TY  - JOUR
AU  - Gandara, Meriene
AU  - Mladenović, Dušan
AU  - Oliveira Martins, Marta de Jesus
AU  - Rakočević, Lazar
AU  - Kruszynski de Assis, João Marcos
AU  - Šljukić, Biljana
AU  - Sarmento Gonçalves, Emerson
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13098
AB  - In search for novel materials to replace noble metal-based electrocatalysts in electrochemical energy conversion and storage devices, special attention is given to a distinct class of materials, MAX phase that combines advantages of ceramic and metallic properties. Herein, Nb4AlC3 MAX phase is prepared by a solid-state mixing reaction and characterized morphologically and structurally by transmission and scanning electron microscopy with energy-dispersive X-ray spectroscopy, nitrogen-sorption, X-ray diffraction analysis, X-ray photoelectron and Raman spectroscopy. Electrochemical performance of Nb4AlC3 in terms of capacitance as well as for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) is evaluated in different electrolytes. The specific capacitance Cs of 66.4, 55.0, and 46.0 F g−1 at 5 mV s−1 is determined for acidic, neutral and alkaline medium, respectively. Continuous cycling reveals high capacitance retention in three electrolyte media; moreover, increase of capacitance is observed in acidic and neutral media. The electrochemical impedance spectroscopy showed a low charge transfer resistance of 64.76 Ω cm2 that resulted in better performance for HER in acidic medium (Tafel slope of 60 mV dec−1). In alkaline media, the charge storage value in the double layer is 360 mF cm−2 (0.7 V versus reversible hydrogen electrode) and the best ORR performance of the Nb4AlC3 is achieved in this medium (Tafel slope of 126 mV dec−1).
T2  - Small
T1  - MAX Phase (Nb4AlC3) For Electrocatalysis Applications
DO  - 10.1002/smll.202310576
ER  - 

@article{
author = "Gandara, Meriene and Mladenović, Dušan and Oliveira Martins, Marta de Jesus and Rakočević, Lazar and Kruszynski de Assis, João Marcos and Šljukić, Biljana and Sarmento Gonçalves, Emerson",
year = "2024",
abstract = "In search for novel materials to replace noble metal-based electrocatalysts in electrochemical energy conversion and storage devices, special attention is given to a distinct class of materials, MAX phase that combines advantages of ceramic and metallic properties. Herein, Nb4AlC3 MAX phase is prepared by a solid-state mixing reaction and characterized morphologically and structurally by transmission and scanning electron microscopy with energy-dispersive X-ray spectroscopy, nitrogen-sorption, X-ray diffraction analysis, X-ray photoelectron and Raman spectroscopy. Electrochemical performance of Nb4AlC3 in terms of capacitance as well as for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) is evaluated in different electrolytes. The specific capacitance Cs of 66.4, 55.0, and 46.0 F g−1 at 5 mV s−1 is determined for acidic, neutral and alkaline medium, respectively. Continuous cycling reveals high capacitance retention in three electrolyte media; moreover, increase of capacitance is observed in acidic and neutral media. The electrochemical impedance spectroscopy showed a low charge transfer resistance of 64.76 Ω cm2 that resulted in better performance for HER in acidic medium (Tafel slope of 60 mV dec−1). In alkaline media, the charge storage value in the double layer is 360 mF cm−2 (0.7 V versus reversible hydrogen electrode) and the best ORR performance of the Nb4AlC3 is achieved in this medium (Tafel slope of 126 mV dec−1).",
journal = "Small",
title = "MAX Phase (Nb4AlC3) For Electrocatalysis Applications",
doi = "10.1002/smll.202310576"
}

Gandara, M., Mladenović, D., Oliveira Martins, M. d. J., Rakočević, L., Kruszynski de Assis, J. M., Šljukić, B.,& Sarmento Gonçalves, E.. (2024). MAX Phase (Nb4AlC3) For Electrocatalysis Applications. in Small.
https://doi.org/10.1002/smll.202310576

Gandara M, Mladenović D, Oliveira Martins MDJ, Rakočević L, Kruszynski de Assis JM, Šljukić B, Sarmento Gonçalves E. MAX Phase (Nb4AlC3) For Electrocatalysis Applications. in Small. 2024;.
doi:10.1002/smll.202310576 .

Gandara, Meriene, Mladenović, Dušan, Oliveira Martins, Marta de Jesus, Rakočević, Lazar, Kruszynski de Assis, João Marcos, Šljukić, Biljana, Sarmento Gonçalves, Emerson, "MAX Phase (Nb4AlC3) For Electrocatalysis Applications" in Small (2024),
https://doi.org/10.1002/smll.202310576 . .

TY  - CONF
AU  - Georgijević, Jelena P.
AU  - Srejić, Irena
AU  - Novaković, Mirjana
AU  - Rakočević, Lazar
AU  - Potočnik, Jelena
AU  - Maksić, Aleksandar
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12315
AB  - To enhance the utilization efficiency of platinum (Pt) in electrochemical energy conversion, the precise selection of support materials presents a highly promising strategy. We have developed an efficient and stable bifunctional catalyst for methanol oxidation (MOR) and hydrogen evolution (HER) reaction in an alkaline medium. The Pt-based electrocatalyst, denoted as Pt/e-rGO with low Pt loading was successfully synthesized using graphene sheets as the support via chemical reduction using formic acid as the reducing agent. Graphene sheets are obtained by anodic electrochemical exfoliation of graphite tape. Significant enhancement of intrinsic activity toward MOR and HER was achieved for Pt/e-rGO compared to the commercial Pt/C catalyst. Structural characterization was performed by TEM, SEM and XPS. XPS analysis shows that the graphene is highly reduced. TEM analysis unveiled that the majority of the Pt nanoparticles (NPs) exhibit a diameter in the range of 4-5 nanometers, which is significant because the efficiency of electrooxidation of methanol on supported Pt NPs shows a strong dependence on particle size distribution. Catalyst activity was studied by cyclic voltammetry and linear sweep voltammetry in 0.1M KOH. Electrochemical active surface area (ECSA) was measured by CO-stripping voltammetry and estimated to be 67.93 m2 /g. Current density of 11.28 mA/cm2 ECSA at 0.82 V vs. RHE for MOR is achieved. Onset potential for MOR is 0.55 V vs. RHE. Meanwhile, for HER overporential at the current density -10 mA/cm2 ECSA was 119 mV.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction
SP  - 41
EP  - 41
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12315
ER  - 

@conference{
author = "Georgijević, Jelena P. and Srejić, Irena and Novaković, Mirjana and Rakočević, Lazar and Potočnik, Jelena and Maksić, Aleksandar",
year = "2023",
abstract = "To enhance the utilization efficiency of platinum (Pt) in electrochemical energy conversion, the precise selection of support materials presents a highly promising strategy. We have developed an efficient and stable bifunctional catalyst for methanol oxidation (MOR) and hydrogen evolution (HER) reaction in an alkaline medium. The Pt-based electrocatalyst, denoted as Pt/e-rGO with low Pt loading was successfully synthesized using graphene sheets as the support via chemical reduction using formic acid as the reducing agent. Graphene sheets are obtained by anodic electrochemical exfoliation of graphite tape. Significant enhancement of intrinsic activity toward MOR and HER was achieved for Pt/e-rGO compared to the commercial Pt/C catalyst. Structural characterization was performed by TEM, SEM and XPS. XPS analysis shows that the graphene is highly reduced. TEM analysis unveiled that the majority of the Pt nanoparticles (NPs) exhibit a diameter in the range of 4-5 nanometers, which is significant because the efficiency of electrooxidation of methanol on supported Pt NPs shows a strong dependence on particle size distribution. Catalyst activity was studied by cyclic voltammetry and linear sweep voltammetry in 0.1M KOH. Electrochemical active surface area (ECSA) was measured by CO-stripping voltammetry and estimated to be 67.93 m2 /g. Current density of 11.28 mA/cm2 ECSA at 0.82 V vs. RHE for MOR is achieved. Onset potential for MOR is 0.55 V vs. RHE. Meanwhile, for HER overporential at the current density -10 mA/cm2 ECSA was 119 mV.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction",
pages = "41-41",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12315"
}

Georgijević, J. P., Srejić, I., Novaković, M., Rakočević, L., Potočnik, J.,& Maksić, A.. (2023). Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 41-41.
https://hdl.handle.net/21.15107/rcub_vinar_12315

Georgijević JP, Srejić I, Novaković M, Rakočević L, Potočnik J, Maksić A. Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:41-41.
https://hdl.handle.net/21.15107/rcub_vinar_12315 .

Georgijević, Jelena P., Srejić, Irena, Novaković, Mirjana, Rakočević, Lazar, Potočnik, Jelena, Maksić, Aleksandar, "Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):41-41,
https://hdl.handle.net/21.15107/rcub_vinar_12315 .

TY  - JOUR
AU  - Milikić, Jadranka
AU  - Knežević, Sara
AU  - Ognjanović, Miloš
AU  - Stanković, Dalibor M.
AU  - Rakočević, Lazar
AU  - Šljukić, Biljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10860
AB  - Porous cobalt (III) oxide (Co3O4) and mixed cobalt (III) oxide - tin oxide (Co3O4/SnO2) were prepared by a novel template-based hydrothermal method resulting in their spherical morphology as confirmed by thorough physico-chemical characterisation. Two oxides were systematically examined as bifunctional electrocatalysts for oxygen reduction (ORR) and evolution (OER) reaction in alkaline media by voltammetry with rotating disk electrode, electrochemical impedance spectroscopy, and chronoamperometry. Low-cost Co3O4 and Co3O4/SnO2 electrocatalysts showed excellent ORR performance with low onset and half-wave potential, low Tafel slope, and the number of exchange electrons near 4, comparable to the commercial Pt/C electrocatalyst. Low OER onset potential of 1.52 and 1.57 V was observed for Co3O4 and Co3O4/SnO2, respectively, with low charge transfer resistance under anodic polarization conditions. Finally, to test bifunctional activity and durability of the two electrocatalyst, switch OER/ORR test was carried out.
T2  - International Journal of Hydrogen Energy
T1  - Template-based synthesis of Co3O4 and Co3O4/SnO2 bifunctional catalysts with enhanced electrocatalytic properties for reversible oxygen evolution and reduction reaction
IS  - InPress
DO  - 10.1016/j.ijhydene.2023.03.433
ER  - 

@article{
author = "Milikić, Jadranka and Knežević, Sara and Ognjanović, Miloš and Stanković, Dalibor M. and Rakočević, Lazar and Šljukić, Biljana",
year = "2023",
abstract = "Porous cobalt (III) oxide (Co3O4) and mixed cobalt (III) oxide - tin oxide (Co3O4/SnO2) were prepared by a novel template-based hydrothermal method resulting in their spherical morphology as confirmed by thorough physico-chemical characterisation. Two oxides were systematically examined as bifunctional electrocatalysts for oxygen reduction (ORR) and evolution (OER) reaction in alkaline media by voltammetry with rotating disk electrode, electrochemical impedance spectroscopy, and chronoamperometry. Low-cost Co3O4 and Co3O4/SnO2 electrocatalysts showed excellent ORR performance with low onset and half-wave potential, low Tafel slope, and the number of exchange electrons near 4, comparable to the commercial Pt/C electrocatalyst. Low OER onset potential of 1.52 and 1.57 V was observed for Co3O4 and Co3O4/SnO2, respectively, with low charge transfer resistance under anodic polarization conditions. Finally, to test bifunctional activity and durability of the two electrocatalyst, switch OER/ORR test was carried out.",
journal = "International Journal of Hydrogen Energy",
title = "Template-based synthesis of Co3O4 and Co3O4/SnO2 bifunctional catalysts with enhanced electrocatalytic properties for reversible oxygen evolution and reduction reaction",
number = "InPress",
doi = "10.1016/j.ijhydene.2023.03.433"
}

Milikić, J., Knežević, S., Ognjanović, M., Stanković, D. M., Rakočević, L.,& Šljukić, B.. (2023). Template-based synthesis of Co3O4 and Co3O4/SnO2 bifunctional catalysts with enhanced electrocatalytic properties for reversible oxygen evolution and reduction reaction. in International Journal of Hydrogen Energy(InPress).
https://doi.org/10.1016/j.ijhydene.2023.03.433

Milikić J, Knežević S, Ognjanović M, Stanković DM, Rakočević L, Šljukić B. Template-based synthesis of Co3O4 and Co3O4/SnO2 bifunctional catalysts with enhanced electrocatalytic properties for reversible oxygen evolution and reduction reaction. in International Journal of Hydrogen Energy. 2023;(InPress).
doi:10.1016/j.ijhydene.2023.03.433 .

Milikić, Jadranka, Knežević, Sara, Ognjanović, Miloš, Stanković, Dalibor M., Rakočević, Lazar, Šljukić, Biljana, "Template-based synthesis of Co3O4 and Co3O4/SnO2 bifunctional catalysts with enhanced electrocatalytic properties for reversible oxygen evolution and reduction reaction" in International Journal of Hydrogen Energy, no. InPress (2023),
https://doi.org/10.1016/j.ijhydene.2023.03.433 . .

TY  - JOUR
AU  - Nikolić, Nikolina
AU  - Spasojević, Jelena P.
AU  - Radosavljević, Aleksandra
AU  - Milošević, Milica V.
AU  - Barudžija, Tanja
AU  - Rakočević, Lazar
AU  - Kačarević-Popović, Zorica M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10449
AB  - A series of silver nanoparticles (AgNPs)-poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) (PVA/PVP) hydrogel nanocomposites were synthesized by gamma irradiation to examine the matrix's impact on properties of Ag nanocrystals important for strain engineering in functional materials. SEM analysis and the swelling studies revealed nanocomposite morphology and fluid transport properties. UV–Vis absorption characterization of AgNPs has enabled an understanding of the cluster size effects. The gel content indicated inter-crosslinking of the two components of the polymer matrix, especially for equivalent (1:1) PVA/PVP ratio, affecting the investigated AgNPs structural parameters. The lattice parameters and the interface stress, analyzed using XRD, have the lowest negative magnitude from the bulk lattice constant for the PVA/PVP (2:1) and (1:1) ratio. The lowest values of the lattice strain and dislocation density, as mutually dependent parameters, are obtained in AgNPs embedded in a PVA/PVP (2:1) and (1:1) matrix. The XPS and FTIR data show a positive shift of the O1s and a redshift of the CO – Ag vibration band indicating charge transfer to the vacant orbital of Ag nanocrystals. The N atoms of the pyrrolidine ring are not directly involved in the electronic interactions, but over the p-π conjugation with carbonyl O. In addition, the tested Ag-(PVA/PVP) hydrogel nanocomposites showed significant potential as a broad-spectrum antibacterial material.
T2  - Radiation Physics and Chemistry
T1  - Influence of poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) polymer matrix composition on the bonding environment and characteristics of Ag nanoparticles produced by gamma irradiation
VL  - 202
SP  - 110564
DO  - 10.1016/j.radphyschem.2022.110564
ER  - 

@article{
author = "Nikolić, Nikolina and Spasojević, Jelena P. and Radosavljević, Aleksandra and Milošević, Milica V. and Barudžija, Tanja and Rakočević, Lazar and Kačarević-Popović, Zorica M.",
year = "2023",
abstract = "A series of silver nanoparticles (AgNPs)-poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) (PVA/PVP) hydrogel nanocomposites were synthesized by gamma irradiation to examine the matrix's impact on properties of Ag nanocrystals important for strain engineering in functional materials. SEM analysis and the swelling studies revealed nanocomposite morphology and fluid transport properties. UV–Vis absorption characterization of AgNPs has enabled an understanding of the cluster size effects. The gel content indicated inter-crosslinking of the two components of the polymer matrix, especially for equivalent (1:1) PVA/PVP ratio, affecting the investigated AgNPs structural parameters. The lattice parameters and the interface stress, analyzed using XRD, have the lowest negative magnitude from the bulk lattice constant for the PVA/PVP (2:1) and (1:1) ratio. The lowest values of the lattice strain and dislocation density, as mutually dependent parameters, are obtained in AgNPs embedded in a PVA/PVP (2:1) and (1:1) matrix. The XPS and FTIR data show a positive shift of the O1s and a redshift of the CO – Ag vibration band indicating charge transfer to the vacant orbital of Ag nanocrystals. The N atoms of the pyrrolidine ring are not directly involved in the electronic interactions, but over the p-π conjugation with carbonyl O. In addition, the tested Ag-(PVA/PVP) hydrogel nanocomposites showed significant potential as a broad-spectrum antibacterial material.",
journal = "Radiation Physics and Chemistry",
title = "Influence of poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) polymer matrix composition on the bonding environment and characteristics of Ag nanoparticles produced by gamma irradiation",
volume = "202",
pages = "110564",
doi = "10.1016/j.radphyschem.2022.110564"
}

Nikolić, N., Spasojević, J. P., Radosavljević, A., Milošević, M. V., Barudžija, T., Rakočević, L.,& Kačarević-Popović, Z. M.. (2023). Influence of poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) polymer matrix composition on the bonding environment and characteristics of Ag nanoparticles produced by gamma irradiation. in Radiation Physics and Chemistry, 202, 110564.
https://doi.org/10.1016/j.radphyschem.2022.110564

Nikolić N, Spasojević JP, Radosavljević A, Milošević MV, Barudžija T, Rakočević L, Kačarević-Popović ZM. Influence of poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) polymer matrix composition on the bonding environment and characteristics of Ag nanoparticles produced by gamma irradiation. in Radiation Physics and Chemistry. 2023;202:110564.
doi:10.1016/j.radphyschem.2022.110564 .

Nikolić, Nikolina, Spasojević, Jelena P., Radosavljević, Aleksandra, Milošević, Milica V., Barudžija, Tanja, Rakočević, Lazar, Kačarević-Popović, Zorica M., "Influence of poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) polymer matrix composition on the bonding environment and characteristics of Ag nanoparticles produced by gamma irradiation" in Radiation Physics and Chemistry, 202 (2023):110564,
https://doi.org/10.1016/j.radphyschem.2022.110564 . .

TY  - CONF
AU  - Rakočević, Lazar
AU  - Golubović, Jelena
AU  - Rajić, Vladimir
AU  - Štrbac, Svetlana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12330
AB  - Finding suitable catalysts for hydrogen evolution reaction (HER) is key for economic production of hydrogen for use in fuel cells. Reducing the amount of expensive noble metals that are used is one of the ways for obtaining such catalysts. Various combinations of different noble metals and various carbon supports have been studied. In this work nanoplatelets (GNP) was used as a support and on it Pt nanoparticles were electrochemically deposited in sub monolayer nanoislands. Obtained Pt/GNP electrode was characterized by X ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) while its electrocatalytic activity was investigated by cyclic voltammetry (CV), linear sweep voltammetry (LSV) and chronoamperometry . XPS analysis showed that the atomic percentages of Pt in Pt/GNP was 1.3% for electhrochemical deposition and 0.3% for spontaneous deposition, respectively. SEM micrographs of Pt/GNP electrode surface showed that Pt nanoparticles occupy mostly the edges GNP support, while elemental maping confirms the distribution of Pt, C and O over the surface of the electrode. Pt/GNP electrode has shown remarkably good performance for HER reaction in 0.5 M H2SO4 acid solution. Outstanding HER activity was achieved, showing the initial potential close to the equilibrium potential for HER and of -0.003 V and a low Tafel slope of about -30 mV/dec. The chronoamperometric measurement performed over 180 min for hydrogen evolution at the constant potential indicates good stability and durability.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Characterization and hydrogen evolution on Pt/nanoplatelets
SP  - 82
EP  - 82
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12330
ER  - 

@conference{
author = "Rakočević, Lazar and Golubović, Jelena and Rajić, Vladimir and Štrbac, Svetlana",
year = "2023",
abstract = "Finding suitable catalysts for hydrogen evolution reaction (HER) is key for economic production of hydrogen for use in fuel cells. Reducing the amount of expensive noble metals that are used is one of the ways for obtaining such catalysts. Various combinations of different noble metals and various carbon supports have been studied. In this work nanoplatelets (GNP) was used as a support and on it Pt nanoparticles were electrochemically deposited in sub monolayer nanoislands. Obtained Pt/GNP electrode was characterized by X ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) while its electrocatalytic activity was investigated by cyclic voltammetry (CV), linear sweep voltammetry (LSV) and chronoamperometry . XPS analysis showed that the atomic percentages of Pt in Pt/GNP was 1.3% for electhrochemical deposition and 0.3% for spontaneous deposition, respectively. SEM micrographs of Pt/GNP electrode surface showed that Pt nanoparticles occupy mostly the edges GNP support, while elemental maping confirms the distribution of Pt, C and O over the surface of the electrode. Pt/GNP electrode has shown remarkably good performance for HER reaction in 0.5 M H2SO4 acid solution. Outstanding HER activity was achieved, showing the initial potential close to the equilibrium potential for HER and of -0.003 V and a low Tafel slope of about -30 mV/dec. The chronoamperometric measurement performed over 180 min for hydrogen evolution at the constant potential indicates good stability and durability.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Characterization and hydrogen evolution on Pt/nanoplatelets",
pages = "82-82",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12330"
}

Rakočević, L., Golubović, J., Rajić, V.,& Štrbac, S.. (2023). Characterization and hydrogen evolution on Pt/nanoplatelets. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 82-82.
https://hdl.handle.net/21.15107/rcub_vinar_12330

Rakočević L, Golubović J, Rajić V, Štrbac S. Characterization and hydrogen evolution on Pt/nanoplatelets. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:82-82.
https://hdl.handle.net/21.15107/rcub_vinar_12330 .

Rakočević, Lazar, Golubović, Jelena, Rajić, Vladimir, Štrbac, Svetlana, "Characterization and hydrogen evolution on Pt/nanoplatelets" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):82-82,
https://hdl.handle.net/21.15107/rcub_vinar_12330 .

TY  - JOUR
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar-Merah, Souad
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10620
AB  - Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C ollowed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM icroscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.
T2  - Chemosensors
T1  - Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites
VL  - 11
IS  - 1
SP  - 34
DO  - 10.3390/chemosensors11010034
ER  - 

@article{
author = "Dojčinović, Milena and Vasiljević, Zorka and Rakočević, Lazar and Pavlović, Vera P. and Ammar-Merah, Souad and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2023",
abstract = "Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C ollowed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM icroscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.",
journal = "Chemosensors",
title = "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites",
volume = "11",
number = "1",
pages = "34",
doi = "10.3390/chemosensors11010034"
}

Dojčinović, M., Vasiljević, Z., Rakočević, L., Pavlović, V. P., Ammar-Merah, S., Vujančević, J.,& Nikolić, M. V.. (2023). Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors, 11(1), 34.
https://doi.org/10.3390/chemosensors11010034

Dojčinović M, Vasiljević Z, Rakočević L, Pavlović VP, Ammar-Merah S, Vujančević J, Nikolić MV. Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors. 2023;11(1):34.
doi:10.3390/chemosensors11010034 .

Dojčinović, Milena, Vasiljević, Zorka, Rakočević, Lazar, Pavlović, Vera P., Ammar-Merah, Souad, Vujančević, Jelena, Nikolić, Maria Vesna, "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites" in Chemosensors, 11, no. 1 (2023):34,
https://doi.org/10.3390/chemosensors11010034 . .

TY  - JOUR
AU  - Elessawy, Noha A.
AU  - Backović, Gordana
AU  - Hirunthanawat, Janesuda
AU  - Martins, Marta
AU  - Rakočević, Lazar
AU  - Gouda, Marwa H.
AU  - Toghan, Arafat
AU  - Youssef, Mohamed E.
AU  - Šljukić, Biljana
AU  - Santos, Diogo M. F.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10847
AB  - Direct liquid fuel cells represent one of the most rapidly emerging energy conversion devices. The main challenge in developing fuel cell devices is finding low-cost and highly active catalysts. In this work, PET bottle waste was transformed into nitrogen-doped graphene (NG) as valuable catalyst support. NG was prepared by a one-pot thermal decomposition process of mineral water waste bottles with urea at 800 °C. Then, NG/Pt electrocatalysts with Pt loadings as low as 0.9 wt.% and 1.8 wt.% were prepared via a simple reduction method in aqueous solution at room temperature. The physical and electrochemical properties of the NG/Pt electrocatalysts are characterized and evaluated for application in direct borohydride peroxide fuel cells (DBPFCs). The results show that NG/Pt catalysts display catalytic activity for borohydride oxidation reaction, particularly the NG/Pt_1, with a number of exchanged electrons of 2.7. Using NG/Pt composite in fuel cells is anticipated to lower prices and boost the usage of electrochemical energy devices. A DBPFC fuel cell using NG/Pt_1 catalyst (1.8 wt.% Pt) in the anode achieved a power density of 75 mW cm−2 at 45 °C. The exceptional performance and economic viability become even more evident when expressed as mass-specific power density, reaching a value as high as 15.8 W mgPt−1.
T2  - Catalysts
T1  - From PET Bottles Waste to N-Doped Graphene as Sustainable Electrocatalyst Support for Direct Liquid Fuel Cells
VL  - 13
IS  - 3
SP  - 525
DO  - 10.3390/catal13030525
ER  - 

@article{
author = "Elessawy, Noha A. and Backović, Gordana and Hirunthanawat, Janesuda and Martins, Marta and Rakočević, Lazar and Gouda, Marwa H. and Toghan, Arafat and Youssef, Mohamed E. and Šljukić, Biljana and Santos, Diogo M. F.",
year = "2023",
abstract = "Direct liquid fuel cells represent one of the most rapidly emerging energy conversion devices. The main challenge in developing fuel cell devices is finding low-cost and highly active catalysts. In this work, PET bottle waste was transformed into nitrogen-doped graphene (NG) as valuable catalyst support. NG was prepared by a one-pot thermal decomposition process of mineral water waste bottles with urea at 800 °C. Then, NG/Pt electrocatalysts with Pt loadings as low as 0.9 wt.% and 1.8 wt.% were prepared via a simple reduction method in aqueous solution at room temperature. The physical and electrochemical properties of the NG/Pt electrocatalysts are characterized and evaluated for application in direct borohydride peroxide fuel cells (DBPFCs). The results show that NG/Pt catalysts display catalytic activity for borohydride oxidation reaction, particularly the NG/Pt_1, with a number of exchanged electrons of 2.7. Using NG/Pt composite in fuel cells is anticipated to lower prices and boost the usage of electrochemical energy devices. A DBPFC fuel cell using NG/Pt_1 catalyst (1.8 wt.% Pt) in the anode achieved a power density of 75 mW cm−2 at 45 °C. The exceptional performance and economic viability become even more evident when expressed as mass-specific power density, reaching a value as high as 15.8 W mgPt−1.",
journal = "Catalysts",
title = "From PET Bottles Waste to N-Doped Graphene as Sustainable Electrocatalyst Support for Direct Liquid Fuel Cells",
volume = "13",
number = "3",
pages = "525",
doi = "10.3390/catal13030525"
}

Elessawy, N. A., Backović, G., Hirunthanawat, J., Martins, M., Rakočević, L., Gouda, M. H., Toghan, A., Youssef, M. E., Šljukić, B.,& Santos, D. M. F.. (2023). From PET Bottles Waste to N-Doped Graphene as Sustainable Electrocatalyst Support for Direct Liquid Fuel Cells. in Catalysts, 13(3), 525.
https://doi.org/10.3390/catal13030525

Elessawy NA, Backović G, Hirunthanawat J, Martins M, Rakočević L, Gouda MH, Toghan A, Youssef ME, Šljukić B, Santos DMF. From PET Bottles Waste to N-Doped Graphene as Sustainable Electrocatalyst Support for Direct Liquid Fuel Cells. in Catalysts. 2023;13(3):525.
doi:10.3390/catal13030525 .

Elessawy, Noha A., Backović, Gordana, Hirunthanawat, Janesuda, Martins, Marta, Rakočević, Lazar, Gouda, Marwa H., Toghan, Arafat, Youssef, Mohamed E., Šljukić, Biljana, Santos, Diogo M. F., "From PET Bottles Waste to N-Doped Graphene as Sustainable Electrocatalyst Support for Direct Liquid Fuel Cells" in Catalysts, 13, no. 3 (2023):525,
https://doi.org/10.3390/catal13030525 . .

TY  - JOUR
AU  - Milikić, Jadranka
AU  - Stojanović, Srna
AU  - Damjanović-Vasilić, Ljiljana
AU  - Vasilić, Rastko
AU  - Rakočević, Lazar
AU  - Lazarević, Slavica
AU  - Šljukić, Biljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11353
AB  - Zeolite ZSM-5 and zeolite β were modified by aqueous ion exchange with cerium and then calcined (cal) to obtain Ce-ZSM-5, Ce-ZSM-5 cal, Ce-β, and Ce-β cal electrocatalysts. X-ray powder diffraction analysis, Fourier Ttransform infrared spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, X-ray photoelectron spectroscopy, fluorescence spectroscopy, and Brunauer-Emmett-Teller method revealed changes in the structure and porosity of zeolites upon calcination. Voltammetry, chronoamperometry, and electrochemical impedance spectroscopy were used for testing four zeolites for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in alkaline media. OER starts the earliest at Ce-β cal with onset overpotential 50, 70, and 110 mV lower than Ce-ZSM-5 cal, Ce-ZSM-5, and Ce-β. Ce-β cal further showed the lowest OER Tafel slope (114 mV dec− 1 ). Consequently, the highest OER current density was recorded in the case of Ce-β cal, followed by Ce-β, Ce-ZSM-5 cal, and Ce-ZSM-5. Regarding ORR, Ce-ZSM-5 cal showed the lowest Tafel slope (70 mV dec− 1 ) with the highest current densities that remained constant during the chronoamperometry test with a negligible decrease of 4%. It could be concluded that calcined forms exhibit better performance for OER and OER than their parent, non-calcined forms due to more active sites available for OER/ORR and decreased charge-transfer resistance.
T2  - Journal of Electroanalytical Chemistry
T1  - Porous cerium-zeolite bifunctional ORR/OER electrocatalysts in alkaline media
VL  - 944
SP  - 117668
DO  - 10.1016/j.jelechem.2023.117668
ER  - 

@article{
author = "Milikić, Jadranka and Stojanović, Srna and Damjanović-Vasilić, Ljiljana and Vasilić, Rastko and Rakočević, Lazar and Lazarević, Slavica and Šljukić, Biljana",
year = "2023",
abstract = "Zeolite ZSM-5 and zeolite β were modified by aqueous ion exchange with cerium and then calcined (cal) to obtain Ce-ZSM-5, Ce-ZSM-5 cal, Ce-β, and Ce-β cal electrocatalysts. X-ray powder diffraction analysis, Fourier Ttransform infrared spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, X-ray photoelectron spectroscopy, fluorescence spectroscopy, and Brunauer-Emmett-Teller method revealed changes in the structure and porosity of zeolites upon calcination. Voltammetry, chronoamperometry, and electrochemical impedance spectroscopy were used for testing four zeolites for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in alkaline media. OER starts the earliest at Ce-β cal with onset overpotential 50, 70, and 110 mV lower than Ce-ZSM-5 cal, Ce-ZSM-5, and Ce-β. Ce-β cal further showed the lowest OER Tafel slope (114 mV dec− 1 ). Consequently, the highest OER current density was recorded in the case of Ce-β cal, followed by Ce-β, Ce-ZSM-5 cal, and Ce-ZSM-5. Regarding ORR, Ce-ZSM-5 cal showed the lowest Tafel slope (70 mV dec− 1 ) with the highest current densities that remained constant during the chronoamperometry test with a negligible decrease of 4%. It could be concluded that calcined forms exhibit better performance for OER and OER than their parent, non-calcined forms due to more active sites available for OER/ORR and decreased charge-transfer resistance.",
journal = "Journal of Electroanalytical Chemistry",
title = "Porous cerium-zeolite bifunctional ORR/OER electrocatalysts in alkaline media",
volume = "944",
pages = "117668",
doi = "10.1016/j.jelechem.2023.117668"
}

Milikić, J., Stojanović, S., Damjanović-Vasilić, L., Vasilić, R., Rakočević, L., Lazarević, S.,& Šljukić, B.. (2023). Porous cerium-zeolite bifunctional ORR/OER electrocatalysts in alkaline media. in Journal of Electroanalytical Chemistry, 944, 117668.
https://doi.org/10.1016/j.jelechem.2023.117668

Milikić J, Stojanović S, Damjanović-Vasilić L, Vasilić R, Rakočević L, Lazarević S, Šljukić B. Porous cerium-zeolite bifunctional ORR/OER electrocatalysts in alkaline media. in Journal of Electroanalytical Chemistry. 2023;944:117668.
doi:10.1016/j.jelechem.2023.117668 .

Milikić, Jadranka, Stojanović, Srna, Damjanović-Vasilić, Ljiljana, Vasilić, Rastko, Rakočević, Lazar, Lazarević, Slavica, Šljukić, Biljana, "Porous cerium-zeolite bifunctional ORR/OER electrocatalysts in alkaline media" in Journal of Electroanalytical Chemistry, 944 (2023):117668,
https://doi.org/10.1016/j.jelechem.2023.117668 . .

TY  - CONF
AU  - Vasiljević, Zorka
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar-Merah, Souad
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11742
AB  - Mixed spinel ferrites MgxNi1-xFe2O4 were synthesized via sol-gel combustion synthesis with citric acid as fuel, followed by calcination at 700 °C for 3 hours. Obtained powders were characterized via X-ray diffraction analysis (XRD), X-ray photoelectron (XPS), FTIR and Raman spectroscopy and FESEM microscopy. Elemental composition was examined via energy dispersive spectroscopy (EDS). Humidity sensing properties were tested by measuring AC impedance in a climactic chamber at 25 °C and in the relative humidity range of 40–90%. Temperature sensing properties were tested by measuring DC resistance at 40% RH in the temperature range 40–90 °C. Synthesized powders were proven to be pure spinel Fd 3m phase with spherical, slightly agglomerated particles. Substitution of Mg with Ni results in structural changes such as a change in inversion parameter and particle agglomeration, which influences sensing properties of the material. Results show that the sensing properties of magnesium ferrite, which is already a well-established NTC sensor, can be improved by incorporating 10% of nickel in the spinel lattice structure. Mg0.9Ni0.1Fe2O4 exhibited higher temperature sensitivity and higher sensitivity towards humidity compared to MgFe2O4, while further substitution of Mg with Ni resulted in the decline of sensing properties, increase in particle size and agglomeration degree.
PB  - Novi Sad : Faculty of Technology, University of Novi Sad
C3  - CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad
T1  - Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4
SP  - 62
EP  - 62
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11742
ER  - 

@conference{
author = "Vasiljević, Zorka and Rakočević, Lazar and Pavlović, Vera P. and Ammar-Merah, Souad and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2023",
abstract = "Mixed spinel ferrites MgxNi1-xFe2O4 were synthesized via sol-gel combustion synthesis with citric acid as fuel, followed by calcination at 700 °C for 3 hours. Obtained powders were characterized via X-ray diffraction analysis (XRD), X-ray photoelectron (XPS), FTIR and Raman spectroscopy and FESEM microscopy. Elemental composition was examined via energy dispersive spectroscopy (EDS). Humidity sensing properties were tested by measuring AC impedance in a climactic chamber at 25 °C and in the relative humidity range of 40–90%. Temperature sensing properties were tested by measuring DC resistance at 40% RH in the temperature range 40–90 °C. Synthesized powders were proven to be pure spinel Fd 3m phase with spherical, slightly agglomerated particles. Substitution of Mg with Ni results in structural changes such as a change in inversion parameter and particle agglomeration, which influences sensing properties of the material. Results show that the sensing properties of magnesium ferrite, which is already a well-established NTC sensor, can be improved by incorporating 10% of nickel in the spinel lattice structure. Mg0.9Ni0.1Fe2O4 exhibited higher temperature sensitivity and higher sensitivity towards humidity compared to MgFe2O4, while further substitution of Mg with Ni resulted in the decline of sensing properties, increase in particle size and agglomeration degree.",
publisher = "Novi Sad : Faculty of Technology, University of Novi Sad",
journal = "CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad",
title = "Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4",
pages = "62-62",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11742"
}

Vasiljević, Z., Rakočević, L., Pavlović, V. P., Ammar-Merah, S., Vujančević, J.,& Nikolić, M. V.. (2023). Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad
Novi Sad : Faculty of Technology, University of Novi Sad., 62-62.
https://hdl.handle.net/21.15107/rcub_vinar_11742

Vasiljević Z, Rakočević L, Pavlović VP, Ammar-Merah S, Vujančević J, Nikolić MV. Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad. 2023;:62-62.
https://hdl.handle.net/21.15107/rcub_vinar_11742 .

Vasiljević, Zorka, Rakočević, Lazar, Pavlović, Vera P., Ammar-Merah, Souad, Vujančević, Jelena, Nikolić, Maria Vesna, "Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4" in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad (2023):62-62,
https://hdl.handle.net/21.15107/rcub_vinar_11742 .

TY  - JOUR
AU  - Milićević, Nemanja
AU  - Novaković, Mirjana M.
AU  - Potočnik, Jelena
AU  - Milović, Miloš
AU  - Rakočević, Lazar
AU  - Abazović, Nadica
AU  - Pjević, Dejan J.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10194
AB  - Enhanced optical properties of TiO2 thin films can be achieved by doping or coating with metals. Metal-doped TiO2 can reduce electron-hole recombination and increase hydroxyl radical concentration on the surface of TiO2, resulting in increase of the photocatalytic activity. TiO2 and TiO2-Au thin films were obtained by DC magnetron sputtering of Ti target with Ar ions in O2 atmosphere. In the case of Au buffered TiO2 thin films, two different systems were deposited for comparison. Post deposition annealing at 400 °C was carried out in nitrogen atmosphere for 3 h. The structural and optical characteristics of the prepared films were investigated in detail by the combination of high-resolution microscopic and spectroscopic techniques. The photo-degradation rate was measured using Rhodamine B which simulated pollutant. Post deposition annealing resulted in diffusion of Au atoms through the layer as it was revealed by transmission electron microscopy and energy dispersive X-ray spectroscopy. The obtained TiO2 thin films were found to be amorphous after deposition and annealing at 400 °C leads to crystallization of anatase phase. Analysis of the binding energy in the corresponding X-ray photoelectron spectra has confirmed stoichiometry of TiO2 and that concentration of Au on the surface can be controlled by sputtering and annealing conditions, thus changing optical properties by influencing the surface plasmonic nature. All Au doped TiO2 thin films exhibited enhanced wettability and photo-degradation rates when compared to pristine titania films. © 2022 Elsevier B.V.
T2  - Surfaces and Interfaces
T1  - Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing
VL  - 30
SP  - 101811
DO  - 10.1016/j.surfin.2022.101811
ER  - 

@article{
author = "Milićević, Nemanja and Novaković, Mirjana M. and Potočnik, Jelena and Milović, Miloš and Rakočević, Lazar and Abazović, Nadica and Pjević, Dejan J.",
year = "2022",
abstract = "Enhanced optical properties of TiO2 thin films can be achieved by doping or coating with metals. Metal-doped TiO2 can reduce electron-hole recombination and increase hydroxyl radical concentration on the surface of TiO2, resulting in increase of the photocatalytic activity. TiO2 and TiO2-Au thin films were obtained by DC magnetron sputtering of Ti target with Ar ions in O2 atmosphere. In the case of Au buffered TiO2 thin films, two different systems were deposited for comparison. Post deposition annealing at 400 °C was carried out in nitrogen atmosphere for 3 h. The structural and optical characteristics of the prepared films were investigated in detail by the combination of high-resolution microscopic and spectroscopic techniques. The photo-degradation rate was measured using Rhodamine B which simulated pollutant. Post deposition annealing resulted in diffusion of Au atoms through the layer as it was revealed by transmission electron microscopy and energy dispersive X-ray spectroscopy. The obtained TiO2 thin films were found to be amorphous after deposition and annealing at 400 °C leads to crystallization of anatase phase. Analysis of the binding energy in the corresponding X-ray photoelectron spectra has confirmed stoichiometry of TiO2 and that concentration of Au on the surface can be controlled by sputtering and annealing conditions, thus changing optical properties by influencing the surface plasmonic nature. All Au doped TiO2 thin films exhibited enhanced wettability and photo-degradation rates when compared to pristine titania films. © 2022 Elsevier B.V.",
journal = "Surfaces and Interfaces",
title = "Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing",
volume = "30",
pages = "101811",
doi = "10.1016/j.surfin.2022.101811"
}

Milićević, N., Novaković, M. M., Potočnik, J., Milović, M., Rakočević, L., Abazović, N.,& Pjević, D. J.. (2022). Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing. in Surfaces and Interfaces, 30, 101811.
https://doi.org/10.1016/j.surfin.2022.101811

Milićević N, Novaković MM, Potočnik J, Milović M, Rakočević L, Abazović N, Pjević DJ. Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing. in Surfaces and Interfaces. 2022;30:101811.
doi:10.1016/j.surfin.2022.101811 .

Milićević, Nemanja, Novaković, Mirjana M., Potočnik, Jelena, Milović, Miloš, Rakočević, Lazar, Abazović, Nadica, Pjević, Dejan J., "Influencing surface phenomena by Au diffusion in buffered TiO2-Au thin films: Effects of deposition and annealing processing" in Surfaces and Interfaces, 30 (2022):101811,
https://doi.org/10.1016/j.surfin.2022.101811 . .

TY  - JOUR
AU  - Ječmenica Dučić, Marija
AU  - Aćimović, Danka
AU  - Savić, Branislava
AU  - Rakočević, Lazar
AU  - Simić, Marija
AU  - Brdarić, Tanja
AU  - Vasić Anićijević, Dragana D.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10412
AB  - This paper presents a comparative analysis of three carbon-based electrodes: bare multiwalled carbon nanotubes (MWCNT), SnO2/MWCNT, and PbO2/graphene-nanoribbons (PbO2/GNR) composites, as anodes for the electrooxidative degradation of Rhodamine B as a model organic pollutant. Anodic electrooxidation of Rhodamine B was performed on all three electrodes, and the decolorization efficiency was found to increase in the order MWCNT < PbO2/GNR < SnO2/MWCNT. The electrodes were characterized by X-ray photoelectron spectroscopy (XPS) and linear sweep voltammetry (LSV). It was proposed that, in the 0.1 M Na2SO4 applied as electrolyte, observed decolorization mainly occurs in the interaction of Rhodamine B with OH radical adsorbed on the anode. Finally, the obtained results were complemented with Density Functional Theory (DFT) calculations of OH-radical interaction with appropriate model surfaces: graphene(0001), SnO2(001), and PbO2(001). It was found that the stabilization of adsorbed OH-radical on metal oxide spots (SnO2 or PbO2) compared to carbon is responsible for the improved efficiency of composites in the degradation of Rhodamine B. The observed ability of metal oxides to improve the electrooxidative potential of carbon towards organic compounds can be useful in the future design of appropriate anodes.
T2  - Molecules
T1  - Is It Possible to Restrain OER on Simple Carbon Electrodes to Efficiently Electrooxidize Organic Pollutants?
VL  - 27
IS  - 16
SP  - 5203
DO  - 10.3390/molecules27165203
ER  - 

@article{
author = "Ječmenica Dučić, Marija and Aćimović, Danka and Savić, Branislava and Rakočević, Lazar and Simić, Marija and Brdarić, Tanja and Vasić Anićijević, Dragana D.",
year = "2022",
abstract = "This paper presents a comparative analysis of three carbon-based electrodes: bare multiwalled carbon nanotubes (MWCNT), SnO2/MWCNT, and PbO2/graphene-nanoribbons (PbO2/GNR) composites, as anodes for the electrooxidative degradation of Rhodamine B as a model organic pollutant. Anodic electrooxidation of Rhodamine B was performed on all three electrodes, and the decolorization efficiency was found to increase in the order MWCNT < PbO2/GNR < SnO2/MWCNT. The electrodes were characterized by X-ray photoelectron spectroscopy (XPS) and linear sweep voltammetry (LSV). It was proposed that, in the 0.1 M Na2SO4 applied as electrolyte, observed decolorization mainly occurs in the interaction of Rhodamine B with OH radical adsorbed on the anode. Finally, the obtained results were complemented with Density Functional Theory (DFT) calculations of OH-radical interaction with appropriate model surfaces: graphene(0001), SnO2(001), and PbO2(001). It was found that the stabilization of adsorbed OH-radical on metal oxide spots (SnO2 or PbO2) compared to carbon is responsible for the improved efficiency of composites in the degradation of Rhodamine B. The observed ability of metal oxides to improve the electrooxidative potential of carbon towards organic compounds can be useful in the future design of appropriate anodes.",
journal = "Molecules",
title = "Is It Possible to Restrain OER on Simple Carbon Electrodes to Efficiently Electrooxidize Organic Pollutants?",
volume = "27",
number = "16",
pages = "5203",
doi = "10.3390/molecules27165203"
}

Ječmenica Dučić, M., Aćimović, D., Savić, B., Rakočević, L., Simić, M., Brdarić, T.,& Vasić Anićijević, D. D.. (2022). Is It Possible to Restrain OER on Simple Carbon Electrodes to Efficiently Electrooxidize Organic Pollutants?. in Molecules, 27(16), 5203.
https://doi.org/10.3390/molecules27165203

Ječmenica Dučić M, Aćimović D, Savić B, Rakočević L, Simić M, Brdarić T, Vasić Anićijević DD. Is It Possible to Restrain OER on Simple Carbon Electrodes to Efficiently Electrooxidize Organic Pollutants?. in Molecules. 2022;27(16):5203.
doi:10.3390/molecules27165203 .

Ječmenica Dučić, Marija, Aćimović, Danka, Savić, Branislava, Rakočević, Lazar, Simić, Marija, Brdarić, Tanja, Vasić Anićijević, Dragana D., "Is It Possible to Restrain OER on Simple Carbon Electrodes to Efficiently Electrooxidize Organic Pollutants?" in Molecules, 27, no. 16 (2022):5203,
https://doi.org/10.3390/molecules27165203 . .

TY  - CONF
AU  - Milicevic, N.
AU  - Novaković, Mirjana M.
AU  - Potočnik, Jelena
AU  - Rakočević, Lazar
AU  - Milović, Miloš
AU  - Abazović, Nadica
AU  - Pjević, Dejan J.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10908
AB  - One of the ways to increase efficiency of TiO2 thin films is by doping and coating with metals. Metaldoped TiO2 can reduce electron-hole recombination and increase hydroxyl radical concentration on the surface of TiO2, resulting in increase in the photocatalytic activity.Recent studies of J. Li at al.[1] and S. Y. Lee et al.[2] with Au doped TiO2 thin films showed that this systems have enhanced photocatalytic activity in comparison to pure TiO2 thin films. Also recent study[3] showed that Au doped TiO2 thin films are great candidates beside photocatalysis for enhancing visible light water splitting.TiO2 and TiO2:Au thin films were obtained by DC magnetron sputtering of Ti target with Ar ions in O2 atmosphere. In the case of doped TiO2 thin films with Au, three different systems were deposited for comparison (Fig.1). Post deposition annealing for 3h on 400 °C was carried out in nitrogen atmosphere. For structural analyses XRD, XPS, TEM and AFM methods were used, while for optical characterization UV/Vis method was used. The photo-degradation rate was measured using Rhodamine B which simulated pollutant. Analysis of the binding energy in the corresponding XPS spectra showed that deposited films have good stoichiometry of TiO2 and that concentration of Au on the surface can be controlled by sputtering and annealing conditions. Post deposition annealing caused diffusion of Au atoms through the layer as it was shown by TEM and EDS. Obtained TiO2 thin films before deposition were amorphous-like structured, and after annealing on 400 °C showed that anatase phase dominates in the structure. All Au doped TiO2 thin films showed better photo-degradation rates then pure TiO2.
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - Influencing on optical properties of buffered TiO2-Au thin film systems by deposition and annealing parameters
SP  - 89
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10908
ER  - 

@conference{
author = "Milicevic, N. and Novaković, Mirjana M. and Potočnik, Jelena and Rakočević, Lazar and Milović, Miloš and Abazović, Nadica and Pjević, Dejan J.",
year = "2021",
abstract = "One of the ways to increase efficiency of TiO2 thin films is by doping and coating with metals. Metaldoped TiO2 can reduce electron-hole recombination and increase hydroxyl radical concentration on the surface of TiO2, resulting in increase in the photocatalytic activity.Recent studies of J. Li at al.[1] and S. Y. Lee et al.[2] with Au doped TiO2 thin films showed that this systems have enhanced photocatalytic activity in comparison to pure TiO2 thin films. Also recent study[3] showed that Au doped TiO2 thin films are great candidates beside photocatalysis for enhancing visible light water splitting.TiO2 and TiO2:Au thin films were obtained by DC magnetron sputtering of Ti target with Ar ions in O2 atmosphere. In the case of doped TiO2 thin films with Au, three different systems were deposited for comparison (Fig.1). Post deposition annealing for 3h on 400 °C was carried out in nitrogen atmosphere. For structural analyses XRD, XPS, TEM and AFM methods were used, while for optical characterization UV/Vis method was used. The photo-degradation rate was measured using Rhodamine B which simulated pollutant. Analysis of the binding energy in the corresponding XPS spectra showed that deposited films have good stoichiometry of TiO2 and that concentration of Au on the surface can be controlled by sputtering and annealing conditions. Post deposition annealing caused diffusion of Au atoms through the layer as it was shown by TEM and EDS. Obtained TiO2 thin films before deposition were amorphous-like structured, and after annealing on 400 °C showed that anatase phase dominates in the structure. All Au doped TiO2 thin films showed better photo-degradation rates then pure TiO2.",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "Influencing on optical properties of buffered TiO2-Au thin film systems by deposition and annealing parameters",
pages = "89",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10908"
}

Milicevic, N., Novaković, M. M., Potočnik, J., Rakočević, L., Milović, M., Abazović, N.,& Pjević, D. J.. (2021). Influencing on optical properties of buffered TiO2-Au thin film systems by deposition and annealing parameters. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics Belgrade., 89.
https://hdl.handle.net/21.15107/rcub_vinar_10908

Milicevic N, Novaković MM, Potočnik J, Rakočević L, Milović M, Abazović N, Pjević DJ. Influencing on optical properties of buffered TiO2-Au thin film systems by deposition and annealing parameters. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:89.
https://hdl.handle.net/21.15107/rcub_vinar_10908 .

Milicevic, N., Novaković, Mirjana M., Potočnik, Jelena, Rakočević, Lazar, Milović, Miloš, Abazović, Nadica, Pjević, Dejan J., "Influencing on optical properties of buffered TiO2-Au thin film systems by deposition and annealing parameters" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):89,
https://hdl.handle.net/21.15107/rcub_vinar_10908 .

TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Ivanović, Marija M.
AU  - Mirković, Miljana M.
AU  - Radmilović, Nadežda
AU  - Rakočević, Lazar
AU  - Nenadović, Miloš
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10032
AB  - The present work was focused on doping of 1% and 5% both of Nd2O3 and Sm2O3 in geopolymer gels. One of the main goals was to determine the influence of the behavior of Nd and Sm as dopants and structural nanoparticles changes of the final geopolymer formed. It is shown that the disorder formed by alkali activation of metakaolin can accommodate the rare earth cations Nd3+ and Sm3+ into their aluminosilicate framework structure. The main geopolymerization product identified in gels is Al-rich (Na)-AS-H gel comprising Al and Si in tetrahedral coordination. Na+ ions were balancing the negative charge resulting from Al3+ in tetrahedral coordination. The changes in the structures of the final product (geopolymer/Nd2O3; Sm2O3), has been characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analysis with energy dispersive spectrometry (EDS). Nucleation at the seed surfaces leads to the formation of phase-separated gels from rare earth phase early in the reaction process. It is confirmed that Nd and Sm have been shown to form unstable hydroxides Nd(OH)3 and Sm(OH)3 that are in equilibrium with the corresponding oxides.
T2  - Gels
T1  - Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium
VL  - 7
IS  - 4
SP  - 195
DO  - 10.3390/gels7040195
ER  - 

@article{
author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Ivanović, Marija M. and Mirković, Miljana M. and Radmilović, Nadežda and Rakočević, Lazar and Nenadović, Miloš",
year = "2021",
abstract = "The present work was focused on doping of 1% and 5% both of Nd2O3 and Sm2O3 in geopolymer gels. One of the main goals was to determine the influence of the behavior of Nd and Sm as dopants and structural nanoparticles changes of the final geopolymer formed. It is shown that the disorder formed by alkali activation of metakaolin can accommodate the rare earth cations Nd3+ and Sm3+ into their aluminosilicate framework structure. The main geopolymerization product identified in gels is Al-rich (Na)-AS-H gel comprising Al and Si in tetrahedral coordination. Na+ ions were balancing the negative charge resulting from Al3+ in tetrahedral coordination. The changes in the structures of the final product (geopolymer/Nd2O3; Sm2O3), has been characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analysis with energy dispersive spectrometry (EDS). Nucleation at the seed surfaces leads to the formation of phase-separated gels from rare earth phase early in the reaction process. It is confirmed that Nd and Sm have been shown to form unstable hydroxides Nd(OH)3 and Sm(OH)3 that are in equilibrium with the corresponding oxides.",
journal = "Gels",
title = "Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium",
volume = "7",
number = "4",
pages = "195",
doi = "10.3390/gels7040195"
}

Nenadović, S. S., Kljajević, L. M., Ivanović, M. M., Mirković, M. M., Radmilović, N., Rakočević, L.,& Nenadović, M.. (2021). Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium. in Gels, 7(4), 195.
https://doi.org/10.3390/gels7040195

Nenadović SS, Kljajević LM, Ivanović MM, Mirković MM, Radmilović N, Rakočević L, Nenadović M. Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium. in Gels. 2021;7(4):195.
doi:10.3390/gels7040195 .

Nenadović, Snežana S., Kljajević, Ljiljana M., Ivanović, Marija M., Mirković, Miljana M., Radmilović, Nadežda, Rakočević, Lazar, Nenadović, Miloš, "Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium" in Gels, 7, no. 4 (2021):195,
https://doi.org/10.3390/gels7040195 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Potočnik, Jelena
AU  - Popović, Maja
AU  - Jugović, Dragana
AU  - Stojković-Simatović, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10203
AB  - Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.
T2  - Ceramics International
T1  - The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries
VL  - 47
IS  - 4
SP  - 4595
EP  - 4603
DO  - 10.1016/j.ceramint.2020.10.025
UR  - https://hdl.handle.net/21.15107/rcub_dais_11229
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Potočnik, Jelena and Popović, Maja and Jugović, Dragana and Stojković-Simatović, Ivana",
year = "2021",
abstract = "Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.",
journal = "Ceramics International",
title = "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries",
volume = "47",
number = "4",
pages = "4595-4603",
doi = "10.1016/j.ceramint.2020.10.025",
url = "https://hdl.handle.net/21.15107/rcub_dais_11229"
}

Rakočević, L., Štrbac, S., Potočnik, J., Popović, M., Jugović, D.,& Stojković-Simatović, I.. (2021). The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. in Ceramics International, 47(4), 4595-4603.
https://doi.org/10.1016/j.ceramint.2020.10.025
https://hdl.handle.net/21.15107/rcub_dais_11229

Rakočević L, Štrbac S, Potočnik J, Popović M, Jugović D, Stojković-Simatović I. The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. in Ceramics International. 2021;47(4):4595-4603.
doi:10.1016/j.ceramint.2020.10.025
https://hdl.handle.net/21.15107/rcub_dais_11229 .

Rakočević, Lazar, Štrbac, Svetlana, Potočnik, Jelena, Popović, Maja, Jugović, Dragana, Stojković-Simatović, Ivana, "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries" in Ceramics International, 47, no. 4 (2021):4595-4603,
https://doi.org/10.1016/j.ceramint.2020.10.025 .,
https://hdl.handle.net/21.15107/rcub_dais_11229 .

TY  - CONF
AU  - Božinović, Nevena
AU  - Milovanović, Dubravka S.
AU  - Rajić, Vladimir
AU  - Rakočević, Lazar
AU  - Savović, Jelena
AU  - Petrović, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10913
AB  - Design of surface patterning with the co-existence of micro- and nanoscale features by picosecond laser processing is investigated in order to improve cell integration. New biomedical Ti alloys with a high concentration of β-stabilizer elements (zirconium) are developed, as potential solutions to the mismatch between the Young’s modulus of the implant and the surrounding hard tissues. On the other hand, in order to enhance the tribological and antimicrobial properties of Ti/Zr coating, a novel titanium-copper and titanium-copper-zirconium thin film systems were designed in this work. Novel composite structure composed of subsurface distributed Cu and Zr layers (thickness of 10 nm), with satisfying mechanical properties and moderate biocompatibility, were deposited by ion sputtering on Si substrate to the total thickness of 300 nm. The multilayer thin films were irradiated by focused linearly p-polarised picosecond pulses with follow characteristics: repetition rate of 10 Hz, pulse duration equal to 150 ps, central wavelength of 1064 nm and 120 µm Gaussian spot diameter. The changes of the composition and surface morphology in the Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films were monitored by X-ray photoelectron spectroscopy (XPS), by scanning electron microscopy (SEM) and by profilometry. The main part of the absorbed laser energy was rapidly transformed into heat, producing intensive modifications of composition and morphology on the multilayer surface [1,2]. The results show an increase in surface roughness, formation of a specific surface topography, appearance of hydrodynamic features and ablation of surface material. XPS analysis revealed that laser modification was induced intermixing between the Cu and Zr layers, but also with dominant Ti component. During the laser processing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films, delivered energy was sufficient to cause solid-state reactions, the formation of alloy between components. Laser processing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films is used to create the arrayed surface structure, such as laser-induced periodic surface structures (LIPSS) and at the same time to induce mixing of components inside the thin film structures, as well as the formation of ultrathin oxide layer at the laser-treated surfaces [3,4]. Laser surface patterns are organized as networks and parallel lines, where lines formed of LIPSS are wide up to 100 μm and distance between lines are less than 300 μm. The average periodicity between LIPSSs was about 900 nm, which would correspond to the formation of low spatial frequency LIPSS (LSFL).
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films
SP  - 153
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10913
ER  - 

@conference{
author = "Božinović, Nevena and Milovanović, Dubravka S. and Rajić, Vladimir and Rakočević, Lazar and Savović, Jelena and Petrović, Suzana",
year = "2021",
abstract = "Design of surface patterning with the co-existence of micro- and nanoscale features by picosecond laser processing is investigated in order to improve cell integration. New biomedical Ti alloys with a high concentration of β-stabilizer elements (zirconium) are developed, as potential solutions to the mismatch between the Young’s modulus of the implant and the surrounding hard tissues. On the other hand, in order to enhance the tribological and antimicrobial properties of Ti/Zr coating, a novel titanium-copper and titanium-copper-zirconium thin film systems were designed in this work. Novel composite structure composed of subsurface distributed Cu and Zr layers (thickness of 10 nm), with satisfying mechanical properties and moderate biocompatibility, were deposited by ion sputtering on Si substrate to the total thickness of 300 nm. The multilayer thin films were irradiated by focused linearly p-polarised picosecond pulses with follow characteristics: repetition rate of 10 Hz, pulse duration equal to 150 ps, central wavelength of 1064 nm and 120 µm Gaussian spot diameter. The changes of the composition and surface morphology in the Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films were monitored by X-ray photoelectron spectroscopy (XPS), by scanning electron microscopy (SEM) and by profilometry. The main part of the absorbed laser energy was rapidly transformed into heat, producing intensive modifications of composition and morphology on the multilayer surface [1,2]. The results show an increase in surface roughness, formation of a specific surface topography, appearance of hydrodynamic features and ablation of surface material. XPS analysis revealed that laser modification was induced intermixing between the Cu and Zr layers, but also with dominant Ti component. During the laser processing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films, delivered energy was sufficient to cause solid-state reactions, the formation of alloy between components. Laser processing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films is used to create the arrayed surface structure, such as laser-induced periodic surface structures (LIPSS) and at the same time to induce mixing of components inside the thin film structures, as well as the formation of ultrathin oxide layer at the laser-treated surfaces [3,4]. Laser surface patterns are organized as networks and parallel lines, where lines formed of LIPSS are wide up to 100 μm and distance between lines are less than 300 μm. The average periodicity between LIPSSs was about 900 nm, which would correspond to the formation of low spatial frequency LIPSS (LSFL).",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films",
pages = "153",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10913"
}

Božinović, N., Milovanović, D. S., Rajić, V., Rakočević, L., Savović, J.,& Petrović, S.. (2021). Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics Belgrade., 153.
https://hdl.handle.net/21.15107/rcub_vinar_10913

Božinović N, Milovanović DS, Rajić V, Rakočević L, Savović J, Petrović S. Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:153.
https://hdl.handle.net/21.15107/rcub_vinar_10913 .

Božinović, Nevena, Milovanović, Dubravka S., Rajić, Vladimir, Rakočević, Lazar, Savović, Jelena, Petrović, Suzana, "Laser surface texturing of Ti/Cu/Ti/Si and Ti/Cu/Zr/Ti/Si multilayer thin films" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):153,
https://hdl.handle.net/21.15107/rcub_vinar_10913 .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Potočnik, Jelena
AU  - Popović, Maja
AU  - Jugović, Dragana
AU  - Stojković-Simatović, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10202
AB  - Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.
T2  - Ceramics International
T1  - The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries
VL  - 47
IS  - 4
SP  - 4595
EP  - 4603
DO  - 10.1016/j.ceramint.2020.10.025
UR  - https://hdl.handle.net/21.15107/rcub_dais_11229
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Potočnik, Jelena and Popović, Maja and Jugović, Dragana and Stojković-Simatović, Ivana",
year = "2021",
abstract = "Cathodic material for sodium-ion rechargeable batteries based on NaxMnO2 were synthesized by glycine nitrate method and subsequent annealing at high temperatures. Different crystal structures with different morphologies were obtained depending on the annealing temperature: hexagonal layeredα-Na0.7MnO2.05 nanoplates were obtained at 850 ◦C, while 3-D tunnel structured Na0⋅4MnO2 and Na0⋅44MnO2, both with rod-like morphology, were obtained at 800 ◦C and 900 ◦C, respectively. The investigations of the electrochemical behavior of obtained cathodic materials in aqueous NaNO3 solution have shown that Na0⋅44MnO2 obtained at 900 ◦C has shown the best battery performance. Its initial discharge capacities are 123.5 mA h/g, 113.2 mA h/g, and 102.0 mA h/g at the high current densities of 1000, 2000 and 5000 mA/g, respectively.",
journal = "Ceramics International",
title = "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries",
volume = "47",
number = "4",
pages = "4595-4603",
doi = "10.1016/j.ceramint.2020.10.025",
url = "https://hdl.handle.net/21.15107/rcub_dais_11229"
}

Rakočević, L., Štrbac, S., Potočnik, J., Popović, M., Jugović, D.,& Stojković-Simatović, I.. (2021). The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. in Ceramics International, 47(4), 4595-4603.
https://doi.org/10.1016/j.ceramint.2020.10.025
https://hdl.handle.net/21.15107/rcub_dais_11229

Rakočević L, Štrbac S, Potočnik J, Popović M, Jugović D, Stojković-Simatović I. The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries. in Ceramics International. 2021;47(4):4595-4603.
doi:10.1016/j.ceramint.2020.10.025
https://hdl.handle.net/21.15107/rcub_dais_11229 .

Rakočević, Lazar, Štrbac, Svetlana, Potočnik, Jelena, Popović, Maja, Jugović, Dragana, Stojković-Simatović, Ivana, "The NaxMnO2 materials prepared by a glycine-nitrate method as advanced cathode materials for aqueous sodium-ion rechargeable batteries" in Ceramics International, 47, no. 4 (2021):4595-4603,
https://doi.org/10.1016/j.ceramint.2020.10.025 .,
https://hdl.handle.net/21.15107/rcub_dais_11229 .

TY  - CONF
AU  - Stamenković, Tijana
AU  - Rakočević, Lazar
AU  - Barudžija, Tanja
AU  - Validžić, Ivana Lj.
AU  - Lojpur, Vesna
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10810
AB  - X-ray photoelectron spectroscopy (XPS) measurements were used for analyzing the incorporation of iodine (I) and tin (Sn) into the stibnite (Sb2 S3 ) lattice obtained via the hot- injection method. The X-ray diffraction (XRD) technique revealed the visible presence of one phase, the pure orthorhombic structure of Sb 2 S3 with the Pnma group. Scanning electron microscopy (SEM) showed long columnar structures with length of few nanometers and diameter of about 150 nm.The incorporation of I and Sn into Sb 2 S3 was verified by comparing the XPS spectra of the non-doped Sb2 S3 and iodine and tin-doped samples, by the distinctive appearance of characteristic 3d peaks of iodine and tin. As well, the relative amounts of I and Sn dopants were determined from the I 3d5/2 and Sn 3d 5/2 , respectively. The obtained, lesser than expected, amount of dopants is likely due to a possible weakening of I and Sn signals. Shifting of the valence band towards higher (I-doped Sb2S3 ) or lower (Sn-doped Sb2 S3 ) energies, related to the non-doped sample, also confirmed the successful incorporation of dopant atoms in the Sb2 S3 lattice.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Study of iodine (n) and tin (p) doped Sb2S3 nanoparticles by detail X-ray photoelectron spectroscopy
SP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10810
ER  - 

@conference{
author = "Stamenković, Tijana and Rakočević, Lazar and Barudžija, Tanja and Validžić, Ivana Lj. and Lojpur, Vesna",
year = "2021",
abstract = "X-ray photoelectron spectroscopy (XPS) measurements were used for analyzing the incorporation of iodine (I) and tin (Sn) into the stibnite (Sb2 S3 ) lattice obtained via the hot- injection method. The X-ray diffraction (XRD) technique revealed the visible presence of one phase, the pure orthorhombic structure of Sb 2 S3 with the Pnma group. Scanning electron microscopy (SEM) showed long columnar structures with length of few nanometers and diameter of about 150 nm.The incorporation of I and Sn into Sb 2 S3 was verified by comparing the XPS spectra of the non-doped Sb2 S3 and iodine and tin-doped samples, by the distinctive appearance of characteristic 3d peaks of iodine and tin. As well, the relative amounts of I and Sn dopants were determined from the I 3d5/2 and Sn 3d 5/2 , respectively. The obtained, lesser than expected, amount of dopants is likely due to a possible weakening of I and Sn signals. Shifting of the valence band towards higher (I-doped Sb2S3 ) or lower (Sn-doped Sb2 S3 ) energies, related to the non-doped sample, also confirmed the successful incorporation of dopant atoms in the Sb2 S3 lattice.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Study of iodine (n) and tin (p) doped Sb2S3 nanoparticles by detail X-ray photoelectron spectroscopy",
pages = "68",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10810"
}

Stamenković, T., Rakočević, L., Barudžija, T., Validžić, I. Lj.,& Lojpur, V.. (2021). Study of iodine (n) and tin (p) doped Sb2S3 nanoparticles by detail X-ray photoelectron spectroscopy. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 68.
https://hdl.handle.net/21.15107/rcub_vinar_10810

Stamenković T, Rakočević L, Barudžija T, Validžić IL, Lojpur V. Study of iodine (n) and tin (p) doped Sb2S3 nanoparticles by detail X-ray photoelectron spectroscopy. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:68.
https://hdl.handle.net/21.15107/rcub_vinar_10810 .

Stamenković, Tijana, Rakočević, Lazar, Barudžija, Tanja, Validžić, Ivana Lj., Lojpur, Vesna, "Study of iodine (n) and tin (p) doped Sb2S3 nanoparticles by detail X-ray photoelectron spectroscopy" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):68,
https://hdl.handle.net/21.15107/rcub_vinar_10810 .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Srejić, Irina
AU  - Maksić, Aleksandar
AU  - Golubović, Jelena
AU  - Štrbac, Svetlana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9626
AB  - Hydrogen evolution reaction (HER) was investigated on reduced graphene oxide (rGO)-supported Au and PdAu nanoparticles in acid solution. The graphene spread over glassy carbon (rGO/GC) was used as a support for the spontaneous deposition of Au and Pd. The resulting Au/rGO and PdAu/rGO electrodes were characterized using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) techniques. Phase AFM images have shown that the edges of the rGO sheets were active sites for the deposition of both Au and Pd. XPS analysis revealed that the atomic percentages of both Au and PdAu nanoparticles were slightly higher than 1%. The activity of the PdAu/rGO electrode for the HER was remarkably high, with the overpotential close to zero. HER activity was stable over a 3 h testing time, with a low Tafel slope of approx. −46 mV/dec achieved after prolonged hydrogen evolution at a constant potential.
T2  - Catalysts
T1  - Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles
VL  - 11
IS  - 4
SP  - 481
DO  - 10.3390/catal11040481
ER  - 

@article{
author = "Rakočević, Lazar and Srejić, Irina and Maksić, Aleksandar and Golubović, Jelena and Štrbac, Svetlana",
year = "2021",
abstract = "Hydrogen evolution reaction (HER) was investigated on reduced graphene oxide (rGO)-supported Au and PdAu nanoparticles in acid solution. The graphene spread over glassy carbon (rGO/GC) was used as a support for the spontaneous deposition of Au and Pd. The resulting Au/rGO and PdAu/rGO electrodes were characterized using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) techniques. Phase AFM images have shown that the edges of the rGO sheets were active sites for the deposition of both Au and Pd. XPS analysis revealed that the atomic percentages of both Au and PdAu nanoparticles were slightly higher than 1%. The activity of the PdAu/rGO electrode for the HER was remarkably high, with the overpotential close to zero. HER activity was stable over a 3 h testing time, with a low Tafel slope of approx. −46 mV/dec achieved after prolonged hydrogen evolution at a constant potential.",
journal = "Catalysts",
title = "Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles",
volume = "11",
number = "4",
pages = "481",
doi = "10.3390/catal11040481"
}

Rakočević, L., Srejić, I., Maksić, A., Golubović, J.,& Štrbac, S.. (2021). Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles. in Catalysts, 11(4), 481.
https://doi.org/10.3390/catal11040481

Rakočević L, Srejić I, Maksić A, Golubović J, Štrbac S. Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles. in Catalysts. 2021;11(4):481.
doi:10.3390/catal11040481 .

Rakočević, Lazar, Srejić, Irina, Maksić, Aleksandar, Golubović, Jelena, Štrbac, Svetlana, "Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles" in Catalysts, 11, no. 4 (2021):481,
https://doi.org/10.3390/catal11040481 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Srejić, Irina
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9544
AB  - HER was examined on various glassy carbon-supported Au and PdAu electrodes in acid solution. The Au/GC electrodes were obtained after Au was electrodeposited on a GC substrate by holding the potential for various times in 0.5 M H2SO4 solution containing AuCl4− ions. PdAu/GC electrodes were obtained after Pd has been added by a spontaneous deposition on previously prepared Au/GC electrodes. Surface morphology and chemical analysis of Au/GC and PdAu/GC electrodes were performed by atomic force microscopy and X-ray photoemission spectroscopy. Electrochemical characterization was performed by cyclic voltammetry in 0.5 M H2SO4 solution, while the linear sweep voltammetry was used to gain insight into the electrocatalytic activity of these electrodes for HER. 30minPd/10minAu/GC electrode consisting of 48% Pd and 65% Au, with the total coverage of the GC substrate with PdAu islands of 70%, showed the best catalytic activity for HER. A remarkable high activity and stability of this electrode makes it a promising catalyst for HER in acid solution. © 2021 Hydrogen Energy Publications LLC
T2  - International Journal of Hydrogen Energy
T1  - Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study
VL  - 46
IS  - 13
SP  - 9052
EP  - 9063
DO  - 10.1016/j.ijhydene.2021.01.001
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Srejić, Irina",
year = "2021",
abstract = "HER was examined on various glassy carbon-supported Au and PdAu electrodes in acid solution. The Au/GC electrodes were obtained after Au was electrodeposited on a GC substrate by holding the potential for various times in 0.5 M H2SO4 solution containing AuCl4− ions. PdAu/GC electrodes were obtained after Pd has been added by a spontaneous deposition on previously prepared Au/GC electrodes. Surface morphology and chemical analysis of Au/GC and PdAu/GC electrodes were performed by atomic force microscopy and X-ray photoemission spectroscopy. Electrochemical characterization was performed by cyclic voltammetry in 0.5 M H2SO4 solution, while the linear sweep voltammetry was used to gain insight into the electrocatalytic activity of these electrodes for HER. 30minPd/10minAu/GC electrode consisting of 48% Pd and 65% Au, with the total coverage of the GC substrate with PdAu islands of 70%, showed the best catalytic activity for HER. A remarkable high activity and stability of this electrode makes it a promising catalyst for HER in acid solution. © 2021 Hydrogen Energy Publications LLC",
journal = "International Journal of Hydrogen Energy",
title = "Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study",
volume = "46",
number = "13",
pages = "9052-9063",
doi = "10.1016/j.ijhydene.2021.01.001"
}

Rakočević, L., Štrbac, S.,& Srejić, I.. (2021). Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study. in International Journal of Hydrogen Energy, 46(13), 9052-9063.
https://doi.org/10.1016/j.ijhydene.2021.01.001

Rakočević L, Štrbac S, Srejić I. Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study. in International Journal of Hydrogen Energy. 2021;46(13):9052-9063.
doi:10.1016/j.ijhydene.2021.01.001 .

Rakočević, Lazar, Štrbac, Svetlana, Srejić, Irina, "Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study" in International Journal of Hydrogen Energy, 46, no. 13 (2021):9052-9063,
https://doi.org/10.1016/j.ijhydene.2021.01.001 . .

TY  - CONF
AU  - Rakočević, Lazar
AU  - Novaković, Mirjana M.
AU  - Potočnik, Jelena
AU  - Jugović, Dragana
AU  - Stojković-Simatović, Ivana
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8734
AB  - Due to the increasing use of batteries in everyday life and in industry, there is a need for developing cheaper batteries than the widely used lithium ion batteries. Lower price and higher abundance of sodium compared to lithium mineral resources intensified the development of Na-ion batteries. Aqueous lithium/ sodium rechargeable batteries have attracted considerable attention for energy storage because they do not contain flammable organic electrolytes as commercial batteries do, the ionic conductivity of the aqueous electrolyte is about two orders of magnitude higher than in non-aqueous electrolyte and the electrolyte salt and solvent are cheaper. Various materials such as manganese oxides, vanadium oxide and phosphates have been used as electrode materials (cathodic and anodic) in sodium batteries due to high sodium intercalation ability in both, organic and aqueous electrolytes. The most frequently used type of manganese oxides are Li–Mn–O or Na–Mn–O systems due to their tunnel or layered crystal structures which facilitate the lithium/sodium intercalation-deintercalation. In this work, a glycine-nitrate method (GNM) was applied for the synthesis of cathode material Na0.4MnO2.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device
SP  - 154
EP  - 156
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8734
ER  - 

@conference{
author = "Rakočević, Lazar and Novaković, Mirjana M. and Potočnik, Jelena and Jugović, Dragana and Stojković-Simatović, Ivana",
year = "2018",
abstract = "Due to the increasing use of batteries in everyday life and in industry, there is a need for developing cheaper batteries than the widely used lithium ion batteries. Lower price and higher abundance of sodium compared to lithium mineral resources intensified the development of Na-ion batteries. Aqueous lithium/ sodium rechargeable batteries have attracted considerable attention for energy storage because they do not contain flammable organic electrolytes as commercial batteries do, the ionic conductivity of the aqueous electrolyte is about two orders of magnitude higher than in non-aqueous electrolyte and the electrolyte salt and solvent are cheaper. Various materials such as manganese oxides, vanadium oxide and phosphates have been used as electrode materials (cathodic and anodic) in sodium batteries due to high sodium intercalation ability in both, organic and aqueous electrolytes. The most frequently used type of manganese oxides are Li–Mn–O or Na–Mn–O systems due to their tunnel or layered crystal structures which facilitate the lithium/sodium intercalation-deintercalation. In this work, a glycine-nitrate method (GNM) was applied for the synthesis of cathode material Na0.4MnO2.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device",
pages = "154-156",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8734"
}

Rakočević, L., Novaković, M. M., Potočnik, J., Jugović, D.,& Stojković-Simatović, I.. (2018). Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 154-156.
https://hdl.handle.net/21.15107/rcub_vinar_8734

Rakočević L, Novaković MM, Potočnik J, Jugović D, Stojković-Simatović I. Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:154-156.
https://hdl.handle.net/21.15107/rcub_vinar_8734 .

Rakočević, Lazar, Novaković, Mirjana M., Potočnik, Jelena, Jugović, Dragana, Stojković-Simatović, Ivana, "Synthesis and Characterization of Na0.4MnO2 as a Positive Electrode Material for an Aqueous Electrolyte Sodium-ion Energy Storage Device" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):154-156,
https://hdl.handle.net/21.15107/rcub_vinar_8734 .