Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200175 (Institute of Technical Sciences of SASA, Belgrade)

Link to this page

info:eu-repo/grantAgreement/MESTD/inst-2020/200175/RS//

Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200175 (Institute of Technical Sciences of SASA, Belgrade) (en)
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-68/2020-14/200175 (Institut tehničkih nauka SANU, Beograd) (sr_RS)
Министарство просвете, науке и технолошког развоја Републике Србије, Уговор бр. 451-03-68/2020-14/200175 (Институт техничких наука САНУ, Београд) (sr)
Authors

Publications

Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode

Milović, Miloš; Vujković, Milica; Jugović, Dragana; Mitrić, Miodrag

(Elsevier BV, 2021)

TY  - JOUR
AU  - Milović, Miloš
AU  - Vujković, Milica
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
PY  - 2021
AB  - Electrochemical and structural properties of LiV2O5 cathode were investigated. Obtained by solid state reaction at high temperature the material crystallized as gamma polymorph phase, γ-LiV2O5. The gamma structure provides two crystallographic sites to accommodate lithium ions, Li1 and Li2 position. Lithium insertion at these two sites occurs at two respective voltages versus lithium metal: ~3.6 V (Li1) and ~2.4 V (Li2). Intercalation at Li1 position is reversible in both organic and aqueous electrolyte and provides stable cycling performance at the high voltage. On the contrary, sluggish insertion/removal of Li+ at Li2 sites causes unstable performance and significant storage capacity fade at lower voltages. Lithium diffusion 3d landscape was determined by bond valence calculations applied on the γ-LiV2O5 phase, as well as on the metastable phases of γ′-V2O5 and ζ-Li2V2O5 that exist at high and low voltages respectively. The model was proposed based on inactivity of Li2 position of the metastable ζ-Li2V2O5 phase which provides explanation for the observed storage capacity loss at low voltages.
PB  - Elsevier BV
T2  - Ceramics International
T1  - Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode
SP  - 17077
EP  - 17083
VL  - 47
IS  - 12
DO  - 10.1016/j.ceramint.2021.03.016
ER  - 
@article{
author = "Milović, Miloš and Vujković, Milica and Jugović, Dragana and Mitrić, Miodrag",
year = "2021",
abstract = "Electrochemical and structural properties of LiV2O5 cathode were investigated. Obtained by solid state reaction at high temperature the material crystallized as gamma polymorph phase, γ-LiV2O5. The gamma structure provides two crystallographic sites to accommodate lithium ions, Li1 and Li2 position. Lithium insertion at these two sites occurs at two respective voltages versus lithium metal: ~3.6 V (Li1) and ~2.4 V (Li2). Intercalation at Li1 position is reversible in both organic and aqueous electrolyte and provides stable cycling performance at the high voltage. On the contrary, sluggish insertion/removal of Li+ at Li2 sites causes unstable performance and significant storage capacity fade at lower voltages. Lithium diffusion 3d landscape was determined by bond valence calculations applied on the γ-LiV2O5 phase, as well as on the metastable phases of γ′-V2O5 and ζ-Li2V2O5 that exist at high and low voltages respectively. The model was proposed based on inactivity of Li2 position of the metastable ζ-Li2V2O5 phase which provides explanation for the observed storage capacity loss at low voltages.",
publisher = "Elsevier BV",
journal = "Ceramics International",
title = "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode",
pages = "17077-17083",
volume = "47",
number = "12",
doi = "10.1016/j.ceramint.2021.03.016"
}
Milović, M., Vujković, M., Jugović, D.,& Mitrić, M. (2021). Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode.
Ceramics International
Elsevier BV., 47(12), 17077-17083.
https://doi.org/10.1016/j.ceramint.2021.03.016
Milović M, Vujković M, Jugović D, Mitrić M. Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode. Ceramics International. 2021;47(12):17077-17083.
doi:10.1016/j.ceramint.2021.03.016.
Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083,
https://doi.org/10.1016/j.ceramint.2021.03.016 .

Supplementary information for the article: Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083, https://doi.org/10.1016/j.ceramint.2021.03.016

Milović, Miloš; Vujković, Milica; Jugović, Dragana; Mitrić, Miodrag

(Elsevier BV, 2021)

TY  - BOOK
AU  - Milović, Miloš
AU  - Vujković, Milica
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
PY  - 2021
AB  - Figure S1. Particle size distribution by number (blue) and by volume (red) of the as prepared powder of LiV2O5; 2. Ex-situ X-ray diffraction analysis; Figure S2. XRD patterns of the as prepared electrode before cycling (black line) and of electrodes in discharged state after cycling in aqueous (red) and in organic electrolyte (blue); a: whole pattern, b: 002 reflection
PB  - Elsevier BV
T2  - Ceramics International
T1  - Supplementary information for the article: Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083, https://doi.org/10.1016/j.ceramint.2021.03.016
VL  - 47
IS  - 12
ER  - 
@book{
author = "Milović, Miloš and Vujković, Milica and Jugović, Dragana and Mitrić, Miodrag",
year = "2021",
abstract = "Figure S1. Particle size distribution by number (blue) and by volume (red) of the as prepared powder of LiV2O5; 2. Ex-situ X-ray diffraction analysis; Figure S2. XRD patterns of the as prepared electrode before cycling (black line) and of electrodes in discharged state after cycling in aqueous (red) and in organic electrolyte (blue); a: whole pattern, b: 002 reflection",
publisher = "Elsevier BV",
journal = "Ceramics International",
title = "Supplementary information for the article: Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083, https://doi.org/10.1016/j.ceramint.2021.03.016",
volume = "47",
number = "12"
}
Milović, M., Vujković, M., Jugović, D.,& Mitrić, M. (2021). Supplementary information for the article: Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083, https://doi.org/10.1016/j.ceramint.2021.03.016.
Ceramics International
Elsevier BV., 47(12).
Milović M, Vujković M, Jugović D, Mitrić M. Supplementary information for the article: Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083, https://doi.org/10.1016/j.ceramint.2021.03.016. Ceramics International. 2021;47(12).
Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Supplementary information for the article: Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083, https://doi.org/10.1016/j.ceramint.2021.03.016" Ceramics International, 47, no. 12 (2021)

Flexibility index and decreasing the costs in energy systems with high share of renewable energy

Pfeifer, Antun; Herc, Luka; Batas-Bijelić, Ilija; Duić, Neven

(Elsevier BV, 2021)

TY  - JOUR
AU  - Pfeifer, Antun
AU  - Herc, Luka
AU  - Batas-Bijelić, Ilija
AU  - Duić, Neven
PY  - 2021
AB  - Recent European Green Deal includes decision to become carbon neutral and even carbon negative region in order to tackle the climate crisis. Main technical challenge and a key factor in techno-economic analysis of the energy system of the future, based on variable renewable energy sources, is their variable production and its integration. In order to deal with this problem in long-term energy planning, different approaches have been tried, focusing on overcapacity, storage capacities and sectors coupling with heating and transport. In this research, different flexibility options, storage and demand response technologies are modelled on a national energy systems level. With the case study area modelled in EnergyPLAN model, the goal of the research is to show how each flexibility option influences the economically feasible generation capacities of renewable energy sources, storage technologies and demand response in order to reach a certain share of renewable energy in final energy consumed. To follow the numerous possible configurations of the system, flexibility index for each option and a flexibility vector for each scenario are introduced. Results show which flexibility options play key role in important steps of energy transition to 70%, 80%, 90% and 100% RES energy system.
PB  - Elsevier BV
T2  - Energy Conversion and Management
T1  - Flexibility index and decreasing the costs in energy systems with high share of renewable energy
SP  - 114258
VL  - 240
DO  - 10.1016/j.enconman.2021.114258
ER  - 
@article{
author = "Pfeifer, Antun and Herc, Luka and Batas-Bijelić, Ilija and Duić, Neven",
year = "2021",
abstract = "Recent European Green Deal includes decision to become carbon neutral and even carbon negative region in order to tackle the climate crisis. Main technical challenge and a key factor in techno-economic analysis of the energy system of the future, based on variable renewable energy sources, is their variable production and its integration. In order to deal with this problem in long-term energy planning, different approaches have been tried, focusing on overcapacity, storage capacities and sectors coupling with heating and transport. In this research, different flexibility options, storage and demand response technologies are modelled on a national energy systems level. With the case study area modelled in EnergyPLAN model, the goal of the research is to show how each flexibility option influences the economically feasible generation capacities of renewable energy sources, storage technologies and demand response in order to reach a certain share of renewable energy in final energy consumed. To follow the numerous possible configurations of the system, flexibility index for each option and a flexibility vector for each scenario are introduced. Results show which flexibility options play key role in important steps of energy transition to 70%, 80%, 90% and 100% RES energy system.",
publisher = "Elsevier BV",
journal = "Energy Conversion and Management",
title = "Flexibility index and decreasing the costs in energy systems with high share of renewable energy",
pages = "114258",
volume = "240",
doi = "10.1016/j.enconman.2021.114258"
}
Pfeifer, A., Herc, L., Batas-Bijelić, I.,& Duić, N. (2021). Flexibility index and decreasing the costs in energy systems with high share of renewable energy.
Energy Conversion and Management
Elsevier BV., 240, 114258.
https://doi.org/10.1016/j.enconman.2021.114258
Pfeifer A, Herc L, Batas-Bijelić I, Duić N. Flexibility index and decreasing the costs in energy systems with high share of renewable energy. Energy Conversion and Management. 2021;240:114258.
doi:10.1016/j.enconman.2021.114258.
Pfeifer Antun, Herc Luka, Batas-Bijelić Ilija, Duić Neven, "Flexibility index and decreasing the costs in energy systems with high share of renewable energy" Energy Conversion and Management, 240 (2021):114258,
https://doi.org/10.1016/j.enconman.2021.114258 .
2

Integer codes correcting single asymmetric errors

Radonjic, Aleksandar

(Springer Science and Business Media LLC, 2021)

TY  - JOUR
AU  - Radonjic, Aleksandar
PY  - 2021
AB  - This paper presents a class of integer codes capable of correcting single asymmetric errors. The presented codes are defined over the ring of integers modulo 2b– 1 and are constructed with the help of a computer. The results of an exhaustive search have shown that, for practical lengths up to 4096 bits, the proposed codes use the same number of check bits as the best systematic single asymmetric error-correcting codes (SAECCs). Besides this, it is found that for some lengths the presented codes are perfect. Finally, the paper shows that the encoding/decoding complexity of the proposed codes is notably lower than that of the best systematic SAECCs.
PB  - Springer Science and Business Media LLC
T2  - Annals of Telecommunications
T1  - Integer codes correcting single asymmetric errors
SP  - 109
EP  - 113
VL  - 76
IS  - 1-2
DO  - 10.1007/s12243-020-00816-w
ER  - 
@article{
author = "Radonjic, Aleksandar",
year = "2021",
abstract = "This paper presents a class of integer codes capable of correcting single asymmetric errors. The presented codes are defined over the ring of integers modulo 2b– 1 and are constructed with the help of a computer. The results of an exhaustive search have shown that, for practical lengths up to 4096 bits, the proposed codes use the same number of check bits as the best systematic single asymmetric error-correcting codes (SAECCs). Besides this, it is found that for some lengths the presented codes are perfect. Finally, the paper shows that the encoding/decoding complexity of the proposed codes is notably lower than that of the best systematic SAECCs.",
publisher = "Springer Science and Business Media LLC",
journal = "Annals of Telecommunications",
title = "Integer codes correcting single asymmetric errors",
pages = "109-113",
volume = "76",
number = "1-2",
doi = "10.1007/s12243-020-00816-w"
}
Radonjic, A. (2021). Integer codes correcting single asymmetric errors.
Annals of Telecommunications
Springer Science and Business Media LLC., 76(1-2), 109-113.
https://doi.org/10.1007/s12243-020-00816-w
Radonjic A. Integer codes correcting single asymmetric errors. Annals of Telecommunications. 2021;76(1-2):109-113.
doi:10.1007/s12243-020-00816-w.
Radonjic Aleksandar, "Integer codes correcting single asymmetric errors" Annals of Telecommunications, 76, no. 1-2 (2021):109-113,
https://doi.org/10.1007/s12243-020-00816-w .

Integer codes correcting single asymmetric errors

Radonjic, Aleksandar

(Springer Science and Business Media LLC, 2021)

TY  - JOUR
AU  - Radonjic, Aleksandar
PY  - 2021
AB  - This paper presents a class of integer codes capable of correcting single asymmetric errors. The presented codes are defined over the ring of integers modulo 2b– 1 and are constructed with the help of a computer. The results of an exhaustive search have shown that, for practical lengths up to 4096 bits, the proposed codes use the same number of check bits as the best systematic single asymmetric error-correcting codes (SAECCs). Besides this, it is found that for some lengths the presented codes are perfect. Finally, the paper shows that the encoding/decoding complexity of the proposed codes is notably lower than that of the best systematic SAECCs.
PB  - Springer Science and Business Media LLC
T2  - Annals of Telecommunications
T1  - Integer codes correcting single asymmetric errors
SP  - 109
EP  - 113
VL  - 76
IS  - 1-2
DO  - 10.1007/s12243-020-00816-w
ER  - 
@article{
author = "Radonjic, Aleksandar",
year = "2021",
abstract = "This paper presents a class of integer codes capable of correcting single asymmetric errors. The presented codes are defined over the ring of integers modulo 2b– 1 and are constructed with the help of a computer. The results of an exhaustive search have shown that, for practical lengths up to 4096 bits, the proposed codes use the same number of check bits as the best systematic single asymmetric error-correcting codes (SAECCs). Besides this, it is found that for some lengths the presented codes are perfect. Finally, the paper shows that the encoding/decoding complexity of the proposed codes is notably lower than that of the best systematic SAECCs.",
publisher = "Springer Science and Business Media LLC",
journal = "Annals of Telecommunications",
title = "Integer codes correcting single asymmetric errors",
pages = "109-113",
volume = "76",
number = "1-2",
doi = "10.1007/s12243-020-00816-w"
}
Radonjic, A. (2021). Integer codes correcting single asymmetric errors.
Annals of Telecommunications
Springer Science and Business Media LLC., 76(1-2), 109-113.
https://doi.org/10.1007/s12243-020-00816-w
Radonjic A. Integer codes correcting single asymmetric errors. Annals of Telecommunications. 2021;76(1-2):109-113.
doi:10.1007/s12243-020-00816-w.
Radonjic Aleksandar, "Integer codes correcting single asymmetric errors" Annals of Telecommunications, 76, no. 1-2 (2021):109-113,
https://doi.org/10.1007/s12243-020-00816-w .

Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode

Milović, Miloš; Vujković, Milica; Jugović, Dragana; Mitrić, Miodrag

(Elsevier BV, 2021)

TY  - JOUR
AU  - Milović, Miloš
AU  - Vujković, Milica
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
PY  - 2021
AB  - Electrochemical and structural properties of LiV2O5 cathode were investigated. Obtained by solid state reaction at high temperature the material crystallized as gamma polymorph phase, γ-LiV2O5. The gamma structure provides two crystallographic sites to accommodate lithium ions, Li1 and Li2 position. Lithium insertion at these two sites occurs at two respective voltages versus lithium metal: ~3.6 V (Li1) and ~2.4 V (Li2). Intercalation at Li1 position is reversible in both organic and aqueous electrolyte and provides stable cycling performance at the high voltage. On the contrary, sluggish insertion/removal of Li+ at Li2 sites causes unstable performance and significant storage capacity fade at lower voltages. Lithium diffusion 3d landscape was determined by bond valence calculations applied on the γ-LiV2O5 phase, as well as on the metastable phases of γ′-V2O5 and ζ-Li2V2O5 that exist at high and low voltages respectively. The model was proposed based on inactivity of Li2 position of the metastable ζ-Li2V2O5 phase which provides explanation for the observed storage capacity loss at low voltages.
PB  - Elsevier BV
T2  - Ceramics International
T1  - Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode
SP  - 17077
EP  - 17083
VL  - 47
IS  - 12
DO  - 10.1016/j.ceramint.2021.03.016
ER  - 
@article{
author = "Milović, Miloš and Vujković, Milica and Jugović, Dragana and Mitrić, Miodrag",
year = "2021",
abstract = "Electrochemical and structural properties of LiV2O5 cathode were investigated. Obtained by solid state reaction at high temperature the material crystallized as gamma polymorph phase, γ-LiV2O5. The gamma structure provides two crystallographic sites to accommodate lithium ions, Li1 and Li2 position. Lithium insertion at these two sites occurs at two respective voltages versus lithium metal: ~3.6 V (Li1) and ~2.4 V (Li2). Intercalation at Li1 position is reversible in both organic and aqueous electrolyte and provides stable cycling performance at the high voltage. On the contrary, sluggish insertion/removal of Li+ at Li2 sites causes unstable performance and significant storage capacity fade at lower voltages. Lithium diffusion 3d landscape was determined by bond valence calculations applied on the γ-LiV2O5 phase, as well as on the metastable phases of γ′-V2O5 and ζ-Li2V2O5 that exist at high and low voltages respectively. The model was proposed based on inactivity of Li2 position of the metastable ζ-Li2V2O5 phase which provides explanation for the observed storage capacity loss at low voltages.",
publisher = "Elsevier BV",
journal = "Ceramics International",
title = "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode",
pages = "17077-17083",
volume = "47",
number = "12",
doi = "10.1016/j.ceramint.2021.03.016"
}
Milović, M., Vujković, M., Jugović, D.,& Mitrić, M. (2021). Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode.
Ceramics International
Elsevier BV., 47(12), 17077-17083.
https://doi.org/10.1016/j.ceramint.2021.03.016
Milović M, Vujković M, Jugović D, Mitrić M. Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode. Ceramics International. 2021;47(12):17077-17083.
doi:10.1016/j.ceramint.2021.03.016.
Milović Miloš, Vujković Milica, Jugović Dragana, Mitrić Miodrag, "Electrochemical and structural study on cycling performance of γ-LiV2O5 cathode" Ceramics International, 47, no. 12 (2021):17077-17083,
https://doi.org/10.1016/j.ceramint.2021.03.016 .

Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model

Denysenko, I. B.; Stefanović, Ilija; Mikikian, M.; Kovačević, E.; Berndt, J.

(IOP Publishing, 2021)

TY  - JOUR
AU  - Denysenko, I. B.
AU  - Stefanović, Ilija
AU  - Mikikian, M.
AU  - Kovačević, E.
AU  - Berndt, J.
PY  - 2021
AB  - The properties (densities of electrons and metastable argon atoms, effective electron temperature and dust charge) of argon/dust and pure argon pulsed plasmas are studied using a spatially-averaged model. The calculated time-dependencies for the densities of electrons and metastable atoms are compared with the experimental measurements and are found to be in a good qualitative agreement. It is analyzed how the plasma properties depend on the shape of the electron energy probability function (EEPF), the pulsing frequency and the duty cycle for both dust-free and dusty plasma. The analysis reveals that the agreement between theory and experiment is better with Druyvesteyn EEPF than the Maxwellian EEPF. Further, the variation in the pulsing frequency νp differently affects the metastable density nm in a dust-free and in a dusty plasma. For large νp, the metastable density in the dust-free pulsed plasma is larger than in the continuous-wave (CW) discharge, while the opposite is obtained in the presence of dust particles. This difference probably arises because of faster variation in the effective electron temperature in the dusty plasma due to collection of electrons by dust particles. Our calculations also show that dust particles may affect the behavior of electron density in the beginning of the on-period due to an enhancement in electron collection by dust particles.
PB  - IOP Publishing
T2  - Journal of Physics D: Applied Physics
T1  - Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model
SP  - 065202
VL  - 54
IS  - 6
DO  - 10.1088/1361-6463/abc210
UR  - https://hdl.handle.net/21.15107/rcub_dais_11627
ER  - 
@article{
author = "Denysenko, I. B. and Stefanović, Ilija and Mikikian, M. and Kovačević, E. and Berndt, J.",
year = "2021",
abstract = "The properties (densities of electrons and metastable argon atoms, effective electron temperature and dust charge) of argon/dust and pure argon pulsed plasmas are studied using a spatially-averaged model. The calculated time-dependencies for the densities of electrons and metastable atoms are compared with the experimental measurements and are found to be in a good qualitative agreement. It is analyzed how the plasma properties depend on the shape of the electron energy probability function (EEPF), the pulsing frequency and the duty cycle for both dust-free and dusty plasma. The analysis reveals that the agreement between theory and experiment is better with Druyvesteyn EEPF than the Maxwellian EEPF. Further, the variation in the pulsing frequency νp differently affects the metastable density nm in a dust-free and in a dusty plasma. For large νp, the metastable density in the dust-free pulsed plasma is larger than in the continuous-wave (CW) discharge, while the opposite is obtained in the presence of dust particles. This difference probably arises because of faster variation in the effective electron temperature in the dusty plasma due to collection of electrons by dust particles. Our calculations also show that dust particles may affect the behavior of electron density in the beginning of the on-period due to an enhancement in electron collection by dust particles.",
publisher = "IOP Publishing",
journal = "Journal of Physics D: Applied Physics",
title = "Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model",
pages = "065202",
volume = "54",
number = "6",
doi = "10.1088/1361-6463/abc210",
url = "https://hdl.handle.net/21.15107/rcub_dais_11627"
}
Denysenko, I. B., Stefanović, I., Mikikian, M., Kovačević, E.,& Berndt, J. (2021). Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model.
Journal of Physics D: Applied Physics
IOP Publishing., 54(6), 065202.
https://doi.org/10.1088/1361-6463/abc210
Denysenko IB, Stefanović I, Mikikian M, Kovačević E, Berndt J. Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model. Journal of Physics D: Applied Physics. 2021;54(6):065202.
doi:10.1088/1361-6463/abc210.
Denysenko I. B., Stefanović Ilija, Mikikian M., Kovačević E., Berndt J., "Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model" Journal of Physics D: Applied Physics, 54, no. 6 (2021):065202,
https://doi.org/10.1088/1361-6463/abc210 .

Comparative Study of the Antimicrobial Activity of Selenium Nanoparticles With Different Surface Chemistry and Structure

Filipović, Nenad; Ušjak, Dušan; Milenković, Marina; Zheng, Kai; Liverani, Liliana; Boccaccini, Aldo; Stevanović, Magdalena

(Frontiers Media SA, 2021)

TY  - JOUR
AU  - Filipović, Nenad
AU  - Ušjak, Dušan
AU  - Milenković, Marina
AU  - Zheng, Kai
AU  - Liverani, Liliana
AU  - Boccaccini, Aldo
AU  - Stevanović, Magdalena
PY  - 2021
AB  - Although selenium nanoparticles (SeNPs) have gained attention in the scientific community mostly through investigation of their anticancer activity, a great potential of this nanomaterial was recognized recently regarding its antimicrobial activity. The particle form, size, and surface chemistry have been recognized as crucial parameters determining the interaction of nanomaterials with biological entities. Furthermore, considering a narrow boundary between beneficial and toxic effects for selenium per se, it is clear that investigations of biomedical applications of SeNPs are very demanding and must be done with great precautions. The goal of this work is to evaluate the effects of SeNPs surface chemistry and structure on antimicrobial activity against several common bacterial strains, including Staphylococcus aureus (ATCC 6538), Enterococcus faecalis (ATCC 29212), Bacillus subtilis (ATCC 6633), and Kocuria rhizophila (ATCC 9341), as well as Escherichia coli (ATCC 8739), Salmonella Abony (NCTC 6017), Klebsiella pneumoniae (NCIMB 9111) and Pseudomonas aeruginosa (ATCC 9027), and the standard yeast strain Candida albicans (ATCC 10231). Three types of SeNPs were synthesized by chemical reduction approach using different stabilizers and reducing agents: (i) bovine serum albumin (BSA) + ascorbic acid, (ii) chitosan + ascorbic acid, and (iii) with glucose. A thorough physicochemical characterization of the obtained SeNPs was performed to determine the effects of varying synthesis parameters on their morphology, size, structure, and surface chemistry. All SeNPs were amorphous, with spherical morphology and size in the range 70–300 nm. However, the SeNPs obtained under different synthesis conditions, i.e. by using different stabilizers as well as reducing agents, exhibited different antimicrobial activity as well as cytotoxicity which are crucial for their applications. In this paper, the antimicrobial screening of the selected systems is presented, which was determined by the broth microdilution method, and inhibitory influence on the production of monomicrobial and dual-species biofilm was evaluated. The potential mechanism of action of different systems is proposed. Additionally, the cytotoxicity of SeNPs was examined on the MRC-5 cell line, in the same concentration interval as for antimicrobial testing. It was shown that formulation SeNPs-BSA expressed a significantly lower cytotoxic effect than the other two formulations.
PB  - Frontiers Media SA
T2  - Frontiers in Bioengineering and Biotechnology
T1  - Comparative Study of the Antimicrobial Activity of Selenium Nanoparticles With Different Surface Chemistry and Structure
VL  - 8
DO  - 10.3389/fbioe.2020.624621
ER  - 
@article{
author = "Filipović, Nenad and Ušjak, Dušan and Milenković, Marina and Zheng, Kai and Liverani, Liliana and Boccaccini, Aldo and Stevanović, Magdalena",
year = "2021",
abstract = "Although selenium nanoparticles (SeNPs) have gained attention in the scientific community mostly through investigation of their anticancer activity, a great potential of this nanomaterial was recognized recently regarding its antimicrobial activity. The particle form, size, and surface chemistry have been recognized as crucial parameters determining the interaction of nanomaterials with biological entities. Furthermore, considering a narrow boundary between beneficial and toxic effects for selenium per se, it is clear that investigations of biomedical applications of SeNPs are very demanding and must be done with great precautions. The goal of this work is to evaluate the effects of SeNPs surface chemistry and structure on antimicrobial activity against several common bacterial strains, including Staphylococcus aureus (ATCC 6538), Enterococcus faecalis (ATCC 29212), Bacillus subtilis (ATCC 6633), and Kocuria rhizophila (ATCC 9341), as well as Escherichia coli (ATCC 8739), Salmonella Abony (NCTC 6017), Klebsiella pneumoniae (NCIMB 9111) and Pseudomonas aeruginosa (ATCC 9027), and the standard yeast strain Candida albicans (ATCC 10231). Three types of SeNPs were synthesized by chemical reduction approach using different stabilizers and reducing agents: (i) bovine serum albumin (BSA) + ascorbic acid, (ii) chitosan + ascorbic acid, and (iii) with glucose. A thorough physicochemical characterization of the obtained SeNPs was performed to determine the effects of varying synthesis parameters on their morphology, size, structure, and surface chemistry. All SeNPs were amorphous, with spherical morphology and size in the range 70–300 nm. However, the SeNPs obtained under different synthesis conditions, i.e. by using different stabilizers as well as reducing agents, exhibited different antimicrobial activity as well as cytotoxicity which are crucial for their applications. In this paper, the antimicrobial screening of the selected systems is presented, which was determined by the broth microdilution method, and inhibitory influence on the production of monomicrobial and dual-species biofilm was evaluated. The potential mechanism of action of different systems is proposed. Additionally, the cytotoxicity of SeNPs was examined on the MRC-5 cell line, in the same concentration interval as for antimicrobial testing. It was shown that formulation SeNPs-BSA expressed a significantly lower cytotoxic effect than the other two formulations.",
publisher = "Frontiers Media SA",
journal = "Frontiers in Bioengineering and Biotechnology",
title = "Comparative Study of the Antimicrobial Activity of Selenium Nanoparticles With Different Surface Chemistry and Structure",
volume = "8",
doi = "10.3389/fbioe.2020.624621"
}
Filipović, N., Ušjak, D., Milenković, M., Zheng, K., Liverani, L., Boccaccini, A.,& Stevanović, M. (2021). Comparative Study of the Antimicrobial Activity of Selenium Nanoparticles With Different Surface Chemistry and Structure.
Frontiers in Bioengineering and Biotechnology
Frontiers Media SA., 8.
https://doi.org/10.3389/fbioe.2020.624621
Filipović N, Ušjak D, Milenković M, Zheng K, Liverani L, Boccaccini A, Stevanović M. Comparative Study of the Antimicrobial Activity of Selenium Nanoparticles With Different Surface Chemistry and Structure. Frontiers in Bioengineering and Biotechnology. 2021;8.
doi:10.3389/fbioe.2020.624621.
Filipović Nenad, Ušjak Dušan, Milenković Marina, Zheng Kai, Liverani Liliana, Boccaccini Aldo, Stevanović Magdalena, "Comparative Study of the Antimicrobial Activity of Selenium Nanoparticles With Different Surface Chemistry and Structure" Frontiers in Bioengineering and Biotechnology, 8 (2021),
https://doi.org/10.3389/fbioe.2020.624621 .
3
3
2

Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix

Milović, Miloš; Jugović, Dragana; Vujković, Milica; Kuzmanović, Maja; Mraković, Ana; Mitrić, Miodrag

(Springer Science and Business Media LLC, 2021)

TY  - JOUR
AU  - Milović, Miloš
AU  - Jugović, Dragana
AU  - Vujković, Milica
AU  - Kuzmanović, Maja
AU  - Mraković, Ana
AU  - Mitrić, Miodrag
PY  - 2021
AB  - The polyanion cathodes for Li-ion batteries, namely LiFePO4, Li2FeP2O7 and Li2FeSiO4, were synthesized by very short high-temperature treatment (approximately several minutes) and subsequent quenching. Methylcellulose—a polymer with thermally driven water solubility—was used as the medium in which the precursor solutions were dispersed prior to high temperature treatment. The methylcellulose pyrolytically decomposes to carbon, thus producing the polyanion material/carbon composites of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C. The obtained powders have reduced crystallinity and significant microstructural characteristics: low crystallite size and notable microstrain. They exhibit stable electrochemical performances in both aqueous and organic electrolyte. The broadening of existing peaks in cyclic voltammetry and/or the emergence of new broad peaks was attributed to the presence of the amorphous phase in the samples. In galvanostatic charge–discharge tests, the materials provided high capacities at low current densities, while the highest rate performance was demonstrated by olivine-phosphate when compared to the other two materials.
PB  - Springer Science and Business Media LLC
T2  - Bulletin of Materials Science
T1  - Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix
SP  - 144
VL  - 44
IS  - 2
DO  - 10.1007/s12034-021-02397-3
UR  - https://hdl.handle.net/21.15107/rcub_dais_11635
ER  - 
@article{
author = "Milović, Miloš and Jugović, Dragana and Vujković, Milica and Kuzmanović, Maja and Mraković, Ana and Mitrić, Miodrag",
year = "2021",
abstract = "The polyanion cathodes for Li-ion batteries, namely LiFePO4, Li2FeP2O7 and Li2FeSiO4, were synthesized by very short high-temperature treatment (approximately several minutes) and subsequent quenching. Methylcellulose—a polymer with thermally driven water solubility—was used as the medium in which the precursor solutions were dispersed prior to high temperature treatment. The methylcellulose pyrolytically decomposes to carbon, thus producing the polyanion material/carbon composites of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C. The obtained powders have reduced crystallinity and significant microstructural characteristics: low crystallite size and notable microstrain. They exhibit stable electrochemical performances in both aqueous and organic electrolyte. The broadening of existing peaks in cyclic voltammetry and/or the emergence of new broad peaks was attributed to the presence of the amorphous phase in the samples. In galvanostatic charge–discharge tests, the materials provided high capacities at low current densities, while the highest rate performance was demonstrated by olivine-phosphate when compared to the other two materials.",
publisher = "Springer Science and Business Media LLC",
journal = "Bulletin of Materials Science",
title = "Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix",
pages = "144",
volume = "44",
number = "2",
doi = "10.1007/s12034-021-02397-3",
url = "https://hdl.handle.net/21.15107/rcub_dais_11635"
}
Milović, M., Jugović, D., Vujković, M., Kuzmanović, M., Mraković, A.,& Mitrić, M. (2021). Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix.
Bulletin of Materials Science
Springer Science and Business Media LLC., 44(2), 144.
https://doi.org/10.1007/s12034-021-02397-3
Milović M, Jugović D, Vujković M, Kuzmanović M, Mraković A, Mitrić M. Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix. Bulletin of Materials Science. 2021;44(2):144.
doi:10.1007/s12034-021-02397-3.
Milović Miloš, Jugović Dragana, Vujković Milica, Kuzmanović Maja, Mraković Ana, Mitrić Miodrag, "Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix" Bulletin of Materials Science, 44, no. 2 (2021):144,
https://doi.org/10.1007/s12034-021-02397-3 .

Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix

Milović, Miloš; Jugović, Dragana; Vujković, Milica; Kuzmanović, Maja; Mraković, Ana; Mitrić, Miodrag

(Springer Science and Business Media LLC, 2021)

TY  - JOUR
AU  - Milović, Miloš
AU  - Jugović, Dragana
AU  - Vujković, Milica
AU  - Kuzmanović, Maja
AU  - Mraković, Ana
AU  - Mitrić, Miodrag
PY  - 2021
AB  - The polyanion cathodes for Li-ion batteries, namely LiFePO4, Li2FeP2O7 and Li2FeSiO4, were synthesized by very short high-temperature treatment (approximately several minutes) and subsequent quenching. Methylcellulose—a polymer with thermally driven water solubility—was used as the medium in which the precursor solutions were dispersed prior to high temperature treatment. The methylcellulose pyrolytically decomposes to carbon, thus producing the polyanion material/carbon composites of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C. The obtained powders have reduced crystallinity and significant microstructural characteristics: low crystallite size and notable microstrain. They exhibit stable electrochemical performances in both aqueous and organic electrolyte. The broadening of existing peaks in cyclic voltammetry and/or the emergence of new broad peaks was attributed to the presence of the amorphous phase in the samples. In galvanostatic charge–discharge tests, the materials provided high capacities at low current densities, while the highest rate performance was demonstrated by olivine-phosphate when compared to the other two materials.
PB  - Springer Science and Business Media LLC
T2  - Bulletin of Materials Science
T1  - Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix
SP  - 144
VL  - 44
IS  - 2
DO  - 10.1007/s12034-021-02397-3
UR  - https://hdl.handle.net/21.15107/rcub_dais_11636
ER  - 
@article{
author = "Milović, Miloš and Jugović, Dragana and Vujković, Milica and Kuzmanović, Maja and Mraković, Ana and Mitrić, Miodrag",
year = "2021",
abstract = "The polyanion cathodes for Li-ion batteries, namely LiFePO4, Li2FeP2O7 and Li2FeSiO4, were synthesized by very short high-temperature treatment (approximately several minutes) and subsequent quenching. Methylcellulose—a polymer with thermally driven water solubility—was used as the medium in which the precursor solutions were dispersed prior to high temperature treatment. The methylcellulose pyrolytically decomposes to carbon, thus producing the polyanion material/carbon composites of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C. The obtained powders have reduced crystallinity and significant microstructural characteristics: low crystallite size and notable microstrain. They exhibit stable electrochemical performances in both aqueous and organic electrolyte. The broadening of existing peaks in cyclic voltammetry and/or the emergence of new broad peaks was attributed to the presence of the amorphous phase in the samples. In galvanostatic charge–discharge tests, the materials provided high capacities at low current densities, while the highest rate performance was demonstrated by olivine-phosphate when compared to the other two materials.",
publisher = "Springer Science and Business Media LLC",
journal = "Bulletin of Materials Science",
title = "Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix",
pages = "144",
volume = "44",
number = "2",
doi = "10.1007/s12034-021-02397-3",
url = "https://hdl.handle.net/21.15107/rcub_dais_11636"
}
Milović, M., Jugović, D., Vujković, M., Kuzmanović, M., Mraković, A.,& Mitrić, M. (2021). Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix.
Bulletin of Materials Science
Springer Science and Business Media LLC., 44(2), 144.
https://doi.org/10.1007/s12034-021-02397-3
Milović M, Jugović D, Vujković M, Kuzmanović M, Mraković A, Mitrić M. Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix. Bulletin of Materials Science. 2021;44(2):144.
doi:10.1007/s12034-021-02397-3.
Milović Miloš, Jugović Dragana, Vujković Milica, Kuzmanović Maja, Mraković Ana, Mitrić Miodrag, "Towards a green and cost-effective synthesis of polyanionic cathodes: comparative electrochemical behaviour of LiFePO4/C, Li2FeP2O7/C and Li2FeSiO4/C synthesized using methylcellulose matrix" Bulletin of Materials Science, 44, no. 2 (2021):144,
https://doi.org/10.1007/s12034-021-02397-3 .

Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction

Filipović, Suzana; Obradović, Nina; Anđelković, Ljubica; Olćan, Dragan; Petrović, Jovana; Mirković, Miljana; Pavlović, Vladimir B.; Jeremić, Dejan; Vlahović, Branislav; Đorđević, Antonije

(Belgrade : International Institute for the Science of Sintering, 2021)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Anđelković, Ljubica
AU  - Olćan, Dragan
AU  - Petrović, Jovana
AU  - Mirković, Miljana
AU  - Pavlović, Vladimir B.
AU  - Jeremić, Dejan
AU  - Vlahović, Branislav
AU  - Đorđević, Antonije
PY  - 2021
AB  - Solid-state reaction between BaTiO3 and Fe2O3 was used to produce a multiferroic heterostructure composite. Commercial BaTiO3 and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300 oC for 6 h. Sintering at 1300 oC for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19 and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3 phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3 with Fe2O3 resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction
SP  - 1
EP  - 8
VL  - 53
DO  - 10.2298/SOS2101001F
ER  - 
@article{
author = "Filipović, Suzana and Obradović, Nina and Anđelković, Ljubica and Olćan, Dragan and Petrović, Jovana and Mirković, Miljana and Pavlović, Vladimir B. and Jeremić, Dejan and Vlahović, Branislav and Đorđević, Antonije",
year = "2021",
abstract = "Solid-state reaction between BaTiO3 and Fe2O3 was used to produce a multiferroic heterostructure composite. Commercial BaTiO3 and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300 oC for 6 h. Sintering at 1300 oC for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19 and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3 phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3 with Fe2O3 resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction",
pages = "1-8",
volume = "53",
doi = "10.2298/SOS2101001F"
}
Filipović, S., Obradović, N., Anđelković, L., Olćan, D., Petrović, J., Mirković, M., Pavlović, V. B., Jeremić, D., Vlahović, B.,& Đorđević, A. (2021). Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction.
Science of Sintering
Belgrade : International Institute for the Science of Sintering., 53, 1-8.
https://doi.org/10.2298/SOS2101001F
Filipović S, Obradović N, Anđelković L, Olćan D, Petrović J, Mirković M, Pavlović VB, Jeremić D, Vlahović B, Đorđević A. Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction. Science of Sintering. 2021;53:1-8.
doi:10.2298/SOS2101001F.
Filipović Suzana, Obradović Nina, Anđelković Ljubica, Olćan Dragan, Petrović Jovana, Mirković Miljana, Pavlović Vladimir B., Jeremić Dejan, Vlahović Branislav, Đorđević Antonije, "Multiferroic Heterostructure BaTiO3/ε-Fe2O3 Composite Obtained by in situ Reaction" Science of Sintering, 53 (2021):1-8,
https://doi.org/10.2298/SOS2101001F .

Ispitivanje i otklanјanјe pojave korozije i termičkih oksida na metalnim delovima elektroenergetskog postojenja

Mihailović, Marija; Jegdić, Bore; Jugović, Branimir; Kovačina, Jovanka; Radojković, Bojana; Patarić, Aleksandra; Jokić, Bojan

(Belgrade : University of Belgrade - Institute of Chemistry, Technology and Metallurgy, 2021)

TY  - BOOK
AU  - Mihailović, Marija
AU  - Jegdić, Bore
AU  - Jugović, Branimir
AU  - Kovačina, Jovanka
AU  - Radojković, Bojana
AU  - Patarić, Aleksandra
AU  - Jokić, Bojan
PY  - 2021
AB  - Praćenje pojave i brzine korozije, nastanak termičkih oksida na površini metalnih delova eletroenergetskog postrojenјa, kao i način njihovog otklanjanja na način koji je tehnološki pogodan, ekonomski pristupačan i ekološki opravdan prikazan je u ovom tehničkom rešenju Ispitivanjem je ustanovljeno da su metalni delovi na kojima se javlja korozija izrađeni od na nerđajućeg čelika AISI 304, pa je pojava korozije i termičkih oksida praćena je u odnosu na to, kao i sastav prašine sa kojom su metalni delovi u kontaktu. Pojava termičkih oksida na površini nerđajućih čelika posledica je povišene temperature na mestu zavarivanja metalnih delova.
Merena je vrednost pH oba rastvora: etalonskog i zasićenog rastvoru prašine iz pogona.
Sastav uzoraka prašine određen je FTIR metodom, pa su na osnovu prisutnih jona u rastvoru definisana ostala ispitivanja.
Određivan je korozioni potencijal Ekor, vrednost otpora polarizacije Rp, kao i gustina struje korozije jkor. Sva ispitivanja nerđajućeg čelika u etalonskom rastvoru i u zasićenom rastvoru prašine iz pogona firme naručioca, rađena su za 1 sat i u toku 25 dana.
Kao rezultat svih istražoivanja, date su tehnološke preporuke i način otklanjanja korozije i termičkih oksida.
Rešenje je prodato naručuicu u toku 2020.godine, a od januara 2021.godine primenjeno u postrojenju naručioca, ELNOS BL d.o.o., koji su izjavom potvrdili primenu ovog tehničkog rešenja u svom poslovanju.
AB  - Monitoring the occurrence and rate of corrosion, the formation of thermal oxides on the surface of metal parts of the power plant, as well as the method of their elimination in a way that is technologically suitable, economically affordable and environmentally justified is shown in this technical solution. It has been established that the metal elements affected by corrosion were made from stainless steel AISI 304. Accordingly, the occurrence of corrosion and thermal oxides was monitored based on the material and the composition of the dust with which the metal parts are in contact. The emergence of thermal oxides on the surface of stainless steels is a consequence of the elevated temperature at the welding site.
The pH value of both solutions was measured: standard and saturated solution of dust from the plant. The composition of the dust samples was determined by FTIR. The other tests were defined based on the ions present in the solution.
The corrosion potential, the value of the polarization resistance, as well as the corrosion current density were determined. All tests of stainless steel in the standard solution and in the saturated solution of dust were performed for one hour within a span of 25 days.
Technological recommendations on how to eliminate corrosion and thermal oxides are provided.
The solution has been applied since January 2021 by ELNOS BL d.o.o.
PB  - Belgrade : University of Belgrade - Institute of Chemistry, Technology and Metallurgy
T1  - Ispitivanje i otklanјanјe pojave korozije i termičkih oksida na metalnim delovima elektroenergetskog postojenja
T1  - Possibility of removal of corrosion and thermal oxides on metal parts of electric power plant
UR  - https://hdl.handle.net/21.15107/rcub_dais_11630
ER  - 
@book{
author = "Mihailović, Marija and Jegdić, Bore and Jugović, Branimir and Kovačina, Jovanka and Radojković, Bojana and Patarić, Aleksandra and Jokić, Bojan",
year = "2021",
abstract = "Praćenje pojave i brzine korozije, nastanak termičkih oksida na površini metalnih delova eletroenergetskog postrojenјa, kao i način njihovog otklanjanja na način koji je tehnološki pogodan, ekonomski pristupačan i ekološki opravdan prikazan je u ovom tehničkom rešenju Ispitivanjem je ustanovljeno da su metalni delovi na kojima se javlja korozija izrađeni od na nerđajućeg čelika AISI 304, pa je pojava korozije i termičkih oksida praćena je u odnosu na to, kao i sastav prašine sa kojom su metalni delovi u kontaktu. Pojava termičkih oksida na površini nerđajućih čelika posledica je povišene temperature na mestu zavarivanja metalnih delova.
Merena je vrednost pH oba rastvora: etalonskog i zasićenog rastvoru prašine iz pogona.
Sastav uzoraka prašine određen je FTIR metodom, pa su na osnovu prisutnih jona u rastvoru definisana ostala ispitivanja.
Određivan je korozioni potencijal Ekor, vrednost otpora polarizacije Rp, kao i gustina struje korozije jkor. Sva ispitivanja nerđajućeg čelika u etalonskom rastvoru i u zasićenom rastvoru prašine iz pogona firme naručioca, rađena su za 1 sat i u toku 25 dana.
Kao rezultat svih istražoivanja, date su tehnološke preporuke i način otklanjanja korozije i termičkih oksida.
Rešenje je prodato naručuicu u toku 2020.godine, a od januara 2021.godine primenjeno u postrojenju naručioca, ELNOS BL d.o.o., koji su izjavom potvrdili primenu ovog tehničkog rešenja u svom poslovanju., Monitoring the occurrence and rate of corrosion, the formation of thermal oxides on the surface of metal parts of the power plant, as well as the method of their elimination in a way that is technologically suitable, economically affordable and environmentally justified is shown in this technical solution. It has been established that the metal elements affected by corrosion were made from stainless steel AISI 304. Accordingly, the occurrence of corrosion and thermal oxides was monitored based on the material and the composition of the dust with which the metal parts are in contact. The emergence of thermal oxides on the surface of stainless steels is a consequence of the elevated temperature at the welding site.
The pH value of both solutions was measured: standard and saturated solution of dust from the plant. The composition of the dust samples was determined by FTIR. The other tests were defined based on the ions present in the solution.
The corrosion potential, the value of the polarization resistance, as well as the corrosion current density were determined. All tests of stainless steel in the standard solution and in the saturated solution of dust were performed for one hour within a span of 25 days.
Technological recommendations on how to eliminate corrosion and thermal oxides are provided.
The solution has been applied since January 2021 by ELNOS BL d.o.o.",
publisher = "Belgrade : University of Belgrade - Institute of Chemistry, Technology and Metallurgy",
title = "Ispitivanje i otklanјanјe pojave korozije i termičkih oksida na metalnim delovima elektroenergetskog postojenja, Possibility of removal of corrosion and thermal oxides on metal parts of electric power plant",
url = "https://hdl.handle.net/21.15107/rcub_dais_11630"
}
Mihailović, M., Jegdić, B., Jugović, B., Kovačina, J., Radojković, B., Patarić, A.,& Jokić, B. (2021). Possibility of removal of corrosion and thermal oxides on metal parts of electric power plant.

Belgrade : University of Belgrade - Institute of Chemistry, Technology and Metallurgy..
Mihailović M, Jegdić B, Jugović B, Kovačina J, Radojković B, Patarić A, Jokić B. Possibility of removal of corrosion and thermal oxides on metal parts of electric power plant. 2021;.
Mihailović Marija, Jegdić Bore, Jugović Branimir, Kovačina Jovanka, Radojković Bojana, Patarić Aleksandra, Jokić Bojan, "Possibility of removal of corrosion and thermal oxides on metal parts of electric power plant" (2021)

The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries

Rakočević, Lazar; Štrbac, Svetlana; Potočnik, Jelena; Popović, Maja; Jugović, Dragana; Stojković Šimatović, Ivana

(Elsevier, 2021)

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Potočnik, Jelena
AU  - Popović, Maja
AU  - Jugović, Dragana
AU  - Stojković Šimatović, Ivana
PY  - 2021
AB  - Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.
PB  - Elsevier
T2  - Ceramics International
T1  - The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries
SP  - 4595
EP  - 4603
VL  - 47
IS  - 4
DO  - 10.1016/j.ceramint.2020.10.025
UR  - https://hdl.handle.net/21.15107/rcub_dais_11229
ER  - 
@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Potočnik, Jelena and Popović, Maja and Jugović, Dragana and Stojković Šimatović, Ivana",
year = "2021",
abstract = "Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries",
pages = "4595-4603",
volume = "47",
number = "4",
doi = "10.1016/j.ceramint.2020.10.025",
url = "https://hdl.handle.net/21.15107/rcub_dais_11229"
}
Rakočević, L., Štrbac, S., Potočnik, J., Popović, M., Jugović, D.,& Stojković Šimatović, I. (2021). The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries.
Ceramics International
Elsevier., 47(4), 4595-4603.
https://doi.org/10.1016/j.ceramint.2020.10.025
Rakočević L, Štrbac S, Potočnik J, Popović M, Jugović D, Stojković Šimatović I. The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. Ceramics International. 2021;47(4):4595-4603.
doi:10.1016/j.ceramint.2020.10.025.
Rakočević Lazar, Štrbac Svetlana, Potočnik Jelena, Popović Maja, Jugović Dragana, Stojković Šimatović Ivana, "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries" Ceramics International, 47, no. 4 (2021):4595-4603,
https://doi.org/10.1016/j.ceramint.2020.10.025 .

The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries

Rakočević, Lazar; Štrbac, Svetlana; Potočnik, Jelena; Popović, Maja; Jugović, Dragana; Stojković Simatović, Ivana

(Elsevier BV, 2021)

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Potočnik, Jelena
AU  - Popović, Maja
AU  - Jugović, Dragana
AU  - Stojković Simatović, Ivana
PY  - 2021
AB  - Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 °C, while 3-D tunnel structured Na0·4MnO2 and Na0·44MnO2, both with rod-like morphology, were obtained at 800 °C and 900 °C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0·44MnO2 obtained at 900 °C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.
PB  - Elsevier BV
T2  - Ceramics International
T1  - The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries
SP  - 4595
EP  - 4603
VL  - 47
IS  - 4
DO  - 10.1016/j.ceramint.2020.10.025
UR  - https://hdl.handle.net/21.15107/rcub_dais_10035
ER  - 
@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Potočnik, Jelena and Popović, Maja and Jugović, Dragana and Stojković Simatović, Ivana",
year = "2021",
abstract = "Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 °C, while 3-D tunnel structured Na0·4MnO2 and Na0·44MnO2, both with rod-like morphology, were obtained at 800 °C and 900 °C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0·44MnO2 obtained at 900 °C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.",
publisher = "Elsevier BV",
journal = "Ceramics International",
title = "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries",
pages = "4595-4603",
volume = "47",
number = "4",
doi = "10.1016/j.ceramint.2020.10.025",
url = "https://hdl.handle.net/21.15107/rcub_dais_10035"
}
Rakočević, L., Štrbac, S., Potočnik, J., Popović, M., Jugović, D.,& Stojković Simatović, I. (2021). The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries.
Ceramics International
Elsevier BV., 47(4), 4595-4603.
https://doi.org/10.1016/j.ceramint.2020.10.025
Rakočević L, Štrbac S, Potočnik J, Popović M, Jugović D, Stojković Simatović I. The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. Ceramics International. 2021;47(4):4595-4603.
doi:10.1016/j.ceramint.2020.10.025.
Rakočević Lazar, Štrbac Svetlana, Potočnik Jelena, Popović Maja, Jugović Dragana, Stojković Simatović Ivana, "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries" Ceramics International, 47, no. 4 (2021):4595-4603,
https://doi.org/10.1016/j.ceramint.2020.10.025 .

Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model

Denysenko, I. B.; Stefanović, Ilija; Mikikian, M.; Kovačević, E.; Berndt, J.

(IOP Publishing, 2021)

TY  - JOUR
AU  - Denysenko, I. B.
AU  - Stefanović, Ilija
AU  - Mikikian, M.
AU  - Kovačević, E.
AU  - Berndt, J.
PY  - 2021
AB  - The properties (densities of electrons and metastable argon atoms, effective electron temperature and dust charge) of argon/dust and pure argon pulsed plasmas are studied using a spatially-averaged model. The calculated time-dependencies for the densities of electrons and metastable atoms are compared with the experimental measurements and are found to be in a good qualitative agreement. It is analyzed how the plasma properties depend on the shape of the electron energy probability function (EEPF), the pulsing frequency and the duty cycle for both dust-free and dusty plasma. The analysis reveals that the agreement between theory and experiment is better with Druyvesteyn EEPF than the Maxwellian EEPF. Further, the variation in the pulsing frequency νp differently affects the metastable density nm in a dust-free and in a dusty plasma. For large νp, the metastable density in the dust-free pulsed plasma is larger than in the continuous-wave (CW) discharge, while the opposite is obtained in the presence of dust particles. This difference probably arises because of faster variation in the effective electron temperature in the dusty plasma due to collection of electrons by dust particles. Our calculations also show that dust particles may affect the behavior of electron density in the beginning of the on-period due to an enhancement in electron collection by dust particles.
PB  - IOP Publishing
T2  - Journal of Physics D: Applied Physics
T1  - Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model
SP  - 065202
VL  - 54
IS  - 6
DO  - 10.1088/1361-6463/abc210
UR  - https://hdl.handle.net/21.15107/rcub_dais_9988
ER  - 
@article{
author = "Denysenko, I. B. and Stefanović, Ilija and Mikikian, M. and Kovačević, E. and Berndt, J.",
year = "2021",
abstract = "The properties (densities of electrons and metastable argon atoms, effective electron temperature and dust charge) of argon/dust and pure argon pulsed plasmas are studied using a spatially-averaged model. The calculated time-dependencies for the densities of electrons and metastable atoms are compared with the experimental measurements and are found to be in a good qualitative agreement. It is analyzed how the plasma properties depend on the shape of the electron energy probability function (EEPF), the pulsing frequency and the duty cycle for both dust-free and dusty plasma. The analysis reveals that the agreement between theory and experiment is better with Druyvesteyn EEPF than the Maxwellian EEPF. Further, the variation in the pulsing frequency νp differently affects the metastable density nm in a dust-free and in a dusty plasma. For large νp, the metastable density in the dust-free pulsed plasma is larger than in the continuous-wave (CW) discharge, while the opposite is obtained in the presence of dust particles. This difference probably arises because of faster variation in the effective electron temperature in the dusty plasma due to collection of electrons by dust particles. Our calculations also show that dust particles may affect the behavior of electron density in the beginning of the on-period due to an enhancement in electron collection by dust particles.",
publisher = "IOP Publishing",
journal = "Journal of Physics D: Applied Physics",
title = "Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model",
pages = "065202",
volume = "54",
number = "6",
doi = "10.1088/1361-6463/abc210",
url = "https://hdl.handle.net/21.15107/rcub_dais_9988"
}
Denysenko, I. B., Stefanović, I., Mikikian, M., Kovačević, E.,& Berndt, J. (2021). Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model.
Journal of Physics D: Applied Physics
IOP Publishing., 54(6), 065202.
https://doi.org/10.1088/1361-6463/abc210
Denysenko IB, Stefanović I, Mikikian M, Kovačević E, Berndt J. Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model. Journal of Physics D: Applied Physics. 2021;54(6):065202.
doi:10.1088/1361-6463/abc210.
Denysenko I. B., Stefanović Ilija, Mikikian M., Kovačević E., Berndt J., "Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model" Journal of Physics D: Applied Physics, 54, no. 6 (2021):065202,
https://doi.org/10.1088/1361-6463/abc210 .

Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy

Mitrašinović, Aleksandar M.; Odanović, Zoran

(Elsevier BV, 2021)

TY  - JOUR
AU  - Mitrašinović, Aleksandar M.
AU  - Odanović, Zoran
PY  - 2021
AB  - Treatment of liquid aluminum alloys in low vacuum conditions is often applied for parts production in the automotive and aerospace industry because of its effectiveness in removing dissolved gases. Because of the low vapour pressure of aluminum, concentrations of the most unwanted elements can be significantly reduced at lower pressures. Presented work analyzing kinetics parameters for elemental evaporation from liquid Al7Si4Cu alloy. The pressure inside mullite refractory material was below 2.1 kPa for melt temperatures between 760 and 910 °C. The alloy’s chemical composition was characterized by the Inductively Coupled Plasma Mass Spectrometry method. Lead, Zinc, and Mercury were reduced at the highest rate while the lowest evaporation occurred for key alloying elements such as Silicon and Copper. Higher evaporation rates were achieved at higher temperatures. The evaporation ratios, volatility coefficients, reaction rate constants, mass transfer coefficients, and elemental evaporation susceptibility on temperature increase were deduced for 16 elements. The obtained results confirmed that keeping molten aluminum alloys in low vacuum conditions for one hour is an efficient method in removing unwanted elements with great potential for further improvement in industrial conditions.
PB  - Elsevier BV
T2  - Thermochimica Acta
T1  - Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy
SP  - 178816
VL  - 695
DO  - 10.1016/j.tca.2020.178816
UR  - https://hdl.handle.net/21.15107/rcub_dais_10002
ER  - 
@article{
author = "Mitrašinović, Aleksandar M. and Odanović, Zoran",
year = "2021",
abstract = "Treatment of liquid aluminum alloys in low vacuum conditions is often applied for parts production in the automotive and aerospace industry because of its effectiveness in removing dissolved gases. Because of the low vapour pressure of aluminum, concentrations of the most unwanted elements can be significantly reduced at lower pressures. Presented work analyzing kinetics parameters for elemental evaporation from liquid Al7Si4Cu alloy. The pressure inside mullite refractory material was below 2.1 kPa for melt temperatures between 760 and 910 °C. The alloy’s chemical composition was characterized by the Inductively Coupled Plasma Mass Spectrometry method. Lead, Zinc, and Mercury were reduced at the highest rate while the lowest evaporation occurred for key alloying elements such as Silicon and Copper. Higher evaporation rates were achieved at higher temperatures. The evaporation ratios, volatility coefficients, reaction rate constants, mass transfer coefficients, and elemental evaporation susceptibility on temperature increase were deduced for 16 elements. The obtained results confirmed that keeping molten aluminum alloys in low vacuum conditions for one hour is an efficient method in removing unwanted elements with great potential for further improvement in industrial conditions.",
publisher = "Elsevier BV",
journal = "Thermochimica Acta",
title = "Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy",
pages = "178816",
volume = "695",
doi = "10.1016/j.tca.2020.178816",
url = "https://hdl.handle.net/21.15107/rcub_dais_10002"
}
Mitrašinović, A. M.,& Odanović, Z. (2021). Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy.
Thermochimica Acta
Elsevier BV., 695, 178816.
https://doi.org/10.1016/j.tca.2020.178816
Mitrašinović AM, Odanović Z. Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy. Thermochimica Acta. 2021;695:178816.
doi:10.1016/j.tca.2020.178816.
Mitrašinović Aleksandar M., Odanović Zoran, "Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy" Thermochimica Acta, 695 (2021):178816,
https://doi.org/10.1016/j.tca.2020.178816 .
1
1

Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy

Mitrašinović, Aleksandar M.; Odanović, Zoran

(Elsevier BV, 2021)

TY  - JOUR
AU  - Mitrašinović, Aleksandar M.
AU  - Odanović, Zoran
PY  - 2021
AB  - Treatment of liquid aluminum alloys in low vacuum conditions is often applied for parts production in the automotive and aerospace industry because of its effectiveness in removing dissolved gases. Because of the low vapour pressure of aluminum, concentrations of the most unwanted elements can be significantly reduced at lower pressures. Presented work analyzing kinetics parameters for elemental evaporation from liquid Al7Si4Cu alloy. The pressure inside mullite refractory material was below 2.1 kPa for melt temperatures between 760 and 910 °C. The alloy’s chemical composition was characterized by the Inductively Coupled Plasma Mass Spectrometry method. Lead, Zinc, and Mercury were reduced at the highest rate while the lowest evaporation occurred for key alloying elements such as Silicon and Copper. Higher evaporation rates were achieved at higher temperatures. The evaporation ratios, volatility coefficients, reaction rate constants, mass transfer coefficients, and elemental evaporation susceptibility on temperature increase were deduced for 16 elements. The obtained results confirmed that keeping molten aluminum alloys in low vacuum conditions for one hour is an efficient method in removing unwanted elements with great potential for further improvement in industrial conditions.
PB  - Elsevier BV
T2  - Thermochimica Acta
T1  - Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy
SP  - 178816
VL  - 695
DO  - 10.1016/j.tca.2020.178816
UR  - https://hdl.handle.net/21.15107/rcub_dais_10001
ER  - 
@article{
author = "Mitrašinović, Aleksandar M. and Odanović, Zoran",
year = "2021",
abstract = "Treatment of liquid aluminum alloys in low vacuum conditions is often applied for parts production in the automotive and aerospace industry because of its effectiveness in removing dissolved gases. Because of the low vapour pressure of aluminum, concentrations of the most unwanted elements can be significantly reduced at lower pressures. Presented work analyzing kinetics parameters for elemental evaporation from liquid Al7Si4Cu alloy. The pressure inside mullite refractory material was below 2.1 kPa for melt temperatures between 760 and 910 °C. The alloy’s chemical composition was characterized by the Inductively Coupled Plasma Mass Spectrometry method. Lead, Zinc, and Mercury were reduced at the highest rate while the lowest evaporation occurred for key alloying elements such as Silicon and Copper. Higher evaporation rates were achieved at higher temperatures. The evaporation ratios, volatility coefficients, reaction rate constants, mass transfer coefficients, and elemental evaporation susceptibility on temperature increase were deduced for 16 elements. The obtained results confirmed that keeping molten aluminum alloys in low vacuum conditions for one hour is an efficient method in removing unwanted elements with great potential for further improvement in industrial conditions.",
publisher = "Elsevier BV",
journal = "Thermochimica Acta",
title = "Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy",
pages = "178816",
volume = "695",
doi = "10.1016/j.tca.2020.178816",
url = "https://hdl.handle.net/21.15107/rcub_dais_10001"
}
Mitrašinović, A. M.,& Odanović, Z. (2021). Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy.
Thermochimica Acta
Elsevier BV., 695, 178816.
https://doi.org/10.1016/j.tca.2020.178816
Mitrašinović AM, Odanović Z. Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy. Thermochimica Acta. 2021;695:178816.
doi:10.1016/j.tca.2020.178816.
Mitrašinović Aleksandar M., Odanović Zoran, "Thermodynamic and kinetics investigation of elemental evaporation from molten Al7Si4Cu alloy" Thermochimica Acta, 695 (2021):178816,
https://doi.org/10.1016/j.tca.2020.178816 .
1
1

Structure and Properties of Nanocrystalline Tetragonal BaTiO3 Prepared by Combustion Solid State Synthesis

Filipović, Suzana; Anđelković, Ljubica; Jeremić, Dejan; Vulić, Predrag; Nikolić, Aleksandar; Marković, Smilja; Paunović, Vesna; Lević, Steva; Pavlović, Vladimir B.

(Belgrade : ETRAN, 2020)

TY  - JOUR
AU  - Filipović, Suzana
AU  - Anđelković, Ljubica
AU  - Jeremić, Dejan
AU  - Vulić, Predrag
AU  - Nikolić, Aleksandar
AU  - Marković, Smilja
AU  - Paunović, Vesna
AU  - Lević, Steva
AU  - Pavlović, Vladimir B.
PY  - 2020
AB  - Barium titanate (BaTiO3) attracts high scientific and technological attention due to good dielectric and electromechanical properties. Although BaTiO3 is one of the most frequently investigated ferroelectric materials, the need for finding new and/or improved synthesis methods of this material still exists. In this paper, a novel, mild synthesis route for producing tetragonal BaTiO3 from barium nitrate and Ti-oxalate precursor is presented. Morphology of the prepared and subsequently sintered BaTiO3 was determined by SEM. Particle size distribution of the as prepared powder was monitored by the laser diffraction. The phase composition, structure and lattice dynamics were investigated by XRD and Raman spectroscopy. Finally, dielectric parameters were determined in the temperature range from 30 to 180 degrees C, and within a variety of frequencies. Curie temperature was detected at 130 degrees C.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - Structure and Properties of Nanocrystalline Tetragonal BaTiO3 Prepared by Combustion Solid State Synthesis
SP  - 257
EP  - 268
VL  - 52
DO  - 10.2298/SOS2003257F
ER  - 
@article{
author = "Filipović, Suzana and Anđelković, Ljubica and Jeremić, Dejan and Vulić, Predrag and Nikolić, Aleksandar and Marković, Smilja and Paunović, Vesna and Lević, Steva and Pavlović, Vladimir B.",
year = "2020",
abstract = "Barium titanate (BaTiO3) attracts high scientific and technological attention due to good dielectric and electromechanical properties. Although BaTiO3 is one of the most frequently investigated ferroelectric materials, the need for finding new and/or improved synthesis methods of this material still exists. In this paper, a novel, mild synthesis route for producing tetragonal BaTiO3 from barium nitrate and Ti-oxalate precursor is presented. Morphology of the prepared and subsequently sintered BaTiO3 was determined by SEM. Particle size distribution of the as prepared powder was monitored by the laser diffraction. The phase composition, structure and lattice dynamics were investigated by XRD and Raman spectroscopy. Finally, dielectric parameters were determined in the temperature range from 30 to 180 degrees C, and within a variety of frequencies. Curie temperature was detected at 130 degrees C.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "Structure and Properties of Nanocrystalline Tetragonal BaTiO3 Prepared by Combustion Solid State Synthesis",
pages = "257-268",
volume = "52",
doi = "10.2298/SOS2003257F"
}
Filipović, S., Anđelković, L., Jeremić, D., Vulić, P., Nikolić, A., Marković, S., Paunović, V., Lević, S.,& Pavlović, V. B. (2020). Structure and Properties of Nanocrystalline Tetragonal BaTiO3 Prepared by Combustion Solid State Synthesis.
Science of Sintering
Belgrade : ETRAN., 52, 257-268.
https://doi.org/10.2298/SOS2003257F
Filipović S, Anđelković L, Jeremić D, Vulić P, Nikolić A, Marković S, Paunović V, Lević S, Pavlović VB. Structure and Properties of Nanocrystalline Tetragonal BaTiO3 Prepared by Combustion Solid State Synthesis. Science of Sintering. 2020;52:257-268.
doi:10.2298/SOS2003257F.
Filipović Suzana, Anđelković Ljubica, Jeremić Dejan, Vulić Predrag, Nikolić Aleksandar, Marković Smilja, Paunović Vesna, Lević Steva, Pavlović Vladimir B., "Structure and Properties of Nanocrystalline Tetragonal BaTiO3 Prepared by Combustion Solid State Synthesis" Science of Sintering, 52 (2020):257-268,
https://doi.org/10.2298/SOS2003257F .

Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics

Kosanović, Darko; Labus, Nebojša; Živojinović, Jelena; Peleš Tadić, Adriana; Blagojević, Vladimir A.; Pavlović, Vladimir B.

(Belgrade : ETRAN, 2020)

TY  - JOUR
AU  - Kosanović, Darko
AU  - Labus, Nebojša
AU  - Živojinović, Jelena
AU  - Peleš Tadić, Adriana
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vladimir B.
PY  - 2020
AB  - The influence of mechanical activation on the formation, sintering kinetics and morphology was investigated in sintered barium strontium titanate (BST) ceramics with different Ba-to-Sr ratios. Initial powders were mechanically activated for 20 and 120 min, leading to mechano-chemical reaction and formation of BaxSr1-xTiO3 phases. Agglomeration was found to represent an important factor in the process of formation of BaxSr1-xTiO3 phases around 800 oC and during sintering. It reduces the effectiveness of mechanical activation on formation of BaxSr1-xTiO3 phases beyond the short period (20 min), while in the process of sintering, prolonged mechanical activation (120 min) leads to a significant reduction in sintering temperature and the corresponding value of activation energy. In addition, all three systems show a phase transformation around 1100 oC, attributed to the hexagonal-to-cubic phase transition. Morphology of the final sintered ceramics can be correlated primarily with the state of the pre-sintered powder, where mechanically activated powders with smaller particle size produced more compact and less porous final product.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics
SP  - 371
EP  - 385
VL  - 52
IS  - 4
DO  - 10.2298/SOS2004371K
ER  - 
@article{
author = "Kosanović, Darko and Labus, Nebojša and Živojinović, Jelena and Peleš Tadić, Adriana and Blagojević, Vladimir A. and Pavlović, Vladimir B.",
year = "2020",
abstract = "The influence of mechanical activation on the formation, sintering kinetics and morphology was investigated in sintered barium strontium titanate (BST) ceramics with different Ba-to-Sr ratios. Initial powders were mechanically activated for 20 and 120 min, leading to mechano-chemical reaction and formation of BaxSr1-xTiO3 phases. Agglomeration was found to represent an important factor in the process of formation of BaxSr1-xTiO3 phases around 800 oC and during sintering. It reduces the effectiveness of mechanical activation on formation of BaxSr1-xTiO3 phases beyond the short period (20 min), while in the process of sintering, prolonged mechanical activation (120 min) leads to a significant reduction in sintering temperature and the corresponding value of activation energy. In addition, all three systems show a phase transformation around 1100 oC, attributed to the hexagonal-to-cubic phase transition. Morphology of the final sintered ceramics can be correlated primarily with the state of the pre-sintered powder, where mechanically activated powders with smaller particle size produced more compact and less porous final product.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics",
pages = "371-385",
volume = "52",
number = "4",
doi = "10.2298/SOS2004371K"
}
Kosanović, D., Labus, N., Živojinović, J., Peleš Tadić, A., Blagojević, V. A.,& Pavlović, V. B. (2020). Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics.
Science of Sintering
Belgrade : ETRAN., 52(4), 371-385.
https://doi.org/10.2298/SOS2004371K
Kosanović D, Labus N, Živojinović J, Peleš Tadić A, Blagojević VA, Pavlović VB. Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics. Science of Sintering. 2020;52(4):371-385.
doi:10.2298/SOS2004371K.
Kosanović Darko, Labus Nebojša, Živojinović Jelena, Peleš Tadić Adriana, Blagojević Vladimir A., Pavlović Vladimir B., "Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics" Science of Sintering, 52, no. 4 (2020):371-385,
https://doi.org/10.2298/SOS2004371K .

Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal

Obradović, Nina; Rusmirović, Jelena; Filipović, Suzana; Kosanović, Darko; Marinković, Aleksandar; Radić, Danka; Pavlović, Vladimir B.

(Desalination Publications, 2020)

TY  - JOUR
AU  - Obradović, Nina
AU  - Rusmirović, Jelena
AU  - Filipović, Suzana
AU  - Kosanović, Darko
AU  - Marinković, Aleksandar
AU  - Radić, Danka
AU  - Pavlović, Vladimir B.
PY  - 2020
AB  - Industrial/technological growth is directly connected with environmental pollution, but its influence can be minimized through pollution abatement approaches such as the treatment of industrial wastewater. In this study, novel porous amine-functionalized silicate minerals, specifically, cordierite was investigated for the removal of toxic heavy metals from industrial wastewaters. Cordierite supports were synthesized by mixing MgO, Al2O3 , and SiO2 powders in 2:2:5 molar ratios, and mechanically activated via ball milling in ethanol for 10, 40, or 80 min. Pellets were sintered by heating in air at 20°C min-1 to 1,350°C, for 2 h. Porous supports were produced by coarsely crushing the sintered pellets and mixing the crushed and sieved cordierite powder with 20 wt.% of a pore-forming agent, either nanocellulose or yeast. The resulting pellets were sintered by heating at 5°C min-1 to 700°C in air. The synthetic cordierite support was modified by treatment in poly-ethylenimine. Activated supports were then tested for the removal of Ni2+ and Cd2+ ions. The phase composition of the cordierite supports was analyzed by the X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy. Analysis of adsorption isotherms, kinetics, and thermodynamic parameters indicated that adsorption was a spontaneous, endothermic process with a maximum adsorption capacity of 36 mg g-1 for Cd2+ and 43 mg g-1 for Ni2+. This work has shed light on the mechanism of heavy metal removal from the aquatic medium using the novel hybrid functionalized cordierite-based ceramic.
PB  - Desalination Publications
T2  - Desalination and Water Treatment
T1  - Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal
SP  - 283
EP  - 296
VL  - 192
DO  - 10.5004/dwt.2020.25736
ER  - 
@article{
author = "Obradović, Nina and Rusmirović, Jelena and Filipović, Suzana and Kosanović, Darko and Marinković, Aleksandar and Radić, Danka and Pavlović, Vladimir B.",
year = "2020",
abstract = "Industrial/technological growth is directly connected with environmental pollution, but its influence can be minimized through pollution abatement approaches such as the treatment of industrial wastewater. In this study, novel porous amine-functionalized silicate minerals, specifically, cordierite was investigated for the removal of toxic heavy metals from industrial wastewaters. Cordierite supports were synthesized by mixing MgO, Al2O3 , and SiO2 powders in 2:2:5 molar ratios, and mechanically activated via ball milling in ethanol for 10, 40, or 80 min. Pellets were sintered by heating in air at 20°C min-1 to 1,350°C, for 2 h. Porous supports were produced by coarsely crushing the sintered pellets and mixing the crushed and sieved cordierite powder with 20 wt.% of a pore-forming agent, either nanocellulose or yeast. The resulting pellets were sintered by heating at 5°C min-1 to 700°C in air. The synthetic cordierite support was modified by treatment in poly-ethylenimine. Activated supports were then tested for the removal of Ni2+ and Cd2+ ions. The phase composition of the cordierite supports was analyzed by the X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy. Analysis of adsorption isotherms, kinetics, and thermodynamic parameters indicated that adsorption was a spontaneous, endothermic process with a maximum adsorption capacity of 36 mg g-1 for Cd2+ and 43 mg g-1 for Ni2+. This work has shed light on the mechanism of heavy metal removal from the aquatic medium using the novel hybrid functionalized cordierite-based ceramic.",
publisher = "Desalination Publications",
journal = "Desalination and Water Treatment",
title = "Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal",
pages = "283-296",
volume = "192",
doi = "10.5004/dwt.2020.25736"
}
Obradović, N., Rusmirović, J., Filipović, S., Kosanović, D., Marinković, A., Radić, D.,& Pavlović, V. B. (2020). Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal.
Desalination and Water Treatment
Desalination Publications., 192, 283-296.
https://doi.org/10.5004/dwt.2020.25736
Obradović N, Rusmirović J, Filipović S, Kosanović D, Marinković A, Radić D, Pavlović VB. Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal. Desalination and Water Treatment. 2020;192:283-296.
doi:10.5004/dwt.2020.25736.
Obradović Nina, Rusmirović Jelena, Filipović Suzana, Kosanović Darko, Marinković Aleksandar, Radić Danka, Pavlović Vladimir B., "Porous cordierite-supported polyethyleneimine composites for nickel(II) and cadmium(II) ions removal" Desalination and Water Treatment, 192 (2020):283-296,
https://doi.org/10.5004/dwt.2020.25736 .

Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry

Rajić, Vladimir; Stojković Simatović, Ivana; Veselinović, Ljiljana; Belošević Čavor, Jelena; Novaković, Mirjana; Popović, Maja; Škapin, Srečo Davor; Mojović, Miloš; Stojadinović, Stevan; Rac, Vladislav; Janković Častvan, Ivona; Marković, Smilja

(Royal Society of Chemistry, 2020)

TY  - JOUR
AU  - Rajić, Vladimir
AU  - Stojković Simatović, Ivana
AU  - Veselinović, Ljiljana
AU  - Belošević Čavor, Jelena
AU  - Novaković, Mirjana
AU  - Popović, Maja
AU  - Škapin, Srečo Davor
AU  - Mojović, Miloš
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Janković Častvan, Ivona
AU  - Marković, Smilja
PY  - 2020
AB  - Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.
PB  - Royal Society of Chemistry
T2  - Physical Chemistry Chemical Physics
T1  - Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry
SP  - 22078
EP  - 22095
VL  - 22
IS  - 38
DO  - 10.1039/D0CP03377D
ER  - 
@article{
author = "Rajić, Vladimir and Stojković Simatović, Ivana and Veselinović, Ljiljana and Belošević Čavor, Jelena and Novaković, Mirjana and Popović, Maja and Škapin, Srečo Davor and Mojović, Miloš and Stojadinović, Stevan and Rac, Vladislav and Janković Častvan, Ivona and Marković, Smilja",
year = "2020",
abstract = "Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.",
publisher = "Royal Society of Chemistry",
journal = "Physical Chemistry Chemical Physics",
title = "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry",
pages = "22078-22095",
volume = "22",
number = "38",
doi = "10.1039/D0CP03377D"
}
Rajić, V., Stojković Simatović, I., Veselinović, L., Belošević Čavor, J., Novaković, M., Popović, M., Škapin, S. D., Mojović, M., Stojadinović, S., Rac, V., Janković Častvan, I.,& Marković, S. (2020). Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry.
Physical Chemistry Chemical Physics
Royal Society of Chemistry., 22(38), 22078-22095.
https://doi.org/10.1039/D0CP03377D
Rajić V, Stojković Simatović I, Veselinović L, Belošević Čavor J, Novaković M, Popović M, Škapin SD, Mojović M, Stojadinović S, Rac V, Janković Častvan I, Marković S. Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry. Physical Chemistry Chemical Physics. 2020;22(38):22078-22095.
doi:10.1039/D0CP03377D.
Rajić Vladimir, Stojković Simatović Ivana, Veselinović Ljiljana, Belošević Čavor Jelena, Novaković Mirjana, Popović Maja, Škapin Srečo Davor, Mojović Miloš, Stojadinović Stevan, Rac Vladislav, Janković Častvan Ivona, Marković Smilja, "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry" Physical Chemistry Chemical Physics, 22, no. 38 (2020):22078-22095,
https://doi.org/10.1039/D0CP03377D .

Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry

Rajić, Vladimir; Stojković Simatović, Ivana; Veselinović, Ljiljana; Belošević Čavor, Jelena; Novaković, Mirjana; Popović, Maja; Škapin, Srečo Davor; Mojović, Miloš; Stojadinović, Stevan; Rac, Vladislav; Janković Častvan, Ivona; Marković, Smilja

(Royal Society of Chemistry, 2020)

TY  - JOUR
AU  - Rajić, Vladimir
AU  - Stojković Simatović, Ivana
AU  - Veselinović, Ljiljana
AU  - Belošević Čavor, Jelena
AU  - Novaković, Mirjana
AU  - Popović, Maja
AU  - Škapin, Srečo Davor
AU  - Mojović, Miloš
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Janković Častvan, Ivona
AU  - Marković, Smilja
PY  - 2020
AB  - Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.
PB  - Royal Society of Chemistry
T2  - Physical Chemistry Chemical Physics
T1  - Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry
SP  - 22078
EP  - 22095
VL  - 22
IS  - 38
DO  - 10.1039/D0CP03377D
ER  - 
@article{
author = "Rajić, Vladimir and Stojković Simatović, Ivana and Veselinović, Ljiljana and Belošević Čavor, Jelena and Novaković, Mirjana and Popović, Maja and Škapin, Srečo Davor and Mojović, Miloš and Stojadinović, Stevan and Rac, Vladislav and Janković Častvan, Ivona and Marković, Smilja",
year = "2020",
abstract = "Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.",
publisher = "Royal Society of Chemistry",
journal = "Physical Chemistry Chemical Physics",
title = "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry",
pages = "22078-22095",
volume = "22",
number = "38",
doi = "10.1039/D0CP03377D"
}
Rajić, V., Stojković Simatović, I., Veselinović, L., Belošević Čavor, J., Novaković, M., Popović, M., Škapin, S. D., Mojović, M., Stojadinović, S., Rac, V., Janković Častvan, I.,& Marković, S. (2020). Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry.
Physical Chemistry Chemical Physics
Royal Society of Chemistry., 22(38), 22078-22095.
https://doi.org/10.1039/D0CP03377D
Rajić V, Stojković Simatović I, Veselinović L, Belošević Čavor J, Novaković M, Popović M, Škapin SD, Mojović M, Stojadinović S, Rac V, Janković Častvan I, Marković S. Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry. Physical Chemistry Chemical Physics. 2020;22(38):22078-22095.
doi:10.1039/D0CP03377D.
Rajić Vladimir, Stojković Simatović Ivana, Veselinović Ljiljana, Belošević Čavor Jelena, Novaković Mirjana, Popović Maja, Škapin Srečo Davor, Mojović Miloš, Stojadinović Stevan, Rac Vladislav, Janković Častvan Ivona, Marković Smilja, "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry" Physical Chemistry Chemical Physics, 22, no. 38 (2020):22078-22095,
https://doi.org/10.1039/D0CP03377D .

Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite

Nikolić, Maria Vesna; Vasiljević, Zorka Ž.; Dojčinović, Milena; Vujančević, Jelena; Radovanović, Milan

(IEEE, 2020)

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Vujančević, Jelena
AU  - Radovanović, Milan
PY  - 2020
AB  - This work deals with our continued research of oxide materials for potential application in gas/humidity sensing. We have made thick film samples using iron manganite powder synthesized by a sol-gel combustion method with a net-like structure, by screen printing on alumina substrate with PdAg interdigitated electrodes. The thick film samples were fired at two temperatures 600 and 800°C. The powder morphology was retained and only the organic compounds in the paste were burnt-out at 600°C, while at 800°C the thick film surface morphology was different where grain growth and individual particles can be observed. We measured complex impedance in a temperature and humidity chamber at room temperature (25°C) in the relative humidity range 30 – 90 % and frequency 100 Hz - 1 MHz. The thick film surface morphology has a significant influence on the effect of humidity on complex impedance. The complex impedance of thick films fired at 600°C was high and did not decrease noticeably with increase in relative humidity (RH), except for RH 80 and 90%, while thick film samples fired at 800°C had an overall lower impedance that reduced more noticeably with increase in RH 40–70% and even more for RH 80 and 90%.
PB  - IEEE
C3  - 2020 43rd International Spring Seminar on Electronics Technology (ISSE)
T1  - Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite
SP  - 1
EP  - 5
DO  - 10.1109/ISSE49702.2020.9120967
ER  - 
@conference{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Ž. and Dojčinović, Milena and Vujančević, Jelena and Radovanović, Milan",
year = "2020",
abstract = "This work deals with our continued research of oxide materials for potential application in gas/humidity sensing. We have made thick film samples using iron manganite powder synthesized by a sol-gel combustion method with a net-like structure, by screen printing on alumina substrate with PdAg interdigitated electrodes. The thick film samples were fired at two temperatures 600 and 800°C. The powder morphology was retained and only the organic compounds in the paste were burnt-out at 600°C, while at 800°C the thick film surface morphology was different where grain growth and individual particles can be observed. We measured complex impedance in a temperature and humidity chamber at room temperature (25°C) in the relative humidity range 30 – 90 % and frequency 100 Hz - 1 MHz. The thick film surface morphology has a significant influence on the effect of humidity on complex impedance. The complex impedance of thick films fired at 600°C was high and did not decrease noticeably with increase in relative humidity (RH), except for RH 80 and 90%, while thick film samples fired at 800°C had an overall lower impedance that reduced more noticeably with increase in RH 40–70% and even more for RH 80 and 90%.",
publisher = "IEEE",
journal = "2020 43rd International Spring Seminar on Electronics Technology (ISSE)",
title = "Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite",
pages = "1-5",
doi = "10.1109/ISSE49702.2020.9120967"
}
Nikolić, M. V., Vasiljević, Z. Ž., Dojčinović, M., Vujančević, J.,& Radovanović, M. (2020). Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite.
2020 43rd International Spring Seminar on Electronics Technology (ISSE)
IEEE., 1-5.
https://doi.org/10.1109/ISSE49702.2020.9120967
Nikolić MV, Vasiljević ZŽ, Dojčinović M, Vujančević J, Radovanović M. Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite. 2020 43rd International Spring Seminar on Electronics Technology (ISSE). 2020;:1-5.
doi:10.1109/ISSE49702.2020.9120967.
Nikolić Maria Vesna, Vasiljević Zorka Ž., Dojčinović Milena, Vujančević Jelena, Radovanović Milan, "Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite" 2020 43rd International Spring Seminar on Electronics Technology (ISSE) (2020):1-5,
https://doi.org/10.1109/ISSE49702.2020.9120967 .

Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite

Nikolić, Maria Vesna; Vasiljević, Zorka Ž.; Dojčinović, Milena P.; Vujančević, Jelena; Radovanović, Milan

(IEEE, 2020)

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena P.
AU  - Vujančević, Jelena
AU  - Radovanović, Milan
PY  - 2020
AB  - This work deals with our continued research of oxide materials for potential application in gas/humidity sensing. We have made thick film samples using iron manganite powder synthesized by a sol-gel combustion method with a net-like structure, by screen printing on alumina substrate with PdAg interdigitated electrodes. The thick film samples were fired at two temperatures 600 and 800°C. The powder morphology was retained and only the organic compounds in the paste were burnt-out at 600°C, while at 800°C the thick film surface morphology was different where grain growth and individual particles can be observed. We measured complex impedance in a temperature and humidity chamber at room temperature (25°C) in the relative humidity range 30 – 90 % and frequency 100 Hz - 1 MHz. The thick film surface morphology has a significant influence on the effect of humidity on complex impedance. The complex impedance of thick films fired at 600°C was high and did not decrease noticeably with increase in relative humidity (RH), except for RH 80 and 90%, while thick film samples fired at 800°C had an overall lower impedance that reduced more noticeably with increase in RH 40–70% and even more for RH 80 and 90%.
PB  - IEEE
C3  - 2020 43rd International Spring Seminar on Electronics Technology (ISSE)
T1  - Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite
SP  - 1
EP  - 5
DO  - 10.1109/ISSE49702.2020.9120967
ER  - 
@conference{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Ž. and Dojčinović, Milena P. and Vujančević, Jelena and Radovanović, Milan",
year = "2020",
abstract = "This work deals with our continued research of oxide materials for potential application in gas/humidity sensing. We have made thick film samples using iron manganite powder synthesized by a sol-gel combustion method with a net-like structure, by screen printing on alumina substrate with PdAg interdigitated electrodes. The thick film samples were fired at two temperatures 600 and 800°C. The powder morphology was retained and only the organic compounds in the paste were burnt-out at 600°C, while at 800°C the thick film surface morphology was different where grain growth and individual particles can be observed. We measured complex impedance in a temperature and humidity chamber at room temperature (25°C) in the relative humidity range 30 – 90 % and frequency 100 Hz - 1 MHz. The thick film surface morphology has a significant influence on the effect of humidity on complex impedance. The complex impedance of thick films fired at 600°C was high and did not decrease noticeably with increase in relative humidity (RH), except for RH 80 and 90%, while thick film samples fired at 800°C had an overall lower impedance that reduced more noticeably with increase in RH 40–70% and even more for RH 80 and 90%.",
publisher = "IEEE",
journal = "2020 43rd International Spring Seminar on Electronics Technology (ISSE)",
title = "Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite",
pages = "1-5",
doi = "10.1109/ISSE49702.2020.9120967"
}
Nikolić, M. V., Vasiljević, Z. Ž., Dojčinović, M. P., Vujančević, J.,& Radovanović, M. (2020). Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite.
2020 43rd International Spring Seminar on Electronics Technology (ISSE)
IEEE., 1-5.
https://doi.org/10.1109/ISSE49702.2020.9120967
Nikolić MV, Vasiljević ZŽ, Dojčinović MP, Vujančević J, Radovanović M. Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite. 2020 43rd International Spring Seminar on Electronics Technology (ISSE). 2020;:1-5.
doi:10.1109/ISSE49702.2020.9120967.
Nikolić Maria Vesna, Vasiljević Zorka Ž., Dojčinović Milena P., Vujančević Jelena, Radovanović Milan, "Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite" 2020 43rd International Spring Seminar on Electronics Technology (ISSE) (2020):1-5,
https://doi.org/10.1109/ISSE49702.2020.9120967 .

Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

Vasiljević, Zorka Ž.; Dojčinović, Milena; Vujančević, Jelena; Janković Častvan, Ivona; Ognjanović, M.; Tadić, N.; Stojadinović, S.; Branković, Goran; Nikolić, Maria Vesna

(Royal Society, 2020)

TY  - JOUR
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Vujančević, Jelena
AU  - Janković Častvan, Ivona
AU  - Ognjanović, M.
AU  - Tadić, N.
AU  - Stojadinović, S.
AU  - Branković, Goran
AU  - Nikolić, Maria Vesna
PY  - 2020
AB  - The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.
PB  - Royal Society
T2  - Royal Society Open Science
T1  - Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method
VL  - 7
IS  - 9
DO  - 10.1098/rsos.200708
ER  - 
@article{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena and Vujančević, Jelena and Janković Častvan, Ivona and Ognjanović, M. and Tadić, N. and Stojadinović, S. and Branković, Goran and Nikolić, Maria Vesna",
year = "2020",
abstract = "The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.",
publisher = "Royal Society",
journal = "Royal Society Open Science",
title = "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method",
volume = "7",
number = "9",
doi = "10.1098/rsos.200708"
}
Vasiljević, Z. Ž., Dojčinović, M., Vujančević, J., Janković Častvan, I., Ognjanović, M., Tadić, N., Stojadinović, S., Branković, G.,& Nikolić, M. V. (2020). Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method.
Royal Society Open Science
Royal Society., 7(9).
https://doi.org/10.1098/rsos.200708
Vasiljević ZŽ, Dojčinović M, Vujančević J, Janković Častvan I, Ognjanović M, Tadić N, Stojadinović S, Branković G, Nikolić MV. Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method. Royal Society Open Science. 2020;7(9).
doi:10.1098/rsos.200708.
Vasiljević Zorka Ž., Dojčinović Milena, Vujančević Jelena, Janković Častvan Ivona, Ognjanović M., Tadić N., Stojadinović S., Branković Goran, Nikolić Maria Vesna, "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method" Royal Society Open Science, 7, no. 9 (2020),
https://doi.org/10.1098/rsos.200708 .
4