as a stabilizer of the Fe2+ ions in a solution, which results in the partial capping of the prepared MIONs with EDTA molecules. Three out of four samples are subjected to citric acid (CA) functionalization in the post synthesis protocol. Structural and magnetic properties of the synthesized MIONs are assessed using various experimental techniques (XRD, TEM, Fourier transform infrared, dynamic light scattering, Mössbauer, and SQUID). The average size of spherical-like MIONs is tuned from 7 nm to 38 nm by changing the synthesis protocol. Their room temperature saturation magnetization, M s, is in the range of 43 to 91 emu g−1. Magnetic heating ability, expressed via specific absorption rate value, which ranges from 139 to 390 W/gFe, is discussed in relation to their structural and magnetic properties and the possible energy dissipation mechanisms involved. The best heating performance is exhibited by the sample decorated with EDTA and with a bimodal size distribution with average particle sizes of 14 and 37 nm and M s = 87 emu g−1. Though this sample contains particles prone to form aggregates, capping with EDTA provides good colloidal stability of this sample, thus preserving the magnetic heating ability. It is demonstrated that two samples, consisting of 7 nm-sized CA- or 14 nm-sized EDTA/CA-functionalized superparamagnetic MIONs, with a similar hydrodynamic radius, heat in a very similar way in the relatively fast oscillating alternating current magnetic field, f = 577 kHz.
T2  - Journal of Physics D: Applied Physics
T1  - CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study
SP  - 025001
VL  - 57
IS  - 2
DO  - 10.1088/1361-6463/acff06
UR  - https://hdl.handle.net/21.15107/rcub_dais_15767
ER  - 
@article{
author = "Milić, Mirjana and Jović Orsini, Nataša and Marković, Smilja",
year = "2024",
abstract = "Four samples containing magnetic iron oxide nanoparticles (MIONs) of various sizes are prepared employing a simple low-temperature method of oxidative precipitation from FeCl2∙4H2O-NaOH-NaNO3 aqueous solution. For the preparation of two samples, the usual oxidation-precipitation synthesis protocol is modified by using ethylenediaminetetraacetic acid (EDTA) chelating agent as a stabilizer of the Fe2+ ions in a solution, which results in the partial capping of the prepared MIONs with EDTA molecules. Three out of four samples are subjected to citric acid (CA) functionalization in the post synthesis protocol. Structural and magnetic properties of the synthesized MIONs are assessed using various experimental techniques (XRD, TEM, Fourier transform infrared, dynamic light scattering, Mössbauer, and SQUID). The average size of spherical-like MIONs is tuned from 7 nm to 38 nm by changing the synthesis protocol. Their room temperature saturation magnetization, M s, is in the range of 43 to 91 emu g−1. Magnetic heating ability, expressed via specific absorption rate value, which ranges from 139 to 390 W/gFe, is discussed in relation to their structural and magnetic properties and the possible energy dissipation mechanisms involved. The best heating performance is exhibited by the sample decorated with EDTA and with a bimodal size distribution with average particle sizes of 14 and 37 nm and M s = 87 emu g−1. Though this sample contains particles prone to form aggregates, capping with EDTA provides good colloidal stability of this sample, thus preserving the magnetic heating ability. It is demonstrated that two samples, consisting of 7 nm-sized CA- or 14 nm-sized EDTA/CA-functionalized superparamagnetic MIONs, with a similar hydrodynamic radius, heat in a very similar way in the relatively fast oscillating alternating current magnetic field, f = 577 kHz.",
journal = "Journal of Physics D: Applied Physics",
title = "CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study",
pages = "025001",
volume = "57",
number = "2",
doi = "10.1088/1361-6463/acff06",
url = "https://hdl.handle.net/21.15107/rcub_dais_15767"
}
Milić, M., Jović Orsini, N.,& Marković, S.. (2024). CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study. in Journal of Physics D: Applied Physics, 57(2), 025001.
https://doi.org/10.1088/1361-6463/acff06
https://hdl.handle.net/21.15107/rcub_dais_15767
Milić M, Jović Orsini N, Marković S. CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study. in Journal of Physics D: Applied Physics. 2024;57(2):025001.
doi:10.1088/1361-6463/acff06
https://hdl.handle.net/21.15107/rcub_dais_15767 .
Milić, Mirjana, Jović Orsini, Nataša, Marković, Smilja, "CA and/or EDTA functionalized magnetic iron oxide nanoparticles by oxidative precipitation from FeCl2 solution: structural and magnetic study" in Journal of Physics D: Applied Physics, 57, no. 2 (2024):025001,
https://doi.org/10.1088/1361-6463/acff06 .,
https://hdl.handle.net/21.15107/rcub_dais_15767 .

Investigating on the microstructure and optical properties of Au, Ag and Cu implanted TiN thin films: The effects of surface oxidation and ion-induced defects

Popović, M.; Novaković, M.; Pjević, Dejan J.; Vaňa, Dušan; Jugović, Dragana; Tošić, D.; Noga, Pavol

(Elsevier, 2024)

TY  - JOUR
AU  - Popović, M.
AU  - Novaković, M.
AU  - Pjević, Dejan J.
AU  - Vaňa, Dušan
AU  - Jugović, Dragana
AU  - Tošić, D.
AU  - Noga, Pavol
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/16162
AB  - In the present paper, the effects of metal ion implantation on the structural and optical properties of TiN thin films have been investigated. TiN films of 170 nm thickness were grown by d.c. reactive sputtering on Si (100) wafers and then irradiated at 5 × 1016 ions/cm2 with either Au, Ag, or Cu ions by using two different energies per each implanted metal. The results showed that as deposited TiN crystallizes in the form of a fcc cubic structure, with the crystallites preferentially oriented along the (111) plane. For all implanted layers, the cubic structure was preserved, but compared to as deposited TiN the crystallites were smaller and the lattice was contracted. These changes were correlated with the depth distribution of Au, Ag and Cu ions and assigned to implantation-induced damage that was larger when higher ion energies were used. High-resolution XPS spectra of the surface of as deposited sample showed the coexistence of TiN, TiO2 and TiOxNy phases and this was related to the surface oxidation of the films due to the exposure to air. After implantation, the results were almost similar for all metals, showing an increase in TiO2 contribution and the formation of pure metallic Au and Ag phases, while copper is in the Cu2+ state, which is attributed to Cu(II)-oxide and Cu(OH)2. The microstructural characteristics including defect formation, changes in crystallite size and lattice contraction, and also growth of different metallic phases during implantations were correlated with the findings of the optical characterization of the implanted films. For the as deposited film we found an energy gap of 2.91 eV, which was lower than the value typical for TiN. After implantation the gap was shifted to higher energies, while at the visible part of the region, the existence of additional energy levels, at photon energies below 2.9 eV was observed. Besides, all implanted films showed degraded photocatalytic activity compared to as deposited TiN, among which Cu-implanted samples exhibited the best photocatalytic performances. The lower photocatalytic activity of Au and Ag implanted films compared to Cu implantations was ascribed to larger structural defects and the formation of less favorable electronic states.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - Investigating on the microstructure and optical properties of Au, Ag and Cu implanted TiN thin films: The effects of surface oxidation and ion-induced defects
SP  - 173046
VL  - 976
DO  - 10.1016/j.jallcom.2023.173046
UR  - https://hdl.handle.net/21.15107/rcub_dais_16162
ER  - 
@article{
author = "Popović, M. and Novaković, M. and Pjević, Dejan J. and Vaňa, Dušan and Jugović, Dragana and Tošić, D. and Noga, Pavol",
year = "2024",
abstract = "In the present paper, the effects of metal ion implantation on the structural and optical properties of TiN thin films have been investigated. TiN films of 170 nm thickness were grown by d.c. reactive sputtering on Si (100) wafers and then irradiated at 5 × 1016 ions/cm2 with either Au, Ag, or Cu ions by using two different energies per each implanted metal. The results showed that as deposited TiN crystallizes in the form of a fcc cubic structure, with the crystallites preferentially oriented along the (111) plane. For all implanted layers, the cubic structure was preserved, but compared to as deposited TiN the crystallites were smaller and the lattice was contracted. These changes were correlated with the depth distribution of Au, Ag and Cu ions and assigned to implantation-induced damage that was larger when higher ion energies were used. High-resolution XPS spectra of the surface of as deposited sample showed the coexistence of TiN, TiO2 and TiOxNy phases and this was related to the surface oxidation of the films due to the exposure to air. After implantation, the results were almost similar for all metals, showing an increase in TiO2 contribution and the formation of pure metallic Au and Ag phases, while copper is in the Cu2+ state, which is attributed to Cu(II)-oxide and Cu(OH)2. The microstructural characteristics including defect formation, changes in crystallite size and lattice contraction, and also growth of different metallic phases during implantations were correlated with the findings of the optical characterization of the implanted films. For the as deposited film we found an energy gap of 2.91 eV, which was lower than the value typical for TiN. After implantation the gap was shifted to higher energies, while at the visible part of the region, the existence of additional energy levels, at photon energies below 2.9 eV was observed. Besides, all implanted films showed degraded photocatalytic activity compared to as deposited TiN, among which Cu-implanted samples exhibited the best photocatalytic performances. The lower photocatalytic activity of Au and Ag implanted films compared to Cu implantations was ascribed to larger structural defects and the formation of less favorable electronic states.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "Investigating on the microstructure and optical properties of Au, Ag and Cu implanted TiN thin films: The effects of surface oxidation and ion-induced defects",
pages = "173046",
volume = "976",
doi = "10.1016/j.jallcom.2023.173046",
url = "https://hdl.handle.net/21.15107/rcub_dais_16162"
}
Popović, M., Novaković, M., Pjević, D. J., Vaňa, D., Jugović, D., Tošić, D.,& Noga, P.. (2024). Investigating on the microstructure and optical properties of Au, Ag and Cu implanted TiN thin films: The effects of surface oxidation and ion-induced defects. in Journal of Alloys and Compounds
Elsevier., 976, 173046.
https://doi.org/10.1016/j.jallcom.2023.173046
https://hdl.handle.net/21.15107/rcub_dais_16162
Popović M, Novaković M, Pjević DJ, Vaňa D, Jugović D, Tošić D, Noga P. Investigating on the microstructure and optical properties of Au, Ag and Cu implanted TiN thin films: The effects of surface oxidation and ion-induced defects. in Journal of Alloys and Compounds. 2024;976:173046.
doi:10.1016/j.jallcom.2023.173046
https://hdl.handle.net/21.15107/rcub_dais_16162 .
Popović, M., Novaković, M., Pjević, Dejan J., Vaňa, Dušan, Jugović, Dragana, Tošić, D., Noga, Pavol, "Investigating on the microstructure and optical properties of Au, Ag and Cu implanted TiN thin films: The effects of surface oxidation and ion-induced defects" in Journal of Alloys and Compounds, 976 (2024):173046,
https://doi.org/10.1016/j.jallcom.2023.173046 .,
https://hdl.handle.net/21.15107/rcub_dais_16162 .

Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals

Dinić, Ivana; Vuković, Marina; Rabanal, Maria Eugenia; Milošević, Milica; Bukumira, Marta; Tomić, Nina; Tomić, Miloš; Mančić, Lidija; Ignjatović, Nenad

(Basel : MDPI AG, 2024)

TY  - JOUR
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Milica
AU  - Bukumira, Marta
AU  - Tomić, Nina
AU  - Tomić, Miloš
AU  - Mančić, Lidija
AU  - Ignjatović, Nenad
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/16211
AB  - Y0.8−xGdxF3:Yb/Er mesocrystals with a biocompatible surface and diverse morphological characteristics were successfully synthesized using chitosan-assisted solvothermal processing. Their structural properties, studied using X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy and energy dispersive X-ray analysis, were further correlated with the up-conversion emission (λexc = 976 nm) recorded in function of temperature. Based on the change in the visible green emissions originating from the thermally coupled 2H11/2 and 4S3/2 levels of Er3+, the corresponding LIR was acquired in the physiologically relevant range of temperatures (25–50 °C). The detected absolute sensitivity of about 0.0042 °C−1, along with the low cytotoxicity toward both normal human lung fibroblasts (MRC-5) and cancerous lung epithelial (A549) cells, indicate a potential for use in temperature sensing in biomedicine. Additionally, their enhanced internalization in cells, without suppression of cell viability, enabled in vitro labeling of cancer and healthy cells upon 976 nm laser irradiation.
PB  - Basel : MDPI AG
T2  - Journal of Functional Biomaterials
T1  - Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals
SP  - 6
VL  - 15
IS  - 1
DO  - 10.3390/jfb15010006
UR  - https://hdl.handle.net/21.15107/rcub_dais_16211
ER  - 
@article{
author = "Dinić, Ivana and Vuković, Marina and Rabanal, Maria Eugenia and Milošević, Milica and Bukumira, Marta and Tomić, Nina and Tomić, Miloš and Mančić, Lidija and Ignjatović, Nenad",
year = "2024",
abstract = "Y0.8−xGdxF3:Yb/Er mesocrystals with a biocompatible surface and diverse morphological characteristics were successfully synthesized using chitosan-assisted solvothermal processing. Their structural properties, studied using X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy and energy dispersive X-ray analysis, were further correlated with the up-conversion emission (λexc = 976 nm) recorded in function of temperature. Based on the change in the visible green emissions originating from the thermally coupled 2H11/2 and 4S3/2 levels of Er3+, the corresponding LIR was acquired in the physiologically relevant range of temperatures (25–50 °C). The detected absolute sensitivity of about 0.0042 °C−1, along with the low cytotoxicity toward both normal human lung fibroblasts (MRC-5) and cancerous lung epithelial (A549) cells, indicate a potential for use in temperature sensing in biomedicine. Additionally, their enhanced internalization in cells, without suppression of cell viability, enabled in vitro labeling of cancer and healthy cells upon 976 nm laser irradiation.",
publisher = "Basel : MDPI AG",
journal = "Journal of Functional Biomaterials",
title = "Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals",
pages = "6",
volume = "15",
number = "1",
doi = "10.3390/jfb15010006",
url = "https://hdl.handle.net/21.15107/rcub_dais_16211"
}
Dinić, I., Vuković, M., Rabanal, M. E., Milošević, M., Bukumira, M., Tomić, N., Tomić, M., Mančić, L.,& Ignjatović, N.. (2024). Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals. in Journal of Functional Biomaterials
Basel : MDPI AG., 15(1), 6.
https://doi.org/10.3390/jfb15010006
https://hdl.handle.net/21.15107/rcub_dais_16211
Dinić I, Vuković M, Rabanal ME, Milošević M, Bukumira M, Tomić N, Tomić M, Mančić L, Ignjatović N. Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals. in Journal of Functional Biomaterials. 2024;15(1):6.
doi:10.3390/jfb15010006
https://hdl.handle.net/21.15107/rcub_dais_16211 .
Dinić, Ivana, Vuković, Marina, Rabanal, Maria Eugenia, Milošević, Milica, Bukumira, Marta, Tomić, Nina, Tomić, Miloš, Mančić, Lidija, Ignjatović, Nenad, "Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals" in Journal of Functional Biomaterials, 15, no. 1 (2024):6,
https://doi.org/10.3390/jfb15010006 .,
https://hdl.handle.net/21.15107/rcub_dais_16211 .

Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus

Stamenković, Tijana; Ranđelović, Marjan; Čebela, Maria; Vuković, Marina; Dinić, Ivana; Mančić, Lidija; Lojpur, Vesna

(Belgrade : Institut za multidisciplinarna istraživanja, 2023)

TY  - CONF
AU  - Stamenković, Tijana
AU  - Ranđelović, Marjan
AU  - Čebela, Maria
AU  - Vuković, Marina
AU  - Dinić, Ivana
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14662
AB  - The aim of this research was to investigate for the first-time photocatalytic degradation of methylene blue over SrGd2O4 powders co-doped with constant Er3+ (0.5 at.%) and different Yb3+ (1, 2.5 and 5 at.%) concentrations. Samples were successfully prepared via sol-gel assisted combustion method. They exhibit photoluminescence properties which are manifested as red emission at 661 nm (4F9/2 → 4I15/2) and two green emissions at 551 and 523 nm (4S3/2 → 4I15/2 and 2H11/2 → 4I15/2). X-ray Powder Diffraction pattern proved that all samples crystallize as a pure orthorhombic phase. Scanning electron microscopy was used for morphology characterization and it revealed the existence of porous agglomerated round-shaped particles. Energy dispersive X-ray spectroscopy showed the presence of dopant ions and even distribution of all constituting elements. To calculate the energy band gap, UV-VIS diffuse reflectance spectroscopy was performed and a value of 4.3 eV was obtained, as well as the four additional values from the bands at lower energies. Photocatalytic degradation of methylene blue was monitored using UV-VIS absorption spectroscopy. Obtained results were promising since after 4 h of exposure to the simulating Sun irradiation, more than 50% of the starting dye concentration was mineralized.
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus
UR  - https://hdl.handle.net/21.15107/rcub_dais_14662
ER  - 
@conference{
author = "Stamenković, Tijana and Ranđelović, Marjan and Čebela, Maria and Vuković, Marina and Dinić, Ivana and Mančić, Lidija and Lojpur, Vesna",
year = "2023",
abstract = "The aim of this research was to investigate for the first-time photocatalytic degradation of methylene blue over SrGd2O4 powders co-doped with constant Er3+ (0.5 at.%) and different Yb3+ (1, 2.5 and 5 at.%) concentrations. Samples were successfully prepared via sol-gel assisted combustion method. They exhibit photoluminescence properties which are manifested as red emission at 661 nm (4F9/2 → 4I15/2) and two green emissions at 551 and 523 nm (4S3/2 → 4I15/2 and 2H11/2 → 4I15/2). X-ray Powder Diffraction pattern proved that all samples crystallize as a pure orthorhombic phase. Scanning electron microscopy was used for morphology characterization and it revealed the existence of porous agglomerated round-shaped particles. Energy dispersive X-ray spectroscopy showed the presence of dopant ions and even distribution of all constituting elements. To calculate the energy band gap, UV-VIS diffuse reflectance spectroscopy was performed and a value of 4.3 eV was obtained, as well as the four additional values from the bands at lower energies. Photocatalytic degradation of methylene blue was monitored using UV-VIS absorption spectroscopy. Obtained results were promising since after 4 h of exposure to the simulating Sun irradiation, more than 50% of the starting dye concentration was mineralized.",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus",
url = "https://hdl.handle.net/21.15107/rcub_dais_14662"
}
Stamenković, T., Ranđelović, M., Čebela, M., Vuković, M., Dinić, I., Mančić, L.,& Lojpur, V.. (2023). Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja..
https://hdl.handle.net/21.15107/rcub_dais_14662
Stamenković T, Ranđelović M, Čebela M, Vuković M, Dinić I, Mančić L, Lojpur V. Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_14662 .
Stamenković, Tijana, Ranđelović, Marjan, Čebela, Maria, Vuković, Marina, Dinić, Ivana, Mančić, Lidija, Lojpur, Vesna, "Characterization and photocatalytic activity of newly synthesized Er and Yb doped SrGd2O4 nanophosphorus" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_dais_14662 .

Effect of mechanical activation on carbothermal synthesis and densification of ZrC

Obradović, Nina; Feng, Lun; Filipović, Suzana; Mirković, Miljana; Kosanović, Darko; Rogan, Jelena; Fahrenholtz, William G.

(Elsevier BV, 2023)

TY  - JOUR
AU  - Obradović, Nina
AU  - Feng, Lun
AU  - Filipović, Suzana
AU  - Mirković, Miljana
AU  - Kosanović, Darko
AU  - Rogan, Jelena
AU  - Fahrenholtz, William G.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14877
AB  - Zirconium carbide ceramics were prepared by carbothermal reduction of ZrO2 and C that were mixed by high-energy ball milling. Powders were milled for times from 0 to 120 min in air. As milling time increased, the surface area of the powders increased, indicating significant particle size reduction. Milled powders were reacted at 1600 °C and then densified by spark plasma sintering at 2000 °C, which was sufficient to convert the starting powders to zirconium carbide. Unmilled powders did not reach full density. Milled powders reached full density, but ZrO2 impurities were found for specimens prepared from powders milled for 60 and 120 min. Microstructure analysis showed that grain size was less than 2 µm for ceramics produced from powder milled for 15 min. Based on densification onset temperature and impurity levels, a milling time of 15 min gives the best balance of particle size reduction to promote densification while minimizing impurity levels.
PB  - Elsevier BV
T2  - Journal of the European Ceramic Society
T1  - Effect of mechanical activation on carbothermal synthesis and densification of ZrC
SP  - 7306
EP  - 7313
VL  - 43
DO  - 10.1016/j.jeurceramsoc.2023.08.007
UR  - https://hdl.handle.net/21.15107/rcub_dais_14877
ER  - 
@article{
author = "Obradović, Nina and Feng, Lun and Filipović, Suzana and Mirković, Miljana and Kosanović, Darko and Rogan, Jelena and Fahrenholtz, William G.",
year = "2023",
abstract = "Zirconium carbide ceramics were prepared by carbothermal reduction of ZrO2 and C that were mixed by high-energy ball milling. Powders were milled for times from 0 to 120 min in air. As milling time increased, the surface area of the powders increased, indicating significant particle size reduction. Milled powders were reacted at 1600 °C and then densified by spark plasma sintering at 2000 °C, which was sufficient to convert the starting powders to zirconium carbide. Unmilled powders did not reach full density. Milled powders reached full density, but ZrO2 impurities were found for specimens prepared from powders milled for 60 and 120 min. Microstructure analysis showed that grain size was less than 2 µm for ceramics produced from powder milled for 15 min. Based on densification onset temperature and impurity levels, a milling time of 15 min gives the best balance of particle size reduction to promote densification while minimizing impurity levels.",
publisher = "Elsevier BV",
journal = "Journal of the European Ceramic Society",
title = "Effect of mechanical activation on carbothermal synthesis and densification of ZrC",
pages = "7306-7313",
volume = "43",
doi = "10.1016/j.jeurceramsoc.2023.08.007",
url = "https://hdl.handle.net/21.15107/rcub_dais_14877"
}
Obradović, N., Feng, L., Filipović, S., Mirković, M., Kosanović, D., Rogan, J.,& Fahrenholtz, W. G.. (2023). Effect of mechanical activation on carbothermal synthesis and densification of ZrC. in Journal of the European Ceramic Society
Elsevier BV., 43, 7306-7313.
https://doi.org/10.1016/j.jeurceramsoc.2023.08.007
https://hdl.handle.net/21.15107/rcub_dais_14877
Obradović N, Feng L, Filipović S, Mirković M, Kosanović D, Rogan J, Fahrenholtz WG. Effect of mechanical activation on carbothermal synthesis and densification of ZrC. in Journal of the European Ceramic Society. 2023;43:7306-7313.
doi:10.1016/j.jeurceramsoc.2023.08.007
https://hdl.handle.net/21.15107/rcub_dais_14877 .
Obradović, Nina, Feng, Lun, Filipović, Suzana, Mirković, Miljana, Kosanović, Darko, Rogan, Jelena, Fahrenholtz, William G., "Effect of mechanical activation on carbothermal synthesis and densification of ZrC" in Journal of the European Ceramic Society, 43 (2023):7306-7313,
https://doi.org/10.1016/j.jeurceramsoc.2023.08.007 .,
https://hdl.handle.net/21.15107/rcub_dais_14877 .
1
1

Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric

Milošević, Milica V.; Radoičić, Marija; Ohara, Satoshi; Abe, Hiroya; Spasojević, Jelena; Mančić, Lidija; Šaponjić, Zoran

(Springer Science and Business Media LLC, 2023)

TY  - JOUR
AU  - Milošević, Milica V.
AU  - Radoičić, Marija
AU  - Ohara, Satoshi
AU  - Abe, Hiroya
AU  - Spasojević, Jelena
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14403
AB  - Novel cotton-based TiO2/Ag/TiO2 nanocomposites for wastewater treatment were developed by fine chemical synthesis path with the goal of coping with wastewater issues and environmental remediation. The photocatalytic performances of nanocomposites were tested during photodegradation processes of RB, AO7 and MR under simulated solar light. Double- and single-loaded nanocomposites were synthesized by a simple bottom-up approach implying in situ photoreduction of Ag+ ions on the surface of TiO2 NPs previously deposited on cotton fibers from colloids. The spherical-like colloidal TiO2 NPs (4.5 nm) and TiO2/Ag NPs (8 nm) and the formation of uniform TiO2/Ag and TiO2/Ag/TiO2 nano-coatings on cotton fibers were examined by TEM and FESEM. The reduction of Ag+ ions on TiO2 surface was undoubtedly proven by the appearance of SPR band of Ag NPs in UV/Vis spectra. Raman spectroscopy clearly confirmed the presence of anatase TiO2 in nanocomposites. Quantitative determination of TiO2 and Ag in nanocomposites was accomplished using EDX and ICP–OES. The cotton-based TiO2/Ag/TiO2 nanocomposite showed the highest photocatalytic efficiency (> 90%) and maintained its removal efficiency after three reuse cycles, indicated its exceptional photochemical ability. The initial idea of improved photocatalytic performances of a TiO2 NPs double-layer with immobilized Ag NPs was justified as the TiO2/Ag/TiO2 processed sample contributed additional binding sites for dye molecules. Considering that the photocatalytic activity of the cotton-based TiO2 and TiO2/Ag samples was practically imperceptible, it can be assumed that the synthesized Ag NPs act predominantly as electron traps in the double-loaded synthesized system.
PB  - Springer Science and Business Media LLC
T2  - Cellulose
T1  - Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric
SP  - 4749
EP  - 4771
VL  - 30
DO  - 10.1007/s10570-023-05165-0
UR  - https://hdl.handle.net/21.15107/rcub_dais_14403
ER  - 
@article{
author = "Milošević, Milica V. and Radoičić, Marija and Ohara, Satoshi and Abe, Hiroya and Spasojević, Jelena and Mančić, Lidija and Šaponjić, Zoran",
year = "2023",
abstract = "Novel cotton-based TiO2/Ag/TiO2 nanocomposites for wastewater treatment were developed by fine chemical synthesis path with the goal of coping with wastewater issues and environmental remediation. The photocatalytic performances of nanocomposites were tested during photodegradation processes of RB, AO7 and MR under simulated solar light. Double- and single-loaded nanocomposites were synthesized by a simple bottom-up approach implying in situ photoreduction of Ag+ ions on the surface of TiO2 NPs previously deposited on cotton fibers from colloids. The spherical-like colloidal TiO2 NPs (4.5 nm) and TiO2/Ag NPs (8 nm) and the formation of uniform TiO2/Ag and TiO2/Ag/TiO2 nano-coatings on cotton fibers were examined by TEM and FESEM. The reduction of Ag+ ions on TiO2 surface was undoubtedly proven by the appearance of SPR band of Ag NPs in UV/Vis spectra. Raman spectroscopy clearly confirmed the presence of anatase TiO2 in nanocomposites. Quantitative determination of TiO2 and Ag in nanocomposites was accomplished using EDX and ICP–OES. The cotton-based TiO2/Ag/TiO2 nanocomposite showed the highest photocatalytic efficiency (> 90%) and maintained its removal efficiency after three reuse cycles, indicated its exceptional photochemical ability. The initial idea of improved photocatalytic performances of a TiO2 NPs double-layer with immobilized Ag NPs was justified as the TiO2/Ag/TiO2 processed sample contributed additional binding sites for dye molecules. Considering that the photocatalytic activity of the cotton-based TiO2 and TiO2/Ag samples was practically imperceptible, it can be assumed that the synthesized Ag NPs act predominantly as electron traps in the double-loaded synthesized system.",
publisher = "Springer Science and Business Media LLC",
journal = "Cellulose",
title = "Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric",
pages = "4749-4771",
volume = "30",
doi = "10.1007/s10570-023-05165-0",
url = "https://hdl.handle.net/21.15107/rcub_dais_14403"
}
Milošević, M. V., Radoičić, M., Ohara, S., Abe, H., Spasojević, J., Mančić, L.,& Šaponjić, Z.. (2023). Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric. in Cellulose
Springer Science and Business Media LLC., 30, 4749-4771.
https://doi.org/10.1007/s10570-023-05165-0
https://hdl.handle.net/21.15107/rcub_dais_14403
Milošević MV, Radoičić M, Ohara S, Abe H, Spasojević J, Mančić L, Šaponjić Z. Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric. in Cellulose. 2023;30:4749-4771.
doi:10.1007/s10570-023-05165-0
https://hdl.handle.net/21.15107/rcub_dais_14403 .
Milošević, Milica V., Radoičić, Marija, Ohara, Satoshi, Abe, Hiroya, Spasojević, Jelena, Mančić, Lidija, Šaponjić, Zoran, "Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric" in Cellulose, 30 (2023):4749-4771,
https://doi.org/10.1007/s10570-023-05165-0 .,
https://hdl.handle.net/21.15107/rcub_dais_14403 .
3
2

Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric

Milošević, Milica V.; Radoičić, Marija; Ohara, Satoshi; Abe, Hiroya; Spasojević, Jelena; Mančić, Lidija; Šaponjić, Zoran

(Springer Science and Business Media LLC, 2023)

TY  - JOUR
AU  - Milošević, Milica V.
AU  - Radoičić, Marija
AU  - Ohara, Satoshi
AU  - Abe, Hiroya
AU  - Spasojević, Jelena
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14316
AB  - Novel cotton-based TiO2/Ag/TiO2 nanocomposites for wastewater treatment were developed by fine chemical synthesis path with the goal of coping with wastewater issues and environmental remediation. The photocatalytic performances of nanocomposites were tested during photodegradation processes of RB, AO7 and MR under simulated solar light. Double- and single-loaded nanocomposites were synthesized by a simple bottom-up approach implying in situ photoreduction of Ag+ ions on the surface of TiO2 NPs previously deposited on cotton fibers from colloids. The spherical-like colloidal TiO2 NPs (4.5 nm) and TiO2/Ag NPs (8 nm) and the formation of uniform TiO2/Ag and TiO2/Ag/TiO2 nano-coatings on cotton fibers were examined by TEM and FESEM. The reduction of Ag+ ions on TiO2 surface was undoubtedly proven by the appearance of SPR band of Ag NPs in UV/Vis spectra. Raman spectroscopy clearly confirmed the presence of anatase TiO2 in nanocomposites. Quantitative determination of TiO2 and Ag in nanocomposites was accomplished using EDX and ICP–OES. The cotton-based TiO2/Ag/TiO2 nanocomposite showed the highest photocatalytic efficiency (> 90%) and maintained its removal efficiency after three reuse cycles, indicated its exceptional photochemical ability. The initial idea of improved photocatalytic performances of a TiO2 NPs double-layer with immobilized Ag NPs was justified as the TiO2/Ag/TiO2 processed sample contributed additional binding sites for dye molecules. Considering that the photocatalytic activity of the cotton-based TiO2 and TiO2/Ag samples was practically imperceptible, it can be assumed that the synthesized Ag NPs act predominantly as electron traps in the double-loaded synthesized system.
PB  - Springer Science and Business Media LLC
T2  - Cellulose
T1  - Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric
SP  - 4749
EP  - 4771
VL  - 30
DO  - 10.1007/s10570-023-05165-0
UR  - https://hdl.handle.net/21.15107/rcub_dais_14316
ER  - 
@article{
author = "Milošević, Milica V. and Radoičić, Marija and Ohara, Satoshi and Abe, Hiroya and Spasojević, Jelena and Mančić, Lidija and Šaponjić, Zoran",
year = "2023",
abstract = "Novel cotton-based TiO2/Ag/TiO2 nanocomposites for wastewater treatment were developed by fine chemical synthesis path with the goal of coping with wastewater issues and environmental remediation. The photocatalytic performances of nanocomposites were tested during photodegradation processes of RB, AO7 and MR under simulated solar light. Double- and single-loaded nanocomposites were synthesized by a simple bottom-up approach implying in situ photoreduction of Ag+ ions on the surface of TiO2 NPs previously deposited on cotton fibers from colloids. The spherical-like colloidal TiO2 NPs (4.5 nm) and TiO2/Ag NPs (8 nm) and the formation of uniform TiO2/Ag and TiO2/Ag/TiO2 nano-coatings on cotton fibers were examined by TEM and FESEM. The reduction of Ag+ ions on TiO2 surface was undoubtedly proven by the appearance of SPR band of Ag NPs in UV/Vis spectra. Raman spectroscopy clearly confirmed the presence of anatase TiO2 in nanocomposites. Quantitative determination of TiO2 and Ag in nanocomposites was accomplished using EDX and ICP–OES. The cotton-based TiO2/Ag/TiO2 nanocomposite showed the highest photocatalytic efficiency (> 90%) and maintained its removal efficiency after three reuse cycles, indicated its exceptional photochemical ability. The initial idea of improved photocatalytic performances of a TiO2 NPs double-layer with immobilized Ag NPs was justified as the TiO2/Ag/TiO2 processed sample contributed additional binding sites for dye molecules. Considering that the photocatalytic activity of the cotton-based TiO2 and TiO2/Ag samples was practically imperceptible, it can be assumed that the synthesized Ag NPs act predominantly as electron traps in the double-loaded synthesized system.",
publisher = "Springer Science and Business Media LLC",
journal = "Cellulose",
title = "Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric",
pages = "4749-4771",
volume = "30",
doi = "10.1007/s10570-023-05165-0",
url = "https://hdl.handle.net/21.15107/rcub_dais_14316"
}
Milošević, M. V., Radoičić, M., Ohara, S., Abe, H., Spasojević, J., Mančić, L.,& Šaponjić, Z.. (2023). Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric. in Cellulose
Springer Science and Business Media LLC., 30, 4749-4771.
https://doi.org/10.1007/s10570-023-05165-0
https://hdl.handle.net/21.15107/rcub_dais_14316
Milošević MV, Radoičić M, Ohara S, Abe H, Spasojević J, Mančić L, Šaponjić Z. Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric. in Cellulose. 2023;30:4749-4771.
doi:10.1007/s10570-023-05165-0
https://hdl.handle.net/21.15107/rcub_dais_14316 .
Milošević, Milica V., Radoičić, Marija, Ohara, Satoshi, Abe, Hiroya, Spasojević, Jelena, Mančić, Lidija, Šaponjić, Zoran, "Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric" in Cellulose, 30 (2023):4749-4771,
https://doi.org/10.1007/s10570-023-05165-0 .,
https://hdl.handle.net/21.15107/rcub_dais_14316 .
3

A database of simultaneously recorded ECG signals with and without EMG noise

Atanasoski, Vladimir; Petrovic, Jovana; Popović Maneski, Lana; Miletić, Marjan; Babić, Miloš; Nikolić, Aleksandra; Panescu, Dorin; Ivanović, Marija D.

(Institute of Electrical and Electronics Engineers (IEEE), 2023)

TY  - JOUR
AU  - Atanasoski, Vladimir
AU  - Petrovic, Jovana
AU  - Popović Maneski, Lana
AU  - Miletić, Marjan
AU  - Babić, Miloš
AU  - Nikolić, Aleksandra
AU  - Panescu, Dorin
AU  - Ivanović, Marija D.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15362
AB  - Goal: Noise on recorded electrocardiographic (ECG) signals may affect their clinical interpretation. Electromyographic (EMG) noise spectrally coincides with the QRS complex, which makes its removal particularly challenging. The problem of evaluating the noise-removal techniques has commonly been approached by algorithm testing on the contaminated ECG signals constructed ad hoc as an additive mixture of a noise-free ECG signal and noise. Consequently, there is an absence of a unique/standard database for testing and comparing different denoising methods. We present a SimEMG database recorded by a novel acquisition method that allows for direct recording of the genuine EMG-noise-free and -contaminated ECG signals. The database is available as open source.
PB  - Institute of Electrical and Electronics Engineers (IEEE)
T2  - IEEE Open Journal of Engineering in Medicine and Biology
T1  - A database of simultaneously recorded ECG signals with and without EMG noise
SP  - 222
EP  - 4
VL  - 225
DO  - 10.1109/OJEMB.2023.3330295
UR  - https://hdl.handle.net/21.15107/rcub_dais_15362
ER  - 
@article{
author = "Atanasoski, Vladimir and Petrovic, Jovana and Popović Maneski, Lana and Miletić, Marjan and Babić, Miloš and Nikolić, Aleksandra and Panescu, Dorin and Ivanović, Marija D.",
year = "2023",
abstract = "Goal: Noise on recorded electrocardiographic (ECG) signals may affect their clinical interpretation. Electromyographic (EMG) noise spectrally coincides with the QRS complex, which makes its removal particularly challenging. The problem of evaluating the noise-removal techniques has commonly been approached by algorithm testing on the contaminated ECG signals constructed ad hoc as an additive mixture of a noise-free ECG signal and noise. Consequently, there is an absence of a unique/standard database for testing and comparing different denoising methods. We present a SimEMG database recorded by a novel acquisition method that allows for direct recording of the genuine EMG-noise-free and -contaminated ECG signals. The database is available as open source.",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
journal = "IEEE Open Journal of Engineering in Medicine and Biology",
title = "A database of simultaneously recorded ECG signals with and without EMG noise",
pages = "222-4",
volume = "225",
doi = "10.1109/OJEMB.2023.3330295",
url = "https://hdl.handle.net/21.15107/rcub_dais_15362"
}
Atanasoski, V., Petrovic, J., Popović Maneski, L., Miletić, M., Babić, M., Nikolić, A., Panescu, D.,& Ivanović, M. D.. (2023). A database of simultaneously recorded ECG signals with and without EMG noise. in IEEE Open Journal of Engineering in Medicine and Biology
Institute of Electrical and Electronics Engineers (IEEE)., 225, 222-4.
https://doi.org/10.1109/OJEMB.2023.3330295
https://hdl.handle.net/21.15107/rcub_dais_15362
Atanasoski V, Petrovic J, Popović Maneski L, Miletić M, Babić M, Nikolić A, Panescu D, Ivanović MD. A database of simultaneously recorded ECG signals with and without EMG noise. in IEEE Open Journal of Engineering in Medicine and Biology. 2023;225:222-4.
doi:10.1109/OJEMB.2023.3330295
https://hdl.handle.net/21.15107/rcub_dais_15362 .
Atanasoski, Vladimir, Petrovic, Jovana, Popović Maneski, Lana, Miletić, Marjan, Babić, Miloš, Nikolić, Aleksandra, Panescu, Dorin, Ivanović, Marija D., "A database of simultaneously recorded ECG signals with and without EMG noise" in IEEE Open Journal of Engineering in Medicine and Biology, 225 (2023):222-4,
https://doi.org/10.1109/OJEMB.2023.3330295 .,
https://hdl.handle.net/21.15107/rcub_dais_15362 .

Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase

Stamenković, Tijana; Dinić, Ivana; Vuković, Marina; Radmilović, Nadežda; Barudžija, Tanja; Tomić, Miloš; Mančić, Lidija; Lojpur, Vesna

(Elsevier, 2023)

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Radmilović, Nadežda
AU  - Barudžija, Tanja
AU  - Tomić, Miloš
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15138
AB  - In this investigation, samples of strontium-gadolinium-oxide (SrGd2O4) doped with different Yb3+ (2, 4 and 6 at%) and constant Ho3+ (1 at%) contents and co-doped with Bi3+ (2 at%) were prepared using the glycine-assisted sol–gel method. The pure orthorhombic SrGd2O4 phase, space group Pnma, was revealed using X-ray diffraction in all samples. Transmission electron microscopy discovered agglomerated clusters of spherical particles measuring approximately 150 nm in size. The inclusion of Bi3+ ions into the structure influenced the morphology since the formation of larger grains was observed, with sizes reaching up to ∼1.7 μm. The uniform distribution of all constitutive elements was confirmed by energy-dispersive X-ray spectroscopy. In all samples, up-conversion emission spectra revealed two dominant green (540 and 550 nm), red (671 nm), and infrared (758 nm) emission lines, due to the 5F4,5S2→5I8, 5F5→5I8, and 5F4,5S2 → 5I7 transitions, respectively. The sample co-doped with Bi3+ showed the most intense photoluminescent emissions, shorter luminescence decay, and the highest quantum yield. Additionally, a significant decrease in the energy band gap value was detected using diffuse reflectance spectroscopy for this sample. Methylene blue was used as a test pollutant to investigate its photocatalytic efficiency under simulated sunlight irradiation. The results show that Bi3+ co-doping deteriorates the photocatalytic efficiency of the SrGd2O4:Yb3+/Ho3+ phase by reducing hydroxyl radical formation.
PB  - Elsevier
T2  - Ceramics International
T1  - Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase
SP  - 37758
EP  - 37767
VL  - 49
IS  - 23
DO  - 10.1016/j.ceramint.2023.09.103
UR  - https://hdl.handle.net/21.15107/rcub_dais_15138
ER  - 
@article{
author = "Stamenković, Tijana and Dinić, Ivana and Vuković, Marina and Radmilović, Nadežda and Barudžija, Tanja and Tomić, Miloš and Mančić, Lidija and Lojpur, Vesna",
year = "2023",
abstract = "In this investigation, samples of strontium-gadolinium-oxide (SrGd2O4) doped with different Yb3+ (2, 4 and 6 at%) and constant Ho3+ (1 at%) contents and co-doped with Bi3+ (2 at%) were prepared using the glycine-assisted sol–gel method. The pure orthorhombic SrGd2O4 phase, space group Pnma, was revealed using X-ray diffraction in all samples. Transmission electron microscopy discovered agglomerated clusters of spherical particles measuring approximately 150 nm in size. The inclusion of Bi3+ ions into the structure influenced the morphology since the formation of larger grains was observed, with sizes reaching up to ∼1.7 μm. The uniform distribution of all constitutive elements was confirmed by energy-dispersive X-ray spectroscopy. In all samples, up-conversion emission spectra revealed two dominant green (540 and 550 nm), red (671 nm), and infrared (758 nm) emission lines, due to the 5F4,5S2→5I8, 5F5→5I8, and 5F4,5S2 → 5I7 transitions, respectively. The sample co-doped with Bi3+ showed the most intense photoluminescent emissions, shorter luminescence decay, and the highest quantum yield. Additionally, a significant decrease in the energy band gap value was detected using diffuse reflectance spectroscopy for this sample. Methylene blue was used as a test pollutant to investigate its photocatalytic efficiency under simulated sunlight irradiation. The results show that Bi3+ co-doping deteriorates the photocatalytic efficiency of the SrGd2O4:Yb3+/Ho3+ phase by reducing hydroxyl radical formation.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase",
pages = "37758-37767",
volume = "49",
number = "23",
doi = "10.1016/j.ceramint.2023.09.103",
url = "https://hdl.handle.net/21.15107/rcub_dais_15138"
}
Stamenković, T., Dinić, I., Vuković, M., Radmilović, N., Barudžija, T., Tomić, M., Mančić, L.,& Lojpur, V.. (2023). Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase. in Ceramics International
Elsevier., 49(23), 37758-37767.
https://doi.org/10.1016/j.ceramint.2023.09.103
https://hdl.handle.net/21.15107/rcub_dais_15138
Stamenković T, Dinić I, Vuković M, Radmilović N, Barudžija T, Tomić M, Mančić L, Lojpur V. Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase. in Ceramics International. 2023;49(23):37758-37767.
doi:10.1016/j.ceramint.2023.09.103
https://hdl.handle.net/21.15107/rcub_dais_15138 .
Stamenković, Tijana, Dinić, Ivana, Vuković, Marina, Radmilović, Nadežda, Barudžija, Tanja, Tomić, Miloš, Mančić, Lidija, Lojpur, Vesna, "Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase" in Ceramics International, 49, no. 23 (2023):37758-37767,
https://doi.org/10.1016/j.ceramint.2023.09.103 .,
https://hdl.handle.net/21.15107/rcub_dais_15138 .

Influence of mechanochemical activation on the thermal behavior of pyrophyllite

Mitrović Rajić, Anđela; Pantić, Tijana; Milošević-Govedarović, Sanja; Paskaš Mamula, Bojana; Filipović, Nenad; Grbović Novaković, Jasmina; Dimitrijević, Silvana

(Belgrade : ETRAN, 2023)

TY  - JOUR
AU  - Mitrović Rajić, Anđela
AU  - Pantić, Tijana
AU  - Milošević-Govedarović, Sanja
AU  - Paskaš Mamula, Bojana
AU  - Filipović, Nenad
AU  - Grbović Novaković, Jasmina
AU  - Dimitrijević, Silvana
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16244
AB  - The effect of mechanical milling on the thermal behavior of pyrophyllite ore from a deposit in Parsovići, Bosnia and Herzegovina, was characterized by X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and Particle size distribution. The thermal behavior of the material was followed by thermogravimetric and differential thermal analysis and correlated to its microstructural properties. The Williamson-Hall model was used to calculate the crystallite size and microstrain. Mechanochemical treatment of pyrophyllite ore produced a substantial structural modification, mainly along the c axis, resulting in disorder and partial degradation of the crystal structure of the ore. The particle size diminution, induced defects, and microstrain in the crystal lattice cause decrease in the peak intensity until the final disappearance. As confirmed by scanning electron microscopy and particle-size-distribution analysis, the surface area and the agglomeration is more pronounced as grinding time increases. Dehydroxylation of the minerals in the unmilled ore was realized at 716oC confirm by FTIR analysis. The endothermic peak that corresponds to dehydroxylation is shifted toward lower temperatures and becomes broad giving rise to the formation of amorphous SiO2 as milling time increases.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - Influence of mechanochemical activation on the thermal behavior of pyrophyllite
SP  - 453
EP  - 467
VL  - 55
IS  - 4
DO  - 10.2298/SOS220715018M
UR  - https://hdl.handle.net/21.15107/rcub_dais_16244
ER  - 
@article{
author = "Mitrović Rajić, Anđela and Pantić, Tijana and Milošević-Govedarović, Sanja and Paskaš Mamula, Bojana and Filipović, Nenad and Grbović Novaković, Jasmina and Dimitrijević, Silvana",
year = "2023",
abstract = "The effect of mechanical milling on the thermal behavior of pyrophyllite ore from a deposit in Parsovići, Bosnia and Herzegovina, was characterized by X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and Particle size distribution. The thermal behavior of the material was followed by thermogravimetric and differential thermal analysis and correlated to its microstructural properties. The Williamson-Hall model was used to calculate the crystallite size and microstrain. Mechanochemical treatment of pyrophyllite ore produced a substantial structural modification, mainly along the c axis, resulting in disorder and partial degradation of the crystal structure of the ore. The particle size diminution, induced defects, and microstrain in the crystal lattice cause decrease in the peak intensity until the final disappearance. As confirmed by scanning electron microscopy and particle-size-distribution analysis, the surface area and the agglomeration is more pronounced as grinding time increases. Dehydroxylation of the minerals in the unmilled ore was realized at 716oC confirm by FTIR analysis. The endothermic peak that corresponds to dehydroxylation is shifted toward lower temperatures and becomes broad giving rise to the formation of amorphous SiO2 as milling time increases.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "Influence of mechanochemical activation on the thermal behavior of pyrophyllite",
pages = "453-467",
volume = "55",
number = "4",
doi = "10.2298/SOS220715018M",
url = "https://hdl.handle.net/21.15107/rcub_dais_16244"
}
Mitrović Rajić, A., Pantić, T., Milošević-Govedarović, S., Paskaš Mamula, B., Filipović, N., Grbović Novaković, J.,& Dimitrijević, S.. (2023). Influence of mechanochemical activation on the thermal behavior of pyrophyllite. in Science of Sintering
Belgrade : ETRAN., 55(4), 453-467.
https://doi.org/10.2298/SOS220715018M
https://hdl.handle.net/21.15107/rcub_dais_16244
Mitrović Rajić A, Pantić T, Milošević-Govedarović S, Paskaš Mamula B, Filipović N, Grbović Novaković J, Dimitrijević S. Influence of mechanochemical activation on the thermal behavior of pyrophyllite. in Science of Sintering. 2023;55(4):453-467.
doi:10.2298/SOS220715018M
https://hdl.handle.net/21.15107/rcub_dais_16244 .
Mitrović Rajić, Anđela, Pantić, Tijana, Milošević-Govedarović, Sanja, Paskaš Mamula, Bojana, Filipović, Nenad, Grbović Novaković, Jasmina, Dimitrijević, Silvana, "Influence of mechanochemical activation on the thermal behavior of pyrophyllite" in Science of Sintering, 55, no. 4 (2023):453-467,
https://doi.org/10.2298/SOS220715018M .,
https://hdl.handle.net/21.15107/rcub_dais_16244 .

Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite

Janićijević, Aleksandra; Filipović, Suzana; Sknepnek, Aleksandra; Vlahović, Branislav; Đorđević, Nenad; Kovacević, Danijela; Mirković, Miljana; Petronijević, Ivan; Živković, Predrag; Rogan, Jelena; Pavlović, Vladimir B.

(Basel : MDPI, 2023)

TY  - JOUR
AU  - Janićijević, Aleksandra
AU  - Filipović, Suzana
AU  - Sknepnek, Aleksandra
AU  - Vlahović, Branislav
AU  - Đorđević, Nenad
AU  - Kovacević, Danijela
AU  - Mirković, Miljana
AU  - Petronijević, Ivan
AU  - Živković, Predrag
AU  - Rogan, Jelena
AU  - Pavlović, Vladimir B.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15363
AB  - In the search for environmentally friendly materials with a wide range of properties, polymer composites have emerged as a promising alternative due to their multifunctional properties. This study focuses on the synthesis of composite materials consisting of four components: bacterial nanocellulose (BNC) modified with magnetic Fe3O4, and a mixture of BaTiO3 (BT) and polyvinylidene fluoride (PVDF). The BT powder was mechanically activated prior to mixing with PVDF. The influence of BT mechanical activation and BNC with magnetic particles on the PVDF matrix was investigated. The obtained composite films’ structural characteristics, morphology, and dielectric properties are presented. This research provides insights into the relationship between mechanical activation of the filler and structural and dielectric properties in the PVDF/BT/BNC/Fe3O4 system, creating the way for the development of materials with a wide range of diverse properties that support the concept of green technologies.
PB  - Basel : MDPI
T2  - Polymers
T1  - Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite
SP  - 4080
VL  - 15
IS  - 20
DO  - 10.3390/polym15204080
UR  - https://hdl.handle.net/21.15107/rcub_dais_15363
ER  - 
@article{
author = "Janićijević, Aleksandra and Filipović, Suzana and Sknepnek, Aleksandra and Vlahović, Branislav and Đorđević, Nenad and Kovacević, Danijela and Mirković, Miljana and Petronijević, Ivan and Živković, Predrag and Rogan, Jelena and Pavlović, Vladimir B.",
year = "2023",
abstract = "In the search for environmentally friendly materials with a wide range of properties, polymer composites have emerged as a promising alternative due to their multifunctional properties. This study focuses on the synthesis of composite materials consisting of four components: bacterial nanocellulose (BNC) modified with magnetic Fe3O4, and a mixture of BaTiO3 (BT) and polyvinylidene fluoride (PVDF). The BT powder was mechanically activated prior to mixing with PVDF. The influence of BT mechanical activation and BNC with magnetic particles on the PVDF matrix was investigated. The obtained composite films’ structural characteristics, morphology, and dielectric properties are presented. This research provides insights into the relationship between mechanical activation of the filler and structural and dielectric properties in the PVDF/BT/BNC/Fe3O4 system, creating the way for the development of materials with a wide range of diverse properties that support the concept of green technologies.",
publisher = "Basel : MDPI",
journal = "Polymers",
title = "Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite",
pages = "4080",
volume = "15",
number = "20",
doi = "10.3390/polym15204080",
url = "https://hdl.handle.net/21.15107/rcub_dais_15363"
}
Janićijević, A., Filipović, S., Sknepnek, A., Vlahović, B., Đorđević, N., Kovacević, D., Mirković, M., Petronijević, I., Živković, P., Rogan, J.,& Pavlović, V. B.. (2023). Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite. in Polymers
Basel : MDPI., 15(20), 4080.
https://doi.org/10.3390/polym15204080
https://hdl.handle.net/21.15107/rcub_dais_15363
Janićijević A, Filipović S, Sknepnek A, Vlahović B, Đorđević N, Kovacević D, Mirković M, Petronijević I, Živković P, Rogan J, Pavlović VB. Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite. in Polymers. 2023;15(20):4080.
doi:10.3390/polym15204080
https://hdl.handle.net/21.15107/rcub_dais_15363 .
Janićijević, Aleksandra, Filipović, Suzana, Sknepnek, Aleksandra, Vlahović, Branislav, Đorđević, Nenad, Kovacević, Danijela, Mirković, Miljana, Petronijević, Ivan, Živković, Predrag, Rogan, Jelena, Pavlović, Vladimir B., "Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite" in Polymers, 15, no. 20 (2023):4080,
https://doi.org/10.3390/polym15204080 .,
https://hdl.handle.net/21.15107/rcub_dais_15363 .

The Catalytic Effect of Vanadium on Sorption Properties of MgH2-Based Nanocomposites Obtained Using Low Milling Time

Sekulić, Zorana; Grbović Novaković, Jasmina; Babić, Bojana; Prvulović, Milica; Milanović, Igor; Novaković, Nikola; Rajnović, Dragan; Filipović, Nenad; Asanović, Vanja

(2023)

TY  - JOUR
AU  - Sekulić, Zorana
AU  - Grbović Novaković, Jasmina
AU  - Babić, Bojana
AU  - Prvulović, Milica
AU  - Milanović, Igor
AU  - Novaković, Nikola
AU  - Rajnović, Dragan
AU  - Filipović, Nenad
AU  - Asanović, Vanja
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15140
AB  - The effects of catalysis using vanadium as an additive (2 and 5 wt.%) in a high-energy ball mill on composite desorption properties were examined. The influence of microstructure on the dehydration temperature and hydrogen desorption kinetics was monitored. Morphological and microstructural studies of the synthesized sample were performed by X-ray diffraction (XRD), laser particle size distribution (PSD), and scanning electron microscopy (SEM) methods, while differential scanning calorimetry (DSC) determined thermal properties. To further access amorph species in the milling blend, the absorption spectra were obtained by FTIR-ATR analysis (Fourier transform infrared spectroscopy attenuated total reflection). The results show lower apparent activation energy (Eapp) and H2 desorption temperature are obtained for milling bland with 5 wt.% added vanadium. The best explanation of hydrogen desorption reaction shows the Avrami-Erofeev model for parameter n = 4. Since the obtained value of apparent activation energy is close to the Mg-H bond-breaking energy, one can conclude that breaking this bond would be the rate-limiting step of the process.
T2  - Materials
T1  - The Catalytic Effect of Vanadium on Sorption Properties of MgH2-Based Nanocomposites Obtained Using Low Milling Time
SP  - 5480
VL  - 16
IS  - 15
DO  - 10.3390/ma16155480
UR  - https://hdl.handle.net/21.15107/rcub_dais_15140
ER  - 
@article{
author = "Sekulić, Zorana and Grbović Novaković, Jasmina and Babić, Bojana and Prvulović, Milica and Milanović, Igor and Novaković, Nikola and Rajnović, Dragan and Filipović, Nenad and Asanović, Vanja",
year = "2023",
abstract = "The effects of catalysis using vanadium as an additive (2 and 5 wt.%) in a high-energy ball mill on composite desorption properties were examined. The influence of microstructure on the dehydration temperature and hydrogen desorption kinetics was monitored. Morphological and microstructural studies of the synthesized sample were performed by X-ray diffraction (XRD), laser particle size distribution (PSD), and scanning electron microscopy (SEM) methods, while differential scanning calorimetry (DSC) determined thermal properties. To further access amorph species in the milling blend, the absorption spectra were obtained by FTIR-ATR analysis (Fourier transform infrared spectroscopy attenuated total reflection). The results show lower apparent activation energy (Eapp) and H2 desorption temperature are obtained for milling bland with 5 wt.% added vanadium. The best explanation of hydrogen desorption reaction shows the Avrami-Erofeev model for parameter n = 4. Since the obtained value of apparent activation energy is close to the Mg-H bond-breaking energy, one can conclude that breaking this bond would be the rate-limiting step of the process.",
journal = "Materials",
title = "The Catalytic Effect of Vanadium on Sorption Properties of MgH2-Based Nanocomposites Obtained Using Low Milling Time",
pages = "5480",
volume = "16",
number = "15",
doi = "10.3390/ma16155480",
url = "https://hdl.handle.net/21.15107/rcub_dais_15140"
}
Sekulić, Z., Grbović Novaković, J., Babić, B., Prvulović, M., Milanović, I., Novaković, N., Rajnović, D., Filipović, N.,& Asanović, V.. (2023). The Catalytic Effect of Vanadium on Sorption Properties of MgH2-Based Nanocomposites Obtained Using Low Milling Time. in Materials, 16(15), 5480.
https://doi.org/10.3390/ma16155480
https://hdl.handle.net/21.15107/rcub_dais_15140
Sekulić Z, Grbović Novaković J, Babić B, Prvulović M, Milanović I, Novaković N, Rajnović D, Filipović N, Asanović V. The Catalytic Effect of Vanadium on Sorption Properties of MgH2-Based Nanocomposites Obtained Using Low Milling Time. in Materials. 2023;16(15):5480.
doi:10.3390/ma16155480
https://hdl.handle.net/21.15107/rcub_dais_15140 .
Sekulić, Zorana, Grbović Novaković, Jasmina, Babić, Bojana, Prvulović, Milica, Milanović, Igor, Novaković, Nikola, Rajnović, Dragan, Filipović, Nenad, Asanović, Vanja, "The Catalytic Effect of Vanadium on Sorption Properties of MgH2-Based Nanocomposites Obtained Using Low Milling Time" in Materials, 16, no. 15 (2023):5480,
https://doi.org/10.3390/ma16155480 .,
https://hdl.handle.net/21.15107/rcub_dais_15140 .

Structure-dependent optical properties of Au/Ag irradiated TiN thin films

Popović, Maja; Novaković, Mirjana; Vaňa, Dušan; Ronning, Carsten; Jugović, Dragana; Rajić, Vladimir; Noga, Pavol

(Elsevier BV, 2023)

TY  - JOUR
AU  - Popović, Maja
AU  - Novaković, Mirjana
AU  - Vaňa, Dušan
AU  - Ronning, Carsten
AU  - Jugović, Dragana
AU  - Rajić, Vladimir
AU  - Noga, Pavol
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14289
AB  - Titanium nitride (TiN) is an attractive alternative for modern and future photonic applications, as its optical properties can be engineered over a wide spectral range. In this study, we have used sequential implantation of gold and silver ions with varying ion fluence, as well as subsequent annealing, in order to modify the optical and plasmonic properties of TiN thin films and correlated this to their structural properties. Our investigations show that the columnar structure of the TiN films is partially destroyed upon implantation, but metallic Au and Ag nanoparticles are formed. The irradiation further induces a reduction of the lattice constant as well as changes the TiN stoichiometry and grain size. From the optical point of view, the implanted films possess less metallicity with increasing Ag fluence and losses several times lower than the as-deposited film, which can be correlated with the deficiency of nitrogen and additional defects. Subsequent annealing partially recovered the destroyed columnar structure, and the films become more metallic where the optical losses are much smaller in comparison to the as-implanted situation, being comparable to those of pure Au and Ag. In this way, by varying the implantation fluence of silver ions properly while keeping the gold fluence constant, we were able to optimize experimental parameters in such a way to ensure the formation of TiN with desirable optical performances.
PB  - Elsevier BV
T2  - Optical Materials
T1  - Structure-dependent optical properties of Au/Ag irradiated TiN thin films
SP  - 113684
VL  - 138
DO  - 10.1016/j.optmat.2023.113684
UR  - https://hdl.handle.net/21.15107/rcub_dais_14289
ER  - 
@article{
author = "Popović, Maja and Novaković, Mirjana and Vaňa, Dušan and Ronning, Carsten and Jugović, Dragana and Rajić, Vladimir and Noga, Pavol",
year = "2023",
abstract = "Titanium nitride (TiN) is an attractive alternative for modern and future photonic applications, as its optical properties can be engineered over a wide spectral range. In this study, we have used sequential implantation of gold and silver ions with varying ion fluence, as well as subsequent annealing, in order to modify the optical and plasmonic properties of TiN thin films and correlated this to their structural properties. Our investigations show that the columnar structure of the TiN films is partially destroyed upon implantation, but metallic Au and Ag nanoparticles are formed. The irradiation further induces a reduction of the lattice constant as well as changes the TiN stoichiometry and grain size. From the optical point of view, the implanted films possess less metallicity with increasing Ag fluence and losses several times lower than the as-deposited film, which can be correlated with the deficiency of nitrogen and additional defects. Subsequent annealing partially recovered the destroyed columnar structure, and the films become more metallic where the optical losses are much smaller in comparison to the as-implanted situation, being comparable to those of pure Au and Ag. In this way, by varying the implantation fluence of silver ions properly while keeping the gold fluence constant, we were able to optimize experimental parameters in such a way to ensure the formation of TiN with desirable optical performances.",
publisher = "Elsevier BV",
journal = "Optical Materials",
title = "Structure-dependent optical properties of Au/Ag irradiated TiN thin films",
pages = "113684",
volume = "138",
doi = "10.1016/j.optmat.2023.113684",
url = "https://hdl.handle.net/21.15107/rcub_dais_14289"
}
Popović, M., Novaković, M., Vaňa, D., Ronning, C., Jugović, D., Rajić, V.,& Noga, P.. (2023). Structure-dependent optical properties of Au/Ag irradiated TiN thin films. in Optical Materials
Elsevier BV., 138, 113684.
https://doi.org/10.1016/j.optmat.2023.113684
https://hdl.handle.net/21.15107/rcub_dais_14289
Popović M, Novaković M, Vaňa D, Ronning C, Jugović D, Rajić V, Noga P. Structure-dependent optical properties of Au/Ag irradiated TiN thin films. in Optical Materials. 2023;138:113684.
doi:10.1016/j.optmat.2023.113684
https://hdl.handle.net/21.15107/rcub_dais_14289 .
Popović, Maja, Novaković, Mirjana, Vaňa, Dušan, Ronning, Carsten, Jugović, Dragana, Rajić, Vladimir, Noga, Pavol, "Structure-dependent optical properties of Au/Ag irradiated TiN thin films" in Optical Materials, 138 (2023):113684,
https://doi.org/10.1016/j.optmat.2023.113684 .,
https://hdl.handle.net/21.15107/rcub_dais_14289 .
2
2

Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion

Stamenković, Tijana; Radmilović, Nadežda; Prekajski-Đorđević, Marija D.; Rabasović, Mihailo; Dinić, Ivana; Tomić, Miloš; Lojpur, Vesna; Mančić, Lidija

(2023)

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Radmilović, Nadežda
AU  - Prekajski-Đorđević, Marija D.
AU  - Rabasović, Mihailo
AU  - Dinić, Ivana
AU  - Tomić, Miloš
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/13491
AB  - Nanopowders of up-conversion SrGd2O4 orthorhombic (Pnma) phase co-doped with different Yb3+ (1, 2.5 and 5 at%) and constant Er3+ (0.5 at%) ions were successfully prepared via sol-gel assisted combustion. Rietveld refinement indicated unit cell lattice parameters increase with Yb3+ and Er3+ ions doping. Scanning transmission electron microscopy with corresponding energy-dispersive X-ray spectroscopy revealed that obtained powders are composed of agglomerated nanoparticles that have a uniform distribution of all constituting elements. Photoluminescence measurements implied intensification of the up-conversion (UC) emission in the visible part of spectrum with the increase of Yb3+ content, which is followed by a significant change in the green to red ratio. Two-photon UC processes are established as a result of Er3+ f-f electronic transitions: green emission at 523 and 551 nm (2H11/2, 4S3/2 → 4I15/2) as well as a red emission at 661 nm (4F9/2 → 4I15/2). The highest value of absolute quantum yield of 0.055% is determined for SrGd2O4 nanoparticles doped with 0.5 at% of Er3+ and co-doped with 5 at% of Yb3+ (λexc = 976 nm, power density 200 W/cm2).
T2  - Journal of Luminescence
T1  - Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion
SP  - 119491
VL  - 253
DO  - 10.1016/j.jlumin.2022.119491
UR  - https://hdl.handle.net/21.15107/rcub_dais_13491
ER  - 
@article{
author = "Stamenković, Tijana and Radmilović, Nadežda and Prekajski-Đorđević, Marija D. and Rabasović, Mihailo and Dinić, Ivana and Tomić, Miloš and Lojpur, Vesna and Mančić, Lidija",
year = "2023",
abstract = "Nanopowders of up-conversion SrGd2O4 orthorhombic (Pnma) phase co-doped with different Yb3+ (1, 2.5 and 5 at%) and constant Er3+ (0.5 at%) ions were successfully prepared via sol-gel assisted combustion. Rietveld refinement indicated unit cell lattice parameters increase with Yb3+ and Er3+ ions doping. Scanning transmission electron microscopy with corresponding energy-dispersive X-ray spectroscopy revealed that obtained powders are composed of agglomerated nanoparticles that have a uniform distribution of all constituting elements. Photoluminescence measurements implied intensification of the up-conversion (UC) emission in the visible part of spectrum with the increase of Yb3+ content, which is followed by a significant change in the green to red ratio. Two-photon UC processes are established as a result of Er3+ f-f electronic transitions: green emission at 523 and 551 nm (2H11/2, 4S3/2 → 4I15/2) as well as a red emission at 661 nm (4F9/2 → 4I15/2). The highest value of absolute quantum yield of 0.055% is determined for SrGd2O4 nanoparticles doped with 0.5 at% of Er3+ and co-doped with 5 at% of Yb3+ (λexc = 976 nm, power density 200 W/cm2).",
journal = "Journal of Luminescence",
title = "Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion",
pages = "119491",
volume = "253",
doi = "10.1016/j.jlumin.2022.119491",
url = "https://hdl.handle.net/21.15107/rcub_dais_13491"
}
Stamenković, T., Radmilović, N., Prekajski-Đorđević, M. D., Rabasović, M., Dinić, I., Tomić, M., Lojpur, V.,& Mančić, L.. (2023). Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion. in Journal of Luminescence, 253, 119491.
https://doi.org/10.1016/j.jlumin.2022.119491
https://hdl.handle.net/21.15107/rcub_dais_13491
Stamenković T, Radmilović N, Prekajski-Đorđević MD, Rabasović M, Dinić I, Tomić M, Lojpur V, Mančić L. Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion. in Journal of Luminescence. 2023;253:119491.
doi:10.1016/j.jlumin.2022.119491
https://hdl.handle.net/21.15107/rcub_dais_13491 .
Stamenković, Tijana, Radmilović, Nadežda, Prekajski-Đorđević, Marija D., Rabasović, Mihailo, Dinić, Ivana, Tomić, Miloš, Lojpur, Vesna, Mančić, Lidija, "Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion" in Journal of Luminescence, 253 (2023):119491,
https://doi.org/10.1016/j.jlumin.2022.119491 .,
https://hdl.handle.net/21.15107/rcub_dais_13491 .
6
4

Effect of mechanical activation on carbothermal synthesis and densification of ZrC

Obradović, Nina; Feng, Lun; Filipović, Suzana; Mirković, Miljana; Kosanović, Darko; Rogan, Jelena; Fahrenholtz, William G.

(Elsevier BV, 2023)

TY  - JOUR
AU  - Obradović, Nina
AU  - Feng, Lun
AU  - Filipović, Suzana
AU  - Mirković, Miljana
AU  - Kosanović, Darko
AU  - Rogan, Jelena
AU  - Fahrenholtz, William G.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14890
AB  - Zirconium carbide ceramics were prepared by carbothermal reduction of ZrO2 and C that were mixed by high-energy ball milling. Powders were milled for times from 0 to 120 min in air. As milling time increased, the surface area of the powders increased, indicating significant particle size reduction. Milled powders were reacted at 1600 °C and then densified by spark plasma sintering at 2000 °C, which was sufficient to convert the starting powders to zirconium carbide. Unmilled powders did not reach full density. Milled powders reached full density, but ZrO2 impurities were found for specimens prepared from powders milled for 60 and 120 min. Microstructure analysis showed that grain size was less than 2 µm for ceramics produced from powder milled for 15 min. Based on densification onset temperature and impurity levels, a milling time of 15 min gives the best balance of particle size reduction to promote densification while minimizing impurity levels.
PB  - Elsevier BV
T2  - Journal of the European Ceramic Society
T1  - Effect of mechanical activation on carbothermal synthesis and densification of ZrC
SP  - 7306
EP  - 7313
DO  - 10.1016/j.jeurceramsoc.2023.08.007
UR  - https://hdl.handle.net/21.15107/rcub_dais_14890
ER  - 
@article{
author = "Obradović, Nina and Feng, Lun and Filipović, Suzana and Mirković, Miljana and Kosanović, Darko and Rogan, Jelena and Fahrenholtz, William G.",
year = "2023",
abstract = "Zirconium carbide ceramics were prepared by carbothermal reduction of ZrO2 and C that were mixed by high-energy ball milling. Powders were milled for times from 0 to 120 min in air. As milling time increased, the surface area of the powders increased, indicating significant particle size reduction. Milled powders were reacted at 1600 °C and then densified by spark plasma sintering at 2000 °C, which was sufficient to convert the starting powders to zirconium carbide. Unmilled powders did not reach full density. Milled powders reached full density, but ZrO2 impurities were found for specimens prepared from powders milled for 60 and 120 min. Microstructure analysis showed that grain size was less than 2 µm for ceramics produced from powder milled for 15 min. Based on densification onset temperature and impurity levels, a milling time of 15 min gives the best balance of particle size reduction to promote densification while minimizing impurity levels.",
publisher = "Elsevier BV",
journal = "Journal of the European Ceramic Society",
title = "Effect of mechanical activation on carbothermal synthesis and densification of ZrC",
pages = "7306-7313",
doi = "10.1016/j.jeurceramsoc.2023.08.007",
url = "https://hdl.handle.net/21.15107/rcub_dais_14890"
}
Obradović, N., Feng, L., Filipović, S., Mirković, M., Kosanović, D., Rogan, J.,& Fahrenholtz, W. G.. (2023). Effect of mechanical activation on carbothermal synthesis and densification of ZrC. in Journal of the European Ceramic Society
Elsevier BV., 7306-7313.
https://doi.org/10.1016/j.jeurceramsoc.2023.08.007
https://hdl.handle.net/21.15107/rcub_dais_14890
Obradović N, Feng L, Filipović S, Mirković M, Kosanović D, Rogan J, Fahrenholtz WG. Effect of mechanical activation on carbothermal synthesis and densification of ZrC. in Journal of the European Ceramic Society. 2023;:7306-7313.
doi:10.1016/j.jeurceramsoc.2023.08.007
https://hdl.handle.net/21.15107/rcub_dais_14890 .
Obradović, Nina, Feng, Lun, Filipović, Suzana, Mirković, Miljana, Kosanović, Darko, Rogan, Jelena, Fahrenholtz, William G., "Effect of mechanical activation on carbothermal synthesis and densification of ZrC" in Journal of the European Ceramic Society (2023):7306-7313,
https://doi.org/10.1016/j.jeurceramsoc.2023.08.007 .,
https://hdl.handle.net/21.15107/rcub_dais_14890 .
1
1

Prolonged zaleplon treatment enhance GABAergic and glutamatergic signaling in the hippocampus of male Wistar rats

Martinović, Jelena; Zarić Kontić, Marina; Guševac Stojanović, Ivana; Mitrović, Nataša; Grković, Ivana; Stojanović, Zoran; Drakulić, Dunja; Samardžić, Janko

(Belgrade : Serbian Neuroscience Society, 2023)

TY  - CONF
AU  - Martinović, Jelena
AU  - Zarić Kontić, Marina
AU  - Guševac Stojanović, Ivana
AU  - Mitrović, Nataša
AU  - Grković, Ivana
AU  - Stojanović, Zoran
AU  - Drakulić, Dunja
AU  - Samardžić, Janko
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14565
AB  - Zaleplon, a member of Z-drugs, is a pyrazolopyrimidine hypnotic with sedative, anxiolytic, anticonvulsant and muscle relaxant properties. Zaleplon is approved for the short-term management of insomnia since acting as positive γ-aminobutyric acid (GABA) receptor allosteric modulator increases efficacy of inhibition on brain excitability. Importantly, for the proper functioning of the brain a balance between inhibitory (i.e., GABAergic) and excitatory (i.e., glutamatergic) system must be accomplished. This may be fulfilled by control of presynaptic elements (synthesis or degradation of glutamate and GABA neurotransmitters, their compartmentation, releasing and recycling) and regulation of expression and function of glutamate and GABA receptors. Hence, we aimed to investigate effects of prolonged zaleplon treatment on the expression of proteins involved in the gabaergic and glutamatergic signalization in the hippocampus of adult male Wistar rats. Five-day intraperitoneal administration increased level of components of GABAergic signalization (glutamate decarboxylase 67-GAD67, vesicular GABA transporter-VGAT and α1 subunit of GABA receptor-GABAAα1). This was accompanied by increased level of glutamatergic components (vesicular glutamate transporter 1-vGlut1 and subunits of glutamate N-Methyl-d-aspartate receptor-NMDAR, namely NR1, NR2A, NR2B), which clearly indicate maintenance of balance between main inhibitory and excitatory neurotransmitters. Given the importance of equilibrium of these systems for neuronal excitability, synaptic plasticity and cognitive functions, as well as its involvement in the mood, feeding behavior, reproductive functions, pain sensitivity, aging, etc., the current and prospective pharmaceuticals increasingly rely on GABA/glutamate balance
PB  - Belgrade : Serbian Neuroscience Society
C3  - 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade
T1  - Prolonged zaleplon treatment enhance GABAergic and glutamatergic signaling in the hippocampus of male Wistar rats
SP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11047
ER  - 
@conference{
author = "Martinović, Jelena and Zarić Kontić, Marina and Guševac Stojanović, Ivana and Mitrović, Nataša and Grković, Ivana and Stojanović, Zoran and Drakulić, Dunja and Samardžić, Janko",
year = "2023",
abstract = "Zaleplon, a member of Z-drugs, is a pyrazolopyrimidine hypnotic with sedative, anxiolytic, anticonvulsant and muscle relaxant properties. Zaleplon is approved for the short-term management of insomnia since acting as positive γ-aminobutyric acid (GABA) receptor allosteric modulator increases efficacy of inhibition on brain excitability. Importantly, for the proper functioning of the brain a balance between inhibitory (i.e., GABAergic) and excitatory (i.e., glutamatergic) system must be accomplished. This may be fulfilled by control of presynaptic elements (synthesis or degradation of glutamate and GABA neurotransmitters, their compartmentation, releasing and recycling) and regulation of expression and function of glutamate and GABA receptors. Hence, we aimed to investigate effects of prolonged zaleplon treatment on the expression of proteins involved in the gabaergic and glutamatergic signalization in the hippocampus of adult male Wistar rats. Five-day intraperitoneal administration increased level of components of GABAergic signalization (glutamate decarboxylase 67-GAD67, vesicular GABA transporter-VGAT and α1 subunit of GABA receptor-GABAAα1). This was accompanied by increased level of glutamatergic components (vesicular glutamate transporter 1-vGlut1 and subunits of glutamate N-Methyl-d-aspartate receptor-NMDAR, namely NR1, NR2A, NR2B), which clearly indicate maintenance of balance between main inhibitory and excitatory neurotransmitters. Given the importance of equilibrium of these systems for neuronal excitability, synaptic plasticity and cognitive functions, as well as its involvement in the mood, feeding behavior, reproductive functions, pain sensitivity, aging, etc., the current and prospective pharmaceuticals increasingly rely on GABA/glutamate balance",
publisher = "Belgrade : Serbian Neuroscience Society",
journal = "8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade",
title = "Prolonged zaleplon treatment enhance GABAergic and glutamatergic signaling in the hippocampus of male Wistar rats",
pages = "59",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11047"
}
Martinović, J., Zarić Kontić, M., Guševac Stojanović, I., Mitrović, N., Grković, I., Stojanović, Z., Drakulić, D.,& Samardžić, J.. (2023). Prolonged zaleplon treatment enhance GABAergic and glutamatergic signaling in the hippocampus of male Wistar rats. in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade
Belgrade : Serbian Neuroscience Society., 59.
https://hdl.handle.net/21.15107/rcub_vinar_11047
Martinović J, Zarić Kontić M, Guševac Stojanović I, Mitrović N, Grković I, Stojanović Z, Drakulić D, Samardžić J. Prolonged zaleplon treatment enhance GABAergic and glutamatergic signaling in the hippocampus of male Wistar rats. in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade. 2023;:59.
https://hdl.handle.net/21.15107/rcub_vinar_11047 .
Martinović, Jelena, Zarić Kontić, Marina, Guševac Stojanović, Ivana, Mitrović, Nataša, Grković, Ivana, Stojanović, Zoran, Drakulić, Dunja, Samardžić, Janko, "Prolonged zaleplon treatment enhance GABAergic and glutamatergic signaling in the hippocampus of male Wistar rats" in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade (2023):59,
https://hdl.handle.net/21.15107/rcub_vinar_11047 .

Progesterone treatment preserves cortical pro-/antioxidant balance, DNA integrity and cell morphology in rat cerebral hypoperfusion model

Guševac Stojanović, Ivana; Dragić, Milorad; Zarić Kontić, Marina; Martinović, Jelena; Mitrović, Nataša; Stojanović, Zoran; Veljković, Filip; Martinović, D.; Grković, Ivana; Drakulić, Dunja

(Belgrade : Serbian Neuroscience Society, 2023)

TY  - CONF
AU  - Guševac Stojanović, Ivana
AU  - Dragić, Milorad
AU  - Zarić Kontić, Marina
AU  - Martinović, Jelena
AU  - Mitrović, Nataša
AU  - Stojanović, Zoran
AU  - Veljković, Filip
AU  - Martinović, D.
AU  - Grković, Ivana
AU  - Drakulić, Dunja
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14702
AB  - Cerebral hypoperfusion (CH) is recognised as a contributor to various impairments characteristic for elderly population and patients with vascular dementia and Alzheimer’s disease. CH-induced brain damage is linked with oxidative stress in the cells that can cause DNA fragmentation and cell death, reflected through a change in cells’ morphology. Our study investigated the beneficial effects of progesterone (P4), a hormone with neuroprotective properties, against CH-induced oxidative stress and neurodegenerative pathologies in rat prefrontal cortex (PFC). For the purpose of the experiment, adult male Wistar rats were dived into groups: (I) animals subjected to permanent bilateral occlusion of common carotid arteries (2VO) treated with vehicle (commercial flax oil, 1 mg/kg/day), (II) animals subjected to 2VO treated with P4 dissolved in vehicle (1.7 mg/kg/day) and (III) animals subjected to sham operation treated with vehicle. Animals were sacrificed after 7 subcutaneous treatments. Levels of pro-/antioxidant balance (PAB) and DNA fragmentation along with cell morphology were estimated by well-defined methods. The results revealed that P4 administration moderated CH-induced impairments in PFC, not only by decreasing PAB level and diminishing DNA fragmentation, but also preserving the cell morphology reflected through clearly defined cell bodies, with round nuclei, prominent nucleolus and visible Nissl bodies in layer III. Obtained results point out that P4 is able to attenuate CH-induced pro-oxidant state and subsequent changes in PFC. This hormone holds promise as an effective agent for the CH treatment, still, its specific actions remain to be discovered.
PB  - Belgrade : Serbian Neuroscience Society
C3  - 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade
T1  - Progesterone treatment preserves cortical pro-/antioxidant balance, DNA integrity and cell morphology in rat cerebral hypoperfusion model
SP  - 117
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11058
ER  - 
@conference{
author = "Guševac Stojanović, Ivana and Dragić, Milorad and Zarić Kontić, Marina and Martinović, Jelena and Mitrović, Nataša and Stojanović, Zoran and Veljković, Filip and Martinović, D. and Grković, Ivana and Drakulić, Dunja",
year = "2023",
abstract = "Cerebral hypoperfusion (CH) is recognised as a contributor to various impairments characteristic for elderly population and patients with vascular dementia and Alzheimer’s disease. CH-induced brain damage is linked with oxidative stress in the cells that can cause DNA fragmentation and cell death, reflected through a change in cells’ morphology. Our study investigated the beneficial effects of progesterone (P4), a hormone with neuroprotective properties, against CH-induced oxidative stress and neurodegenerative pathologies in rat prefrontal cortex (PFC). For the purpose of the experiment, adult male Wistar rats were dived into groups: (I) animals subjected to permanent bilateral occlusion of common carotid arteries (2VO) treated with vehicle (commercial flax oil, 1 mg/kg/day), (II) animals subjected to 2VO treated with P4 dissolved in vehicle (1.7 mg/kg/day) and (III) animals subjected to sham operation treated with vehicle. Animals were sacrificed after 7 subcutaneous treatments. Levels of pro-/antioxidant balance (PAB) and DNA fragmentation along with cell morphology were estimated by well-defined methods. The results revealed that P4 administration moderated CH-induced impairments in PFC, not only by decreasing PAB level and diminishing DNA fragmentation, but also preserving the cell morphology reflected through clearly defined cell bodies, with round nuclei, prominent nucleolus and visible Nissl bodies in layer III. Obtained results point out that P4 is able to attenuate CH-induced pro-oxidant state and subsequent changes in PFC. This hormone holds promise as an effective agent for the CH treatment, still, its specific actions remain to be discovered.",
publisher = "Belgrade : Serbian Neuroscience Society",
journal = "8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade",
title = "Progesterone treatment preserves cortical pro-/antioxidant balance, DNA integrity and cell morphology in rat cerebral hypoperfusion model",
pages = "117",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11058"
}
Guševac Stojanović, I., Dragić, M., Zarić Kontić, M., Martinović, J., Mitrović, N., Stojanović, Z., Veljković, F., Martinović, D., Grković, I.,& Drakulić, D.. (2023). Progesterone treatment preserves cortical pro-/antioxidant balance, DNA integrity and cell morphology in rat cerebral hypoperfusion model. in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade
Belgrade : Serbian Neuroscience Society., 117.
https://hdl.handle.net/21.15107/rcub_vinar_11058
Guševac Stojanović I, Dragić M, Zarić Kontić M, Martinović J, Mitrović N, Stojanović Z, Veljković F, Martinović D, Grković I, Drakulić D. Progesterone treatment preserves cortical pro-/antioxidant balance, DNA integrity and cell morphology in rat cerebral hypoperfusion model. in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade. 2023;:117.
https://hdl.handle.net/21.15107/rcub_vinar_11058 .
Guševac Stojanović, Ivana, Dragić, Milorad, Zarić Kontić, Marina, Martinović, Jelena, Mitrović, Nataša, Stojanović, Zoran, Veljković, Filip, Martinović, D., Grković, Ivana, Drakulić, Dunja, "Progesterone treatment preserves cortical pro-/antioxidant balance, DNA integrity and cell morphology in rat cerebral hypoperfusion model" in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade (2023):117,
https://hdl.handle.net/21.15107/rcub_vinar_11058 .

Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles

Stamenković, Tijana; Radmilović, Nadežda; Dinić, Ivana; Vuković, Marina; Barudžija, Tanja; Čebela, Maria; Lojpur, Vesna

(Belgrade : Institut za multidisciplinarna istraživanja, 2023)

TY  - CONF
AU  - Stamenković, Tijana
AU  - Radmilović, Nadežda
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Barudžija, Tanja
AU  - Čebela, Maria
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14663
AB  - In this investigation, samples of SrGd2O4 doped with different Yb3+ (2, 4, 6 at.%) ions and constant Ho3+ (1 at.%) and Bi3+ (2 at.%) concentrations were prepared. The sol-gel method with glycine as a fuel and citric acid as a chelator was chosen for sample preparation. All samples were heated in the furnace for 1.5 h at 500 °C and then thermally treated for 2.5 h at 1000 °C. The pure orthorhombic lattice of SrGd2O4, space group Pnma, was revealed by X-ray diffraction (XRD) (JCPDS Card No.:01-072-6387). Transmission electron microscopy (TEM) discovered agglomerated clusters of spherical particles measuring around 150 nm in size. Including Bi3+ ions into the structure influenced the morphology of the sample showing fine packing of pyramidal-shaped nanoparticles. The uniform distribution of constitutive elements in the samples was confirmed by energy dispersive spectroscopy (EDS). Up-conversion emission properties were evaluated from photoluminescent emission spectra and intensity dependence on excitation power after excitation at 976 nm. Dominant green (550 nm), red (671 nm), and infrared (758 nm) 5F4, 5S2 → 5I8, 5F5 → 5I8, 5F4, 5S2 → 5I7 transition emissions, respectively, are detected in all samples. The sample co-doped with Bi3+ showed the most intense photoluminescent emission.
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles
UR  - https://hdl.handle.net/21.15107/rcub_dais_14663
ER  - 
@conference{
author = "Stamenković, Tijana and Radmilović, Nadežda and Dinić, Ivana and Vuković, Marina and Barudžija, Tanja and Čebela, Maria and Lojpur, Vesna",
year = "2023",
abstract = "In this investigation, samples of SrGd2O4 doped with different Yb3+ (2, 4, 6 at.%) ions and constant Ho3+ (1 at.%) and Bi3+ (2 at.%) concentrations were prepared. The sol-gel method with glycine as a fuel and citric acid as a chelator was chosen for sample preparation. All samples were heated in the furnace for 1.5 h at 500 °C and then thermally treated for 2.5 h at 1000 °C. The pure orthorhombic lattice of SrGd2O4, space group Pnma, was revealed by X-ray diffraction (XRD) (JCPDS Card No.:01-072-6387). Transmission electron microscopy (TEM) discovered agglomerated clusters of spherical particles measuring around 150 nm in size. Including Bi3+ ions into the structure influenced the morphology of the sample showing fine packing of pyramidal-shaped nanoparticles. The uniform distribution of constitutive elements in the samples was confirmed by energy dispersive spectroscopy (EDS). Up-conversion emission properties were evaluated from photoluminescent emission spectra and intensity dependence on excitation power after excitation at 976 nm. Dominant green (550 nm), red (671 nm), and infrared (758 nm) 5F4, 5S2 → 5I8, 5F5 → 5I8, 5F4, 5S2 → 5I7 transition emissions, respectively, are detected in all samples. The sample co-doped with Bi3+ showed the most intense photoluminescent emission.",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles",
url = "https://hdl.handle.net/21.15107/rcub_dais_14663"
}
Stamenković, T., Radmilović, N., Dinić, I., Vuković, M., Barudžija, T., Čebela, M.,& Lojpur, V.. (2023). Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja..
https://hdl.handle.net/21.15107/rcub_dais_14663
Stamenković T, Radmilović N, Dinić I, Vuković M, Barudžija T, Čebela M, Lojpur V. Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_14663 .
Stamenković, Tijana, Radmilović, Nadežda, Dinić, Ivana, Vuković, Marina, Barudžija, Tanja, Čebela, Maria, Lojpur, Vesna, "Enhancement of up-conversion luminescent characteristics of Yb3+/Ho3+ co-doped Bi3+ based SrGd2O4 nanoparticles" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_dais_14663 .

Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion

Stamenković, Tijana; Radmilović, Nadežda; Prekajski Đorđević, Marija D.; Rabasović, Mihailo; Dinić, Ivana; Tomić, Miloš; Lojpur, Vesna; Mančić, Lidija

(2023)

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Radmilović, Nadežda
AU  - Prekajski Đorđević, Marija D.
AU  - Rabasović, Mihailo
AU  - Dinić, Ivana
AU  - Tomić, Miloš
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14550
AB  - Nanopowders of up-conversion SrGd2O4 orthorhombic (Pnma) phase co-doped with different Yb3+ (1, 2.5 and 5 at%) and constant Er3+ (0.5 at%) ions were successfully prepared via sol-gel assisted combustion. Rietveld refinement indicated unit cell lattice parameters increase with Yb3+ and Er3+ ions doping. Scanning transmission electron microscopy with corresponding energy-dispersive X-ray spectroscopy revealed that obtained powders are composed of agglomerated nanoparticles that have a uniform distribution of all constituting elements. Photoluminescence measurements implied intensification of the up-conversion (UC) emission in the visible part of spectrum with the increase of Yb3+ content, which is followed by a significant change in the green to red ratio. Two-photon UC processes are established as a result of Er3+ f-f electronic transitions: green emission at 523 and 551 nm (2H11/2, 4S3/2 → 4I15/2) as well as a red emission at 661 nm (4F9/2 → 4I15/2). The highest value of absolute quantum yield of 0.055% is determined for SrGd2O4 nanoparticles doped with 0.5 at% of Er3+ and co-doped with 5 at% of Yb3+ (λexc = 976 nm, power density 200 W/cm2).
T2  - Journal of Luminescence
T1  - Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion
SP  - 119491
VL  - 253
DO  - 10.1016/j.jlumin.2022.119491
UR  - https://hdl.handle.net/21.15107/rcub_dais_13491
ER  - 
@article{
author = "Stamenković, Tijana and Radmilović, Nadežda and Prekajski Đorđević, Marija D. and Rabasović, Mihailo and Dinić, Ivana and Tomić, Miloš and Lojpur, Vesna and Mančić, Lidija",
year = "2023",
abstract = "Nanopowders of up-conversion SrGd2O4 orthorhombic (Pnma) phase co-doped with different Yb3+ (1, 2.5 and 5 at%) and constant Er3+ (0.5 at%) ions were successfully prepared via sol-gel assisted combustion. Rietveld refinement indicated unit cell lattice parameters increase with Yb3+ and Er3+ ions doping. Scanning transmission electron microscopy with corresponding energy-dispersive X-ray spectroscopy revealed that obtained powders are composed of agglomerated nanoparticles that have a uniform distribution of all constituting elements. Photoluminescence measurements implied intensification of the up-conversion (UC) emission in the visible part of spectrum with the increase of Yb3+ content, which is followed by a significant change in the green to red ratio. Two-photon UC processes are established as a result of Er3+ f-f electronic transitions: green emission at 523 and 551 nm (2H11/2, 4S3/2 → 4I15/2) as well as a red emission at 661 nm (4F9/2 → 4I15/2). The highest value of absolute quantum yield of 0.055% is determined for SrGd2O4 nanoparticles doped with 0.5 at% of Er3+ and co-doped with 5 at% of Yb3+ (λexc = 976 nm, power density 200 W/cm2).",
journal = "Journal of Luminescence",
title = "Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion",
pages = "119491",
volume = "253",
doi = "10.1016/j.jlumin.2022.119491",
url = "https://hdl.handle.net/21.15107/rcub_dais_13491"
}
Stamenković, T., Radmilović, N., Prekajski Đorđević, M. D., Rabasović, M., Dinić, I., Tomić, M., Lojpur, V.,& Mančić, L.. (2023). Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion. in Journal of Luminescence, 253, 119491.
https://doi.org/10.1016/j.jlumin.2022.119491
https://hdl.handle.net/21.15107/rcub_dais_13491
Stamenković T, Radmilović N, Prekajski Đorđević MD, Rabasović M, Dinić I, Tomić M, Lojpur V, Mančić L. Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion. in Journal of Luminescence. 2023;253:119491.
doi:10.1016/j.jlumin.2022.119491
https://hdl.handle.net/21.15107/rcub_dais_13491 .
Stamenković, Tijana, Radmilović, Nadežda, Prekajski Đorđević, Marija D., Rabasović, Mihailo, Dinić, Ivana, Tomić, Miloš, Lojpur, Vesna, Mančić, Lidija, "Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion" in Journal of Luminescence, 253 (2023):119491,
https://doi.org/10.1016/j.jlumin.2022.119491 .,
https://hdl.handle.net/21.15107/rcub_dais_13491 .
6
4

Synthesis, structure and magnetic properties of Fe2TiO5

Čebela, Maria; Reddy, Priyanka; Čakar, Uroš; Labus, Nebojša; Lojpur, Vesna; Dodevski, Vladimir; Rosić, Milena

(Belgrade : Institut za multidisciplinarna istraživanja, 2023)

TY  - CONF
AU  - Čebela, Maria
AU  - Reddy, Priyanka
AU  - Čakar, Uroš
AU  - Labus, Nebojša
AU  - Lojpur, Vesna
AU  - Dodevski, Vladimir
AU  - Rosić, Milena
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14660
AB  - Iron(III) titanates are attracting rapidly growing interest as very promising candidates for applications in solar energy and optoelectronics because they contain earth-rich elements. Potentially, Fe2TiO5 is a thermoelectric material. We used a Vibrating Sample Magnetometer and Superconducting Quantum Interferometer Device Magnetometer to study the magnetic properties of the pseudobrookite material Fe2TiO5. The material was synthesized by the sol-gel method. The structural parameters of the synthesized samples were investigated by X-ray analysis. The diffractogram was refined with the help of Rietveld refinement on FullProf Suite. Temperature-dependent ZFC and FC magnetization was measured on SQUID for lower temperature down to 2 K and on VSM for higher temperatures up to 1000 K. A transition was observed at 815 K with a separation between the ZFC and FC curves. Parallelly the bifurcation in the isothermal hysteresis measurements indicates that the system exhibits dominant canted AFM (or weak FM) with a small amount of spin glass. The small value of the moment was also pointing towards the canted AFM ordering. The size and morphology of the particles was determined using transmission electron microscopy (TEM) and scanning electron microscopy (SEM).
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Synthesis, structure and magnetic properties of Fe2TiO5
UR  - https://hdl.handle.net/21.15107/rcub_dais_14660
ER  - 
@conference{
author = "Čebela, Maria and Reddy, Priyanka and Čakar, Uroš and Labus, Nebojša and Lojpur, Vesna and Dodevski, Vladimir and Rosić, Milena",
year = "2023",
abstract = "Iron(III) titanates are attracting rapidly growing interest as very promising candidates for applications in solar energy and optoelectronics because they contain earth-rich elements. Potentially, Fe2TiO5 is a thermoelectric material. We used a Vibrating Sample Magnetometer and Superconducting Quantum Interferometer Device Magnetometer to study the magnetic properties of the pseudobrookite material Fe2TiO5. The material was synthesized by the sol-gel method. The structural parameters of the synthesized samples were investigated by X-ray analysis. The diffractogram was refined with the help of Rietveld refinement on FullProf Suite. Temperature-dependent ZFC and FC magnetization was measured on SQUID for lower temperature down to 2 K and on VSM for higher temperatures up to 1000 K. A transition was observed at 815 K with a separation between the ZFC and FC curves. Parallelly the bifurcation in the isothermal hysteresis measurements indicates that the system exhibits dominant canted AFM (or weak FM) with a small amount of spin glass. The small value of the moment was also pointing towards the canted AFM ordering. The size and morphology of the particles was determined using transmission electron microscopy (TEM) and scanning electron microscopy (SEM).",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Synthesis, structure and magnetic properties of Fe2TiO5",
url = "https://hdl.handle.net/21.15107/rcub_dais_14660"
}
Čebela, M., Reddy, P., Čakar, U., Labus, N., Lojpur, V., Dodevski, V.,& Rosić, M.. (2023). Synthesis, structure and magnetic properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja..
https://hdl.handle.net/21.15107/rcub_dais_14660
Čebela M, Reddy P, Čakar U, Labus N, Lojpur V, Dodevski V, Rosić M. Synthesis, structure and magnetic properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_14660 .
Čebela, Maria, Reddy, Priyanka, Čakar, Uroš, Labus, Nebojša, Lojpur, Vesna, Dodevski, Vladimir, Rosić, Milena, "Synthesis, structure and magnetic properties of Fe2TiO5" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_dais_14660 .

Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites

Rosić, Milena; Čebela, Maria; Labus, Nebojša; Radović, Marko; Aškrabić, Sonja; Dohčević-Mitrović, Zorana; Stojmenović, Marija

(Belgrade : Institut za multidisciplinarna istraživanja, 2023)

TY  - CONF
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Labus, Nebojša
AU  - Radović, Marko
AU  - Aškrabić, Sonja
AU  - Dohčević-Mitrović, Zorana
AU  - Stojmenović, Marija
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14661
AB  - Ca1-xGdxMnO3 (x = 0.05–0.20) nanostructured perovskites were successfully synthesized by modified glycine nitrate procedure (MGNP). Temperature intervals of sintering and phase transition during heating were revealed during dilatometric measurements. In order to determine the band gap values of the tested samples, ellipsometric measurements were performed in the UV-VIS spectral range. Decrease of band gap values with increase of Gd dopant content was attributed to n-type doping and upward shifting of the Fermi level in the conduction band. The investigation of the crystal structure and phase content of nanocrystalline Ca1- xGdxMnO3 powders was continued using micro-Raman spectroscopy. The electrical conductivity of Gd3+ doped sintered samples CaMnO3 as a function of temperature was measured by electrochemical impedance spectroscopy (EIS), in the temperature range of 400–700 °C. The corresponding activation energies of conductivity, measured in the investigated temperature range, were also discussed. The obtained research results showed that the highest hardness values of 7.58 GPa respectively, were achieved and that these nanostructured materials can be used as a high-density ceramic material for various industrial applications.
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites
UR  - https://hdl.handle.net/21.15107/rcub_dais_14661
ER  - 
@conference{
author = "Rosić, Milena and Čebela, Maria and Labus, Nebojša and Radović, Marko and Aškrabić, Sonja and Dohčević-Mitrović, Zorana and Stojmenović, Marija",
year = "2023",
abstract = "Ca1-xGdxMnO3 (x = 0.05–0.20) nanostructured perovskites were successfully synthesized by modified glycine nitrate procedure (MGNP). Temperature intervals of sintering and phase transition during heating were revealed during dilatometric measurements. In order to determine the band gap values of the tested samples, ellipsometric measurements were performed in the UV-VIS spectral range. Decrease of band gap values with increase of Gd dopant content was attributed to n-type doping and upward shifting of the Fermi level in the conduction band. The investigation of the crystal structure and phase content of nanocrystalline Ca1- xGdxMnO3 powders was continued using micro-Raman spectroscopy. The electrical conductivity of Gd3+ doped sintered samples CaMnO3 as a function of temperature was measured by electrochemical impedance spectroscopy (EIS), in the temperature range of 400–700 °C. The corresponding activation energies of conductivity, measured in the investigated temperature range, were also discussed. The obtained research results showed that the highest hardness values of 7.58 GPa respectively, were achieved and that these nanostructured materials can be used as a high-density ceramic material for various industrial applications.",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites",
url = "https://hdl.handle.net/21.15107/rcub_dais_14661"
}
Rosić, M., Čebela, M., Labus, N., Radović, M., Aškrabić, S., Dohčević-Mitrović, Z.,& Stojmenović, M.. (2023). Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja..
https://hdl.handle.net/21.15107/rcub_dais_14661
Rosić M, Čebela M, Labus N, Radović M, Aškrabić S, Dohčević-Mitrović Z, Stojmenović M. Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_14661 .
Rosić, Milena, Čebela, Maria, Labus, Nebojša, Radović, Marko, Aškrabić, Sonja, Dohčević-Mitrović, Zorana, Stojmenović, Marija, "Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_dais_14661 .