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Publications

Effects of Gentiana lutea Root on Vascular Diseases

Joksić, Gordana; Radak, Đorđe; Sudar-Milovanović, Emina; Obradović, Milan; Radovanović, Jelena; Isenović, Esma R.

(2021)

TY  - JOUR
AU  - Joksić, Gordana
AU  - Radak, Đorđe
AU  - Sudar-Milovanović, Emina
AU  - Obradović, Milan
AU  - Radovanović, Jelena
AU  - Isenović, Esma R.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9407
AB  - Background: Gentiana lutea (GL), commonly known as yellow gentian, bitter root, and bit-terwort, belongs to family Gentianaceae. GL belongs to genus Gentiana, which is a rich natural source of iridoids, secoiridoids, xantones, flavonoids, triterpenoids, and carbohydrates. Medicinal plants from Gentiana species have anti-oxidant, anti-inflammatory, anti-mitogenic, anti-proliferative, and lipid-lowering effects, as well as a cardioprotective, hypotensive, vasodilator and anti-platelet activities. Objective: We reviewed the recent literature related to the effects of Gentiana species, and their active components on vascular diseases. Methods: Data used for this review were obtained by searching the electronic database [PUB-MED/MEDLINE 1973-February 2020]. The primary data search terms of interest were: Gentiana lutea, Gentienacea family, phytochemistry, vascular diseases, treatment of vascular diseases, anti-oxidant, anti-inflammatory, anti-atherogenic. Conclusion: Gentiana species and their constituents affect many different factors related to vascular disease development and progression. Therefore, Gentiana-based therapeutics represent potentially use-ful drugs for the management of vascular diseases. © 2021 Bentham Science Publishers.
T2  - Current Vascular Pharmacology
T1  - Effects of Gentiana lutea Root on Vascular Diseases
VL  - 19
IS  - 4
SP  - 359
EP  - 369
DO  - 10.2174/1570161118666200529111314
ER  - 
@article{
author = "Joksić, Gordana and Radak, Đorđe and Sudar-Milovanović, Emina and Obradović, Milan and Radovanović, Jelena and Isenović, Esma R.",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9407",
abstract = "Background: Gentiana lutea (GL), commonly known as yellow gentian, bitter root, and bit-terwort, belongs to family Gentianaceae. GL belongs to genus Gentiana, which is a rich natural source of iridoids, secoiridoids, xantones, flavonoids, triterpenoids, and carbohydrates. Medicinal plants from Gentiana species have anti-oxidant, anti-inflammatory, anti-mitogenic, anti-proliferative, and lipid-lowering effects, as well as a cardioprotective, hypotensive, vasodilator and anti-platelet activities. Objective: We reviewed the recent literature related to the effects of Gentiana species, and their active components on vascular diseases. Methods: Data used for this review were obtained by searching the electronic database [PUB-MED/MEDLINE 1973-February 2020]. The primary data search terms of interest were: Gentiana lutea, Gentienacea family, phytochemistry, vascular diseases, treatment of vascular diseases, anti-oxidant, anti-inflammatory, anti-atherogenic. Conclusion: Gentiana species and their constituents affect many different factors related to vascular disease development and progression. Therefore, Gentiana-based therapeutics represent potentially use-ful drugs for the management of vascular diseases. © 2021 Bentham Science Publishers.",
journal = "Current Vascular Pharmacology",
title = "Effects of Gentiana lutea Root on Vascular Diseases",
volume = "19",
number = "4",
pages = "359-369",
doi = "10.2174/1570161118666200529111314"
}
Joksić, G., Radak, Đ., Sudar-Milovanović, E., Obradović, M., Radovanović, J.,& Isenović, E. R. (2021). Effects of Gentiana lutea Root on Vascular Diseases.
Current Vascular Pharmacology, 19(4), 359-369.
https://doi.org/10.2174/1570161118666200529111314
Joksić G, Radak Đ, Sudar-Milovanović E, Obradović M, Radovanović J, Isenović ER. Effects of Gentiana lutea Root on Vascular Diseases. Current Vascular Pharmacology. 2021;19(4):359-369
Joksić Gordana, Radak Đorđe, Sudar-Milovanović Emina, Obradović Milan, Radovanović Jelena, Isenović Esma R., "Effects of Gentiana lutea Root on Vascular Diseases" Current Vascular Pharmacology, 19, no. 4 (2021):359-369,
https://doi.org/10.2174/1570161118666200529111314 .

Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering

Matović, Branko; Maletaškić, Jelena; Prikhna, Tatiana; Urbanovich, Vladimir; Girman, Vladimir; Lisnichuk, Maksym; Todorović, Bratislav; Yoshida, Kutsami; Cvijović-Alagić, Ivana

(2021)

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Prikhna, Tatiana
AU  - Urbanovich, Vladimir
AU  - Girman, Vladimir
AU  - Lisnichuk, Maksym
AU  - Todorović, Bratislav
AU  - Yoshida, Kutsami
AU  - Cvijović-Alagić, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9405
AB  - Additive-free boron carbide (B4C) – silicon carbide (SiC) ceramic composites with different B4C and β-SiC powders ratio were densified using the high-pressure “anvil-type with hollows” apparatus at 1500 °C under a pressure of 4 GPa for 60 s in air. The effect of starting powders ratio on the composites sintering behavior, relative density, microstructural development, and thermomechanical properties was studied. The sintered samples hardness was found to be in the range from 24 to 31 GPa. The thermal conductivity measurements, conducted in the temperature range from room temperature to 1000 °C, showed that the thermal diffusivity of sintered samples was between 6 and 9.5 mm2/s whereas the thermal conductivity was in the range from 16 to 28 W/(m K). The results of this study show that the high-pressure sintering can be a very effective low-temperature densification method for the obtainment of additive-free B4C - β-SiC ceramic composites. © 2021 Elsevier Ltd
T2  - Journal of the European Ceramic Society
T1  - Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering
VL  - 41
IS  - 9
SP  - 4755
EP  - 4760
DO  - 10.1016/j.jeurceramsoc.2021.03.047
ER  - 
@article{
author = "Matović, Branko and Maletaškić, Jelena and Prikhna, Tatiana and Urbanovich, Vladimir and Girman, Vladimir and Lisnichuk, Maksym and Todorović, Bratislav and Yoshida, Kutsami and Cvijović-Alagić, Ivana",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9405",
abstract = "Additive-free boron carbide (B4C) – silicon carbide (SiC) ceramic composites with different B4C and β-SiC powders ratio were densified using the high-pressure “anvil-type with hollows” apparatus at 1500 °C under a pressure of 4 GPa for 60 s in air. The effect of starting powders ratio on the composites sintering behavior, relative density, microstructural development, and thermomechanical properties was studied. The sintered samples hardness was found to be in the range from 24 to 31 GPa. The thermal conductivity measurements, conducted in the temperature range from room temperature to 1000 °C, showed that the thermal diffusivity of sintered samples was between 6 and 9.5 mm2/s whereas the thermal conductivity was in the range from 16 to 28 W/(m K). The results of this study show that the high-pressure sintering can be a very effective low-temperature densification method for the obtainment of additive-free B4C - β-SiC ceramic composites. © 2021 Elsevier Ltd",
journal = "Journal of the European Ceramic Society",
title = "Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering",
volume = "41",
number = "9",
pages = "4755-4760",
doi = "10.1016/j.jeurceramsoc.2021.03.047"
}
Matović, B., Maletaškić, J., Prikhna, T., Urbanovich, V., Girman, V., Lisnichuk, M., Todorović, B., Yoshida, K.,& Cvijović-Alagić, I. (2021). Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering.
Journal of the European Ceramic Society, 41(9), 4755-4760.
https://doi.org/10.1016/j.jeurceramsoc.2021.03.047
Matović B, Maletaškić J, Prikhna T, Urbanovich V, Girman V, Lisnichuk M, Todorović B, Yoshida K, Cvijović-Alagić I. Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering. Journal of the European Ceramic Society. 2021;41(9):4755-4760
Matović Branko, Maletaškić Jelena, Prikhna Tatiana, Urbanovich Vladimir, Girman Vladimir, Lisnichuk Maksym, Todorović Bratislav, Yoshida Kutsami, Cvijović-Alagić Ivana, "Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering" Journal of the European Ceramic Society, 41, no. 9 (2021):4755-4760,
https://doi.org/10.1016/j.jeurceramsoc.2021.03.047 .
1

The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method

Nikolić, Violeta N.; Vasić, Milica; Milikić, Jadranka; Mariano, Jose F.M.L.

(2021)

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Vasić, Milica
AU  - Milikić, Jadranka
AU  - Mariano, Jose F.M.L.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9131
AB  - Abstract: The nanocomposite samples, containing copper and iron species in the silica matrix, were prepared by annealing at temperatures up to 1100°C. The samples were investigated by X-ray diffraction analysis, Fourier transform infrared spectroscopy, and cyclic voltammetry. The results of the performed study depict to the presence of a temperature gradient, which acts on the sample during the annealing treatment in the furnace. For the first time, the influence of the temperature gradient on the formation mechanism of the samples was discussed. © 2021, Pleiades Publishing, Ltd.
T2  - Physics of the Solid State
T1  - The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method
VL  - 63
IS  - 2
SP  - 332
EP  - 354
DO  - 10.1134/S1063783421020207
ER  - 
@article{
author = "Nikolić, Violeta N. and Vasić, Milica and Milikić, Jadranka and Mariano, Jose F.M.L.",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9131",
abstract = "Abstract: The nanocomposite samples, containing copper and iron species in the silica matrix, were prepared by annealing at temperatures up to 1100°C. The samples were investigated by X-ray diffraction analysis, Fourier transform infrared spectroscopy, and cyclic voltammetry. The results of the performed study depict to the presence of a temperature gradient, which acts on the sample during the annealing treatment in the furnace. For the first time, the influence of the temperature gradient on the formation mechanism of the samples was discussed. © 2021, Pleiades Publishing, Ltd.",
journal = "Physics of the Solid State",
title = "The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method",
volume = "63",
number = "2",
pages = "332-354",
doi = "10.1134/S1063783421020207"
}
Nikolić, V. N., Vasić, M., Milikić, J.,& Mariano, J. F.M.L. (2021). The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method.
Physics of the Solid State, 63(2), 332-354.
https://doi.org/10.1134/S1063783421020207
Nikolić VN, Vasić M, Milikić J, Mariano JF. The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method. Physics of the Solid State. 2021;63(2):332-354
Nikolić Violeta N., Vasić Milica, Milikić Jadranka, Mariano Jose F.M.L., "The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method" Physics of the Solid State, 63, no. 2 (2021):332-354,
https://doi.org/10.1134/S1063783421020207 .

Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence

Ćirić, Aleksandar; Stojadinović, Stevan; Ristić, Zoran; Zeković, Ivana Lj.; Kuzman, Sanja; Antić, Željka; Dramićanin, Miroslav

(2021)

TY  - JOUR
AU  - Ćirić, Aleksandar
AU  - Stojadinović, Stevan
AU  - Ristić, Zoran
AU  - Zeković, Ivana Lj.
AU  - Kuzman, Sanja
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9140
AB  - The introduction of additional functionalities to materials is exceptionally important as it opens new applications for them. Aluminum, one of the most abundant and important materials, is coated with luminescent Sm2+-doped γ-aluminium oxide to impart thermometric functionality. Considering the potential industrial applications, two of the most widely used aluminum alloys, 6061 and 7075, are also coated. For this purpose, plasma electrolytic oxidation (PEO), an effective technique for producing hard ceramic coatings on various metal surfaces, is used. It is shown that thermometric coatings can be produced on aluminum in one-step process by adding the raw precursor to the electrolyte. The valence reduction of Ln3+ to Ln2+ is achieved during the PEO process. The intense and broad (orange to deep red) emission from the coating shows supersensitivity to temperature changes over the 100–648 K range. The temperature is obtained from the coating emission using i) the emission intensity ratio method, ii) emission lifetime, and iii) emission band position with sensitivities of 4.8% K−1, 1.2% K−1, and 8 cm−1 K−1, respectively. Several applications would benefit from the thermometric coating's excellent temperature resolution of 0.04 K and the choice of three temperature read-outs that facilitate the coating's use in different luminescence thermometry setups. © 2021 Wiley-VCH GmbH
T2  - Advanced Materials Technologies
T1  - Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence
VL  - 6
IS  - 4
SP  - 2001201
DO  - 10.1002/admt.202001201
ER  - 
@article{
author = "Ćirić, Aleksandar and Stojadinović, Stevan and Ristić, Zoran and Zeković, Ivana Lj. and Kuzman, Sanja and Antić, Željka and Dramićanin, Miroslav",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9140",
abstract = "The introduction of additional functionalities to materials is exceptionally important as it opens new applications for them. Aluminum, one of the most abundant and important materials, is coated with luminescent Sm2+-doped γ-aluminium oxide to impart thermometric functionality. Considering the potential industrial applications, two of the most widely used aluminum alloys, 6061 and 7075, are also coated. For this purpose, plasma electrolytic oxidation (PEO), an effective technique for producing hard ceramic coatings on various metal surfaces, is used. It is shown that thermometric coatings can be produced on aluminum in one-step process by adding the raw precursor to the electrolyte. The valence reduction of Ln3+ to Ln2+ is achieved during the PEO process. The intense and broad (orange to deep red) emission from the coating shows supersensitivity to temperature changes over the 100–648 K range. The temperature is obtained from the coating emission using i) the emission intensity ratio method, ii) emission lifetime, and iii) emission band position with sensitivities of 4.8% K−1, 1.2% K−1, and 8 cm−1 K−1, respectively. Several applications would benefit from the thermometric coating's excellent temperature resolution of 0.04 K and the choice of three temperature read-outs that facilitate the coating's use in different luminescence thermometry setups. © 2021 Wiley-VCH GmbH",
journal = "Advanced Materials Technologies",
title = "Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence",
volume = "6",
number = "4",
pages = "2001201",
doi = "10.1002/admt.202001201"
}
Ćirić, A., Stojadinović, S., Ristić, Z., Zeković, I. Lj., Kuzman, S., Antić, Ž.,& Dramićanin, M. (2021). Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence.
Advanced Materials Technologies, 6(4), 2001201.
https://doi.org/10.1002/admt.202001201
Ćirić A, Stojadinović S, Ristić Z, Zeković IL, Kuzman S, Antić Ž, Dramićanin M. Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence. Advanced Materials Technologies. 2021;6(4):2001201
Ćirić Aleksandar, Stojadinović Stevan, Ristić Zoran, Zeković Ivana Lj., Kuzman Sanja, Antić Željka, Dramićanin Miroslav, "Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence" Advanced Materials Technologies, 6, no. 4 (2021):2001201,
https://doi.org/10.1002/admt.202001201 .
2
2
1

Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction

Janković, Bojan; Manić, Nebojša; Dodevski, Vladimir

(2021)

TY  - JOUR
AU  - Janković, Bojan
AU  - Manić, Nebojša
AU  - Dodevski, Vladimir
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9161
AB  - This paper provides insights into understanding the physical and chemical changes that take place during re-heating process of Poplar fluff bio-char derived by carbonization at high operating temperature (850 °C). Bio-char re-heating experiments were performed by simultaneous TGA-DTG-DSC techniques in N2 atmosphere at 5, 10, 15 and 20 °C min−1. Kinetic modeling of the process was done through implementation of model-free and model-based approaches. It was identified that re-heating process contains two stages. The first was described by single consecutive reaction step (up to 200 °C) which is attributed to removal of physisorbed moisture at surface and in pores of carbonized material, while second was described by multiple reactions, including one consecutive step and two competitive steps. In the last, consecutive pathway includes reduction of PAH compounds (400–600 °C) into smaller ones, changing degree of condensation of carbon structure continuously. Competitive steps encompass competition between C10H8 (naphthalene) (700–780 °C) and C9H8 (indene) (700–750 °C) molecules decomposition. It was found that used heating rates have great influence on regulating the amount of gaseous (combustible) products from these reactions. It was established that internal heat and mass transfer processes control the release of products. Changing the pyrolysis mechanism with temperature of carbonized bio-char is the main factor for occurrence of true kinetic compensation effect, which is also discussed by applied isothermal life-time analysis. © 2021 Elsevier Ltd
T2  - Fuel
T1  - Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction
VL  - 296
SP  - 120637
DO  - 10.1016/j.fuel.2021.120637
ER  - 
@article{
author = "Janković, Bojan and Manić, Nebojša and Dodevski, Vladimir",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9161",
abstract = "This paper provides insights into understanding the physical and chemical changes that take place during re-heating process of Poplar fluff bio-char derived by carbonization at high operating temperature (850 °C). Bio-char re-heating experiments were performed by simultaneous TGA-DTG-DSC techniques in N2 atmosphere at 5, 10, 15 and 20 °C min−1. Kinetic modeling of the process was done through implementation of model-free and model-based approaches. It was identified that re-heating process contains two stages. The first was described by single consecutive reaction step (up to 200 °C) which is attributed to removal of physisorbed moisture at surface and in pores of carbonized material, while second was described by multiple reactions, including one consecutive step and two competitive steps. In the last, consecutive pathway includes reduction of PAH compounds (400–600 °C) into smaller ones, changing degree of condensation of carbon structure continuously. Competitive steps encompass competition between C10H8 (naphthalene) (700–780 °C) and C9H8 (indene) (700–750 °C) molecules decomposition. It was found that used heating rates have great influence on regulating the amount of gaseous (combustible) products from these reactions. It was established that internal heat and mass transfer processes control the release of products. Changing the pyrolysis mechanism with temperature of carbonized bio-char is the main factor for occurrence of true kinetic compensation effect, which is also discussed by applied isothermal life-time analysis. © 2021 Elsevier Ltd",
journal = "Fuel",
title = "Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction",
volume = "296",
pages = "120637",
doi = "10.1016/j.fuel.2021.120637"
}
Janković, B., Manić, N.,& Dodevski, V. (2021). Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction.
Fuel, 296, 120637.
https://doi.org/10.1016/j.fuel.2021.120637
Janković B, Manić N, Dodevski V. Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction. Fuel. 2021;296:120637
Janković Bojan, Manić Nebojša, Dodevski Vladimir, "Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction" Fuel, 296 (2021):120637,
https://doi.org/10.1016/j.fuel.2021.120637 .

On the long-distance charge transport in DNA-like macromolecules

Čevizović, Dalibor; Chizhov, A.V.; Ivić, Zoran; Reshetnyak, A.A.

(2021)

TY  - JOUR
AU  - Čevizović, Dalibor
AU  - Chizhov, A.V.
AU  - Ivić, Zoran
AU  - Reshetnyak, A.A.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9158
AB  - In this paper, we investigate the possibility of stable migration of charge carriers over long distances in DNA-like macromolecular structures in the form of an adiabatic soliton and derive the conditions for the formation of solitons. We find two types of soliton solutions: symmetric and antisymmetric. Comparing the energy of both types of soliton solutions with the energy of free extra charge, we find the region of the system parameters in which the soliton states are more energetically favorable than the states of quasi-free charges. At the same time, which of the two mentioned soliton solutions corresponds to an energetically favorable state depends on the ratio of the energy parameters of the molecular structure. © 2021, ITMO University. All rights reserved.
T2  - Nanosystems: Physics, Chemistry, Mathematics
T1  - On the long-distance charge transport in DNA-like macromolecules
VL  - 12
IS  - 1
SP  - 32
EP  - 41
DO  - 10.17586/2220-8054-2021-12-1-32-41
ER  - 
@article{
author = "Čevizović, Dalibor and Chizhov, A.V. and Ivić, Zoran and Reshetnyak, A.A.",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9158",
abstract = "In this paper, we investigate the possibility of stable migration of charge carriers over long distances in DNA-like macromolecular structures in the form of an adiabatic soliton and derive the conditions for the formation of solitons. We find two types of soliton solutions: symmetric and antisymmetric. Comparing the energy of both types of soliton solutions with the energy of free extra charge, we find the region of the system parameters in which the soliton states are more energetically favorable than the states of quasi-free charges. At the same time, which of the two mentioned soliton solutions corresponds to an energetically favorable state depends on the ratio of the energy parameters of the molecular structure. © 2021, ITMO University. All rights reserved.",
journal = "Nanosystems: Physics, Chemistry, Mathematics",
title = "On the long-distance charge transport in DNA-like macromolecules",
volume = "12",
number = "1",
pages = "32-41",
doi = "10.17586/2220-8054-2021-12-1-32-41"
}
Čevizović, D., Chizhov, A.V., Ivić, Z.,& Reshetnyak, A.A. (2021). On the long-distance charge transport in DNA-like macromolecules.
Nanosystems: Physics, Chemistry, Mathematics, 12(1), 32-41.
https://doi.org/10.17586/2220-8054-2021-12-1-32-41
Čevizović D, Chizhov A, Ivić Z, Reshetnyak A. On the long-distance charge transport in DNA-like macromolecules. Nanosystems: Physics, Chemistry, Mathematics. 2021;12(1):32-41
Čevizović Dalibor, Chizhov A.V., Ivić Zoran, Reshetnyak A.A., "On the long-distance charge transport in DNA-like macromolecules" Nanosystems: Physics, Chemistry, Mathematics, 12, no. 1 (2021):32-41,
https://doi.org/10.17586/2220-8054-2021-12-1-32-41 .

Preparation and validation of laboratory radioactive standards for experimental calibration in gamma ray spectrometry

Vukanac, Ivana; Đurašević, Mirjana M.; Krneta-Nikolić, Jelena D.; Pantelić, Gordana K.; Rajačić, Milica; Janković, Marija M.; Sarap, Nataša; Todorović, Dragana

(2021)

TY  - JOUR
AU  - Vukanac, Ivana
AU  - Đurašević, Mirjana M.
AU  - Krneta-Nikolić, Jelena D.
AU  - Pantelić, Gordana K.
AU  - Rajačić, Milica
AU  - Janković, Marija M.
AU  - Sarap, Nataša
AU  - Todorović, Dragana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9136
AB  - The procedure of radioactive standards preparation by spiking selected matrices with a certified mixture of radionuclides and its validation is presented in this paper. The uncertainty budget of standard total activity was elaborated in details. The experimentally obtained efficiency curves, as well as comparison with the curves obtained by the efficiency transfer, are presented. Additionally, in order to confirm claimed homogeneity of prepared standard bulk materials, the efficiency versus density dependence for the individual gamma ray energies was checked for the same geometries and the results are presented. The results of the participation in recent IAEA PT scheme are discussed also. © 2021 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Preparation and validation of laboratory radioactive standards for experimental calibration in gamma ray spectrometry
VL  - 183
SP  - 109407
DO  - 10.1016/j.radphyschem.2021.109407
ER  - 
@article{
author = "Vukanac, Ivana and Đurašević, Mirjana M. and Krneta-Nikolić, Jelena D. and Pantelić, Gordana K. and Rajačić, Milica and Janković, Marija M. and Sarap, Nataša and Todorović, Dragana",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9136",
abstract = "The procedure of radioactive standards preparation by spiking selected matrices with a certified mixture of radionuclides and its validation is presented in this paper. The uncertainty budget of standard total activity was elaborated in details. The experimentally obtained efficiency curves, as well as comparison with the curves obtained by the efficiency transfer, are presented. Additionally, in order to confirm claimed homogeneity of prepared standard bulk materials, the efficiency versus density dependence for the individual gamma ray energies was checked for the same geometries and the results are presented. The results of the participation in recent IAEA PT scheme are discussed also. © 2021 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Preparation and validation of laboratory radioactive standards for experimental calibration in gamma ray spectrometry",
volume = "183",
pages = "109407",
doi = "10.1016/j.radphyschem.2021.109407"
}
Vukanac, I., Đurašević, M. M., Krneta-Nikolić, J. D., Pantelić, G. K., Rajačić, M., Janković, M. M., Sarap, N.,& Todorović, D. (2021). Preparation and validation of laboratory radioactive standards for experimental calibration in gamma ray spectrometry.
Radiation Physics and Chemistry, 183, 109407.
https://doi.org/10.1016/j.radphyschem.2021.109407
Vukanac I, Đurašević MM, Krneta-Nikolić JD, Pantelić GK, Rajačić M, Janković MM, Sarap N, Todorović D. Preparation and validation of laboratory radioactive standards for experimental calibration in gamma ray spectrometry. Radiation Physics and Chemistry. 2021;183:109407
Vukanac Ivana, Đurašević Mirjana M., Krneta-Nikolić Jelena D., Pantelić Gordana K., Rajačić Milica, Janković Marija M., Sarap Nataša, Todorović Dragana, "Preparation and validation of laboratory radioactive standards for experimental calibration in gamma ray spectrometry" Radiation Physics and Chemistry, 183 (2021):109407,
https://doi.org/10.1016/j.radphyschem.2021.109407 .

Photoluminescence of ZnO:Eu3+ and ZnO:Tb3+ coatings formed by plasma electrolytic oxidation of pure zinc substrate

Stojadinović, Stevan; Ćirić, Aleksandar

(2021)

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Ćirić, Aleksandar
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9135
AB  - Eu3+ and Tb3+ doped ZnO optical coatings were formed by the Plasma Electrolytic Oxidation (PEO) method from the pure Zn sheet, with various dopant concentrations. The morphologies show no significant change with the introduced dopant or their concentrations, with typical appearance of PEO formed coatings. All elements are uniformly distributed, and concentration of incorporated dopants is related to the concentrations of the Eu2O3 or Tb4O7 particles added to the basic electrolyte. Wurtzite structure of ZnO was identified in all the samples, with no change induced by the dopants. Under 260 nm excitation ZnO emits broad-band in the visible region attributed to oxygen interstitial defects and oxygen vacancies. Photoluminescence (PL) of ZnO:X3+ (X = Eu, Tb) is a sum of PL from ZnO and 4f–4f dopant emissions. Eu3+ and Tb3+ are most effectively excited in charge-transfer band and 4f5d levels, respectively. By increasing concentrations of the dopants the broad PL decreases in favor of the 4f–4f dopant transitions, an indication of the energy transfer. ZnO:Eu3+ spectra are dominated by the hypersensitive 5D0→7F2 transition. Eu3+ ions are incorporated in a highly asymmetric environment. PL emission at 541 nm is the most intense in ZnO:Tb3+. Judd-Ofelt intensity parameters rise with increasing Eu3+ concentration, up to Ω2 = 7.8·10−42 cm2 and Ω4 = 4.4·10−42 cm2. Radiative lifetime of 5D0 level drops to 1.12 ms. Chromaticity of PL varies with concentration only when the samples are irradiated by UV light, from white to orange-red or green for Eu3+ or Tb3+ doped samples, respectively. Eu3+ under 394 nm and 464 nm irradiation gives 99.5% color-purity. © 2021 Elsevier B.V.
T2  - Journal of Luminescence
T1  - Photoluminescence of ZnO:Eu3+ and ZnO:Tb3+ coatings formed by plasma electrolytic oxidation of pure zinc substrate
VL  - 235
SP  - 118022
DO  - 10.1016/j.jlumin.2021.118022
ER  - 
@article{
author = "Stojadinović, Stevan and Ćirić, Aleksandar",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9135",
abstract = "Eu3+ and Tb3+ doped ZnO optical coatings were formed by the Plasma Electrolytic Oxidation (PEO) method from the pure Zn sheet, with various dopant concentrations. The morphologies show no significant change with the introduced dopant or their concentrations, with typical appearance of PEO formed coatings. All elements are uniformly distributed, and concentration of incorporated dopants is related to the concentrations of the Eu2O3 or Tb4O7 particles added to the basic electrolyte. Wurtzite structure of ZnO was identified in all the samples, with no change induced by the dopants. Under 260 nm excitation ZnO emits broad-band in the visible region attributed to oxygen interstitial defects and oxygen vacancies. Photoluminescence (PL) of ZnO:X3+ (X = Eu, Tb) is a sum of PL from ZnO and 4f–4f dopant emissions. Eu3+ and Tb3+ are most effectively excited in charge-transfer band and 4f5d levels, respectively. By increasing concentrations of the dopants the broad PL decreases in favor of the 4f–4f dopant transitions, an indication of the energy transfer. ZnO:Eu3+ spectra are dominated by the hypersensitive 5D0→7F2 transition. Eu3+ ions are incorporated in a highly asymmetric environment. PL emission at 541 nm is the most intense in ZnO:Tb3+. Judd-Ofelt intensity parameters rise with increasing Eu3+ concentration, up to Ω2 = 7.8·10−42 cm2 and Ω4 = 4.4·10−42 cm2. Radiative lifetime of 5D0 level drops to 1.12 ms. Chromaticity of PL varies with concentration only when the samples are irradiated by UV light, from white to orange-red or green for Eu3+ or Tb3+ doped samples, respectively. Eu3+ under 394 nm and 464 nm irradiation gives 99.5% color-purity. © 2021 Elsevier B.V.",
journal = "Journal of Luminescence",
title = "Photoluminescence of ZnO:Eu3+ and ZnO:Tb3+ coatings formed by plasma electrolytic oxidation of pure zinc substrate",
volume = "235",
pages = "118022",
doi = "10.1016/j.jlumin.2021.118022"
}
Stojadinović, S.,& Ćirić, A. (2021). Photoluminescence of ZnO:Eu3+ and ZnO:Tb3+ coatings formed by plasma electrolytic oxidation of pure zinc substrate.
Journal of Luminescence, 235, 118022.
https://doi.org/10.1016/j.jlumin.2021.118022
Stojadinović S, Ćirić A. Photoluminescence of ZnO:Eu3+ and ZnO:Tb3+ coatings formed by plasma electrolytic oxidation of pure zinc substrate. Journal of Luminescence. 2021;235:118022
Stojadinović Stevan, Ćirić Aleksandar, "Photoluminescence of ZnO:Eu3+ and ZnO:Tb3+ coatings formed by plasma electrolytic oxidation of pure zinc substrate" Journal of Luminescence, 235 (2021):118022,
https://doi.org/10.1016/j.jlumin.2021.118022 .

Probing Band Topology Using Modulational Instability

Leykam, Daniel; Smolina, Ekaterina; Maluckov, Aleksandra; Flach, Sergej; Smirnova, Daria A

(2021)

TY  - JOUR
AU  - Leykam, Daniel
AU  - Smolina, Ekaterina
AU  - Maluckov, Aleksandra
AU  - Flach, Sergej
AU  - Smirnova, Daria A
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9153
AB  - We analyze the modulational instability of nonlinear Bloch waves in topological photonic lattices. In the initial phase of the instability development captured by the linear stability analysis, long wavelength instabilities and bifurcations of the nonlinear Bloch waves are sensitive to topological band inversions. At longer timescales, nonlinear wave mixing induces spreading of energy through the entire band and spontaneous creation of wave polarization singularities determined by the band Chern number. Our analytical and numerical results establish modulational instability as a tool to probe bulk topological invariants and create topologically nontrivial wave fields. © 2021 American Physical Society.
T2  - Physical Review Letters
T1  - Probing Band Topology Using Modulational Instability
VL  - 126
IS  - 7
SP  - 073901
DO  - 10.1103/PhysRevLett.126.073901
ER  - 
@article{
author = "Leykam, Daniel and Smolina, Ekaterina and Maluckov, Aleksandra and Flach, Sergej and Smirnova, Daria A",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9153",
abstract = "We analyze the modulational instability of nonlinear Bloch waves in topological photonic lattices. In the initial phase of the instability development captured by the linear stability analysis, long wavelength instabilities and bifurcations of the nonlinear Bloch waves are sensitive to topological band inversions. At longer timescales, nonlinear wave mixing induces spreading of energy through the entire band and spontaneous creation of wave polarization singularities determined by the band Chern number. Our analytical and numerical results establish modulational instability as a tool to probe bulk topological invariants and create topologically nontrivial wave fields. © 2021 American Physical Society.",
journal = "Physical Review Letters",
title = "Probing Band Topology Using Modulational Instability",
volume = "126",
number = "7",
pages = "073901",
doi = "10.1103/PhysRevLett.126.073901"
}
Leykam, D., Smolina, E., Maluckov, A., Flach, S.,& Smirnova, D. A. (2021). Probing Band Topology Using Modulational Instability.
Physical Review Letters, 126(7), 073901.
https://doi.org/10.1103/PhysRevLett.126.073901
Leykam D, Smolina E, Maluckov A, Flach S, Smirnova DA. Probing Band Topology Using Modulational Instability. Physical Review Letters. 2021;126(7):073901
Leykam Daniel, Smolina Ekaterina, Maluckov Aleksandra, Flach Sergej, Smirnova Daria A, "Probing Band Topology Using Modulational Instability" Physical Review Letters, 126, no. 7 (2021):073901,
https://doi.org/10.1103/PhysRevLett.126.073901 .
52

Classical patterns in the quantum rainbow channeling of high energy electrons

Ćosić, Marko; Petrović, Srđan M.; Takabayashi, Yuichi

(2021)

TY  - JOUR
AU  - Ćosić, Marko
AU  - Petrović, Srđan M.
AU  - Takabayashi, Yuichi
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9144
AB  - We are investigating the quantum dynamics of a well-collimated electron beam transmitting through planar channels of the Si crystal. Electron states were represented by wave packets while the electron beam is treated as an ensemble of noninteracting wave packets. We have investigated the relationship between classical caustic pattern and anharmonicity of the potential and analyzed how quantum dynamic depends on the wave packet impact parameter and beam's angular divergence. We found that the extrema of the electron trajectory period, considered as a function of the impact parameter, determine the shape of the caustic pattern. All wave packet probability densities have multiple maxima generated by a self-interference. Their sum, that represents probability density of an ensemble, was found to depends strongly on the beam angular divergence. For small divergence, most peaks of different wave packets are aligned causing wavelike behavior of the ensemble. For moderate angular divergence maxima of some wave packets, are aligned with minima of others, resulting in the emergence of the classical caustic pattern. We have shown and experimentally confirmed that the only indication that the observed caustic pattern is generated by the quantum dynamics is a slight systematic shift of the corresponding caustic maxima. © 2021 American Physical Society.
T2  - Physical Review A
T1  - Classical patterns in the quantum rainbow channeling of high energy electrons
VL  - 103
IS  - 2
SP  - 022818
DO  - 10.1103/PhysRevA.103.022818
ER  - 
@article{
author = "Ćosić, Marko and Petrović, Srđan M. and Takabayashi, Yuichi",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9144",
abstract = "We are investigating the quantum dynamics of a well-collimated electron beam transmitting through planar channels of the Si crystal. Electron states were represented by wave packets while the electron beam is treated as an ensemble of noninteracting wave packets. We have investigated the relationship between classical caustic pattern and anharmonicity of the potential and analyzed how quantum dynamic depends on the wave packet impact parameter and beam's angular divergence. We found that the extrema of the electron trajectory period, considered as a function of the impact parameter, determine the shape of the caustic pattern. All wave packet probability densities have multiple maxima generated by a self-interference. Their sum, that represents probability density of an ensemble, was found to depends strongly on the beam angular divergence. For small divergence, most peaks of different wave packets are aligned causing wavelike behavior of the ensemble. For moderate angular divergence maxima of some wave packets, are aligned with minima of others, resulting in the emergence of the classical caustic pattern. We have shown and experimentally confirmed that the only indication that the observed caustic pattern is generated by the quantum dynamics is a slight systematic shift of the corresponding caustic maxima. © 2021 American Physical Society.",
journal = "Physical Review A",
title = "Classical patterns in the quantum rainbow channeling of high energy electrons",
volume = "103",
number = "2",
pages = "022818",
doi = "10.1103/PhysRevA.103.022818"
}
Ćosić, M., Petrović, S. M.,& Takabayashi, Y. (2021). Classical patterns in the quantum rainbow channeling of high energy electrons.
Physical Review A, 103(2), 022818.
https://doi.org/10.1103/PhysRevA.103.022818
Ćosić M, Petrović SM, Takabayashi Y. Classical patterns in the quantum rainbow channeling of high energy electrons. Physical Review A. 2021;103(2):022818
Ćosić Marko, Petrović Srđan M., Takabayashi Yuichi, "Classical patterns in the quantum rainbow channeling of high energy electrons" Physical Review A, 103, no. 2 (2021):022818,
https://doi.org/10.1103/PhysRevA.103.022818 .

Improving the photocatalytic activity of tetragonal BiVO4 with zircon-type structure through W doping; Ab initio calculations

Toprek, Dragan; Koteski, Vasil J.

(2021)

TY  - JOUR
AU  - Toprek, Dragan
AU  - Koteski, Vasil J.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9139
AB  - In this paper we studied the effects of the concentration of W as a doped atom on the V lattice site on the electronic and optical properties of tetragonal zircon-type BiVO4 structure. The calculations were performed by the first-principles density functional theory WIEN2k code. The doping strategy was targeting V atoms substituted by W atoms using the same lattice parameters as pure BiVO4 structure. To avoid the self interaction of impurities, the supercell method was adopted ensuring a sufficient length between the impurities in all directions. For all considered concentrations, the optical properties in the visible light range of λ≥550nm are improved over the undoped BiVO4. © 2021 Elsevier B.V.
T2  - Materials Chemistry and Physics
T1  - Improving the photocatalytic activity of tetragonal BiVO4 with zircon-type structure through W doping; Ab initio calculations
VL  - 264
SP  - 124439
DO  - 10.1016/j.matchemphys.2021.124439
ER  - 
@article{
author = "Toprek, Dragan and Koteski, Vasil J.",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9139",
abstract = "In this paper we studied the effects of the concentration of W as a doped atom on the V lattice site on the electronic and optical properties of tetragonal zircon-type BiVO4 structure. The calculations were performed by the first-principles density functional theory WIEN2k code. The doping strategy was targeting V atoms substituted by W atoms using the same lattice parameters as pure BiVO4 structure. To avoid the self interaction of impurities, the supercell method was adopted ensuring a sufficient length between the impurities in all directions. For all considered concentrations, the optical properties in the visible light range of λ≥550nm are improved over the undoped BiVO4. © 2021 Elsevier B.V.",
journal = "Materials Chemistry and Physics",
title = "Improving the photocatalytic activity of tetragonal BiVO4 with zircon-type structure through W doping; Ab initio calculations",
volume = "264",
pages = "124439",
doi = "10.1016/j.matchemphys.2021.124439"
}
Toprek, D.,& Koteski, V. J. (2021). Improving the photocatalytic activity of tetragonal BiVO4 with zircon-type structure through W doping; Ab initio calculations.
Materials Chemistry and Physics, 264, 124439.
https://doi.org/10.1016/j.matchemphys.2021.124439
Toprek D, Koteski VJ. Improving the photocatalytic activity of tetragonal BiVO4 with zircon-type structure through W doping; Ab initio calculations. Materials Chemistry and Physics. 2021;264:124439
Toprek Dragan, Koteski Vasil J., "Improving the photocatalytic activity of tetragonal BiVO4 with zircon-type structure through W doping; Ab initio calculations" Materials Chemistry and Physics, 264 (2021):124439,
https://doi.org/10.1016/j.matchemphys.2021.124439 .
1

Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination

Radojević, Miloš; Janković, Bojan Ž.; Stojiljković, Dragoslava; Jovanović, Vladimir; Čeković, Ivana; Manić, Nebojša

(2021)

TY  - JOUR
AU  - Radojević, Miloš
AU  - Janković, Bojan Ž.
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir
AU  - Čeković, Ivana
AU  - Manić, Nebojša
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9138
AB  - This paper provides in-depth knowledge about the evolved gas analysis interpretation via newly proposed semi-quantitative approach, arising from thermogravimetric analysis (TGA) – mass spectrometry (MS) coupled measurements, for studying pyrolysis behavior of three kinds of biomass waste materials (spent coffee grounds, beech sawdust and wheat straw). TGA – MS coupling allows accurate correlation between molecular ion peak and fragment peaks to the corresponding mass loss rates from derivative thermogravimetry curves. Within proposed semi-quantitative analysis, MS spectra were interpreted through the comparative analysis of compounds fragments and of the compound itself, where the single atomic mass unit was identified by multiple compounds exhibition. It was shown that by this procedure which involves overlapping multiple curves supervising, the identification of gases in volatiles complex scheme becomes more simplified. By setting up semi-quantitative formulas, easy and reliable calculations of gaseous products yield and syngas energy capacities are possible to achieve. The H2/CO ratio derived from the proposed method for wood waste product (sawdust) is in an excellent agreement with H2/CO ratio for sawdust syngas production, in fuel reactor for biomass gasification and H2 production. © 2021 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination
VL  - 699
SP  - 178912
DO  - 10.1016/j.tca.2021.178912
ER  - 
@article{
author = "Radojević, Miloš and Janković, Bojan Ž. and Stojiljković, Dragoslava and Jovanović, Vladimir and Čeković, Ivana and Manić, Nebojša",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9138",
abstract = "This paper provides in-depth knowledge about the evolved gas analysis interpretation via newly proposed semi-quantitative approach, arising from thermogravimetric analysis (TGA) – mass spectrometry (MS) coupled measurements, for studying pyrolysis behavior of three kinds of biomass waste materials (spent coffee grounds, beech sawdust and wheat straw). TGA – MS coupling allows accurate correlation between molecular ion peak and fragment peaks to the corresponding mass loss rates from derivative thermogravimetry curves. Within proposed semi-quantitative analysis, MS spectra were interpreted through the comparative analysis of compounds fragments and of the compound itself, where the single atomic mass unit was identified by multiple compounds exhibition. It was shown that by this procedure which involves overlapping multiple curves supervising, the identification of gases in volatiles complex scheme becomes more simplified. By setting up semi-quantitative formulas, easy and reliable calculations of gaseous products yield and syngas energy capacities are possible to achieve. The H2/CO ratio derived from the proposed method for wood waste product (sawdust) is in an excellent agreement with H2/CO ratio for sawdust syngas production, in fuel reactor for biomass gasification and H2 production. © 2021 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination",
volume = "699",
pages = "178912",
doi = "10.1016/j.tca.2021.178912"
}
Radojević, M., Janković, B. Ž., Stojiljković, D., Jovanović, V., Čeković, I.,& Manić, N. (2021). Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination.
Thermochimica Acta, 699, 178912.
https://doi.org/10.1016/j.tca.2021.178912
Radojević M, Janković BŽ, Stojiljković D, Jovanović V, Čeković I, Manić N. Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination. Thermochimica Acta. 2021;699:178912
Radojević Miloš, Janković Bojan Ž., Stojiljković Dragoslava, Jovanović Vladimir, Čeković Ivana, Manić Nebojša, "Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination" Thermochimica Acta, 699 (2021):178912,
https://doi.org/10.1016/j.tca.2021.178912 .

Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study

Dragojlović, Milijana; Milanović, Igor; Gradišek, Anton; Kurko, Sandra; Mitrić, Miodrag; Umićević, Ana; Radaković, Jana; Batalović, Katarina

(2021)

TY  - JOUR
AU  - Dragojlović, Milijana
AU  - Milanović, Igor
AU  - Gradišek, Anton
AU  - Kurko, Sandra
AU  - Mitrić, Miodrag
AU  - Umićević, Ana
AU  - Radaković, Jana
AU  - Batalović, Katarina
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9087
AB  - LiAlH4 is a promising material for hydrogen storage, having the theoretical gravimetric density of 10.6 wt% H2. In order to decrease the temperature where hydrogen is released, we investigated the catalytic influence of Fe2O3 on LiAlH4 dehydrogenation, as a model case for understanding the effects transition oxide additives have in the catalysis process. Quick mechanochemical synthesis of LiAlH4 + 5 wt% Fe2O3 led to the significant decrease of the hydrogen desorption temperature, and desorption of over 7 wt%H2 in the temperature range 143–154 °C. Density functional theory (DFT)-based calculations with Tran-Blaha modified Becke-Johnson functional (TBmBJ) address the electronic structure of LiAlH4 and Li3AlH6. 57Fe Mössbauer study shows the change in the oxidational state of iron during hydrogen desorption, while the 1H NMR study reveals the presence of paramagnetic species that affect relaxation. The electron transfer from hydrides is discussed as the proposed mechanism of destabilization of LiAlH4 + 5 wt% Fe2O3. © 2021 Hydrogen Energy Publications LLC
T2  - International Journal of Hydrogen Energy
T1  - Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study
VL  - 46
IS  - 24
SP  - 13070
EP  - 13081
DO  - 10.1016/j.ijhydene.2021.01.086
ER  - 
@article{
author = "Dragojlović, Milijana and Milanović, Igor and Gradišek, Anton and Kurko, Sandra and Mitrić, Miodrag and Umićević, Ana and Radaković, Jana and Batalović, Katarina",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9087",
abstract = "LiAlH4 is a promising material for hydrogen storage, having the theoretical gravimetric density of 10.6 wt% H2. In order to decrease the temperature where hydrogen is released, we investigated the catalytic influence of Fe2O3 on LiAlH4 dehydrogenation, as a model case for understanding the effects transition oxide additives have in the catalysis process. Quick mechanochemical synthesis of LiAlH4 + 5 wt% Fe2O3 led to the significant decrease of the hydrogen desorption temperature, and desorption of over 7 wt%H2 in the temperature range 143–154 °C. Density functional theory (DFT)-based calculations with Tran-Blaha modified Becke-Johnson functional (TBmBJ) address the electronic structure of LiAlH4 and Li3AlH6. 57Fe Mössbauer study shows the change in the oxidational state of iron during hydrogen desorption, while the 1H NMR study reveals the presence of paramagnetic species that affect relaxation. The electron transfer from hydrides is discussed as the proposed mechanism of destabilization of LiAlH4 + 5 wt% Fe2O3. © 2021 Hydrogen Energy Publications LLC",
journal = "International Journal of Hydrogen Energy",
title = "Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study",
volume = "46",
number = "24",
pages = "13070-13081",
doi = "10.1016/j.ijhydene.2021.01.086"
}
Dragojlović, M., Milanović, I., Gradišek, A., Kurko, S., Mitrić, M., Umićević, A., Radaković, J.,& Batalović, K. (2021). Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study.
International Journal of Hydrogen Energy, 46(24), 13070-13081.
https://doi.org/10.1016/j.ijhydene.2021.01.086
Dragojlović M, Milanović I, Gradišek A, Kurko S, Mitrić M, Umićević A, Radaković J, Batalović K. Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study. International Journal of Hydrogen Energy. 2021;46(24):13070-13081
Dragojlović Milijana, Milanović Igor, Gradišek Anton, Kurko Sandra, Mitrić Miodrag, Umićević Ana, Radaković Jana, Batalović Katarina, "Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study" International Journal of Hydrogen Energy, 46, no. 24 (2021):13070-13081,
https://doi.org/10.1016/j.ijhydene.2021.01.086 .

Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study

Dragojlović, Milijana; Milanović, Igor; Gradišek, Anton; Kurko, Sandra V.; Mitrić, Miodrag; Umićević, Ana; Radaković, Jana; Batalović, Katarina

(2021)

TY  - JOUR
AU  - Dragojlović, Milijana
AU  - Milanović, Igor
AU  - Gradišek, Anton
AU  - Kurko, Sandra V.
AU  - Mitrić, Miodrag
AU  - Umićević, Ana
AU  - Radaković, Jana
AU  - Batalović, Katarina
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9091
AB  - LiAlH4 is a promising material for hydrogen storage, having the theoretical gravimetric density of 10.6 wt% H2. In order to decrease the temperature where hydrogen is released, we investigated the catalytic influence of Fe2O3 on LiAlH4 dehydrogenation, as a model case for understanding the effects transition oxide additives have in the catalysis process. Quick mechanochemical synthesis of LiAlH4 + 5 wt% Fe2O3 led to the significant decrease of the hydrogen desorption temperature, and desorption of over 7 wt%H2 in the temperature range 143–154 °C. Density functional theory (DFT)-based calculations with Tran-Blaha modified Becke-Johnson functional (TBmBJ) address the electronic structure of LiAlH4 and Li3AlH6. 57Fe Mössbauer study shows the change in the oxidational state of iron during hydrogen desorption, while the 1H NMR study reveals the presence of paramagnetic species that affect relaxation. The electron transfer from hydrides is discussed as the proposed mechanism of destabilization of LiAlH4 + 5 wt% Fe2O3. © 2021 Hydrogen Energy Publications LLC
T2  - International Journal of Hydrogen Energy
T1  - Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study
VL  - 46
IS  - 24
SP  - 13070
EP  - 13081
DO  - 10.1016/j.ijhydene.2021.01.086
ER  - 
@article{
author = "Dragojlović, Milijana and Milanović, Igor and Gradišek, Anton and Kurko, Sandra V. and Mitrić, Miodrag and Umićević, Ana and Radaković, Jana and Batalović, Katarina",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9091",
abstract = "LiAlH4 is a promising material for hydrogen storage, having the theoretical gravimetric density of 10.6 wt% H2. In order to decrease the temperature where hydrogen is released, we investigated the catalytic influence of Fe2O3 on LiAlH4 dehydrogenation, as a model case for understanding the effects transition oxide additives have in the catalysis process. Quick mechanochemical synthesis of LiAlH4 + 5 wt% Fe2O3 led to the significant decrease of the hydrogen desorption temperature, and desorption of over 7 wt%H2 in the temperature range 143–154 °C. Density functional theory (DFT)-based calculations with Tran-Blaha modified Becke-Johnson functional (TBmBJ) address the electronic structure of LiAlH4 and Li3AlH6. 57Fe Mössbauer study shows the change in the oxidational state of iron during hydrogen desorption, while the 1H NMR study reveals the presence of paramagnetic species that affect relaxation. The electron transfer from hydrides is discussed as the proposed mechanism of destabilization of LiAlH4 + 5 wt% Fe2O3. © 2021 Hydrogen Energy Publications LLC",
journal = "International Journal of Hydrogen Energy",
title = "Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study",
volume = "46",
number = "24",
pages = "13070-13081",
doi = "10.1016/j.ijhydene.2021.01.086"
}
Dragojlović, M., Milanović, I., Gradišek, A., Kurko, S. V., Mitrić, M., Umićević, A., Radaković, J.,& Batalović, K. (2021). Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study.
International Journal of Hydrogen Energy, 46(24), 13070-13081.
https://doi.org/10.1016/j.ijhydene.2021.01.086
Dragojlović M, Milanović I, Gradišek A, Kurko SV, Mitrić M, Umićević A, Radaković J, Batalović K. Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study. International Journal of Hydrogen Energy. 2021;46(24):13070-13081
Dragojlović Milijana, Milanović Igor, Gradišek Anton, Kurko Sandra V., Mitrić Miodrag, Umićević Ana, Radaković Jana, Batalović Katarina, "Mechanochemical modification of LiAlH4 with Fe2O3 - A combined DFT and experimental study" International Journal of Hydrogen Energy, 46, no. 24 (2021):13070-13081,
https://doi.org/10.1016/j.ijhydene.2021.01.086 .

Beam Steering Efficiency in Resonant Reflective Metasurfaces

Isić, Goran; Zografopoulos, Dimitrios C.; Stojanović, Danka; Vasić, Borislav Z.; Belić, Milivoj R.

(2021)

TY  - JOUR
AU  - Isić, Goran
AU  - Zografopoulos, Dimitrios C.
AU  - Stojanović, Danka
AU  - Vasić, Borislav Z.
AU  - Belić, Milivoj R.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9071
AB  - Beam steering is one of the prevailing functions performed by electromagnetic metasurfaces. Its efficiency depends on a large number of physical parameters associated with resonant elements comprising the metasurface and is thus notoriously difficult to optimize. Here we formulate a theoretical model for evaluating the diffraction efficiency of an array of lossy resonant elements whose spectral response is dominated by the coupling between a leaky eigenmode and a single incoming/outgoing channel. We use it to deduce a formula for the maximum attainable diffraction efficiency and the gradient parameter profile for which it is achieved. The optimization procedure is demonstrated on the example of an electrically tunable liquid-crystal terahertz beam steering metasurface. Finally, the proposed model is benchmarked against rigorous metasurface simulations. © 1995-2012 IEEE.
T2  - IEEE Journal of Selected Topics in Quantum Electronics
T1  - Beam Steering Efficiency in Resonant Reflective Metasurfaces
VL  - 27
IS  - 1
SP  - 9130831
DO  - 10.1109/JSTQE.2020.3006368
ER  - 
@article{
author = "Isić, Goran and Zografopoulos, Dimitrios C. and Stojanović, Danka and Vasić, Borislav Z. and Belić, Milivoj R.",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9071",
abstract = "Beam steering is one of the prevailing functions performed by electromagnetic metasurfaces. Its efficiency depends on a large number of physical parameters associated with resonant elements comprising the metasurface and is thus notoriously difficult to optimize. Here we formulate a theoretical model for evaluating the diffraction efficiency of an array of lossy resonant elements whose spectral response is dominated by the coupling between a leaky eigenmode and a single incoming/outgoing channel. We use it to deduce a formula for the maximum attainable diffraction efficiency and the gradient parameter profile for which it is achieved. The optimization procedure is demonstrated on the example of an electrically tunable liquid-crystal terahertz beam steering metasurface. Finally, the proposed model is benchmarked against rigorous metasurface simulations. © 1995-2012 IEEE.",
journal = "IEEE Journal of Selected Topics in Quantum Electronics",
title = "Beam Steering Efficiency in Resonant Reflective Metasurfaces",
volume = "27",
number = "1",
pages = "9130831",
doi = "10.1109/JSTQE.2020.3006368"
}
Isić, G., Zografopoulos, D. C., Stojanović, D., Vasić, B. Z.,& Belić, M. R. (2021). Beam Steering Efficiency in Resonant Reflective Metasurfaces.
IEEE Journal of Selected Topics in Quantum Electronics, 27(1), 9130831.
https://doi.org/10.1109/JSTQE.2020.3006368
Isić G, Zografopoulos DC, Stojanović D, Vasić BZ, Belić MR. Beam Steering Efficiency in Resonant Reflective Metasurfaces. IEEE Journal of Selected Topics in Quantum Electronics. 2021;27(1):9130831
Isić Goran, Zografopoulos Dimitrios C., Stojanović Danka, Vasić Borislav Z., Belić Milivoj R., "Beam Steering Efficiency in Resonant Reflective Metasurfaces" IEEE Journal of Selected Topics in Quantum Electronics, 27, no. 1 (2021):9130831,
https://doi.org/10.1109/JSTQE.2020.3006368 .
1

Multiwalled carbon nanotubes modified with MoO2 nanoparticles for voltammetric determination of the pesticide oxyfluorfen

Milićević, Jelena S.; Ranđelović, Marjan S.; Momčilović, Milan Z.; Zarubica, Aleksandra R.; Mofarah, Sajjad S.; Matović, Branko; Sorrel, Charles C.

(2020)

TY  - JOUR
AU  - Milićević, Jelena S.
AU  - Ranđelović, Marjan S.
AU  - Momčilović, Milan Z.
AU  - Zarubica, Aleksandra R.
AU  - Mofarah, Sajjad S.
AU  - Matović, Branko
AU  - Sorrel, Charles C.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9068
AB  - A glassy carbon electrode was functionalized by MoO2 nanoparticle–decorated multiwalled carbon nanotubes (MWCNTs) and examined as a working electrode in oxyfluorfen (OXY) detection by differential pulse stripping voltammetry (DPSV). Measurement parameters were as follows: initial potential − 0.1 V, end potential + 0.5 V, accumulation potential − 0.15 V, accumulation time 80 s, and scan rate 50 mV s−1. A stripping potential of + 0.315 V vs. Ag/AgCl was employed. The pPesticide oxyfluorfen was determined in model samples by DPSV with good reproducibility (RSD <2.4%) in the concentration range 2.5 to 34.5 ng mL−1, with r = 0.99 and a limit of detection of 1.5 ng mL−1. These results are in the same range as those of HPLC/DAD, which is used as the comparative method. Recovery for OXY determination in a real river water sample was 102%. Analyses in Briton-Robinson buffer has shown to be pH dependent with the best response at pH 6.0. Structural characterization of MoO2-MWCNT by Raman spectroscopy, field emission scanning electron microscopy, high-resolution transmission electron microscopy, and X-ray crystallography revealed a preserved MWCNT structure decorated with firmly attached clusters of MoO2 nanoparticles.
T2  - Microchimica Acta
T1  - Multiwalled carbon nanotubes modified with MoO2 nanoparticles for voltammetric determination of the pesticide oxyfluorfen
VL  - 187
IS  - 8
SP  - 429
DO  - 10.1007/s00604-020-04406-4
ER  - 
@article{
author = "Milićević, Jelena S. and Ranđelović, Marjan S. and Momčilović, Milan Z. and Zarubica, Aleksandra R. and Mofarah, Sajjad S. and Matović, Branko and Sorrel, Charles C.",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9068",
abstract = "A glassy carbon electrode was functionalized by MoO2 nanoparticle–decorated multiwalled carbon nanotubes (MWCNTs) and examined as a working electrode in oxyfluorfen (OXY) detection by differential pulse stripping voltammetry (DPSV). Measurement parameters were as follows: initial potential − 0.1 V, end potential + 0.5 V, accumulation potential − 0.15 V, accumulation time 80 s, and scan rate 50 mV s−1. A stripping potential of + 0.315 V vs. Ag/AgCl was employed. The pPesticide oxyfluorfen was determined in model samples by DPSV with good reproducibility (RSD <2.4%) in the concentration range 2.5 to 34.5 ng mL−1, with r = 0.99 and a limit of detection of 1.5 ng mL−1. These results are in the same range as those of HPLC/DAD, which is used as the comparative method. Recovery for OXY determination in a real river water sample was 102%. Analyses in Briton-Robinson buffer has shown to be pH dependent with the best response at pH 6.0. Structural characterization of MoO2-MWCNT by Raman spectroscopy, field emission scanning electron microscopy, high-resolution transmission electron microscopy, and X-ray crystallography revealed a preserved MWCNT structure decorated with firmly attached clusters of MoO2 nanoparticles.",
journal = "Microchimica Acta",
title = "Multiwalled carbon nanotubes modified with MoO2 nanoparticles for voltammetric determination of the pesticide oxyfluorfen",
volume = "187",
number = "8",
pages = "429",
doi = "10.1007/s00604-020-04406-4"
}
Milićević, J. S., Ranđelović, M. S., Momčilović, M. Z., Zarubica, A. R., Mofarah, S. S., Matović, B.,& Sorrel, C. C. (2020). Multiwalled carbon nanotubes modified with MoO2 nanoparticles for voltammetric determination of the pesticide oxyfluorfen.
Microchimica Acta, 187(8), 429.
https://doi.org/10.1007/s00604-020-04406-4
Milićević JS, Ranđelović MS, Momčilović MZ, Zarubica AR, Mofarah SS, Matović B, Sorrel CC. Multiwalled carbon nanotubes modified with MoO2 nanoparticles for voltammetric determination of the pesticide oxyfluorfen. Microchimica Acta. 2020;187(8):429
Milićević Jelena S., Ranđelović Marjan S., Momčilović Milan Z., Zarubica Aleksandra R., Mofarah Sajjad S., Matović Branko, Sorrel Charles C., "Multiwalled carbon nanotubes modified with MoO2 nanoparticles for voltammetric determination of the pesticide oxyfluorfen" Microchimica Acta, 187, no. 8 (2020):429,
https://doi.org/10.1007/s00604-020-04406-4 .

Visible-light-responsive Al2O3 powder: Photocatalytic study

Zarubica, Aleksandra; Ljupković, Radomir; Papan, Jelena; Vukoje, Ivana D.; Porobić, Slavica; Ahrenkiel, Scott Phillip; Nedeljković, Jovan

(2020)

TY  - JOUR
AU  - Zarubica, Aleksandra
AU  - Ljupković, Radomir
AU  - Papan, Jelena
AU  - Vukoje, Ivana D.
AU  - Porobić, Slavica
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9003
AB  - A visible-light-responsive hybrid material was prepared by surface-modification of γ-Al2O3, an insulator with a bandgap of about 8.7 eV, with 5-aminosalicylic acid (5-ASA), leading to the formation of an interfacial charge transfer (ICT) complex. The microstructural characterization of pristine γ-Al2O3 includes X-ray diffraction analysis, transmission electron microscopy, and nitrogen adsorption-desorption isotherms. The pristine γ-Al2O3 powder consists of agglomerated rod-like nanoparticles ((2-3) × (15-20) nm, diameter × length) with the large specific surface area (~420 m2/g). An enormous absorption red-shift is observed upon the formation of the ICT complex. The absorption onset of the inorganic-organic hybrid was found to be at 730 nm by diffuse reflection spectroscopy. The photocatalytic performance of prepared samples was thoroughly tested using the decolorization of the organic dye crystal violet (CV) under illumination in different spectral regions and different light intensities. Excitation with UV light leads to complete decolorization of CV, while the degradation kinetics are impeded when a visible light source is used. Also, the increase of UV light intensity induced significantly faster degradation kinetics of CV, while the degradation rates of CV are quite insensitive to the increase of visible light intensity.
T2  - Optical Materials
T1  - Visible-light-responsive Al2O3 powder: Photocatalytic study
VL  - 106
SP  - 110013
DO  - 10.1016/j.optmat.2020.110013
ER  - 
@article{
author = "Zarubica, Aleksandra and Ljupković, Radomir and Papan, Jelena and Vukoje, Ivana D. and Porobić, Slavica and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9003",
abstract = "A visible-light-responsive hybrid material was prepared by surface-modification of γ-Al2O3, an insulator with a bandgap of about 8.7 eV, with 5-aminosalicylic acid (5-ASA), leading to the formation of an interfacial charge transfer (ICT) complex. The microstructural characterization of pristine γ-Al2O3 includes X-ray diffraction analysis, transmission electron microscopy, and nitrogen adsorption-desorption isotherms. The pristine γ-Al2O3 powder consists of agglomerated rod-like nanoparticles ((2-3) × (15-20) nm, diameter × length) with the large specific surface area (~420 m2/g). An enormous absorption red-shift is observed upon the formation of the ICT complex. The absorption onset of the inorganic-organic hybrid was found to be at 730 nm by diffuse reflection spectroscopy. The photocatalytic performance of prepared samples was thoroughly tested using the decolorization of the organic dye crystal violet (CV) under illumination in different spectral regions and different light intensities. Excitation with UV light leads to complete decolorization of CV, while the degradation kinetics are impeded when a visible light source is used. Also, the increase of UV light intensity induced significantly faster degradation kinetics of CV, while the degradation rates of CV are quite insensitive to the increase of visible light intensity.",
journal = "Optical Materials",
title = "Visible-light-responsive Al2O3 powder: Photocatalytic study",
volume = "106",
pages = "110013",
doi = "10.1016/j.optmat.2020.110013"
}
Zarubica, A., Ljupković, R., Papan, J., Vukoje, I. D., Porobić, S., Ahrenkiel, S. P.,& Nedeljković, J. (2020). Visible-light-responsive Al2O3 powder: Photocatalytic study.
Optical Materials, 106, 110013.
https://doi.org/10.1016/j.optmat.2020.110013
Zarubica A, Ljupković R, Papan J, Vukoje ID, Porobić S, Ahrenkiel SP, Nedeljković J. Visible-light-responsive Al2O3 powder: Photocatalytic study. Optical Materials. 2020;106:110013
Zarubica Aleksandra, Ljupković Radomir, Papan Jelena, Vukoje Ivana D., Porobić Slavica, Ahrenkiel Scott Phillip, Nedeljković Jovan, "Visible-light-responsive Al2O3 powder: Photocatalytic study" Optical Materials, 106 (2020):110013,
https://doi.org/10.1016/j.optmat.2020.110013 .
2
2

Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation

Dimitrijević, Aleksandra; Tavares, Ana Paula M.; Jocić, Ana; Marić, Slađana; Trtić-Petrović, Tatjana M.; Gadžurić, Slobodan; Freire, Mara G.

(2020)

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Tavares, Ana Paula M.
AU  - Jocić, Ana
AU  - Marić, Slađana
AU  - Trtić-Petrović, Tatjana M.
AU  - Gadžurić, Slobodan
AU  - Freire, Mara G.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8995
AB  - Aqueous biphasic systems (ABS) formed by copolymers and ionic liquids (ILs) have demonstrated to be effective separation platforms, but there is still a gap on the complete understanding of the molecular-level mechanisms ruling the two-phase formation for this type of systems. This work addresses the determination of the liquid–liquid equilibrium of ABS composed of cholinium-based salts or cholinium-based ILs and the triblock copolymer Pluronic PE6200 (PL6200). It is demonstrated that PL6200 can form ABS with all investigated cholinium-based salts or ILs, contrarily to most poly(ethylene)glycol polymers, which is due to the presence of hydrophobic propylene oxide (PO) blocks. From the phase diagrams behavior and IL/salt anions properties, it is shown that the formation of ABS with cholinium-based salts is ruled by the anions polar surface and ability to be hydrated, whereas in systems comprising ILs van der Waals interactions between the copolymer and the IL cannot be discarded. The partition of a series of alkaloids in these systems, namely caffeine, nicotine, theophylline, and theobromine, was additionally appraised. It is shown that caffeine, theophylline, and theobromine preferentially migrate to the more hydrophobic PL6200-rich phase, and that their partition depends on the water content in the respective phase, being ruled by the phases’ hydrophobicity. On the other hand, nicotine, with the most prominent hydrophobic character amongst the studied alkaloids, preferentially migrates to the salt- or IL-rich phase, in which interactions occurring between this alkaloid and the IL/salt cannot be discarded. The ABS formed by cholinium dihydrogenphosphate is the most selective system identified to separate nicotine from the remaining alkaloids, giving some insights into their investigation as separation platforms for alkaloids from natural extracts.
T2  - Separation and Purification Technology
T1  - Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation
VL  - 248
SP  - 117050
DO  - 10.1016/j.seppur.2020.117050
ER  - 
@article{
author = "Dimitrijević, Aleksandra and Tavares, Ana Paula M. and Jocić, Ana and Marić, Slađana and Trtić-Petrović, Tatjana M. and Gadžurić, Slobodan and Freire, Mara G.",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8995",
abstract = "Aqueous biphasic systems (ABS) formed by copolymers and ionic liquids (ILs) have demonstrated to be effective separation platforms, but there is still a gap on the complete understanding of the molecular-level mechanisms ruling the two-phase formation for this type of systems. This work addresses the determination of the liquid–liquid equilibrium of ABS composed of cholinium-based salts or cholinium-based ILs and the triblock copolymer Pluronic PE6200 (PL6200). It is demonstrated that PL6200 can form ABS with all investigated cholinium-based salts or ILs, contrarily to most poly(ethylene)glycol polymers, which is due to the presence of hydrophobic propylene oxide (PO) blocks. From the phase diagrams behavior and IL/salt anions properties, it is shown that the formation of ABS with cholinium-based salts is ruled by the anions polar surface and ability to be hydrated, whereas in systems comprising ILs van der Waals interactions between the copolymer and the IL cannot be discarded. The partition of a series of alkaloids in these systems, namely caffeine, nicotine, theophylline, and theobromine, was additionally appraised. It is shown that caffeine, theophylline, and theobromine preferentially migrate to the more hydrophobic PL6200-rich phase, and that their partition depends on the water content in the respective phase, being ruled by the phases’ hydrophobicity. On the other hand, nicotine, with the most prominent hydrophobic character amongst the studied alkaloids, preferentially migrates to the salt- or IL-rich phase, in which interactions occurring between this alkaloid and the IL/salt cannot be discarded. The ABS formed by cholinium dihydrogenphosphate is the most selective system identified to separate nicotine from the remaining alkaloids, giving some insights into their investigation as separation platforms for alkaloids from natural extracts.",
journal = "Separation and Purification Technology",
title = "Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation",
volume = "248",
pages = "117050",
doi = "10.1016/j.seppur.2020.117050"
}
Dimitrijević, A., Tavares, A. P. M., Jocić, A., Marić, S., Trtić-Petrović, T. M., Gadžurić, S.,& Freire, M. G. (2020). Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation.
Separation and Purification Technology, 248, 117050.
https://doi.org/10.1016/j.seppur.2020.117050
Dimitrijević A, Tavares APM, Jocić A, Marić S, Trtić-Petrović TM, Gadžurić S, Freire MG. Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation. Separation and Purification Technology. 2020;248:117050
Dimitrijević Aleksandra, Tavares Ana Paula M., Jocić Ana, Marić Slađana, Trtić-Petrović Tatjana M., Gadžurić Slobodan, Freire Mara G., "Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation" Separation and Purification Technology, 248 (2020):117050,
https://doi.org/10.1016/j.seppur.2020.117050 .
1
3
1
3

Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution

Ranđelović, Dragana; Jakovljević, Ksenija; Mišljenović, Tomica; Savović, Jelena; Kuzmanović, Miroslav M.; Mihailović, Nevena; Jovanović, Slobodan

(2020)

TY  - JOUR
AU  - Ranđelović, Dragana
AU  - Jakovljević, Ksenija
AU  - Mišljenović, Tomica
AU  - Savović, Jelena
AU  - Kuzmanović, Miroslav M.
AU  - Mihailović, Nevena
AU  - Jovanović, Slobodan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9014
AB  - This study investigated invasive Ambrosia artemisiifolia from five localities with different levels of anthropogenic pollution in order to determine the potential for accumulation of trace metals and metaloids. Physical characteristics of the soil are presented, together with concentrations of As, B, Ba, Ca, Cd, Co, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Sb, Sr, and Zn in both plant and soil. The tested samples displayed considerable differences in element concentrations, depending on the level of anthropogenic activities, with the highest concentrations of elements observed in samples from Stolice and Piskanja, the sites with most intensive human influence. A trend of shoot accumulation can be observed in A. artemisiifolia, but without hyperaccumulation, along with lower root concentrations in almost all analyzed samples. This may pose an additional environmental risk, as accumulated elements can spread to other components of the ecosystem. While A. artemisiifolia acumulates a high and even toxic rate of B in shoots regardless of boron concentration in soil, there is a high correlation of Ba, Pb, and Zn concentrations in species shoots with their respective concentration in the soil. Successful colonization of both natural and anthropogenically polluted habitats indicates high tolerance of A. artemisiifolia, which complements its wide environmental amplitude.
T2  - Water, Air, & Soil Pollution
T1  - Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution
VL  - 231
IS  - 6
SP  - 272
DO  - 10.1007/s11270-020-04655-2
ER  - 
@article{
author = "Ranđelović, Dragana and Jakovljević, Ksenija and Mišljenović, Tomica and Savović, Jelena and Kuzmanović, Miroslav M. and Mihailović, Nevena and Jovanović, Slobodan",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9014",
abstract = "This study investigated invasive Ambrosia artemisiifolia from five localities with different levels of anthropogenic pollution in order to determine the potential for accumulation of trace metals and metaloids. Physical characteristics of the soil are presented, together with concentrations of As, B, Ba, Ca, Cd, Co, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Sb, Sr, and Zn in both plant and soil. The tested samples displayed considerable differences in element concentrations, depending on the level of anthropogenic activities, with the highest concentrations of elements observed in samples from Stolice and Piskanja, the sites with most intensive human influence. A trend of shoot accumulation can be observed in A. artemisiifolia, but without hyperaccumulation, along with lower root concentrations in almost all analyzed samples. This may pose an additional environmental risk, as accumulated elements can spread to other components of the ecosystem. While A. artemisiifolia acumulates a high and even toxic rate of B in shoots regardless of boron concentration in soil, there is a high correlation of Ba, Pb, and Zn concentrations in species shoots with their respective concentration in the soil. Successful colonization of both natural and anthropogenically polluted habitats indicates high tolerance of A. artemisiifolia, which complements its wide environmental amplitude.",
journal = "Water, Air, & Soil Pollution",
title = "Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution",
volume = "231",
number = "6",
pages = "272",
doi = "10.1007/s11270-020-04655-2"
}
Ranđelović, D., Jakovljević, K., Mišljenović, T., Savović, J., Kuzmanović, M. M., Mihailović, N.,& Jovanović, S. (2020). Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution.
Water, Air, & Soil Pollution, 231(6), 272.
https://doi.org/10.1007/s11270-020-04655-2
Ranđelović D, Jakovljević K, Mišljenović T, Savović J, Kuzmanović MM, Mihailović N, Jovanović S. Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution. Water, Air, & Soil Pollution. 2020;231(6):272
Ranđelović Dragana, Jakovljević Ksenija, Mišljenović Tomica, Savović Jelena, Kuzmanović Miroslav M., Mihailović Nevena, Jovanović Slobodan, "Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution" Water, Air, & Soil Pollution, 231, no. 6 (2020):272,
https://doi.org/10.1007/s11270-020-04655-2 .

Aminosilanized flower-structured superparamagnetic iron oxide nanoparticles coupled to 131I-labeled CC49 antibody for combined radionuclide and hyperthermia therapy of cancer

Stanković, Aljoša; Mihailović, Jasna; Mirković, Marija D.; Radović, Magdalena; Milanović, Zorana; Ognjanović, Miloš; Janković, Drina; Antić, Bratislav; Mijović, Milica; Vranješ-Đurić, Sanja; Prijović, Željko

(2020)

TY  - JOUR
AU  - Stanković, Aljoša
AU  - Mihailović, Jasna
AU  - Mirković, Marija D.
AU  - Radović, Magdalena
AU  - Milanović, Zorana
AU  - Ognjanović, Miloš
AU  - Janković, Drina
AU  - Antić, Bratislav
AU  - Mijović, Milica
AU  - Vranješ-Đurić, Sanja
AU  - Prijović, Željko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9117
AB  - Combined radionuclide therapy with magnetic nanoparticles-mediated hyperthermia has been under research focus as a promising tumor therapy approach. The objective of this study was to investigate the potential of 131I-radiolabeled superparamagnetic iron oxide nanoparticles (SPIONs) prepared as the ~40 nm flower-shaped structures with excellent heating efficiency (specific absorption rate at H0 = 15.9 kA∙m−1 and resonant frequency of 252 kHz was 123.1 W∙g−1) for nano-brachytherapy of tumors. 131I-radiolabeled CC49 antibody attached to SPIONs via reactive groups of 3-aminopropyltriethoxysilane (APTES) provided specificity and long-lasting localized retention after their intratumoral application into LS174T human colon adenocarcinoma xenografts in NOD-SCID mice. The results demonstrate feasibility and effectiveness of magnetic hyperthermia (HT), radionuclide therapy (RT) and their combination (HT + RT) in treating cancer in xenograft models. Combined therapy approach induced a significant (p < 0.01) tumor growth suppression in comparison to untreated groups presented by the tumor volume inhibitory rate (TVIR): 54.38%, 68.77%, 73.00% for HT, RT and HT + RT, respectively in comparison to untreated group and 48.31%, 64,62% and 69,41%, respectively, for the SPIONs-only injected group. Histopathology analysis proved the necrosis and apoptosis in treated tumors without general toxicity. Obtained data support the idea that nano-brachytherapy combined with hyperthermia is a promising approach for effective cancer treatment.
T2  - International Journal of Pharmaceutics
T1  - Aminosilanized flower-structured superparamagnetic iron oxide nanoparticles coupled to 131I-labeled CC49 antibody for combined radionuclide and hyperthermia therapy of cancer
VL  - 587
SP  - 119628
DO  - 10.1016/j.ijpharm.2020.119628
ER  - 
@article{
author = "Stanković, Aljoša and Mihailović, Jasna and Mirković, Marija D. and Radović, Magdalena and Milanović, Zorana and Ognjanović, Miloš and Janković, Drina and Antić, Bratislav and Mijović, Milica and Vranješ-Đurić, Sanja and Prijović, Željko",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9117",
abstract = "Combined radionuclide therapy with magnetic nanoparticles-mediated hyperthermia has been under research focus as a promising tumor therapy approach. The objective of this study was to investigate the potential of 131I-radiolabeled superparamagnetic iron oxide nanoparticles (SPIONs) prepared as the ~40 nm flower-shaped structures with excellent heating efficiency (specific absorption rate at H0 = 15.9 kA∙m−1 and resonant frequency of 252 kHz was 123.1 W∙g−1) for nano-brachytherapy of tumors. 131I-radiolabeled CC49 antibody attached to SPIONs via reactive groups of 3-aminopropyltriethoxysilane (APTES) provided specificity and long-lasting localized retention after their intratumoral application into LS174T human colon adenocarcinoma xenografts in NOD-SCID mice. The results demonstrate feasibility and effectiveness of magnetic hyperthermia (HT), radionuclide therapy (RT) and their combination (HT + RT) in treating cancer in xenograft models. Combined therapy approach induced a significant (p < 0.01) tumor growth suppression in comparison to untreated groups presented by the tumor volume inhibitory rate (TVIR): 54.38%, 68.77%, 73.00% for HT, RT and HT + RT, respectively in comparison to untreated group and 48.31%, 64,62% and 69,41%, respectively, for the SPIONs-only injected group. Histopathology analysis proved the necrosis and apoptosis in treated tumors without general toxicity. Obtained data support the idea that nano-brachytherapy combined with hyperthermia is a promising approach for effective cancer treatment.",
journal = "International Journal of Pharmaceutics",
title = "Aminosilanized flower-structured superparamagnetic iron oxide nanoparticles coupled to 131I-labeled CC49 antibody for combined radionuclide and hyperthermia therapy of cancer",
volume = "587",
pages = "119628",
doi = "10.1016/j.ijpharm.2020.119628"
}
Stanković, A., Mihailović, J., Mirković, M. D., Radović, M., Milanović, Z., Ognjanović, M., Janković, D., Antić, B., Mijović, M., Vranješ-Đurić, S.,& Prijović, Ž. (2020). Aminosilanized flower-structured superparamagnetic iron oxide nanoparticles coupled to 131I-labeled CC49 antibody for combined radionuclide and hyperthermia therapy of cancer.
International Journal of Pharmaceutics, 587, 119628.
https://doi.org/10.1016/j.ijpharm.2020.119628
Stanković A, Mihailović J, Mirković MD, Radović M, Milanović Z, Ognjanović M, Janković D, Antić B, Mijović M, Vranješ-Đurić S, Prijović Ž. Aminosilanized flower-structured superparamagnetic iron oxide nanoparticles coupled to 131I-labeled CC49 antibody for combined radionuclide and hyperthermia therapy of cancer. International Journal of Pharmaceutics. 2020;587:119628
Stanković Aljoša, Mihailović Jasna, Mirković Marija D., Radović Magdalena, Milanović Zorana, Ognjanović Miloš, Janković Drina, Antić Bratislav, Mijović Milica, Vranješ-Đurić Sanja, Prijović Željko, "Aminosilanized flower-structured superparamagnetic iron oxide nanoparticles coupled to 131I-labeled CC49 antibody for combined radionuclide and hyperthermia therapy of cancer" International Journal of Pharmaceutics, 587 (2020):119628,
https://doi.org/10.1016/j.ijpharm.2020.119628 .
6
5

Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance

Brković, Snežana M.; Marčeta Kaninski, Milica; Laušević, Petar; Šaponjić, Aleksandra; Radulović, Aleksandra; Rakić, Aleksandra A.; Pašti, Igor A.; Nikolić, Vladimir М.

(2020)

TY  - JOUR
AU  - Brković, Snežana M.
AU  - Marčeta Kaninski, Milica
AU  - Laušević, Petar
AU  - Šaponjić, Aleksandra
AU  - Radulović, Aleksandra
AU  - Rakić, Aleksandra A.
AU  - Pašti, Igor A.
AU  - Nikolić, Vladimir М.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8927
AB  - Durability and cost of Proton Exchange Membrane fuel cells (PEMFCs) are two major factors delaying their commercialization. Cost is associated with the price of the catalysts, while durability is associated with degradation and poisoning of the catalysts, primarily by CO. This motivated us to develop tungsten-carbide-oxide (WxCyOz) as a new non-carbon based catalyst support for Pt–Ru–based anode PEMFC catalyst. The aim was to improve performance and obtain higher CO tolerance compared to commercial catalysts. The performance of obtained PtRu/WxCyOz catalysts was investigated using cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry. Particular attention was given to the analysis of CO poisoning, to better understand how WxCyOz species can contribute to the CO tolerance of PtRu/WxCyOz. Improved oxidation of COads at low potentials (E < 0.5 V vs. RHE) was ascribed to OH provided by the oxide phase at the interfacial region between the support and the PtRu particles. On the other hand, at high potentials (E > 0.5 V vs. RHE) CO removal proceeds dominantly via OH provided from the oxidized metal sites. The obtained catalyst with the best performance (30% PtRu/WxCyOz) was tested as an anode catalyst in PEM fuel cell. When using synthetic reformate as a fuel in PEMFC, there is a significant power drop of 35.3 % for the commercial 30% PtRu/C catalyst, while for the PtRu/WxCyOz anode catalyst this drop is around 16 %.
T2  - International Journal of Hydrogen Energy
T1  - Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance
VL  - 45
IS  - 27
SP  - 13929
EP  - 13938
DO  - 10.1016/j.ijhydene.2020.03.086
ER  - 
@article{
author = "Brković, Snežana M. and Marčeta Kaninski, Milica and Laušević, Petar and Šaponjić, Aleksandra and Radulović, Aleksandra and Rakić, Aleksandra A. and Pašti, Igor A. and Nikolić, Vladimir М.",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8927",
abstract = "Durability and cost of Proton Exchange Membrane fuel cells (PEMFCs) are two major factors delaying their commercialization. Cost is associated with the price of the catalysts, while durability is associated with degradation and poisoning of the catalysts, primarily by CO. This motivated us to develop tungsten-carbide-oxide (WxCyOz) as a new non-carbon based catalyst support for Pt–Ru–based anode PEMFC catalyst. The aim was to improve performance and obtain higher CO tolerance compared to commercial catalysts. The performance of obtained PtRu/WxCyOz catalysts was investigated using cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry. Particular attention was given to the analysis of CO poisoning, to better understand how WxCyOz species can contribute to the CO tolerance of PtRu/WxCyOz. Improved oxidation of COads at low potentials (E < 0.5 V vs. RHE) was ascribed to OH provided by the oxide phase at the interfacial region between the support and the PtRu particles. On the other hand, at high potentials (E > 0.5 V vs. RHE) CO removal proceeds dominantly via OH provided from the oxidized metal sites. The obtained catalyst with the best performance (30% PtRu/WxCyOz) was tested as an anode catalyst in PEM fuel cell. When using synthetic reformate as a fuel in PEMFC, there is a significant power drop of 35.3 % for the commercial 30% PtRu/C catalyst, while for the PtRu/WxCyOz anode catalyst this drop is around 16 %.",
journal = "International Journal of Hydrogen Energy",
title = "Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance",
volume = "45",
number = "27",
pages = "13929-13938",
doi = "10.1016/j.ijhydene.2020.03.086"
}
Brković, S. M., Marčeta Kaninski, M., Laušević, P., Šaponjić, A., Radulović, A., Rakić, A. A., Pašti, I. A.,& Nikolić, V. М. (2020). Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance.
International Journal of Hydrogen Energy, 45(27), 13929-13938.
https://doi.org/10.1016/j.ijhydene.2020.03.086
Brković SM, Marčeta Kaninski M, Laušević P, Šaponjić A, Radulović A, Rakić AA, Pašti IA, Nikolić VМ. Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance. International Journal of Hydrogen Energy. 2020;45(27):13929-13938
Brković Snežana M., Marčeta Kaninski Milica, Laušević Petar, Šaponjić Aleksandra, Radulović Aleksandra, Rakić Aleksandra A., Pašti Igor A., Nikolić Vladimir М., "Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance" International Journal of Hydrogen Energy, 45, no. 27 (2020):13929-13938,
https://doi.org/10.1016/j.ijhydene.2020.03.086 .
3
1
3

Crystal structure of ethyl 3-(trifluoromethyl)-1H-pyrazole-4-carboxylate, C7H7F3N2O2

Jaćimović, Željko. K; Novaković, Slađana B.; Bogdanović, Goran A.; Kosović, Milica; Libowitzky, Eugen; Giester, Gerald

(2020)

TY  - JOUR
AU  - Jaćimović, Željko. K
AU  - Novaković, Slađana B.
AU  - Bogdanović, Goran A.
AU  - Kosović, Milica
AU  - Libowitzky, Eugen
AU  - Giester, Gerald
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9065
AB  - C7H7F3N2O2, monoclinic, P21/m (no. 11), a = 6.8088(8) Å, b = 6.7699(9) Å, c = 9.9351(12) Å, β = 105.416(3)°, V = 441.48(9) Å 3 , Z = 2, R gt ( F ) = 0.0398, wR ref ( F 2 ) = 0.1192, T = 200(2) K.
T2  - Zeitschrift für Kristallographie - New Crystal Structures
T1  - Crystal structure of ethyl 3-(trifluoromethyl)-1H-pyrazole-4-carboxylate, C7H7F3N2O2
VL  - 235
IS  - 5
SP  - 1189
EP  - 1190
DO  - 10.1515/ncrs-2020-0242
ER  - 
@article{
author = "Jaćimović, Željko. K and Novaković, Slađana B. and Bogdanović, Goran A. and Kosović, Milica and Libowitzky, Eugen and Giester, Gerald",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9065",
abstract = "C7H7F3N2O2, monoclinic, P21/m (no. 11), a = 6.8088(8) Å, b = 6.7699(9) Å, c = 9.9351(12) Å, β = 105.416(3)°, V = 441.48(9) Å 3 , Z = 2, R gt ( F ) = 0.0398, wR ref ( F 2 ) = 0.1192, T = 200(2) K.",
journal = "Zeitschrift für Kristallographie - New Crystal Structures",
title = "Crystal structure of ethyl 3-(trifluoromethyl)-1H-pyrazole-4-carboxylate, C7H7F3N2O2",
volume = "235",
number = "5",
pages = "1189-1190",
doi = "10.1515/ncrs-2020-0242"
}
Jaćimović, Željko. K., Novaković, S. B., Bogdanović, G. A., Kosović, M., Libowitzky, E.,& Giester, G. (2020). Crystal structure of ethyl 3-(trifluoromethyl)-1H-pyrazole-4-carboxylate, C7H7F3N2O2.
Zeitschrift für Kristallographie - New Crystal Structures, 235(5), 1189-1190.
https://doi.org/10.1515/ncrs-2020-0242
Jaćimović ŽK, Novaković SB, Bogdanović GA, Kosović M, Libowitzky E, Giester G. Crystal structure of ethyl 3-(trifluoromethyl)-1H-pyrazole-4-carboxylate, C7H7F3N2O2. Zeitschrift für Kristallographie - New Crystal Structures. 2020;235(5):1189-1190
Jaćimović Željko. K, Novaković Slađana B., Bogdanović Goran A., Kosović Milica, Libowitzky Eugen, Giester Gerald, "Crystal structure of ethyl 3-(trifluoromethyl)-1H-pyrazole-4-carboxylate, C7H7F3N2O2" Zeitschrift für Kristallographie - New Crystal Structures, 235, no. 5 (2020):1189-1190,
https://doi.org/10.1515/ncrs-2020-0242 .

Heat capacity of 1-hexadecyl-3-methylimidazolium based ionic liquids in solid and liquid phase

Bendova, Magdalena; Wagner, Zdenek; Bogdanov, Milen G.; Čanji, Maja; Zdolšek, Nikola

(2020)

TY  - JOUR
AU  - Bendova, Magdalena
AU  - Wagner, Zdenek
AU  - Bogdanov, Milen G.
AU  - Čanji, Maja
AU  - Zdolšek, Nikola
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8859
AB  - In this work, two ionic liquids with a 1-hexadecyl-3-methylimidazolium cation were synthesized with different anions; chloride and saccharinate, respectively, both of them showing melting points above room temperature, ranging between (324.15 and 338.15) K and enthalpies of fusion close to or higher than 100 J/g, making them potentially suitable phase-change materials (PCMs) for latent heat storage. This application potential can be enhanced by a suitably large heat capacity and thermal conductivity of the material both in the liquid and solid phase. Heat capacity was therefore measured in this work as a function of temperature using the differential scanning calorimetry (DSC) to determine how it is affected by the anion structure. Care has been taken to evaluate the influence of the phase change on the measured data. The experimental data have then been analyzed by means of methods based on mathematical gnostics (MG). As a non-statistical approach towards data uncertainty, MG enabled us to analyze the underlying phenomena that affect the value of the experimental heat capacity. © 2020 Elsevier B.V.
T2  - Journal of Molecular Liquids
T1  - Heat capacity of 1-hexadecyl-3-methylimidazolium based ionic liquids in solid and liquid phase
VL  - 305
SP  - 112847
DO  - 10.1016/j.molliq.2020.112847
ER  - 
@article{
author = "Bendova, Magdalena and Wagner, Zdenek and Bogdanov, Milen G. and Čanji, Maja and Zdolšek, Nikola",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8859",
abstract = "In this work, two ionic liquids with a 1-hexadecyl-3-methylimidazolium cation were synthesized with different anions; chloride and saccharinate, respectively, both of them showing melting points above room temperature, ranging between (324.15 and 338.15) K and enthalpies of fusion close to or higher than 100 J/g, making them potentially suitable phase-change materials (PCMs) for latent heat storage. This application potential can be enhanced by a suitably large heat capacity and thermal conductivity of the material both in the liquid and solid phase. Heat capacity was therefore measured in this work as a function of temperature using the differential scanning calorimetry (DSC) to determine how it is affected by the anion structure. Care has been taken to evaluate the influence of the phase change on the measured data. The experimental data have then been analyzed by means of methods based on mathematical gnostics (MG). As a non-statistical approach towards data uncertainty, MG enabled us to analyze the underlying phenomena that affect the value of the experimental heat capacity. © 2020 Elsevier B.V.",
journal = "Journal of Molecular Liquids",
title = "Heat capacity of 1-hexadecyl-3-methylimidazolium based ionic liquids in solid and liquid phase",
volume = "305",
pages = "112847",
doi = "10.1016/j.molliq.2020.112847"
}
Bendova, M., Wagner, Z., Bogdanov, M. G., Čanji, M.,& Zdolšek, N. (2020). Heat capacity of 1-hexadecyl-3-methylimidazolium based ionic liquids in solid and liquid phase.
Journal of Molecular Liquids, 305, 112847.
https://doi.org/10.1016/j.molliq.2020.112847
Bendova M, Wagner Z, Bogdanov MG, Čanji M, Zdolšek N. Heat capacity of 1-hexadecyl-3-methylimidazolium based ionic liquids in solid and liquid phase. Journal of Molecular Liquids. 2020;305:112847
Bendova Magdalena, Wagner Zdenek, Bogdanov Milen G., Čanji Maja, Zdolšek Nikola, "Heat capacity of 1-hexadecyl-3-methylimidazolium based ionic liquids in solid and liquid phase" Journal of Molecular Liquids, 305 (2020):112847,
https://doi.org/10.1016/j.molliq.2020.112847 .
4
2

Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal

Buha Marković, Jovana; Marinković, Ana D.; Nemoda, Stevan; Savić, Jasmina

(2020)

TY  - JOUR
AU  - Buha Marković, Jovana
AU  - Marinković, Ana D.
AU  - Nemoda, Stevan
AU  - Savić, Jasmina
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9124
AB  - The comparison of fly ash generated from lignite combustion in a thermal power plant Kolubara A (Veliki Crljeni) and bottom and fly ash from coal waste combustion in a semi-industrial fluidized bed boiler (Vinča) was performed as the function of particle size. The average total concentrations of the 16 EPA priority PAHs in ash fractions are 0.49 mg kg−1 of ash (thermal power plant) and 17.48 mg kg−1 of ash (fluidized bed boiler). The sum of 3- and 4-ring PAHs accounts for more than 93% of overall PAHs concentration, and the most abundant among them is fluoranthene. The portions of PAHs groups defined based on their physico-chemical properties, as obtained from quantitative structure-activity relationship (QSAR) models included in the Vega platform, were determined. These portions, emission factors, and benzo[a]pyrene equivalence concentrations were further on used to estimate the potential environmental impact of ash disposal. The PAHs emission factors are higher compared to values in the air pollutant emission inventory guidebook of the cooperative program for monitoring and evaluation of the long-range transmission of air pollutants in Europe (EMEP/EEA). The overall emission factors of 16 PAHs for combustion of lignite and coal waste are determined to be 0.15 and 249.97 mg kg−1 of fuel, respectively. Based on the ratios of benzo[a]pyrene equivalence concentrations of each ash and correspondent fuel, the disposal of fly ash from the cyclone of fluidized bed boiler represents the highest risk to the environment among tested ashes.
T2  - Environmental Pollution
T1  - Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal
VL  - 266
SP  - 115282
DO  - 10.1016/j.envpol.2020.115282
ER  - 
@article{
author = "Buha Marković, Jovana and Marinković, Ana D. and Nemoda, Stevan and Savić, Jasmina",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9124",
abstract = "The comparison of fly ash generated from lignite combustion in a thermal power plant Kolubara A (Veliki Crljeni) and bottom and fly ash from coal waste combustion in a semi-industrial fluidized bed boiler (Vinča) was performed as the function of particle size. The average total concentrations of the 16 EPA priority PAHs in ash fractions are 0.49 mg kg−1 of ash (thermal power plant) and 17.48 mg kg−1 of ash (fluidized bed boiler). The sum of 3- and 4-ring PAHs accounts for more than 93% of overall PAHs concentration, and the most abundant among them is fluoranthene. The portions of PAHs groups defined based on their physico-chemical properties, as obtained from quantitative structure-activity relationship (QSAR) models included in the Vega platform, were determined. These portions, emission factors, and benzo[a]pyrene equivalence concentrations were further on used to estimate the potential environmental impact of ash disposal. The PAHs emission factors are higher compared to values in the air pollutant emission inventory guidebook of the cooperative program for monitoring and evaluation of the long-range transmission of air pollutants in Europe (EMEP/EEA). The overall emission factors of 16 PAHs for combustion of lignite and coal waste are determined to be 0.15 and 249.97 mg kg−1 of fuel, respectively. Based on the ratios of benzo[a]pyrene equivalence concentrations of each ash and correspondent fuel, the disposal of fly ash from the cyclone of fluidized bed boiler represents the highest risk to the environment among tested ashes.",
journal = "Environmental Pollution",
title = "Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal",
volume = "266",
pages = "115282",
doi = "10.1016/j.envpol.2020.115282"
}
Buha Marković, J., Marinković, A. D., Nemoda, S.,& Savić, J. (2020). Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal.
Environmental Pollution, 266, 115282.
https://doi.org/10.1016/j.envpol.2020.115282
Buha Marković J, Marinković AD, Nemoda S, Savić J. Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal. Environmental Pollution. 2020;266:115282
Buha Marković Jovana, Marinković Ana D., Nemoda Stevan, Savić Jasmina, "Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal" Environmental Pollution, 266 (2020):115282,
https://doi.org/10.1016/j.envpol.2020.115282 .
1
5
3

Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission

Ćirić, Aleksandar; Aleksić, Jelena; Barudžija, Tanja; Antić, Željka; Đorđević, Vesna R.; Medić, Mina M.; Periša, Jovana; Zeković, Ivana Lj.; Mitrić, Miodrag; Dramićanin, Miroslav

(2020)

TY  - JOUR
AU  - Ćirić, Aleksandar
AU  - Aleksić, Jelena
AU  - Barudžija, Tanja
AU  - Antić, Željka
AU  - Đorđević, Vesna R.
AU  - Medić, Mina M.
AU  - Periša, Jovana
AU  - Zeković, Ivana Lj.
AU  - Mitrić, Miodrag
AU  - Dramićanin, Miroslav
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8938
AB  - The emission of Er3+ provides three combinations of emission bands suitable for ratiometric luminescence thermometry. Two combinations utilize ratios of visible emissions (2H11/2→4I15/2 at 523 nm/ 4S3/2→4I15/2 at 542 nm and 4F7/2→4I15/2 at 485 nm/ 4S3/2→4I15/2 at 545 nm), while emissions from the third combination are located in near-infrared, e.g., in the first biological window (2H11/2→4I13/2 at 793 nm/ 4S3/2→4I13/2 at 840 nm). Herein, we aimed to compare thermometric performances of these three different ratiometric readouts on account of their relative sensitivities, resolutions, and repeatability of measurements. For this aim, we prepared Yb3+,Er3+:YF3 nanopowders by oxide fluorination. The structure of the materials was confirmed by X-ray diffraction analysis and particle morphology was evaluated from FE-SEM measurements. Upconversion emission spectra were measured over the 293–473 K range upon excitation by 980 nm radiation. The obtained relative sensitivities on temperature for 523/542, 485/542, and 793/840 emission intensity ratios were 1.06 ± 0.02, 2.03 ± 0.23, and 0.98 ± 0.10%K−1 with temperature resolutions of 0.3, 0.7, and 1.8 K, respectively. The study showed that the higher relative temperature sensitivity does not necessarily lead to the more precise temperature measurement and better resolution, since it may be compromised by a larger uncertainty in measurement of low-intensity emission bands.
T2  - Nanomaterials
T1  - Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission
VL  - 10
IS  - 4
SP  - 627
DO  - 10.3390/nano10040627
ER  - 
@article{
author = "Ćirić, Aleksandar and Aleksić, Jelena and Barudžija, Tanja and Antić, Željka and Đorđević, Vesna R. and Medić, Mina M. and Periša, Jovana and Zeković, Ivana Lj. and Mitrić, Miodrag and Dramićanin, Miroslav",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8938",
abstract = "The emission of Er3+ provides three combinations of emission bands suitable for ratiometric luminescence thermometry. Two combinations utilize ratios of visible emissions (2H11/2→4I15/2 at 523 nm/ 4S3/2→4I15/2 at 542 nm and 4F7/2→4I15/2 at 485 nm/ 4S3/2→4I15/2 at 545 nm), while emissions from the third combination are located in near-infrared, e.g., in the first biological window (2H11/2→4I13/2 at 793 nm/ 4S3/2→4I13/2 at 840 nm). Herein, we aimed to compare thermometric performances of these three different ratiometric readouts on account of their relative sensitivities, resolutions, and repeatability of measurements. For this aim, we prepared Yb3+,Er3+:YF3 nanopowders by oxide fluorination. The structure of the materials was confirmed by X-ray diffraction analysis and particle morphology was evaluated from FE-SEM measurements. Upconversion emission spectra were measured over the 293–473 K range upon excitation by 980 nm radiation. The obtained relative sensitivities on temperature for 523/542, 485/542, and 793/840 emission intensity ratios were 1.06 ± 0.02, 2.03 ± 0.23, and 0.98 ± 0.10%K−1 with temperature resolutions of 0.3, 0.7, and 1.8 K, respectively. The study showed that the higher relative temperature sensitivity does not necessarily lead to the more precise temperature measurement and better resolution, since it may be compromised by a larger uncertainty in measurement of low-intensity emission bands.",
journal = "Nanomaterials",
title = "Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission",
volume = "10",
number = "4",
pages = "627",
doi = "10.3390/nano10040627"
}
Ćirić, A., Aleksić, J., Barudžija, T., Antić, Ž., Đorđević, V. R., Medić, M. M., Periša, J., Zeković, I. Lj., Mitrić, M.,& Dramićanin, M. (2020). Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission.
Nanomaterials, 10(4), 627.
https://doi.org/10.3390/nano10040627
Ćirić A, Aleksić J, Barudžija T, Antić Ž, Đorđević VR, Medić MM, Periša J, Zeković IL, Mitrić M, Dramićanin M. Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission. Nanomaterials. 2020;10(4):627
Ćirić Aleksandar, Aleksić Jelena, Barudžija Tanja, Antić Željka, Đorđević Vesna R., Medić Mina M., Periša Jovana, Zeković Ivana Lj., Mitrić Miodrag, Dramićanin Miroslav, "Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission" Nanomaterials, 10, no. 4 (2020):627,
https://doi.org/10.3390/nano10040627 .
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15