TY  - JOUR
AU  - Silin, Ivan
AU  - Dertmann, Christian
AU  - Cvetković, Vesna S.
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7432
AB  - This work includes a combined hydrometallurgical treatment of a eudialyte ore sample
with a subsequent preparation of leaching residue using mechanical separation methods. Hydrometallurgical treatment contains dry digestion with sulphuric acid at room temperature and filtration of the obtained product. The objectives of adopting these procedures are to test a new digestion reactor in order to prevent silica gel formation from the eudialyte ore. The obtained results revealed that silica gel formation is prevented during dissolution with sulphuric acid. A high leaching efficiency of light rare earth elements (La, Ce, Nd, Y) was reached using the dry digestion process with sulphuric acid, where the starting molarity was 12 mol/L. After the filtration process, magnetic separation is studied as the main method to recover weakly magnetic minerals like amphiboles and pyroxenes from the leaching residue in the magnetic fraction and feldspars in the nonmagnetic fraction. A new combined research strategy was developed for the production of different concentrates such as the one bearing Zr, Hf, and Nb.
PB  - MDPI
T2  - Minerals
T1  - Prevention of Silica Gel Formation for Eudialyte Study Using New Digestion Reactor
VL  - 14
IS  - 2
SP  - 124
DO  - 10.3390/min14020124
ER  - 

@article{
author = "Silin, Ivan and Dertmann, Christian and Cvetković, Vesna S. and Stopić, Srećko and Friedrich, Bernd",
year = "2024",
abstract = "This work includes a combined hydrometallurgical treatment of a eudialyte ore sample
with a subsequent preparation of leaching residue using mechanical separation methods. Hydrometallurgical treatment contains dry digestion with sulphuric acid at room temperature and filtration of the obtained product. The objectives of adopting these procedures are to test a new digestion reactor in order to prevent silica gel formation from the eudialyte ore. The obtained results revealed that silica gel formation is prevented during dissolution with sulphuric acid. A high leaching efficiency of light rare earth elements (La, Ce, Nd, Y) was reached using the dry digestion process with sulphuric acid, where the starting molarity was 12 mol/L. After the filtration process, magnetic separation is studied as the main method to recover weakly magnetic minerals like amphiboles and pyroxenes from the leaching residue in the magnetic fraction and feldspars in the nonmagnetic fraction. A new combined research strategy was developed for the production of different concentrates such as the one bearing Zr, Hf, and Nb.",
publisher = "MDPI",
journal = "Minerals",
title = "Prevention of Silica Gel Formation for Eudialyte Study Using New Digestion Reactor",
volume = "14",
number = "2",
pages = "124",
doi = "10.3390/min14020124"
}

Silin, I., Dertmann, C., Cvetković, V. S., Stopić, S.,& Friedrich, B.. (2024). Prevention of Silica Gel Formation for Eudialyte Study Using New Digestion Reactor. in Minerals
MDPI., 14(2), 124.
https://doi.org/10.3390/min14020124

Silin I, Dertmann C, Cvetković VS, Stopić S, Friedrich B. Prevention of Silica Gel Formation for Eudialyte Study Using New Digestion Reactor. in Minerals. 2024;14(2):124.
doi:10.3390/min14020124 .

Silin, Ivan, Dertmann, Christian, Cvetković, Vesna S., Stopić, Srećko, Friedrich, Bernd, "Prevention of Silica Gel Formation for Eudialyte Study Using New Digestion Reactor" in Minerals, 14, no. 2 (2024):124,
https://doi.org/10.3390/min14020124 . .

TY  - JOUR
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan
AU  - Feldhaus, Dominic
AU  - Cvetković, Vesna S.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5788
AB  - Advancements in technologies related to the electrorefining and electrodeposition
of metals—as important manufacturing process steps—continue to receive significant
attention. Specifically, novel ideas that focus on the development of new approaches
to the electrochemical synthesis of alloys and composites are important for advancing
technologies that can promote increased supply sustainability in the future. This Special
Issue, “Advances in understanding metal electrolysis process”, aims at the fundamental
level of research with respect to novel approaches in areas of electrolysis and electrochemical
mechanisms as well as their impact on the efficiency and quality of metal deposition. It
consists of ten papers addressing various issues and their possible solutions around the
electrolysis/-deposition of aluminum, copper, indium, rare earth metals, and their alloys,
including Zn-Co coatings. One review paper provides an overview of the structure of metal
powders produced by electrochemical methods.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Metals
T1  - Advances in Understanding Metal Electrolysis Process
VL  - 13
IS  - 2
SP  - 307
DO  - 10.3390/met13020307
ER  - 

@article{
author = "Friedrich, Bernd and Jovićević, Jovan and Feldhaus, Dominic and Cvetković, Vesna S.",
year = "2023",
abstract = "Advancements in technologies related to the electrorefining and electrodeposition
of metals—as important manufacturing process steps—continue to receive significant
attention. Specifically, novel ideas that focus on the development of new approaches
to the electrochemical synthesis of alloys and composites are important for advancing
technologies that can promote increased supply sustainability in the future. This Special
Issue, “Advances in understanding metal electrolysis process”, aims at the fundamental
level of research with respect to novel approaches in areas of electrolysis and electrochemical
mechanisms as well as their impact on the efficiency and quality of metal deposition. It
consists of ten papers addressing various issues and their possible solutions around the
electrolysis/-deposition of aluminum, copper, indium, rare earth metals, and their alloys,
including Zn-Co coatings. One review paper provides an overview of the structure of metal
powders produced by electrochemical methods.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Metals",
title = "Advances in Understanding Metal Electrolysis Process",
volume = "13",
number = "2",
pages = "307",
doi = "10.3390/met13020307"
}

Friedrich, B., Jovićević, J., Feldhaus, D.,& Cvetković, V. S.. (2023). Advances in Understanding Metal Electrolysis Process. in Metals
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 13(2), 307.
https://doi.org/10.3390/met13020307

Friedrich B, Jovićević J, Feldhaus D, Cvetković VS. Advances in Understanding Metal Electrolysis Process. in Metals. 2023;13(2):307.
doi:10.3390/met13020307 .

Friedrich, Bernd, Jovićević, Jovan, Feldhaus, Dominic, Cvetković, Vesna S., "Advances in Understanding Metal Electrolysis Process" in Metals, 13, no. 2 (2023):307,
https://doi.org/10.3390/met13020307 . .

TY  - JOUR
AU  - Chung, Hanwen
AU  - Prasakti, Laras
AU  - Stopić, Srećko
AU  - Feldhaus, Dominic
AU  - Cvetković, Vesna S.
AU  - Friedrich, Bernd
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6107
AB  - The results obtained from the work on a concept of a recycling process for NdFeB magnets
to recover rare earth elements for remanufacturing similar magnets are presented. This paper
investigates the viability of extracting rare earth metals from magnet recycling-derived oxide (MRDO) by means of molten salt electrolysis. The MRDO was produced from spent NdFeB magnets through oxidation in air and subsequently carbothermic reduction under an 80 mbar Ar gas atmosphere. This MRDO contained roughly 33 wt.% Nd and 10 wt.% Pr. The electrochemical reduction process of the MRDO on molybdenum electrodes in NdF3 + LiF and NdF3 + PrF3 + LiF fused salts systems was investigated by cyclic voltammetry and chronoamperometry measurements. The resulting electrolytes and electrodes were examined after potentiostatic deposition by scanning electron microscopy (SEM), inductively coupled plasma optical emission spectroscopy (ICP-OES), and X-ray diffraction (XRD) analysis. The electrodeposited metals appeared to accumulate on the cathode and X-ray diffraction analysis confirmed the formation of metallic Nd and Pr on the working substrate. The suitability of the obtained alloy intended for the remanufacturing of NdFeB magnets was then evaluated.
PB  - MDPI
T2  - Metals
T1  - Recovery of Rare Earth Elements from Spent NdFeB Magnets: Metal Extraction by Molten Salt Electrolysis (Third Part)
VL  - 13
IS  - 3
SP  - 559
DO  - https://doi.org/10.3390/met13030559
ER  - 

@article{
author = "Chung, Hanwen and Prasakti, Laras and Stopić, Srećko and Feldhaus, Dominic and Cvetković, Vesna S. and Friedrich, Bernd",
year = "2023",
abstract = "The results obtained from the work on a concept of a recycling process for NdFeB magnets
to recover rare earth elements for remanufacturing similar magnets are presented. This paper
investigates the viability of extracting rare earth metals from magnet recycling-derived oxide (MRDO) by means of molten salt electrolysis. The MRDO was produced from spent NdFeB magnets through oxidation in air and subsequently carbothermic reduction under an 80 mbar Ar gas atmosphere. This MRDO contained roughly 33 wt.% Nd and 10 wt.% Pr. The electrochemical reduction process of the MRDO on molybdenum electrodes in NdF3 + LiF and NdF3 + PrF3 + LiF fused salts systems was investigated by cyclic voltammetry and chronoamperometry measurements. The resulting electrolytes and electrodes were examined after potentiostatic deposition by scanning electron microscopy (SEM), inductively coupled plasma optical emission spectroscopy (ICP-OES), and X-ray diffraction (XRD) analysis. The electrodeposited metals appeared to accumulate on the cathode and X-ray diffraction analysis confirmed the formation of metallic Nd and Pr on the working substrate. The suitability of the obtained alloy intended for the remanufacturing of NdFeB magnets was then evaluated.",
publisher = "MDPI",
journal = "Metals",
title = "Recovery of Rare Earth Elements from Spent NdFeB Magnets: Metal Extraction by Molten Salt Electrolysis (Third Part)",
volume = "13",
number = "3",
pages = "559",
doi = "https://doi.org/10.3390/met13030559"
}

Chung, H., Prasakti, L., Stopić, S., Feldhaus, D., Cvetković, V. S.,& Friedrich, B.. (2023). Recovery of Rare Earth Elements from Spent NdFeB Magnets: Metal Extraction by Molten Salt Electrolysis (Third Part). in Metals
MDPI., 13(3), 559.
https://doi.org/https://doi.org/10.3390/met13030559

Chung H, Prasakti L, Stopić S, Feldhaus D, Cvetković VS, Friedrich B. Recovery of Rare Earth Elements from Spent NdFeB Magnets: Metal Extraction by Molten Salt Electrolysis (Third Part). in Metals. 2023;13(3):559.
doi:https://doi.org/10.3390/met13030559 .

Chung, Hanwen, Prasakti, Laras, Stopić, Srećko, Feldhaus, Dominic, Cvetković, Vesna S., Friedrich, Bernd, "Recovery of Rare Earth Elements from Spent NdFeB Magnets: Metal Extraction by Molten Salt Electrolysis (Third Part)" in Metals, 13, no. 3 (2023):559,
https://doi.org/https://doi.org/10.3390/met13030559 . .

TY  - CONF
AU  - Cvetković, Vesna S.
AU  - Petrović, Nataša M.
AU  - Feldhaus, Dominic
AU  - Prasakti, Laras
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan N.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6756
AB  - In the present work, we investigated the off-gas emission during the Nd and Pr electrodeposition from oxy- fluoride melts by the in-situ FTIR-spectrometry to understand the nature of the reactions taking place on the anode and the mechanisms behind them.
PB  - Skopje : Society of chemists and technologists of Macedonia
C3  - Book of abstracts - 26th Congress of Chemists and Technologysts of Macedonia, 20–23 September 2023, Metropol Lake Resort Ohrid, N. Macedonia
T1  - Greenhouse gas emission from the rare earth metals electrolysis
SP  - 141
EP  - 141
UR  - https://hdl.handle.net/21.15107/rcub_cer_6756
ER  - 

@conference{
author = "Cvetković, Vesna S. and Petrović, Nataša M. and Feldhaus, Dominic and Prasakti, Laras and Friedrich, Bernd and Jovićević, Jovan N.",
year = "2023",
abstract = "In the present work, we investigated the off-gas emission during the Nd and Pr electrodeposition from oxy- fluoride melts by the in-situ FTIR-spectrometry to understand the nature of the reactions taking place on the anode and the mechanisms behind them.",
publisher = "Skopje : Society of chemists and technologists of Macedonia",
journal = "Book of abstracts - 26th Congress of Chemists and Technologysts of Macedonia, 20–23 September 2023, Metropol Lake Resort Ohrid, N. Macedonia",
title = "Greenhouse gas emission from the rare earth metals electrolysis",
pages = "141-141",
url = "https://hdl.handle.net/21.15107/rcub_cer_6756"
}

Cvetković, V. S., Petrović, N. M., Feldhaus, D., Prasakti, L., Friedrich, B.,& Jovićević, J. N.. (2023). Greenhouse gas emission from the rare earth metals electrolysis. in Book of abstracts - 26th Congress of Chemists and Technologysts of Macedonia, 20–23 September 2023, Metropol Lake Resort Ohrid, N. Macedonia
Skopje : Society of chemists and technologists of Macedonia., 141-141.
https://hdl.handle.net/21.15107/rcub_cer_6756

Cvetković VS, Petrović NM, Feldhaus D, Prasakti L, Friedrich B, Jovićević JN. Greenhouse gas emission from the rare earth metals electrolysis. in Book of abstracts - 26th Congress of Chemists and Technologysts of Macedonia, 20–23 September 2023, Metropol Lake Resort Ohrid, N. Macedonia. 2023;:141-141.
https://hdl.handle.net/21.15107/rcub_cer_6756 .

Cvetković, Vesna S., Petrović, Nataša M., Feldhaus, Dominic, Prasakti, Laras, Friedrich, Bernd, Jovićević, Jovan N., "Greenhouse gas emission from the rare earth metals electrolysis" in Book of abstracts - 26th Congress of Chemists and Technologysts of Macedonia, 20–23 September 2023, Metropol Lake Resort Ohrid, N. Macedonia (2023):141-141,
https://hdl.handle.net/21.15107/rcub_cer_6756 .

TY  - JOUR
AU  - Alkan, Gözde
AU  - Košević, Milica
AU  - Mihailović, Marija
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
AU  - Stevanović, Jasmina
AU  - Panić, Vladimir
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5324
AB  - Polygonal Pt nanoparticles were synthesized using ultrasonic spray pyrolysis (USP) at different precursor concentrations. Physicochemical analysis of the synthesized Pt particles involved thermogravimetric, microscopic, electron diffractive, and light absorptive/refractive characteristics. Electrochemical properties and activity in the oxygen reduction reaction (ORR) of the prepared material were compared to commercial Pt black. Registered electrochemical behavior is correlated to the structural properties of synthesized powders by impedance characteristics in ORR. The reported results confirmed that Pt nanoparticles of a characteristic and uniform size and shape, suitable for incorporation on the surfaces of interactive hosts as catalyst supports, were synthesized. It is found that USP-synthesized Pt involves larger particles than Pt black, with the size being slightly dependent on precursor concentration. Among ORR-active planes, the least active (111) structurally defined the synthesized particles. These two morphological and structural characteristics caused the USP-Pt to be made of lower Pt-intrinsic capacitive and redox currents, as well as of lower ORR activity. Although being of lower activity, USP-Pt is less sensitive to the rate of ORR current perturbations at higher overpotentials. This issue is assigned to less-compact catalyst layers and uniform particle size distribution, and consequently, of activity throughout the catalyst layer with respect to Pt black. These features are considered to positively affect catalyst stability and thus promote USP synthesis for improved properties of host-supported Pt catalysts.
PB  - MDPI
T2  - Metals
T1  - Characterization of Defined Pt Particles Prepared by Ultrasonic Spray Pyrolysis for One-Step Synthesis of Supported ORR Composite Catalysts
VL  - 12
IS  - 2
SP  - 290
DO  - 10.3390/met12020290
ER  - 

@article{
author = "Alkan, Gözde and Košević, Milica and Mihailović, Marija and Stopić, Srećko and Friedrich, Bernd and Stevanović, Jasmina and Panić, Vladimir",
year = "2022",
abstract = "Polygonal Pt nanoparticles were synthesized using ultrasonic spray pyrolysis (USP) at different precursor concentrations. Physicochemical analysis of the synthesized Pt particles involved thermogravimetric, microscopic, electron diffractive, and light absorptive/refractive characteristics. Electrochemical properties and activity in the oxygen reduction reaction (ORR) of the prepared material were compared to commercial Pt black. Registered electrochemical behavior is correlated to the structural properties of synthesized powders by impedance characteristics in ORR. The reported results confirmed that Pt nanoparticles of a characteristic and uniform size and shape, suitable for incorporation on the surfaces of interactive hosts as catalyst supports, were synthesized. It is found that USP-synthesized Pt involves larger particles than Pt black, with the size being slightly dependent on precursor concentration. Among ORR-active planes, the least active (111) structurally defined the synthesized particles. These two morphological and structural characteristics caused the USP-Pt to be made of lower Pt-intrinsic capacitive and redox currents, as well as of lower ORR activity. Although being of lower activity, USP-Pt is less sensitive to the rate of ORR current perturbations at higher overpotentials. This issue is assigned to less-compact catalyst layers and uniform particle size distribution, and consequently, of activity throughout the catalyst layer with respect to Pt black. These features are considered to positively affect catalyst stability and thus promote USP synthesis for improved properties of host-supported Pt catalysts.",
publisher = "MDPI",
journal = "Metals",
title = "Characterization of Defined Pt Particles Prepared by Ultrasonic Spray Pyrolysis for One-Step Synthesis of Supported ORR Composite Catalysts",
volume = "12",
number = "2",
pages = "290",
doi = "10.3390/met12020290"
}

Alkan, G., Košević, M., Mihailović, M., Stopić, S., Friedrich, B., Stevanović, J.,& Panić, V.. (2022). Characterization of Defined Pt Particles Prepared by Ultrasonic Spray Pyrolysis for One-Step Synthesis of Supported ORR Composite Catalysts. in Metals
MDPI., 12(2), 290.
https://doi.org/10.3390/met12020290

Alkan G, Košević M, Mihailović M, Stopić S, Friedrich B, Stevanović J, Panić V. Characterization of Defined Pt Particles Prepared by Ultrasonic Spray Pyrolysis for One-Step Synthesis of Supported ORR Composite Catalysts. in Metals. 2022;12(2):290.
doi:10.3390/met12020290 .

Alkan, Gözde, Košević, Milica, Mihailović, Marija, Stopić, Srećko, Friedrich, Bernd, Stevanović, Jasmina, Panić, Vladimir, "Characterization of Defined Pt Particles Prepared by Ultrasonic Spray Pyrolysis for One-Step Synthesis of Supported ORR Composite Catalysts" in Metals, 12, no. 2 (2022):290,
https://doi.org/10.3390/met12020290 . .

TY  - JOUR
AU  - Mitterecker, Jonas
AU  - Košević, Milica
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
AU  - Panić, Vladimir
AU  - Stevanović, Jasmina
AU  - Mihailović, Marija
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5362
AB  - Determination of the extractive behavior of ionic species from lateritic ore leachates is complex, since the leachates are pregnant with tens of different ions in, as a rule, multiple oxide states. To examine the possible pathways of intrinsic electrochemical extraction of the crucial elements Ni and Co, it was necessary to make model solutions of these elements and to subject them to electrochemical examination techniques in order to obtain a benchmark. Beside Ni and Co, the model system for Fe had to be evaluated. Iron, as a dominant ore component by far, is the main interfering factor in the extraction processes of Ni and Co in rather low amounts from leaching solution. The leachate examination results were compared to separate model solutions, as well as to their combinations in concentrations and to pH values comparable to those of the leachate. The separation of the leachate components was initially performed by continuous increase in pH upon leaching with NaOH solution, and afterwards the pH-adjusted solutions were subjected to electrochemical investigation. With the purpose of connecting and quantifying the visual changes in leachate upon increase in pH, conductometric measurements were performed. Reactions of oxidation/precipitations were indicated, which led to the essential Fe removal by precipitation. Resulting solutions were found suitable for Ni and Co electrochemical extraction.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Metals
T1  - Electrochemical Investigation of Lateritic Ore Leaching Solutions for Ni and Co Ions Extraction
VL  - 12
IS  - 2
SP  - 325
DO  - 10.3390/met12020325
ER  - 

@article{
author = "Mitterecker, Jonas and Košević, Milica and Stopić, Srećko and Friedrich, Bernd and Panić, Vladimir and Stevanović, Jasmina and Mihailović, Marija",
year = "2022",
abstract = "Determination of the extractive behavior of ionic species from lateritic ore leachates is complex, since the leachates are pregnant with tens of different ions in, as a rule, multiple oxide states. To examine the possible pathways of intrinsic electrochemical extraction of the crucial elements Ni and Co, it was necessary to make model solutions of these elements and to subject them to electrochemical examination techniques in order to obtain a benchmark. Beside Ni and Co, the model system for Fe had to be evaluated. Iron, as a dominant ore component by far, is the main interfering factor in the extraction processes of Ni and Co in rather low amounts from leaching solution. The leachate examination results were compared to separate model solutions, as well as to their combinations in concentrations and to pH values comparable to those of the leachate. The separation of the leachate components was initially performed by continuous increase in pH upon leaching with NaOH solution, and afterwards the pH-adjusted solutions were subjected to electrochemical investigation. With the purpose of connecting and quantifying the visual changes in leachate upon increase in pH, conductometric measurements were performed. Reactions of oxidation/precipitations were indicated, which led to the essential Fe removal by precipitation. Resulting solutions were found suitable for Ni and Co electrochemical extraction.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Metals",
title = "Electrochemical Investigation of Lateritic Ore Leaching Solutions for Ni and Co Ions Extraction",
volume = "12",
number = "2",
pages = "325",
doi = "10.3390/met12020325"
}

Mitterecker, J., Košević, M., Stopić, S., Friedrich, B., Panić, V., Stevanović, J.,& Mihailović, M.. (2022). Electrochemical Investigation of Lateritic Ore Leaching Solutions for Ni and Co Ions Extraction. in Metals
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 12(2), 325.
https://doi.org/10.3390/met12020325

Mitterecker J, Košević M, Stopić S, Friedrich B, Panić V, Stevanović J, Mihailović M. Electrochemical Investigation of Lateritic Ore Leaching Solutions for Ni and Co Ions Extraction. in Metals. 2022;12(2):325.
doi:10.3390/met12020325 .

Mitterecker, Jonas, Košević, Milica, Stopić, Srećko, Friedrich, Bernd, Panić, Vladimir, Stevanović, Jasmina, Mihailović, Marija, "Electrochemical Investigation of Lateritic Ore Leaching Solutions for Ni and Co Ions Extraction" in Metals, 12, no. 2 (2022):325,
https://doi.org/10.3390/met12020325 . .

TY  - JOUR
AU  - Cvetković, Vesna S.
AU  - Feldhaus, Dominic
AU  - Vukićević, Nataša
AU  - Milićević-Neumann, Ksenija
AU  - Barudžija, Tanja S.
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5372
AB  - The impact of rare earth oxide (REO) concentration on the deposition process and selective recovery of the metal being deposited from a molten fluoride salt system was investigated by applying deposition of Nd and Pr and varying the concentration of REO added to the electrolyte. A ternary phase diagram for the liquidus temperature of the NdF3-PrF3-LiF system was constructed to better predict the optimal electrolyte constitution. Cyclic voltammetry was used to record three redox signals, reflecting the processes involving Nd(III)/Nd and Pr(III)/Pr transformations. A two-step red/ox process for Nd(III) ions and a single-step red/ox process for Pr(III) ions were confirmed by square-wave voltammetry. The cyclic voltammetry results indicated the possibility of neodymium and praseodymium co-deposition. In order to sustain higher co-deposition rates on the cathode and to avoid increased production of PFC greenhouse gases on the anode, a low-overpotential deposition technique was used for Nd and Pr electrodeposition from the electrolyte with varying Nd2O3 and Pr6O11 concentrations. Co-deposited neodymium and praseodymium metals were characterized by electron probe microanalysis (EPMA) and X-ray diffraction (XRD) analysis. After electrodeposition, concentration profiles of neodymium and praseodymium were recorded, starting from the cathode surface towards the electrolyte bulk. The working temperature of 1050 °C of the molten fluoride salt basic electrolyte, in line with the constructed phase diagram, was validated by improved co-deposition and led to a more effective deposition process.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Metals
T1  - Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts
VL  - 12
IS  - 7
SP  - 1204
DO  - 10.3390/met12071204
ER  - 

@article{
author = "Cvetković, Vesna S. and Feldhaus, Dominic and Vukićević, Nataša and Milićević-Neumann, Ksenija and Barudžija, Tanja S. and Friedrich, Bernd and Jovićević, Jovan",
year = "2022",
abstract = "The impact of rare earth oxide (REO) concentration on the deposition process and selective recovery of the metal being deposited from a molten fluoride salt system was investigated by applying deposition of Nd and Pr and varying the concentration of REO added to the electrolyte. A ternary phase diagram for the liquidus temperature of the NdF3-PrF3-LiF system was constructed to better predict the optimal electrolyte constitution. Cyclic voltammetry was used to record three redox signals, reflecting the processes involving Nd(III)/Nd and Pr(III)/Pr transformations. A two-step red/ox process for Nd(III) ions and a single-step red/ox process for Pr(III) ions were confirmed by square-wave voltammetry. The cyclic voltammetry results indicated the possibility of neodymium and praseodymium co-deposition. In order to sustain higher co-deposition rates on the cathode and to avoid increased production of PFC greenhouse gases on the anode, a low-overpotential deposition technique was used for Nd and Pr electrodeposition from the electrolyte with varying Nd2O3 and Pr6O11 concentrations. Co-deposited neodymium and praseodymium metals were characterized by electron probe microanalysis (EPMA) and X-ray diffraction (XRD) analysis. After electrodeposition, concentration profiles of neodymium and praseodymium were recorded, starting from the cathode surface towards the electrolyte bulk. The working temperature of 1050 °C of the molten fluoride salt basic electrolyte, in line with the constructed phase diagram, was validated by improved co-deposition and led to a more effective deposition process.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Metals",
title = "Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts",
volume = "12",
number = "7",
pages = "1204",
doi = "10.3390/met12071204"
}

Cvetković, V. S., Feldhaus, D., Vukićević, N., Milićević-Neumann, K., Barudžija, T. S., Friedrich, B.,& Jovićević, J.. (2022). Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts. in Metals
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 12(7), 1204.
https://doi.org/10.3390/met12071204

Cvetković VS, Feldhaus D, Vukićević N, Milićević-Neumann K, Barudžija TS, Friedrich B, Jovićević J. Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts. in Metals. 2022;12(7):1204.
doi:10.3390/met12071204 .

Cvetković, Vesna S., Feldhaus, Dominic, Vukićević, Nataša, Milićević-Neumann, Ksenija, Barudžija, Tanja S., Friedrich, Bernd, Jovićević, Jovan, "Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts" in Metals, 12, no. 7 (2022):1204,
https://doi.org/10.3390/met12071204 . .

TY  - CONF
AU  - Feldhaus, Dominic
AU  - Vukićević, Nataša
AU  - Cvetković, Vesna S.
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5847
AB  - In this work, the electrochemical reduction of Nd (III) and Pr(III) ions and consequent deposition 
of these metals from NdF3-PrF3-LiF molten salts containing rare earth oxides at 1050 °C on tungsten substrate was investigated. Additionally, the Nd and Pr ions electroreduction processes were studied by cyclic and square wave voltammetry, in the electrolytes with a concentration of rare earth oxides (REO) changed from 0.5wt% to 2wt%.
PB  - International Society of Electrochemistry
C3  - Program of the 31th Topical Meeting of the International Society of Electrochemistry, "Theory and Computation in Electrochemistry:  Seeking Synergies in Methods, Materials and Systems," 15-19 May 2022  Aachen, Germany
T1  - The study of Nd(III) and Pr(III) electrochemical reduction in molten fluoride salts
UR  - https://hdl.handle.net/21.15107/rcub_cer_5847
ER  - 

@conference{
author = "Feldhaus, Dominic and Vukićević, Nataša and Cvetković, Vesna S. and Friedrich, Bernd and Jovićević, Jovan",
year = "2022",
abstract = "In this work, the electrochemical reduction of Nd (III) and Pr(III) ions and consequent deposition 
of these metals from NdF3-PrF3-LiF molten salts containing rare earth oxides at 1050 °C on tungsten substrate was investigated. Additionally, the Nd and Pr ions electroreduction processes were studied by cyclic and square wave voltammetry, in the electrolytes with a concentration of rare earth oxides (REO) changed from 0.5wt% to 2wt%.",
publisher = "International Society of Electrochemistry",
journal = "Program of the 31th Topical Meeting of the International Society of Electrochemistry, "Theory and Computation in Electrochemistry:  Seeking Synergies in Methods, Materials and Systems," 15-19 May 2022  Aachen, Germany",
title = "The study of Nd(III) and Pr(III) electrochemical reduction in molten fluoride salts",
url = "https://hdl.handle.net/21.15107/rcub_cer_5847"
}

Feldhaus, D., Vukićević, N., Cvetković, V. S., Friedrich, B.,& Jovićević, J.. (2022). The study of Nd(III) and Pr(III) electrochemical reduction in molten fluoride salts. in Program of the 31th Topical Meeting of the International Society of Electrochemistry, "Theory and Computation in Electrochemistry:  Seeking Synergies in Methods, Materials and Systems," 15-19 May 2022  Aachen, Germany
International Society of Electrochemistry..
https://hdl.handle.net/21.15107/rcub_cer_5847

Feldhaus D, Vukićević N, Cvetković VS, Friedrich B, Jovićević J. The study of Nd(III) and Pr(III) electrochemical reduction in molten fluoride salts. in Program of the 31th Topical Meeting of the International Society of Electrochemistry, "Theory and Computation in Electrochemistry:  Seeking Synergies in Methods, Materials and Systems," 15-19 May 2022  Aachen, Germany. 2022;.
https://hdl.handle.net/21.15107/rcub_cer_5847 .

Feldhaus, Dominic, Vukićević, Nataša, Cvetković, Vesna S., Friedrich, Bernd, Jovićević, Jovan, "The study of Nd(III) and Pr(III) electrochemical reduction in molten fluoride salts" in Program of the 31th Topical Meeting of the International Society of Electrochemistry, "Theory and Computation in Electrochemistry:  Seeking Synergies in Methods, Materials and Systems," 15-19 May 2022  Aachen, Germany (2022),
https://hdl.handle.net/21.15107/rcub_cer_5847 .

TY  - CONF
AU  - Vukićević, Nataša
AU  - Feldhaus, Dominic
AU  - Cvetković, Vesna S.
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5848
AB  - In the present study we aim to provide an understanding of the electrochemical behaviour of neodymium and praseodymium in the fluoride based melts composition containing different LiF concentration. Comparison of the experimental results obtained from chosen electrolyte systems, should enable to precisely incorporate adjustable parameters which could favor more deposited neodymium and praseodymium metal remaining on an inert working substrate.
AB  - U ovom radu ispitivali smo elektrohemijsko ponašanje neodijuma i prazeodijuma u elektrolitima na bazi fluorida sa različitim koncentracijama LiF. Poređenje dobijenih eksperimentalnih rezultata iz izabranih elektrolita, trebalo bi da nam omogući optimizaciju parametara koji bi favorizovali veći prinos neodijuma i prazeodijuma na inertnoj radnoj elektrodi.
PB  - Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM
C3  - Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare
T1  - Electrochemical co-deposition of neodymium and praseodymium from oxyfluoride molten salts
SP  - poster 87
UR  - https://hdl.handle.net/21.15107/rcub_cer_5848
ER  - 

@conference{
author = "Vukićević, Nataša and Feldhaus, Dominic and Cvetković, Vesna S. and Friedrich, Bernd and Jovićević, Jovan",
year = "2022",
abstract = "In the present study we aim to provide an understanding of the electrochemical behaviour of neodymium and praseodymium in the fluoride based melts composition containing different LiF concentration. Comparison of the experimental results obtained from chosen electrolyte systems, should enable to precisely incorporate adjustable parameters which could favor more deposited neodymium and praseodymium metal remaining on an inert working substrate., U ovom radu ispitivali smo elektrohemijsko ponašanje neodijuma i prazeodijuma u elektrolitima na bazi fluorida sa različitim koncentracijama LiF. Poređenje dobijenih eksperimentalnih rezultata iz izabranih elektrolita, trebalo bi da nam omogući optimizaciju parametara koji bi favorizovali veći prinos neodijuma i prazeodijuma na inertnoj radnoj elektrodi.",
publisher = "Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM",
journal = "Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare",
title = "Electrochemical co-deposition of neodymium and praseodymium from oxyfluoride molten salts",
pages = "poster 87",
url = "https://hdl.handle.net/21.15107/rcub_cer_5848"
}

Vukićević, N., Feldhaus, D., Cvetković, V. S., Friedrich, B.,& Jovićević, J.. (2022). Electrochemical co-deposition of neodymium and praseodymium from oxyfluoride molten salts. in Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare
Beograd : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM., poster 87.
https://hdl.handle.net/21.15107/rcub_cer_5848

Vukićević N, Feldhaus D, Cvetković VS, Friedrich B, Jovićević J. Electrochemical co-deposition of neodymium and praseodymium from oxyfluoride molten salts. in Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare. 2022;:poster 87.
https://hdl.handle.net/21.15107/rcub_cer_5848 .

Vukićević, Nataša, Feldhaus, Dominic, Cvetković, Vesna S., Friedrich, Bernd, Jovićević, Jovan, "Electrochemical co-deposition of neodymium and praseodymium from oxyfluoride molten salts" in Proceedings - XXIII YuCorr International Conference, "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection", May 16-19, 2022, Divčibare, Serbia / Knjiga radova - XXIII YuCorr Međunarodna konferencija, "Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine", 16-19 Maj, 2022, Divčibare (2022):poster 87,
https://hdl.handle.net/21.15107/rcub_cer_5848 .

TY  - JOUR
AU  - Varničić, Miroslava
AU  - Pavlović, Miroslav M.
AU  - Eraković Pantović, Sanja
AU  - Mihailović, Marija
AU  - Pantović Pavlović, Marijana R.
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5371
AB  - Hybrid nanomaterials based on manganese, cobalt, and lanthanum oxides of different morphology and phase compositions were prepared using a facile single-step ultrasonic spray pyrolysis (USP) process and tested as electrocatalysts for oxygen reduction reaction (ORR). The structural and morphological characterizations were completed by XRD and SEM-EDS. Electrochemical performance was characterized by cyclic voltammetry and linear sweep voltammetry in a rotating disk electrode assembly. All synthesized materials were found electrocatalytically active for ORR in alkaline media. Two different manganese oxide states were incorporated into a Co3O4 matrix, δ-MnO2 at 500 and 600◦C and manganese (II,III) oxide-Mn3O4 at 800◦C. The difference in crystalline structure revealed flower-like nanosheets for birnessite-MnO2 and well-defined spherical nanoparticles for material based on Mn3O4. Electrochemical responses indicate that the ORR mechanism follows a preceding step of MnO2 reduction to MnOOH. The calculated number of electrons exchanged for the hybrid materials demonstrate a four-electron oxygen reduction pathway and high electrocatalytic activity towards ORR. The comparison of molar catalytic activities points out the importance of the composition and that the synergy of Co and Mn is superior to Co3O4/La2O3 and pristine Mn oxide. The results reveal that synthesized hybrid materials are promising electrocatalysts for ORR.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Metals
T1  - Spray-pyrolytic tunable structures of mn oxides-based composites for electrocatalytic activity improvement in oxygen reduction
VL  - 12
IS  - 1
SP  - 22
DO  - 10.3390/met12010022
ER  - 

@article{
author = "Varničić, Miroslava and Pavlović, Miroslav M. and Eraković Pantović, Sanja and Mihailović, Marija and Pantović Pavlović, Marijana R. and Stopić, Srećko and Friedrich, Bernd",
year = "2022",
abstract = "Hybrid nanomaterials based on manganese, cobalt, and lanthanum oxides of different morphology and phase compositions were prepared using a facile single-step ultrasonic spray pyrolysis (USP) process and tested as electrocatalysts for oxygen reduction reaction (ORR). The structural and morphological characterizations were completed by XRD and SEM-EDS. Electrochemical performance was characterized by cyclic voltammetry and linear sweep voltammetry in a rotating disk electrode assembly. All synthesized materials were found electrocatalytically active for ORR in alkaline media. Two different manganese oxide states were incorporated into a Co3O4 matrix, δ-MnO2 at 500 and 600◦C and manganese (II,III) oxide-Mn3O4 at 800◦C. The difference in crystalline structure revealed flower-like nanosheets for birnessite-MnO2 and well-defined spherical nanoparticles for material based on Mn3O4. Electrochemical responses indicate that the ORR mechanism follows a preceding step of MnO2 reduction to MnOOH. The calculated number of electrons exchanged for the hybrid materials demonstrate a four-electron oxygen reduction pathway and high electrocatalytic activity towards ORR. The comparison of molar catalytic activities points out the importance of the composition and that the synergy of Co and Mn is superior to Co3O4/La2O3 and pristine Mn oxide. The results reveal that synthesized hybrid materials are promising electrocatalysts for ORR.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Metals",
title = "Spray-pyrolytic tunable structures of mn oxides-based composites for electrocatalytic activity improvement in oxygen reduction",
volume = "12",
number = "1",
pages = "22",
doi = "10.3390/met12010022"
}

Varničić, M., Pavlović, M. M., Eraković Pantović, S., Mihailović, M., Pantović Pavlović, M. R., Stopić, S.,& Friedrich, B.. (2022). Spray-pyrolytic tunable structures of mn oxides-based composites for electrocatalytic activity improvement in oxygen reduction. in Metals
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 12(1), 22.
https://doi.org/10.3390/met12010022

Varničić M, Pavlović MM, Eraković Pantović S, Mihailović M, Pantović Pavlović MR, Stopić S, Friedrich B. Spray-pyrolytic tunable structures of mn oxides-based composites for electrocatalytic activity improvement in oxygen reduction. in Metals. 2022;12(1):22.
doi:10.3390/met12010022 .

Varničić, Miroslava, Pavlović, Miroslav M., Eraković Pantović, Sanja, Mihailović, Marija, Pantović Pavlović, Marijana R., Stopić, Srećko, Friedrich, Bernd, "Spray-pyrolytic tunable structures of mn oxides-based composites for electrocatalytic activity improvement in oxygen reduction" in Metals, 12, no. 1 (2022):22,
https://doi.org/10.3390/met12010022 . .

TY  - JOUR
AU  - Panić, Stefan
AU  - Pantović Pavlović, Marijana
AU  - Varničić, Miroslava
AU  - Tadić, Vojin
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
AU  - Pavlović, Miroslav M.
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5598
AB  - The main objective of this research was a systematic development of advanced micro/nanostructured materials based on the most used metal-oxides for ORR and metal-oxides with an extremely low-loading of Pt for comparison. Hybrid composites compared were: MnO2, La2O3, mixed lanthanum manganese oxides (LMO), and mixed lanthanum manganese oxides with reduced platinum load (LMO-Pt). The influence of the reduced amount of noble metal, as well as single oxide activity toward ORR, was analyzed. The complete electrochemical performance of the hybrid materials has been performed by means of CV, LSV, and EIS. It was shown that all synthesized catalytic materials were ORR-active with noticeable reduction currents in O2 saturated 0.1 M KOH. The ORR behavior indicated that the La2O3 electrode has a different mechanism than the other tested electrode materials (MnO2, LMO, and LMO-Pt). The EIS results have revealed that the ORR reaction is of a mixed character, being electrochemically and diffusion controlled. Even more, diffusion is of mixed character due to transport of O2 molecules and the chemical reaction of oxygen reduction. O2 diffusion was shown to be the dominant process for MnO2, LMO, and LMO-Pt electrolytic materials, while chemical reaction is the dominant process for La2O3 electrolytic materials.
PB  - MDPI AG
T2  - Catalysts
T1  - Rare-Earth/Manganese Oxide-Based Composites Materials for Electrochemical Oxygen Reduction Reaction
VL  - 12
IS  - 6
SP  - 641
DO  - 10.3390/catal12060641
ER  - 

@article{
author = "Panić, Stefan and Pantović Pavlović, Marijana and Varničić, Miroslava and Tadić, Vojin and Stopić, Srećko and Friedrich, Bernd and Pavlović, Miroslav M.",
year = "2022",
abstract = "The main objective of this research was a systematic development of advanced micro/nanostructured materials based on the most used metal-oxides for ORR and metal-oxides with an extremely low-loading of Pt for comparison. Hybrid composites compared were: MnO2, La2O3, mixed lanthanum manganese oxides (LMO), and mixed lanthanum manganese oxides with reduced platinum load (LMO-Pt). The influence of the reduced amount of noble metal, as well as single oxide activity toward ORR, was analyzed. The complete electrochemical performance of the hybrid materials has been performed by means of CV, LSV, and EIS. It was shown that all synthesized catalytic materials were ORR-active with noticeable reduction currents in O2 saturated 0.1 M KOH. The ORR behavior indicated that the La2O3 electrode has a different mechanism than the other tested electrode materials (MnO2, LMO, and LMO-Pt). The EIS results have revealed that the ORR reaction is of a mixed character, being electrochemically and diffusion controlled. Even more, diffusion is of mixed character due to transport of O2 molecules and the chemical reaction of oxygen reduction. O2 diffusion was shown to be the dominant process for MnO2, LMO, and LMO-Pt electrolytic materials, while chemical reaction is the dominant process for La2O3 electrolytic materials.",
publisher = "MDPI AG",
journal = "Catalysts",
title = "Rare-Earth/Manganese Oxide-Based Composites Materials for Electrochemical Oxygen Reduction Reaction",
volume = "12",
number = "6",
pages = "641",
doi = "10.3390/catal12060641"
}

Panić, S., Pantović Pavlović, M., Varničić, M., Tadić, V., Stopić, S., Friedrich, B.,& Pavlović, M. M.. (2022). Rare-Earth/Manganese Oxide-Based Composites Materials for Electrochemical Oxygen Reduction Reaction. in Catalysts
MDPI AG., 12(6), 641.
https://doi.org/10.3390/catal12060641

Panić S, Pantović Pavlović M, Varničić M, Tadić V, Stopić S, Friedrich B, Pavlović MM. Rare-Earth/Manganese Oxide-Based Composites Materials for Electrochemical Oxygen Reduction Reaction. in Catalysts. 2022;12(6):641.
doi:10.3390/catal12060641 .

Panić, Stefan, Pantović Pavlović, Marijana, Varničić, Miroslava, Tadić, Vojin, Stopić, Srećko, Friedrich, Bernd, Pavlović, Miroslav M., "Rare-Earth/Manganese Oxide-Based Composites Materials for Electrochemical Oxygen Reduction Reaction" in Catalysts, 12, no. 6 (2022):641,
https://doi.org/10.3390/catal12060641 . .

TY  - JOUR
AU  - Cvetković, Vesna S.
AU  - Feldhaus, Dominic
AU  - Vukićević, Nataša
AU  - Barudžija, Tanja S.
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan N.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4768
AB  - Electrodeposition processes of neodymium and praseodymium in molten NdF3 + PrF3 + LiF + 1 wt.%Pr6O11 + 1 wt.%Nd2O3 and NdF3 + PrF3 + LiF + 2 wt.%Pr6O11 + 2 wt.%Nd2O3 electrolytes at 1323 K were investigated. Cyclic voltammetry, square wave voltammetry, and open circuit potentiometry were applied to study the electrochemical reduction of Nd(III) and Pr(III) ions on Mo and W cathodes. It was established that a critical condition for Nd and Pr co-deposition in oxyfluoride electrolytes was a constant praseodymium deposition overpotential of ≈−0.100 V, which was shown to result in co-deposition current densities approaching 6 mAcm−2 . Analysis of the results obtained by applied electrochemical techniques showed that praseodymium deposition proceeds as a one-step process involving exchange of three electrons (Pr(III)→Pr(0)) and that neodymium deposition is a two-step process: the first involves one electron exchange (Nd(III)→Nd(II)), and the second involves an exchange of two electrons (Nd(II)→Nd(0)). X-ray diffraction analyses confirmed the formation of metallic Nd and Pr on the working substrate. Keeping the anodic potential to the glassy carbon working anode low results in very low levels of carbon oxides, fluorine and fluorocarbon gas emissions, which should qualify the studied system as an environmentally friendly option for rare earth metal deposition. The newly reported data for Nd and Pr metals co-deposition provide valuable information for the recycling of neodymium-iron-boron magnets.
PB  - MDPI
T2  - Metals
T1  - Electrochemical study of Nd and Pr co-deposition onto Mo and W from molten oxyfluorides
VL  - 11
IS  - 9
SP  - 1494
DO  - 10.3390/met11091494
ER  - 

@article{
author = "Cvetković, Vesna S. and Feldhaus, Dominic and Vukićević, Nataša and Barudžija, Tanja S. and Friedrich, Bernd and Jovićević, Jovan N.",
year = "2021",
abstract = "Electrodeposition processes of neodymium and praseodymium in molten NdF3 + PrF3 + LiF + 1 wt.%Pr6O11 + 1 wt.%Nd2O3 and NdF3 + PrF3 + LiF + 2 wt.%Pr6O11 + 2 wt.%Nd2O3 electrolytes at 1323 K were investigated. Cyclic voltammetry, square wave voltammetry, and open circuit potentiometry were applied to study the electrochemical reduction of Nd(III) and Pr(III) ions on Mo and W cathodes. It was established that a critical condition for Nd and Pr co-deposition in oxyfluoride electrolytes was a constant praseodymium deposition overpotential of ≈−0.100 V, which was shown to result in co-deposition current densities approaching 6 mAcm−2 . Analysis of the results obtained by applied electrochemical techniques showed that praseodymium deposition proceeds as a one-step process involving exchange of three electrons (Pr(III)→Pr(0)) and that neodymium deposition is a two-step process: the first involves one electron exchange (Nd(III)→Nd(II)), and the second involves an exchange of two electrons (Nd(II)→Nd(0)). X-ray diffraction analyses confirmed the formation of metallic Nd and Pr on the working substrate. Keeping the anodic potential to the glassy carbon working anode low results in very low levels of carbon oxides, fluorine and fluorocarbon gas emissions, which should qualify the studied system as an environmentally friendly option for rare earth metal deposition. The newly reported data for Nd and Pr metals co-deposition provide valuable information for the recycling of neodymium-iron-boron magnets.",
publisher = "MDPI",
journal = "Metals",
title = "Electrochemical study of Nd and Pr co-deposition onto Mo and W from molten oxyfluorides",
volume = "11",
number = "9",
pages = "1494",
doi = "10.3390/met11091494"
}

Cvetković, V. S., Feldhaus, D., Vukićević, N., Barudžija, T. S., Friedrich, B.,& Jovićević, J. N.. (2021). Electrochemical study of Nd and Pr co-deposition onto Mo and W from molten oxyfluorides. in Metals
MDPI., 11(9), 1494.
https://doi.org/10.3390/met11091494

Cvetković VS, Feldhaus D, Vukićević N, Barudžija TS, Friedrich B, Jovićević JN. Electrochemical study of Nd and Pr co-deposition onto Mo and W from molten oxyfluorides. in Metals. 2021;11(9):1494.
doi:10.3390/met11091494 .

Cvetković, Vesna S., Feldhaus, Dominic, Vukićević, Nataša, Barudžija, Tanja S., Friedrich, Bernd, Jovićević, Jovan N., "Electrochemical study of Nd and Pr co-deposition onto Mo and W from molten oxyfluorides" in Metals, 11, no. 9 (2021):1494,
https://doi.org/10.3390/met11091494 . .

TY  - CONF
AU  - Cvetković, Vesna S.
AU  - Feldhaus, Dominic
AU  - Vukićević, Nataša
AU  - Nikolić, Nebojša D.
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan N.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4887
AB  - Electrodeposition of neodymium and praseodymium metal from molten NdF3+PrF3+LiF+ 0.5wt.%Pr6O11+0.5wt.%Nd2O3 electrolytes on W was investigated using voltammetry at 1050 °C. The square wave voltammetry confirmed that Nd electrodeposition is a two-step reduction process: first, involving one electron exchange (Nd(III)→Nd(II)) and second, involving two electrons exchange (Nd(II)→Nd(0)). However, praseodymium deposition proceeds as an one-step process involving exchange of three electrons (Pr(III)→Pr(0)). Nd and Pr metals were electrodeposited applying potentiostatic mode. The working electrode surface was analyzed by X-ray diffraction after Nd and Pr co-deposition.
AB  - Elektrohemijsko taloženje neodijuma i prazeodijuma iz fluoridnog NdF3+PrF3+LiF+ 0.5wt.%Pr6O11+0.5wt.%Nd2O3 rastopa na W radnoj elektrodi ispitivano je pomoću voltametrijskih tehnika na 1050 °C. Voltametrija sa pravougaonim talasima (SWV, square wave voltammetry) potvrdila je da je elektrohemijsko taloženje Nd proces koji se odvija u dva koraka: prvi, uključuje razmenu od jednog elektrona (Nd(III) → Nd(II)) i drugi korak, uključuje razmenu dva elektrona (Nd(II) → Nd(0)). Međutim, taloženje prazeodijuma uključuje izmenu tri elektrona (Pr(III) → Pr(0)) u jednom koraku. Nd i Pr su elektrohemijski taloženi primenom potenciostatskog režima. Nakon elektrohemijskog taloženja Nd i Pr površina radne elektrode analizirana je rengensko-difrakcionom tehnikom.
PB  - Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)
C3  - Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija
T1  - Electrodeposition of Nd and Pr onto W from fluoride based melts
T1  - Elektrohemijsko taloženje Nd i Pr na W iz fluoridnih rastopa
SP  - 140
EP  - 144
UR  - https://hdl.handle.net/21.15107/rcub_cer_4887
ER  - 

@conference{
author = "Cvetković, Vesna S. and Feldhaus, Dominic and Vukićević, Nataša and Nikolić, Nebojša D. and Friedrich, Bernd and Jovićević, Jovan N.",
year = "2021",
abstract = "Electrodeposition of neodymium and praseodymium metal from molten NdF3+PrF3+LiF+ 0.5wt.%Pr6O11+0.5wt.%Nd2O3 electrolytes on W was investigated using voltammetry at 1050 °C. The square wave voltammetry confirmed that Nd electrodeposition is a two-step reduction process: first, involving one electron exchange (Nd(III)→Nd(II)) and second, involving two electrons exchange (Nd(II)→Nd(0)). However, praseodymium deposition proceeds as an one-step process involving exchange of three electrons (Pr(III)→Pr(0)). Nd and Pr metals were electrodeposited applying potentiostatic mode. The working electrode surface was analyzed by X-ray diffraction after Nd and Pr co-deposition., Elektrohemijsko taloženje neodijuma i prazeodijuma iz fluoridnog NdF3+PrF3+LiF+ 0.5wt.%Pr6O11+0.5wt.%Nd2O3 rastopa na W radnoj elektrodi ispitivano je pomoću voltametrijskih tehnika na 1050 °C. Voltametrija sa pravougaonim talasima (SWV, square wave voltammetry) potvrdila je da je elektrohemijsko taloženje Nd proces koji se odvija u dva koraka: prvi, uključuje razmenu od jednog elektrona (Nd(III) → Nd(II)) i drugi korak, uključuje razmenu dva elektrona (Nd(II) → Nd(0)). Međutim, taloženje prazeodijuma uključuje izmenu tri elektrona (Pr(III) → Pr(0)) u jednom koraku. Nd i Pr su elektrohemijski taloženi primenom potenciostatskog režima. Nakon elektrohemijskog taloženja Nd i Pr površina radne elektrode analizirana je rengensko-difrakcionom tehnikom.",
publisher = "Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)",
journal = "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija",
title = "Electrodeposition of Nd and Pr onto W from fluoride based melts, Elektrohemijsko taloženje Nd i Pr na W iz fluoridnih rastopa",
pages = "140-144",
url = "https://hdl.handle.net/21.15107/rcub_cer_4887"
}

Cvetković, V. S., Feldhaus, D., Vukićević, N., Nikolić, N. D., Friedrich, B.,& Jovićević, J. N.. (2021). Electrodeposition of Nd and Pr onto W from fluoride based melts. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija
Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)., 140-144.
https://hdl.handle.net/21.15107/rcub_cer_4887

Cvetković VS, Feldhaus D, Vukićević N, Nikolić ND, Friedrich B, Jovićević JN. Electrodeposition of Nd and Pr onto W from fluoride based melts. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija. 2021;:140-144.
https://hdl.handle.net/21.15107/rcub_cer_4887 .

Cvetković, Vesna S., Feldhaus, Dominic, Vukićević, Nataša, Nikolić, Nebojša D., Friedrich, Bernd, Jovićević, Jovan N., "Electrodeposition of Nd and Pr onto W from fluoride based melts" in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija (2021):140-144,
https://hdl.handle.net/21.15107/rcub_cer_4887 .

TY  - CONF
AU  - Feldhaus, Dominic
AU  - Cvetković, Vesna S.
AU  - Vukićević, Nataša M.
AU  - Barudžija, Tanja S.
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan N.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6160
AB  - Neodymium and praseodymium were electrochemically co-deposited onto Mo cathode applying constant potential, from fluoride-based molten salts containing the corresponding rare earth oxides. According to the recorded voltammograms, it appears that in the investigated system, the electrodeposition of neodymium proceeds as a two-step reduction process: Nd(III)→Nd(II) and Nd(II)→Nd(0), whilst the praseodymium deposition proceeds as an one-step reduction process:
Pr(III)→Pr(0). However, it was also recognized that at the same time a substantial amount of NdF2
was formed as a result of the disproportionation reaction between the electrodeposited Nd metal and Nd(III) present in the electrolyte.
The deposit on the working electrode surface was recorded by optical microscopy and analyzed
by X-ray diffraction (XRD). The analysis made upon the applying the potentiostatic deposition regimehas shown Nd/Pr metals present on the molybdenum cathode.
PB  - Society of Physical Chemists of Serbia
C3  - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, "Physical Chemistry 2021," Belgrade, Serbia
T1  - Electrochemical deposition of neodymium and praseodymium on molybdenum from molten fluoride
VL  - I
SP  - 275
EP  - 278
UR  - https://hdl.handle.net/21.15107/rcub_cer_6160
ER  - 

@conference{
author = "Feldhaus, Dominic and Cvetković, Vesna S. and Vukićević, Nataša M. and Barudžija, Tanja S. and Friedrich, Bernd and Jovićević, Jovan N.",
year = "2021",
abstract = "Neodymium and praseodymium were electrochemically co-deposited onto Mo cathode applying constant potential, from fluoride-based molten salts containing the corresponding rare earth oxides. According to the recorded voltammograms, it appears that in the investigated system, the electrodeposition of neodymium proceeds as a two-step reduction process: Nd(III)→Nd(II) and Nd(II)→Nd(0), whilst the praseodymium deposition proceeds as an one-step reduction process:
Pr(III)→Pr(0). However, it was also recognized that at the same time a substantial amount of NdF2
was formed as a result of the disproportionation reaction between the electrodeposited Nd metal and Nd(III) present in the electrolyte.
The deposit on the working electrode surface was recorded by optical microscopy and analyzed
by X-ray diffraction (XRD). The analysis made upon the applying the potentiostatic deposition regimehas shown Nd/Pr metals present on the molybdenum cathode.",
publisher = "Society of Physical Chemists of Serbia",
journal = "15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, "Physical Chemistry 2021," Belgrade, Serbia",
title = "Electrochemical deposition of neodymium and praseodymium on molybdenum from molten fluoride",
volume = "I",
pages = "275-278",
url = "https://hdl.handle.net/21.15107/rcub_cer_6160"
}

Feldhaus, D., Cvetković, V. S., Vukićević, N. M., Barudžija, T. S., Friedrich, B.,& Jovićević, J. N.. (2021). Electrochemical deposition of neodymium and praseodymium on molybdenum from molten fluoride. in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, "Physical Chemistry 2021," Belgrade, Serbia
Society of Physical Chemists of Serbia., I, 275-278.
https://hdl.handle.net/21.15107/rcub_cer_6160

Feldhaus D, Cvetković VS, Vukićević NM, Barudžija TS, Friedrich B, Jovićević JN. Electrochemical deposition of neodymium and praseodymium on molybdenum from molten fluoride. in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, "Physical Chemistry 2021," Belgrade, Serbia. 2021;I:275-278.
https://hdl.handle.net/21.15107/rcub_cer_6160 .

Feldhaus, Dominic, Cvetković, Vesna S., Vukićević, Nataša M., Barudžija, Tanja S., Friedrich, Bernd, Jovićević, Jovan N., "Electrochemical deposition of neodymium and praseodymium on molybdenum from molten fluoride" in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, "Physical Chemistry 2021," Belgrade, Serbia, I (2021):275-278,
https://hdl.handle.net/21.15107/rcub_cer_6160 .

TY  - JOUR
AU  - Pavlović, Miroslav M.
AU  - Pantović Pavlović, Marijana
AU  - Eraković Pantović, Sanja G.
AU  - Stevanović, Jasmina S.
AU  - Stopić, Srećko R.
AU  - Friedrich, Bernd
AU  - Panić, Vladimir
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4792
AB  - The role and influence of strontium and its oxide on structure and capacitive response of materials containing mixed lanthanum cobalt oxides, LC, and lanthanum strontium cobalt oxides, LSC, as a capacitive materials were investigated in this study. The mixed oxides were synthesized by the single-step ultrasonic spray pyrolysis (USP) technique. The microstructures and electrochemical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, cyclic voltammetry, potentiostatic electrochemical impedance spectroscopy and galvanostatic charge/discharge cycling. It was found that strontium oxide induces the formation of the perovskite structure of promoted pseudocapacitive behavior over an enhancement of redox transitions of cobalt. The measurements showed that the capacitive stability and rate capability were lower for the samples of higher specific capacitance. Among the prepared materials, the LSC prepared at a USP temperature 600 °C showed the best capacitive characteristics in 0.10 M KOH due to having the most defined spherical perovskite structure leading to well-defined reversible charge–discharge performances.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior
VL  - 897
SP  - 115556
DO  - 10.1016/j.jelechem.2021.115556
ER  - 

@article{
author = "Pavlović, Miroslav M. and Pantović Pavlović, Marijana and Eraković Pantović, Sanja G. and Stevanović, Jasmina S. and Stopić, Srećko R. and Friedrich, Bernd and Panić, Vladimir",
year = "2021",
abstract = "The role and influence of strontium and its oxide on structure and capacitive response of materials containing mixed lanthanum cobalt oxides, LC, and lanthanum strontium cobalt oxides, LSC, as a capacitive materials were investigated in this study. The mixed oxides were synthesized by the single-step ultrasonic spray pyrolysis (USP) technique. The microstructures and electrochemical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, cyclic voltammetry, potentiostatic electrochemical impedance spectroscopy and galvanostatic charge/discharge cycling. It was found that strontium oxide induces the formation of the perovskite structure of promoted pseudocapacitive behavior over an enhancement of redox transitions of cobalt. The measurements showed that the capacitive stability and rate capability were lower for the samples of higher specific capacitance. Among the prepared materials, the LSC prepared at a USP temperature 600 °C showed the best capacitive characteristics in 0.10 M KOH due to having the most defined spherical perovskite structure leading to well-defined reversible charge–discharge performances.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior",
volume = "897",
pages = "115556",
doi = "10.1016/j.jelechem.2021.115556"
}

Pavlović, M. M., Pantović Pavlović, M., Eraković Pantović, S. G., Stevanović, J. S., Stopić, S. R., Friedrich, B.,& Panić, V.. (2021). The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior. in Journal of Electroanalytical Chemistry
Elsevier., 897, 115556.
https://doi.org/10.1016/j.jelechem.2021.115556

Pavlović MM, Pantović Pavlović M, Eraković Pantović SG, Stevanović JS, Stopić SR, Friedrich B, Panić V. The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior. in Journal of Electroanalytical Chemistry. 2021;897:115556.
doi:10.1016/j.jelechem.2021.115556 .

Pavlović, Miroslav M., Pantović Pavlović, Marijana, Eraković Pantović, Sanja G., Stevanović, Jasmina S., Stopić, Srećko R., Friedrich, Bernd, Panić, Vladimir, "The roles of constituting oxides in rare-earth cobaltite-based perovskites on their pseudocapacitive behavior" in Journal of Electroanalytical Chemistry, 897 (2021):115556,
https://doi.org/10.1016/j.jelechem.2021.115556 . .

TY  - JOUR
AU  - Cvetković, Vesna S.
AU  - Vukićević, Nataša
AU  - Feldhaus, Dominic
AU  - Milićević-Neumann, Ksenija
AU  - Barudžija, Tanja S.
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan N.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4054
AB  - The Al-V alloys were synthetized by potentiostatic electrodeposition onto a glassy carbon electrode from equimolar AlCl3 + NaCl bath containing vanadium ions at 200 °C. The alloy deposits were characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy. The deposits were identified as Al3V and AlV3 alloys. It was found that intermetallic alloys were synthetized during aluminium underpotential deposition onto vanadium metal that was previously deposited on the glassy carbon electrode by diffusion-controlled overpotential deposition. Alloys were the result of solid-state interdiffusion between the initially deposited vanadium and the subsequently deposited aluminium. As a source to secure a constant concentration of vanadium in the electrolyte during deposition, vanadium anodic dissolution, and VCl3 melt addition were studied. The effect of vanadium ion concentration in the electrolyte on the composition and the surface morphology of the obtained deposits was investigated. The results indicate that controlled vanadium and aluminium codeposition could be a further step to the successful development of an advanced technology for Al3V and AlV3 alloy synthesis.
PB  - MDPI
T2  - Metals
T1  - Electrodeposition of Aluminium-Vanadium Alloys from Chloroaluminate Based Molten Salt Containing Vanadium Ions
VL  - 11
IS  - 1
SP  - 123
DO  - 10.3390/met11010123
ER  - 

@article{
author = "Cvetković, Vesna S. and Vukićević, Nataša and Feldhaus, Dominic and Milićević-Neumann, Ksenija and Barudžija, Tanja S. and Friedrich, Bernd and Jovićević, Jovan N.",
year = "2021",
abstract = "The Al-V alloys were synthetized by potentiostatic electrodeposition onto a glassy carbon electrode from equimolar AlCl3 + NaCl bath containing vanadium ions at 200 °C. The alloy deposits were characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy. The deposits were identified as Al3V and AlV3 alloys. It was found that intermetallic alloys were synthetized during aluminium underpotential deposition onto vanadium metal that was previously deposited on the glassy carbon electrode by diffusion-controlled overpotential deposition. Alloys were the result of solid-state interdiffusion between the initially deposited vanadium and the subsequently deposited aluminium. As a source to secure a constant concentration of vanadium in the electrolyte during deposition, vanadium anodic dissolution, and VCl3 melt addition were studied. The effect of vanadium ion concentration in the electrolyte on the composition and the surface morphology of the obtained deposits was investigated. The results indicate that controlled vanadium and aluminium codeposition could be a further step to the successful development of an advanced technology for Al3V and AlV3 alloy synthesis.",
publisher = "MDPI",
journal = "Metals",
title = "Electrodeposition of Aluminium-Vanadium Alloys from Chloroaluminate Based Molten Salt Containing Vanadium Ions",
volume = "11",
number = "1",
pages = "123",
doi = "10.3390/met11010123"
}

Cvetković, V. S., Vukićević, N., Feldhaus, D., Milićević-Neumann, K., Barudžija, T. S., Friedrich, B.,& Jovićević, J. N.. (2021). Electrodeposition of Aluminium-Vanadium Alloys from Chloroaluminate Based Molten Salt Containing Vanadium Ions. in Metals
MDPI., 11(1), 123.
https://doi.org/10.3390/met11010123

Cvetković VS, Vukićević N, Feldhaus D, Milićević-Neumann K, Barudžija TS, Friedrich B, Jovićević JN. Electrodeposition of Aluminium-Vanadium Alloys from Chloroaluminate Based Molten Salt Containing Vanadium Ions. in Metals. 2021;11(1):123.
doi:10.3390/met11010123 .

Cvetković, Vesna S., Vukićević, Nataša, Feldhaus, Dominic, Milićević-Neumann, Ksenija, Barudžija, Tanja S., Friedrich, Bernd, Jovićević, Jovan N., "Electrodeposition of Aluminium-Vanadium Alloys from Chloroaluminate Based Molten Salt Containing Vanadium Ions" in Metals, 11, no. 1 (2021):123,
https://doi.org/10.3390/met11010123 . .

TY  - CONF
AU  - Mitterecker, Jonas
AU  - Mihailović, Marija
AU  - Košević, Milica
AU  - Stevanović, Jasmina
AU  - Stopić, Srećko
AU  - Panić, Vladimir
AU  - Friedrich, Bernd
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4884
AB  - Hydrometallurgical procedure and chemical measurements were employed to study the precipitation behavior of different metals in a lateritic ore pregnant leach solution (PLS). Lateritic ore was leached in 1 M H2SO4 solution at 70 oC by standard leaching process. The leachate was afterwards subjected to the pH adjustment that led to the removal of metal ions by precipitation. Measurements of pH as well as chemical analysis show characteristic values of metal ion removal from the PLS.
AB  - Hidrometalurški postupak luženja lateritne rude uz hemijske analize u rastvoru luženja su korišćeni kako bi se ispitalo ponašanje različitih metala u koncentrovanom rastvoru luženja (PLS). Lateritna ruda podvrgnuta je standardnom postupku luženja u rastvoru 1 M H2SO4 na 70 oC. Iz dobijene lužine su nakon toga taloženi joni metala tokom menjanja pH vrednosti prvobitnog PLS rastvora. Rezultati merenja pH, kao i hemijskih analiza dali su karakteristične vrednosti na kojima je moguće iz PLS rastvora odstraniti određene jone metala.
PB  - Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)
C3  - Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija
T1  - Precipitation behaviour in pH adjusted lateritic ore solution
SP  - 190
SP  - 194
UR  - https://hdl.handle.net/21.15107/rcub_cer_4884
ER  - 

@conference{
author = "Mitterecker, Jonas and Mihailović, Marija and Košević, Milica and Stevanović, Jasmina and Stopić, Srećko and Panić, Vladimir and Friedrich, Bernd",
year = "2021",
abstract = "Hydrometallurgical procedure and chemical measurements were employed to study the precipitation behavior of different metals in a lateritic ore pregnant leach solution (PLS). Lateritic ore was leached in 1 M H2SO4 solution at 70 oC by standard leaching process. The leachate was afterwards subjected to the pH adjustment that led to the removal of metal ions by precipitation. Measurements of pH as well as chemical analysis show characteristic values of metal ion removal from the PLS., Hidrometalurški postupak luženja lateritne rude uz hemijske analize u rastvoru luženja su korišćeni kako bi se ispitalo ponašanje različitih metala u koncentrovanom rastvoru luženja (PLS). Lateritna ruda podvrgnuta je standardnom postupku luženja u rastvoru 1 M H2SO4 na 70 oC. Iz dobijene lužine su nakon toga taloženi joni metala tokom menjanja pH vrednosti prvobitnog PLS rastvora. Rezultati merenja pH, kao i hemijskih analiza dali su karakteristične vrednosti na kojima je moguće iz PLS rastvora odstraniti određene jone metala.",
publisher = "Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)",
journal = "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija",
title = "Precipitation behaviour in pH adjusted lateritic ore solution",
pages = "190-194",
url = "https://hdl.handle.net/21.15107/rcub_cer_4884"
}

Mitterecker, J., Mihailović, M., Košević, M., Stevanović, J., Stopić, S., Panić, V.,& Friedrich, B.. (2021). Precipitation behaviour in pH adjusted lateritic ore solution. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija
Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)., 190.
https://hdl.handle.net/21.15107/rcub_cer_4884

Mitterecker J, Mihailović M, Košević M, Stevanović J, Stopić S, Panić V, Friedrich B. Precipitation behaviour in pH adjusted lateritic ore solution. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija. 2021;:190.
https://hdl.handle.net/21.15107/rcub_cer_4884 .

Mitterecker, Jonas, Mihailović, Marija, Košević, Milica, Stevanović, Jasmina, Stopić, Srećko, Panić, Vladimir, Friedrich, Bernd, "Precipitation behaviour in pH adjusted lateritic ore solution" in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija (2021):190,
https://hdl.handle.net/21.15107/rcub_cer_4884 .

TY  - CONF
AU  - Mitterecker, Jonas
AU  - Košević, Milica
AU  - Mihailović, Marija
AU  - Stevanović, Jasmina
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
AU  - Panić, Vladimir
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4885
AB  - Electrochemical measurements were employed to study the possibility of the extraction of metal ions from lateritic ore leachates predominantly rich in Fe in order to separate more noble cobalt and nickel metals. Lateritic ore was leached in 1 M H2SO4 solution at 70 °C by standard leaching process. The leachate was afterwards subjected to the pH adjustment that led to the removal of Fe ions by precipitation. Results obtained from cyclic voltammetry and chronamperometry measurements in native leachate and those with adjusted pH showed that optimal pH value for Fe removal was 3.7.
AB  - Elektrohemijskim merenjima je ispitivana mogućnost izdvajanja kobalta i nikla iz lužine lateritne rude bogate sa Fe. Rastvorne komponente lateritne rude su standardnim procesom luženja, tretiranjem u 1 M rastvoru H2SO4 na povišenoj temperaturi, prevedene u rastvor. U sledećoj fazi prečišćavanja dobijenom rastvoru je podešavana pH vrednost kako bi se joni Fe preveli u talog. Cikličnom voltametrijom i hronoamperometrijom je pokazano da je optimalna vrednost za uklanjanje jona Fe 3,7.
PB  - Belgrade : Serbian Society of Corrosion and Materials Protection UISKOZAM
C3  - Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija
T1  - Electrochemical investigation of lateritic ore leachates for metal ions extraction
SP  - 195
EP  - 198
UR  - https://hdl.handle.net/21.15107/rcub_cer_4885
ER  - 

@conference{
author = "Mitterecker, Jonas and Košević, Milica and Mihailović, Marija and Stevanović, Jasmina and Stopić, Srećko and Friedrich, Bernd and Panić, Vladimir",
year = "2021",
abstract = "Electrochemical measurements were employed to study the possibility of the extraction of metal ions from lateritic ore leachates predominantly rich in Fe in order to separate more noble cobalt and nickel metals. Lateritic ore was leached in 1 M H2SO4 solution at 70 °C by standard leaching process. The leachate was afterwards subjected to the pH adjustment that led to the removal of Fe ions by precipitation. Results obtained from cyclic voltammetry and chronamperometry measurements in native leachate and those with adjusted pH showed that optimal pH value for Fe removal was 3.7., Elektrohemijskim merenjima je ispitivana mogućnost izdvajanja kobalta i nikla iz lužine lateritne rude bogate sa Fe. Rastvorne komponente lateritne rude su standardnim procesom luženja, tretiranjem u 1 M rastvoru H2SO4 na povišenoj temperaturi, prevedene u rastvor. U sledećoj fazi prečišćavanja dobijenom rastvoru je podešavana pH vrednost kako bi se joni Fe preveli u talog. Cikličnom voltametrijom i hronoamperometrijom je pokazano da je optimalna vrednost za uklanjanje jona Fe 3,7.",
publisher = "Belgrade : Serbian Society of Corrosion and Materials Protection UISKOZAM",
journal = "Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija",
title = "Electrochemical investigation of lateritic ore leachates for metal ions extraction",
pages = "195-198",
url = "https://hdl.handle.net/21.15107/rcub_cer_4885"
}

Mitterecker, J., Košević, M., Mihailović, M., Stevanović, J., Stopić, S., Friedrich, B.,& Panić, V.. (2021). Electrochemical investigation of lateritic ore leachates for metal ions extraction. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija
Belgrade : Serbian Society of Corrosion and Materials Protection UISKOZAM., 195-198.
https://hdl.handle.net/21.15107/rcub_cer_4885

Mitterecker J, Košević M, Mihailović M, Stevanović J, Stopić S, Friedrich B, Panić V. Electrochemical investigation of lateritic ore leachates for metal ions extraction. in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija. 2021;:195-198.
https://hdl.handle.net/21.15107/rcub_cer_4885 .

Mitterecker, Jonas, Košević, Milica, Mihailović, Marija, Stevanović, Jasmina, Stopić, Srećko, Friedrich, Bernd, Panić, Vladimir, "Electrochemical investigation of lateritic ore leachates for metal ions extraction" in Meeting point of the science and practice in the fields of corrosion, materials and environmental protection : proceedings XXII YuCorr International Conference / Stecište nauke i prakse u oblastima korozije, zaštite materijala i životne sredine : knjiga radova XXII YuCorr [Jugoslovenska korozija] Međunarodna konferencija (2021):195-198,
https://hdl.handle.net/21.15107/rcub_cer_4885 .

TY  - JOUR
AU  - Marković, Radmila
AU  - Krstić, Vesna
AU  - Friedrich, Bernd
AU  - Stopić, Srećko
AU  - Stevanović, Jasmina
AU  - Stevanović, Zoran
AU  - Marjanović, Vesna
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4751
AB  - The electrorefining process of the non-commercial Cu anodes was tested on the enlarged laboratory equipment over 72 h. Cu anodes with Ni content of 5 or 10 wt.% and total content of Pb, Sn, and Sb of about 1.5 wt.% were used for the tests. The real waste solution of sulfuric acid character was a working electrolyte of different temperatures (T1 = 63 ± 2 °C and T2 = 73 ± 2 °C). The current density of 250 A/m2 was the same as in the commercial process. Tests were confirmed that those anodes can be used in the commercial copper electrorefining process based on the fact that the elements from anodes were dissolved, the total anode passivation did not occur, and copper is deposited onto cathodes. The masses of cathode deposits confirmed that the Cu ions from the electrolyte were also deposited onto cathodes. The concentration of Cu, As, and Sb ions in the electrolyte was decreased. At the same time, the concentration of Ni ions was increased by a maximum of up to 129.27 wt.%. The major crystalline phases in the obtained anode slime, detected by the X-ray diffraction analyses, were PbSO4, Cu3As, SbAsO4, Cu2O, As2O3, PbO, SnO, and Sb2O3.
PB  - MDPI
T2  - Metals
T1  - Electrorefining process of the non-commercial copper anodes
VL  - 11
IS  - 8
SP  - 1187
DO  - 10.3390/met11081187
ER  - 

@article{
author = "Marković, Radmila and Krstić, Vesna and Friedrich, Bernd and Stopić, Srećko and Stevanović, Jasmina and Stevanović, Zoran and Marjanović, Vesna",
year = "2021",
abstract = "The electrorefining process of the non-commercial Cu anodes was tested on the enlarged laboratory equipment over 72 h. Cu anodes with Ni content of 5 or 10 wt.% and total content of Pb, Sn, and Sb of about 1.5 wt.% were used for the tests. The real waste solution of sulfuric acid character was a working electrolyte of different temperatures (T1 = 63 ± 2 °C and T2 = 73 ± 2 °C). The current density of 250 A/m2 was the same as in the commercial process. Tests were confirmed that those anodes can be used in the commercial copper electrorefining process based on the fact that the elements from anodes were dissolved, the total anode passivation did not occur, and copper is deposited onto cathodes. The masses of cathode deposits confirmed that the Cu ions from the electrolyte were also deposited onto cathodes. The concentration of Cu, As, and Sb ions in the electrolyte was decreased. At the same time, the concentration of Ni ions was increased by a maximum of up to 129.27 wt.%. The major crystalline phases in the obtained anode slime, detected by the X-ray diffraction analyses, were PbSO4, Cu3As, SbAsO4, Cu2O, As2O3, PbO, SnO, and Sb2O3.",
publisher = "MDPI",
journal = "Metals",
title = "Electrorefining process of the non-commercial copper anodes",
volume = "11",
number = "8",
pages = "1187",
doi = "10.3390/met11081187"
}

Marković, R., Krstić, V., Friedrich, B., Stopić, S., Stevanović, J., Stevanović, Z.,& Marjanović, V.. (2021). Electrorefining process of the non-commercial copper anodes. in Metals
MDPI., 11(8), 1187.
https://doi.org/10.3390/met11081187

Marković R, Krstić V, Friedrich B, Stopić S, Stevanović J, Stevanović Z, Marjanović V. Electrorefining process of the non-commercial copper anodes. in Metals. 2021;11(8):1187.
doi:10.3390/met11081187 .

Marković, Radmila, Krstić, Vesna, Friedrich, Bernd, Stopić, Srećko, Stevanović, Jasmina, Stevanović, Zoran, Marjanović, Vesna, "Electrorefining process of the non-commercial copper anodes" in Metals, 11, no. 8 (2021):1187,
https://doi.org/10.3390/met11081187 . .

TY  - JOUR
AU  - Košević, Milica
AU  - Zarić, Milana
AU  - Stopić, Srećko
AU  - Stevanović, Jasmina S.
AU  - Weirich, Thomas E.
AU  - Friedrich, Bernd
AU  - Panić, Vladimir
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4430
AB  - Pt/TiO2 composites were synthesized by single-step ultrasonic spray pyrolysis (USP) at different temperatures. In an in-situ method, Pt and TiO2 particles were generated from tetra-n-butyl orthotitanate and chloroplatinic acid, and hydrothermally-prepared TiO2 colloidal dispersion served as Pt support in an ex-situ USP approach. USP-synthesized Pt/TiO2 composites were generated in the form of a solid mixture, morphologically organized in nesting huge hollow and small solid spheres, or TiO2 core/Pt shell regular spheroids by in-situ or ex-situ method, respectively. This paper exclusively reports on characteristic mechanisms of the formation of novel two-component solid composites, which are intrinsic from the USP approach and controlled precursor composition. The generation of the two morphological components within the in-situ approach, the hollow spheres and all-solid spheres, was indicated to be caused by characteristic sol-gel/solid phase transition of TiO2 . Both the walls of the hollow spheres and the cores of all-solid ones consist of TiO2 matrix populated by 10 nm-sized Pt. On the other hand, spherical, uniformly-sized, Pt particles of a few nanometers in size created a shell uniformly deposited onto TiO2 spheres of ca. 150 nm size. Activities of the prepared samples in an oxygen reduction reaction and combined oxygen reduction and hydrogen evolution reactions were electrochemically tested. The ex-situ synthesized Pt/TiO2 was more active for oxygen reduction and combined oxygen reduction and hydrogen reactions in comparison to the in-situ Pt/TiO2 samples, due to better availability of Pt within a core/shell structure for the reactions.
PB  - MDPI
T2  - Metals
T1  - Structural and electrochemical properties of nesting and core/shell pt/tio2 spherical particles synthesized by ultrasonic spray pyrolysis
VL  - 10
IS  - 1
SP  - 11
DO  - 10.3390/met10010011
ER  - 

@article{
author = "Košević, Milica and Zarić, Milana and Stopić, Srećko and Stevanović, Jasmina S. and Weirich, Thomas E. and Friedrich, Bernd and Panić, Vladimir",
year = "2020",
abstract = "Pt/TiO2 composites were synthesized by single-step ultrasonic spray pyrolysis (USP) at different temperatures. In an in-situ method, Pt and TiO2 particles were generated from tetra-n-butyl orthotitanate and chloroplatinic acid, and hydrothermally-prepared TiO2 colloidal dispersion served as Pt support in an ex-situ USP approach. USP-synthesized Pt/TiO2 composites were generated in the form of a solid mixture, morphologically organized in nesting huge hollow and small solid spheres, or TiO2 core/Pt shell regular spheroids by in-situ or ex-situ method, respectively. This paper exclusively reports on characteristic mechanisms of the formation of novel two-component solid composites, which are intrinsic from the USP approach and controlled precursor composition. The generation of the two morphological components within the in-situ approach, the hollow spheres and all-solid spheres, was indicated to be caused by characteristic sol-gel/solid phase transition of TiO2 . Both the walls of the hollow spheres and the cores of all-solid ones consist of TiO2 matrix populated by 10 nm-sized Pt. On the other hand, spherical, uniformly-sized, Pt particles of a few nanometers in size created a shell uniformly deposited onto TiO2 spheres of ca. 150 nm size. Activities of the prepared samples in an oxygen reduction reaction and combined oxygen reduction and hydrogen evolution reactions were electrochemically tested. The ex-situ synthesized Pt/TiO2 was more active for oxygen reduction and combined oxygen reduction and hydrogen reactions in comparison to the in-situ Pt/TiO2 samples, due to better availability of Pt within a core/shell structure for the reactions.",
publisher = "MDPI",
journal = "Metals",
title = "Structural and electrochemical properties of nesting and core/shell pt/tio2 spherical particles synthesized by ultrasonic spray pyrolysis",
volume = "10",
number = "1",
pages = "11",
doi = "10.3390/met10010011"
}

Košević, M., Zarić, M., Stopić, S., Stevanović, J. S., Weirich, T. E., Friedrich, B.,& Panić, V.. (2020). Structural and electrochemical properties of nesting and core/shell pt/tio2 spherical particles synthesized by ultrasonic spray pyrolysis. in Metals
MDPI., 10(1), 11.
https://doi.org/10.3390/met10010011

Košević M, Zarić M, Stopić S, Stevanović JS, Weirich TE, Friedrich B, Panić V. Structural and electrochemical properties of nesting and core/shell pt/tio2 spherical particles synthesized by ultrasonic spray pyrolysis. in Metals. 2020;10(1):11.
doi:10.3390/met10010011 .

Košević, Milica, Zarić, Milana, Stopić, Srećko, Stevanović, Jasmina S., Weirich, Thomas E., Friedrich, Bernd, Panić, Vladimir, "Structural and electrochemical properties of nesting and core/shell pt/tio2 spherical particles synthesized by ultrasonic spray pyrolysis" in Metals, 10, no. 1 (2020):11,
https://doi.org/10.3390/met10010011 . .

TY  - JOUR
AU  - Cvetković, Vesna S.
AU  - Vukićević, Nataša
AU  - Milićević-Neumann, Ksenija
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan N.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3377
AB  - Al-Ti alloys were electrodeposited from equimolar chloroaluminate molten salts containing up to 0.1 M of titanium ions, which were added to the electrolyte by potentiostatic dissolution of metallic Ti. Titanium dissolution and titanium and aluminium deposition were investigated by linear sweep voltammetry and chronoamperometry at 200 and 300 °C. Working electrodes used were titanium and glassy carbon. The voltammograms on Ti obtained in the electrolyte without added Ti ions indicated titanium deposition and dissolution proceeding in three reversible steps: Ti4+ ⇄ Ti3+, Ti3+ ⇄ Ti2+ and Ti2+ ⇄ Ti. The voltammograms recorded with glassy carbon in the electrolyte containing added titanium ions did not always clearly register all of the three processes. However, peak currents, which were characteristics of Al, Ti and Al-Ti alloy deposition and dissolution, were evident in voltammograms on both working electrodes used. A constant potential electrodeposition regime was used to obtain deposits on the glassy carbon working electrode. The obtained deposits were characterized by SEM, energy-dispersive spectrometry and XRD. In the deposits on the glassy carbon electrode, the analysis identified an Al and AlTi3 alloy formed at 200 °C and an Al2Ti and Al3Ti alloy obtained at 300 °C.
PB  - MDPI
T2  - Metals
T1  - Electrochemical Deposition of Al-Ti Alloys from Equimolar AlCl3 + NaCl Containing Electrochemically Dissolved Titanium
VL  - 10
IS  - 1
SP  - 88
DO  - 10.3390/met10010088
ER  - 

@article{
author = "Cvetković, Vesna S. and Vukićević, Nataša and Milićević-Neumann, Ksenija and Stopić, Srećko and Friedrich, Bernd and Jovićević, Jovan N.",
year = "2020",
abstract = "Al-Ti alloys were electrodeposited from equimolar chloroaluminate molten salts containing up to 0.1 M of titanium ions, which were added to the electrolyte by potentiostatic dissolution of metallic Ti. Titanium dissolution and titanium and aluminium deposition were investigated by linear sweep voltammetry and chronoamperometry at 200 and 300 °C. Working electrodes used were titanium and glassy carbon. The voltammograms on Ti obtained in the electrolyte without added Ti ions indicated titanium deposition and dissolution proceeding in three reversible steps: Ti4+ ⇄ Ti3+, Ti3+ ⇄ Ti2+ and Ti2+ ⇄ Ti. The voltammograms recorded with glassy carbon in the electrolyte containing added titanium ions did not always clearly register all of the three processes. However, peak currents, which were characteristics of Al, Ti and Al-Ti alloy deposition and dissolution, were evident in voltammograms on both working electrodes used. A constant potential electrodeposition regime was used to obtain deposits on the glassy carbon working electrode. The obtained deposits were characterized by SEM, energy-dispersive spectrometry and XRD. In the deposits on the glassy carbon electrode, the analysis identified an Al and AlTi3 alloy formed at 200 °C and an Al2Ti and Al3Ti alloy obtained at 300 °C.",
publisher = "MDPI",
journal = "Metals",
title = "Electrochemical Deposition of Al-Ti Alloys from Equimolar AlCl3 + NaCl Containing Electrochemically Dissolved Titanium",
volume = "10",
number = "1",
pages = "88",
doi = "10.3390/met10010088"
}

Cvetković, V. S., Vukićević, N., Milićević-Neumann, K., Stopić, S., Friedrich, B.,& Jovićević, J. N.. (2020). Electrochemical Deposition of Al-Ti Alloys from Equimolar AlCl3 + NaCl Containing Electrochemically Dissolved Titanium. in Metals
MDPI., 10(1), 88.
https://doi.org/10.3390/met10010088

Cvetković VS, Vukićević N, Milićević-Neumann K, Stopić S, Friedrich B, Jovićević JN. Electrochemical Deposition of Al-Ti Alloys from Equimolar AlCl3 + NaCl Containing Electrochemically Dissolved Titanium. in Metals. 2020;10(1):88.
doi:10.3390/met10010088 .

Cvetković, Vesna S., Vukićević, Nataša, Milićević-Neumann, Ksenija, Stopić, Srećko, Friedrich, Bernd, Jovićević, Jovan N., "Electrochemical Deposition of Al-Ti Alloys from Equimolar AlCl3 + NaCl Containing Electrochemically Dissolved Titanium" in Metals, 10, no. 1 (2020):88,
https://doi.org/10.3390/met10010088 . .

TY  - JOUR
AU  - Cvetković, Vesna S.
AU  - Feldhaus, Dominic
AU  - Vukićević, Nataša
AU  - Barudžija, Tanja
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan N.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3587
AB  - Neodymium was electrochemically deposited from NdF3–LiF–Nd2O3 molten salt electrolyte onto the Mo electrode at temperatures close to 1273 K. Cyclic voltammetry and chronoamperometry measurements were the applied electrochemical methods. Metallic neodymium is obtained by potentiostatic deposition. The optical microscopy and XRD were used to analyze the electrolyte, the working electrode surface, and the deposit on the electrode. It was established that Nd(III) ions were reduced to Nd metals in two steps: Nd(III) + e− → Nd(II) at potential ≈−0.55 V vs. W and Nd(II) + 2e− → Nd(0) at ≈−0.83 V vs. W. Both of these processes are reversible and under mass transfer control. Upon deposition under the regime of relatively small deposition overpotential of −0.10 V to −0.20 V, and after the electrolyte was cooled off, Nd metal was observed at the surface of the Mo electrode. CO and CF4 were gases registered as being evolved at the anode. CO and CF4 evolution were observed in quantities below 600 ppm and 10 ppm, respectively
PB  - MDPI
T2  - Metals
T1  - Investigation on the Electrochemical Behaviour and Deposition Mechanism of Neodymium in NdF3–LiF–Nd2O3 Melt on Mo Electrode
VL  - 10
IS  - 5
SP  - 576
DO  - 10.3390/met10050576
ER  - 

@article{
author = "Cvetković, Vesna S. and Feldhaus, Dominic and Vukićević, Nataša and Barudžija, Tanja and Friedrich, Bernd and Jovićević, Jovan N.",
year = "2020",
abstract = "Neodymium was electrochemically deposited from NdF3–LiF–Nd2O3 molten salt electrolyte onto the Mo electrode at temperatures close to 1273 K. Cyclic voltammetry and chronoamperometry measurements were the applied electrochemical methods. Metallic neodymium is obtained by potentiostatic deposition. The optical microscopy and XRD were used to analyze the electrolyte, the working electrode surface, and the deposit on the electrode. It was established that Nd(III) ions were reduced to Nd metals in two steps: Nd(III) + e− → Nd(II) at potential ≈−0.55 V vs. W and Nd(II) + 2e− → Nd(0) at ≈−0.83 V vs. W. Both of these processes are reversible and under mass transfer control. Upon deposition under the regime of relatively small deposition overpotential of −0.10 V to −0.20 V, and after the electrolyte was cooled off, Nd metal was observed at the surface of the Mo electrode. CO and CF4 were gases registered as being evolved at the anode. CO and CF4 evolution were observed in quantities below 600 ppm and 10 ppm, respectively",
publisher = "MDPI",
journal = "Metals",
title = "Investigation on the Electrochemical Behaviour and Deposition Mechanism of Neodymium in NdF3–LiF–Nd2O3 Melt on Mo Electrode",
volume = "10",
number = "5",
pages = "576",
doi = "10.3390/met10050576"
}

Cvetković, V. S., Feldhaus, D., Vukićević, N., Barudžija, T., Friedrich, B.,& Jovićević, J. N.. (2020). Investigation on the Electrochemical Behaviour and Deposition Mechanism of Neodymium in NdF3–LiF–Nd2O3 Melt on Mo Electrode. in Metals
MDPI., 10(5), 576.
https://doi.org/10.3390/met10050576

Cvetković VS, Feldhaus D, Vukićević N, Barudžija T, Friedrich B, Jovićević JN. Investigation on the Electrochemical Behaviour and Deposition Mechanism of Neodymium in NdF3–LiF–Nd2O3 Melt on Mo Electrode. in Metals. 2020;10(5):576.
doi:10.3390/met10050576 .

Cvetković, Vesna S., Feldhaus, Dominic, Vukićević, Nataša, Barudžija, Tanja, Friedrich, Bernd, Jovićević, Jovan N., "Investigation on the Electrochemical Behaviour and Deposition Mechanism of Neodymium in NdF3–LiF–Nd2O3 Melt on Mo Electrode" in Metals, 10, no. 5 (2020):576,
https://doi.org/10.3390/met10050576 . .

TY  - JOUR
AU  - Cvetković, Vesna S.
AU  - Vukićević, Nataša
AU  - Feldhaus, Dominic
AU  - Barudžija, Tanja
AU  - Stevanović, Jasmina
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan J.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3708
AB  - Electrochemical reduction processes of Nd(III) on tungsten and molybdenum electrodes in NdF3+LiF and NdF3+LiF+Nd2O3 were investigated by cyclic voltammetry, chronoamperometry and open circuit measurements. Electrolytes and electrodes were examined after neodymium electrodeposition by optical microscopy and XRD. It was found that tungsten and molybdenum working electrodes behave identically during neodymium complexed ion reduction processes. Their reversible potentials in the electrolytes used differed only by 10 mV, and so did the potentials of the neodymium ion reduction processes. The recorded results indicated that the Nd(III) ions in the melts were reduced in two steps: Nd(III) → Nd(II) and Nd(II) → Nd(0). These consecutive processes are predominantly mass transfer controlled. Electrolytically obtained metal appeared to accumulate on the cathode and no metal neodymium was recorded in the solidified electrolyte placed close to the cathode after completed electrodeposition process. However, it was found that NdF2 formed by the disproportionation reaction between Nd(III) and that deposited Nd(0) coexists with other complex components in the electrolytes used.
PB  - Electrochemical Science Group (ESG)
T2  - International Journal of Electrochemical Science
T1  - Study of Nd deposition onto W and Mo Cathodes from Molten Oxide-Fluoride Electrolyte
VL  - 15
IS  - 7
SP  - 7039
EP  - 7052
DO  - 10.20964/2020.07.82
ER  - 

@article{
author = "Cvetković, Vesna S. and Vukićević, Nataša and Feldhaus, Dominic and Barudžija, Tanja and Stevanović, Jasmina and Friedrich, Bernd and Jovićević, Jovan J.",
year = "2020",
abstract = "Electrochemical reduction processes of Nd(III) on tungsten and molybdenum electrodes in NdF3+LiF and NdF3+LiF+Nd2O3 were investigated by cyclic voltammetry, chronoamperometry and open circuit measurements. Electrolytes and electrodes were examined after neodymium electrodeposition by optical microscopy and XRD. It was found that tungsten and molybdenum working electrodes behave identically during neodymium complexed ion reduction processes. Their reversible potentials in the electrolytes used differed only by 10 mV, and so did the potentials of the neodymium ion reduction processes. The recorded results indicated that the Nd(III) ions in the melts were reduced in two steps: Nd(III) → Nd(II) and Nd(II) → Nd(0). These consecutive processes are predominantly mass transfer controlled. Electrolytically obtained metal appeared to accumulate on the cathode and no metal neodymium was recorded in the solidified electrolyte placed close to the cathode after completed electrodeposition process. However, it was found that NdF2 formed by the disproportionation reaction between Nd(III) and that deposited Nd(0) coexists with other complex components in the electrolytes used.",
publisher = "Electrochemical Science Group (ESG)",
journal = "International Journal of Electrochemical Science",
title = "Study of Nd deposition onto W and Mo Cathodes from Molten Oxide-Fluoride Electrolyte",
volume = "15",
number = "7",
pages = "7039-7052",
doi = "10.20964/2020.07.82"
}

Cvetković, V. S., Vukićević, N., Feldhaus, D., Barudžija, T., Stevanović, J., Friedrich, B.,& Jovićević, J. J.. (2020). Study of Nd deposition onto W and Mo Cathodes from Molten Oxide-Fluoride Electrolyte. in International Journal of Electrochemical Science
Electrochemical Science Group (ESG)., 15(7), 7039-7052.
https://doi.org/10.20964/2020.07.82

Cvetković VS, Vukićević N, Feldhaus D, Barudžija T, Stevanović J, Friedrich B, Jovićević JJ. Study of Nd deposition onto W and Mo Cathodes from Molten Oxide-Fluoride Electrolyte. in International Journal of Electrochemical Science. 2020;15(7):7039-7052.
doi:10.20964/2020.07.82 .

Cvetković, Vesna S., Vukićević, Nataša, Feldhaus, Dominic, Barudžija, Tanja, Stevanović, Jasmina, Friedrich, Bernd, Jovićević, Jovan J., "Study of Nd deposition onto W and Mo Cathodes from Molten Oxide-Fluoride Electrolyte" in International Journal of Electrochemical Science, 15, no. 7 (2020):7039-7052,
https://doi.org/10.20964/2020.07.82 . .

TY  - CONF
AU  - Varničić, Miroslava
AU  - Eraković, Sanja
AU  - Pavlović, Miroslav
AU  - Stopić, Srećko
AU  - Stevanović, Jasmina
AU  - Panić, Vladimir
AU  - Friedrich, Bernd
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5997
AB  - Low cost and highly active electrocatalysts for the oxygen reduction reaction (ORR) are necessary for the development of fuel cells and metal air batteries. Currently, Pt based electrodes have the best catalytic performance but due to is high cost its employment on a significant scale is limmited. Perovskite materials would be a good alternative because of is abundant supply, envronmental benignity, electronic structure, ionic conductivity and redox behavior. Therefore, the aim of this work is synthesis and characterzation of Lanthanum cobalt oxide (LaCoO3) powders doped with Manganese (Mn) - LMCO or Strontium (Sr) - LSCO, as promissing candidates for energy storage and conversion devices. Ultrasonic spray pyrolisis (USP) was used to successfully synthsize spherical sub-microm-m-szed of Lai0.6Sr0.4CoO3 and La0.6Mn0.4CoO3 perovskite type materials. Detailed microscopic analysis (SEM-EDX, TEM, XRD) as well as electrochemical characterization by CV, LSV and EIS technique has been conducted.
PB  - Società Chimica Italiana
C3  - Program and book of abstracts - Giornate dell’Elettrochimica Italiana - GEI 2019 Electrochemistry: from Theory to Industrial Applications, 8-12 September, Padova, Italy
T1  - Synthesis and electrochemical performance of multicomponent oxide materials toward oxygen reduction reaction
SP  - 126
EP  - 126
UR  - https://hdl.handle.net/21.15107/rcub_cer_5997
ER  - 

@conference{
author = "Varničić, Miroslava and Eraković, Sanja and Pavlović, Miroslav and Stopić, Srećko and Stevanović, Jasmina and Panić, Vladimir and Friedrich, Bernd",
year = "2019",
abstract = "Low cost and highly active electrocatalysts for the oxygen reduction reaction (ORR) are necessary for the development of fuel cells and metal air batteries. Currently, Pt based electrodes have the best catalytic performance but due to is high cost its employment on a significant scale is limmited. Perovskite materials would be a good alternative because of is abundant supply, envronmental benignity, electronic structure, ionic conductivity and redox behavior. Therefore, the aim of this work is synthesis and characterzation of Lanthanum cobalt oxide (LaCoO3) powders doped with Manganese (Mn) - LMCO or Strontium (Sr) - LSCO, as promissing candidates for energy storage and conversion devices. Ultrasonic spray pyrolisis (USP) was used to successfully synthsize spherical sub-microm-m-szed of Lai0.6Sr0.4CoO3 and La0.6Mn0.4CoO3 perovskite type materials. Detailed microscopic analysis (SEM-EDX, TEM, XRD) as well as electrochemical characterization by CV, LSV and EIS technique has been conducted.",
publisher = "Società Chimica Italiana",
journal = "Program and book of abstracts - Giornate dell’Elettrochimica Italiana - GEI 2019 Electrochemistry: from Theory to Industrial Applications, 8-12 September, Padova, Italy",
title = "Synthesis and electrochemical performance of multicomponent oxide materials toward oxygen reduction reaction",
pages = "126-126",
url = "https://hdl.handle.net/21.15107/rcub_cer_5997"
}

Varničić, M., Eraković, S., Pavlović, M., Stopić, S., Stevanović, J., Panić, V.,& Friedrich, B.. (2019). Synthesis and electrochemical performance of multicomponent oxide materials toward oxygen reduction reaction. in Program and book of abstracts - Giornate dell’Elettrochimica Italiana - GEI 2019 Electrochemistry: from Theory to Industrial Applications, 8-12 September, Padova, Italy
Società Chimica Italiana., 126-126.
https://hdl.handle.net/21.15107/rcub_cer_5997

Varničić M, Eraković S, Pavlović M, Stopić S, Stevanović J, Panić V, Friedrich B. Synthesis and electrochemical performance of multicomponent oxide materials toward oxygen reduction reaction. in Program and book of abstracts - Giornate dell’Elettrochimica Italiana - GEI 2019 Electrochemistry: from Theory to Industrial Applications, 8-12 September, Padova, Italy. 2019;:126-126.
https://hdl.handle.net/21.15107/rcub_cer_5997 .

Varničić, Miroslava, Eraković, Sanja, Pavlović, Miroslav, Stopić, Srećko, Stevanović, Jasmina, Panić, Vladimir, Friedrich, Bernd, "Synthesis and electrochemical performance of multicomponent oxide materials toward oxygen reduction reaction" in Program and book of abstracts - Giornate dell’Elettrochimica Italiana - GEI 2019 Electrochemistry: from Theory to Industrial Applications, 8-12 September, Padova, Italy (2019):126-126,
https://hdl.handle.net/21.15107/rcub_cer_5997 .

TY  - CONF
AU  - Pavlović, Miroslav
AU  - Eraković, Sanja
AU  - Stopić, Srećko
AU  - Friedrich, Bernd
AU  - Stevanović, Jasmina
AU  - Panić, Vladimir
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6618
AB  - In this study we report of considerable promotion of supercapacitive performances of ruthenium oxide hosted by perovskite-like structure of rare earth–CoO3 composite and vice versa. Spherical, sub-µm-sized, regular spheres of La0.6Sr0.4CoO3 (LSCO) were synthesized by ultrasonic spray pyrolysis (USP). The sphere surface was subsequently hydrothermally doped by RuO2. LSCO and LSCO/RuO2 composites were investigated for their supercapacitive performances in alkaline solution. Microstructure and surface morphology were studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD). It was found that amorphous Ru species decorate the surface of LSCO spheres, and possibly incorporate partially into a B-site of the LSCO lattice. Electrochemical characterization by cyclic voltammetry (CV) clearly revealed that capacitive performances of LSCO are considerably improved by 20 mass% addition of RuO2. The registered capacitance for LSCO/RuO2 reaches the values of USP-synthesized pure RuO2, which reveals the promoting influence of LSCO on RuO2 pseudocapacitance. This intrinsic interactive promotion introduces the LSCO/RuO2 composite as a unique supercapacitive material.
PB  - Zvornik, Republic of Srpska, B&H : Faculty of Technology
C3  - Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina
T1  - Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide
SP  - 620
EP  - 629
UR  - https://hdl.handle.net/21.15107/rcub_cer_6618
ER  - 

@conference{
author = "Pavlović, Miroslav and Eraković, Sanja and Stopić, Srećko and Friedrich, Bernd and Stevanović, Jasmina and Panić, Vladimir",
year = "2019",
abstract = "In this study we report of considerable promotion of supercapacitive performances of ruthenium oxide hosted by perovskite-like structure of rare earth–CoO3 composite and vice versa. Spherical, sub-µm-sized, regular spheres of La0.6Sr0.4CoO3 (LSCO) were synthesized by ultrasonic spray pyrolysis (USP). The sphere surface was subsequently hydrothermally doped by RuO2. LSCO and LSCO/RuO2 composites were investigated for their supercapacitive performances in alkaline solution. Microstructure and surface morphology were studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD). It was found that amorphous Ru species decorate the surface of LSCO spheres, and possibly incorporate partially into a B-site of the LSCO lattice. Electrochemical characterization by cyclic voltammetry (CV) clearly revealed that capacitive performances of LSCO are considerably improved by 20 mass% addition of RuO2. The registered capacitance for LSCO/RuO2 reaches the values of USP-synthesized pure RuO2, which reveals the promoting influence of LSCO on RuO2 pseudocapacitance. This intrinsic interactive promotion introduces the LSCO/RuO2 composite as a unique supercapacitive material.",
publisher = "Zvornik, Republic of Srpska, B&H : Faculty of Technology",
journal = "Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina",
title = "Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide",
pages = "620-629",
url = "https://hdl.handle.net/21.15107/rcub_cer_6618"
}

Pavlović, M., Eraković, S., Stopić, S., Friedrich, B., Stevanović, J.,& Panić, V.. (2019). Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide. in Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina
Zvornik, Republic of Srpska, B&H : Faculty of Technology., 620-629.
https://hdl.handle.net/21.15107/rcub_cer_6618

Pavlović M, Eraković S, Stopić S, Friedrich B, Stevanović J, Panić V. Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide. in Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina. 2019;:620-629.
https://hdl.handle.net/21.15107/rcub_cer_6618 .

Pavlović, Miroslav, Eraković, Sanja, Stopić, Srećko, Friedrich, Bernd, Stevanović, Jasmina, Panić, Vladimir, "Promotion of Supercapacitance of Novel Generation Supercapacitors Based on Lanthanum Strontium Cobalt Oxide and Hydrotermal Ruthenium Oxide" in Book of Abstracts - VI International Congress Engineering, Environment and Materials in Processing Industry, March 11-13, Jahorina, Republic of Srpska, Bosnia and Herzegovina (2019):620-629,
https://hdl.handle.net/21.15107/rcub_cer_6618 .