Serbian Academy of Sciences and Arts [F-141]

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Serbian Academy of Sciences and Arts [F-141]

Authors

Publications

Core–shell carbon fiber@Co1.5Mn1.5O4 mesoporous spinel electrode for high performance symmetrical supercapacitors

Mijailović, Daniel; Radmilović, Vuk; Lačnjevac, Uroš; Stojanović, Dušica; Jović, Vladimir D.; Radmilović, Velimir R.; Uskoković, Petar

(Elsevier B.V., 2020)

TY  - JOUR
AU  - Mijailović, Daniel
AU  - Radmilović, Vuk
AU  - Lačnjevac, Uroš
AU  - Stojanović, Dušica
AU  - Jović, Vladimir D.
AU  - Radmilović, Velimir R.
AU  - Uskoković, Petar
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4434
AB  - We report a mesoporous composite system consisting of carbon fiber cores surrounded with Co1.5Mn1.5O4 spinel nanocrystal shells, synthesized by a simple two-step process involving single-nozzle co-electrospinning and subsequent calcination. Benefiting from the obtained core-shell structure, this composite has exhibited high specific capacitance in the two-electrode configuration, up to 384 F g(-1) at 0.28 A g(-1), with no capacitance loss after 2000 cycles at 50 mV s(-1). The incorporation of spinel nanocrystals improved the capacitive performances of composite fibers due to a synergistic effect of redox-active shells and the conductive cores, making this novel material promising for symmetrical supercapacitors.
PB  - Elsevier B.V.
T2  - Applied Surface Science
T1  - Core–shell carbon fiber@Co1.5Mn1.5O4 mesoporous spinel electrode for high performance symmetrical supercapacitors
SP  - 147678
VL  - 534
DO  - 10.1016/j.apsusc.2020.147678
ER  - 
@article{
author = "Mijailović, Daniel and Radmilović, Vuk and Lačnjevac, Uroš and Stojanović, Dušica and Jović, Vladimir D. and Radmilović, Velimir R. and Uskoković, Petar",
year = "2020",
abstract = "We report a mesoporous composite system consisting of carbon fiber cores surrounded with Co1.5Mn1.5O4 spinel nanocrystal shells, synthesized by a simple two-step process involving single-nozzle co-electrospinning and subsequent calcination. Benefiting from the obtained core-shell structure, this composite has exhibited high specific capacitance in the two-electrode configuration, up to 384 F g(-1) at 0.28 A g(-1), with no capacitance loss after 2000 cycles at 50 mV s(-1). The incorporation of spinel nanocrystals improved the capacitive performances of composite fibers due to a synergistic effect of redox-active shells and the conductive cores, making this novel material promising for symmetrical supercapacitors.",
publisher = "Elsevier B.V.",
journal = "Applied Surface Science",
title = "Core–shell carbon fiber@Co1.5Mn1.5O4 mesoporous spinel electrode for high performance symmetrical supercapacitors",
pages = "147678",
volume = "534",
doi = "10.1016/j.apsusc.2020.147678"
}
Mijailović, D., Radmilović, V., Lačnjevac, U., Stojanović, D., Jović, V. D., Radmilović, V. R.,& Uskoković, P.. (2020). Core–shell carbon fiber@Co1.5Mn1.5O4 mesoporous spinel electrode for high performance symmetrical supercapacitors. in Applied Surface Science
Elsevier B.V.., 534, 147678.
https://doi.org/10.1016/j.apsusc.2020.147678
Mijailović D, Radmilović V, Lačnjevac U, Stojanović D, Jović VD, Radmilović VR, Uskoković P. Core–shell carbon fiber@Co1.5Mn1.5O4 mesoporous spinel electrode for high performance symmetrical supercapacitors. in Applied Surface Science. 2020;534:147678.
doi:10.1016/j.apsusc.2020.147678 .
Mijailović, Daniel, Radmilović, Vuk, Lačnjevac, Uroš, Stojanović, Dušica, Jović, Vladimir D., Radmilović, Velimir R., Uskoković, Petar, "Core–shell carbon fiber@Co1.5Mn1.5O4 mesoporous spinel electrode for high performance symmetrical supercapacitors" in Applied Surface Science, 534 (2020):147678,
https://doi.org/10.1016/j.apsusc.2020.147678 . .
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10

Adsorption kinetics, equilibrium, and thermodynamics of Cu2+ on pristine and alkali activated steel slag

Nikolić, Irena; Đurović, Dijana; Tadić, Milena; Radmilović, Vuk; Radmilović, Velimir R.

(Taylor & Francis Inc, Philadelphia, 2020)

TY  - JOUR
AU  - Nikolić, Irena
AU  - Đurović, Dijana
AU  - Tadić, Milena
AU  - Radmilović, Vuk
AU  - Radmilović, Velimir R.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4356
AB  - Two adsorbents, pristine electric arc furnace slag (EAFS) and alkali activated slag (AAS) were used for Cu2+ removal from aquatic solutions. Batch adsorption tests were conducted at various temperatures and initial Cu2+ concentrations, while solid to liquid ratio and pH of solution were kept constant. Pseudo-first-order and pseudo-second-order (PSO) kinetics models, Langmuir and Freundlich isotherm models, as well as intraparticle and Boyd's diffusion models were applied in order to investigate the adsorption process. It has been found that alkali activation of EAFS leads to an increase in the specific surface of slag and thus improves the sorption properties of EAFS. The adsorption of Cu2+ onto both adsorbents proceeds via PSO adsorption mechanism, film diffusion mainly controls the adsorption process, and Langmuir isotherm model fits well the experimental data. Results indicated a fast adsorption process which is spontaneous and endothermic in nature. Microstructural investigation of EAFS and AAS revealed morphological changes in metal loaded EAFS and AAS samples in comparison to unloaded adsorbents. X-ray powder diffraction analysis indicated that adsorption of Cu2+ onto both adsorbents occurs through formation of a Cu-complex.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Chemical Engineering Communications
T1  - Adsorption kinetics, equilibrium, and thermodynamics of Cu2+ on pristine and alkali activated steel slag
EP  - 1297
IS  - 9
SP  - 1278
VL  - 207
DO  - 10.1080/00986445.2019.1685986
ER  - 
@article{
author = "Nikolić, Irena and Đurović, Dijana and Tadić, Milena and Radmilović, Vuk and Radmilović, Velimir R.",
year = "2020",
abstract = "Two adsorbents, pristine electric arc furnace slag (EAFS) and alkali activated slag (AAS) were used for Cu2+ removal from aquatic solutions. Batch adsorption tests were conducted at various temperatures and initial Cu2+ concentrations, while solid to liquid ratio and pH of solution were kept constant. Pseudo-first-order and pseudo-second-order (PSO) kinetics models, Langmuir and Freundlich isotherm models, as well as intraparticle and Boyd's diffusion models were applied in order to investigate the adsorption process. It has been found that alkali activation of EAFS leads to an increase in the specific surface of slag and thus improves the sorption properties of EAFS. The adsorption of Cu2+ onto both adsorbents proceeds via PSO adsorption mechanism, film diffusion mainly controls the adsorption process, and Langmuir isotherm model fits well the experimental data. Results indicated a fast adsorption process which is spontaneous and endothermic in nature. Microstructural investigation of EAFS and AAS revealed morphological changes in metal loaded EAFS and AAS samples in comparison to unloaded adsorbents. X-ray powder diffraction analysis indicated that adsorption of Cu2+ onto both adsorbents occurs through formation of a Cu-complex.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Chemical Engineering Communications",
title = "Adsorption kinetics, equilibrium, and thermodynamics of Cu2+ on pristine and alkali activated steel slag",
pages = "1297-1278",
number = "9",
volume = "207",
doi = "10.1080/00986445.2019.1685986"
}
Nikolić, I., Đurović, D., Tadić, M., Radmilović, V.,& Radmilović, V. R.. (2020). Adsorption kinetics, equilibrium, and thermodynamics of Cu2+ on pristine and alkali activated steel slag. in Chemical Engineering Communications
Taylor & Francis Inc, Philadelphia., 207(9), 1278-1297.
https://doi.org/10.1080/00986445.2019.1685986
Nikolić I, Đurović D, Tadić M, Radmilović V, Radmilović VR. Adsorption kinetics, equilibrium, and thermodynamics of Cu2+ on pristine and alkali activated steel slag. in Chemical Engineering Communications. 2020;207(9):1278-1297.
doi:10.1080/00986445.2019.1685986 .
Nikolić, Irena, Đurović, Dijana, Tadić, Milena, Radmilović, Vuk, Radmilović, Velimir R., "Adsorption kinetics, equilibrium, and thermodynamics of Cu2+ on pristine and alkali activated steel slag" in Chemical Engineering Communications, 207, no. 9 (2020):1278-1297,
https://doi.org/10.1080/00986445.2019.1685986 . .
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Highly Active Rutile TiO2 Nanocrystalline Photocatalysts

Đokić, Veljko; Marinković, Aleksandar; Petrović, Rada; Ersen, Ovidiu; Zafeiratos, Spyridon; Mitrić, Miodrag; Ophus, Colin; Radmilović, Velimir R.; Janaćković, Đorđe

(Amer Chemical Soc, Washington, 2020)

TY  - JOUR
AU  - Đokić, Veljko
AU  - Marinković, Aleksandar
AU  - Petrović, Rada
AU  - Ersen, Ovidiu
AU  - Zafeiratos, Spyridon
AU  - Mitrić, Miodrag
AU  - Ophus, Colin
AU  - Radmilović, Velimir R.
AU  - Janaćković, Đorđe
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4470
AB  - The controllable synthesis of rutile TiO2 single crystal particles with the preferential orientation of {111} facets still remains a scientific and technological challenge. Here, we developed a facile route for fabrication of rutile TiO2 nanorod crystals (RTiO(2)NRs) having high ratios of oxidative {111} to reductive {110} surfaces. RTiO(2)NRs were synthesized using a peroxo-titanium complex (PTC) approach, which was controlled by changing the Ti/H2O2 ratio. The thus obtained RTiO(2)NRs revealed a high tendency to agglomerate through orientation-dependent attachment along the {110} facets. This resulted in an increased {111}/{110} surface ratio and led to a markedly improved photocatalytic activity of RTiO2NR aggregates. The reported findings illustrate the rich potential of the herein proposed facile and energy-efficient synthesis of nanostructured rutile TiO2-based photocatalysts.
PB  - Amer Chemical Soc, Washington
T2  - ACS Applied Materials & Interfaces
T1  - Highly Active Rutile TiO2 Nanocrystalline Photocatalysts
EP  - 33068
IS  - 29
SP  - 33058
VL  - 12
DO  - 10.1021/acsami.0c03150
ER  - 
@article{
author = "Đokić, Veljko and Marinković, Aleksandar and Petrović, Rada and Ersen, Ovidiu and Zafeiratos, Spyridon and Mitrić, Miodrag and Ophus, Colin and Radmilović, Velimir R. and Janaćković, Đorđe",
year = "2020",
abstract = "The controllable synthesis of rutile TiO2 single crystal particles with the preferential orientation of {111} facets still remains a scientific and technological challenge. Here, we developed a facile route for fabrication of rutile TiO2 nanorod crystals (RTiO(2)NRs) having high ratios of oxidative {111} to reductive {110} surfaces. RTiO(2)NRs were synthesized using a peroxo-titanium complex (PTC) approach, which was controlled by changing the Ti/H2O2 ratio. The thus obtained RTiO(2)NRs revealed a high tendency to agglomerate through orientation-dependent attachment along the {110} facets. This resulted in an increased {111}/{110} surface ratio and led to a markedly improved photocatalytic activity of RTiO2NR aggregates. The reported findings illustrate the rich potential of the herein proposed facile and energy-efficient synthesis of nanostructured rutile TiO2-based photocatalysts.",
publisher = "Amer Chemical Soc, Washington",
journal = "ACS Applied Materials & Interfaces",
title = "Highly Active Rutile TiO2 Nanocrystalline Photocatalysts",
pages = "33068-33058",
number = "29",
volume = "12",
doi = "10.1021/acsami.0c03150"
}
Đokić, V., Marinković, A., Petrović, R., Ersen, O., Zafeiratos, S., Mitrić, M., Ophus, C., Radmilović, V. R.,& Janaćković, Đ.. (2020). Highly Active Rutile TiO2 Nanocrystalline Photocatalysts. in ACS Applied Materials & Interfaces
Amer Chemical Soc, Washington., 12(29), 33058-33068.
https://doi.org/10.1021/acsami.0c03150
Đokić V, Marinković A, Petrović R, Ersen O, Zafeiratos S, Mitrić M, Ophus C, Radmilović VR, Janaćković Đ. Highly Active Rutile TiO2 Nanocrystalline Photocatalysts. in ACS Applied Materials & Interfaces. 2020;12(29):33058-33068.
doi:10.1021/acsami.0c03150 .
Đokić, Veljko, Marinković, Aleksandar, Petrović, Rada, Ersen, Ovidiu, Zafeiratos, Spyridon, Mitrić, Miodrag, Ophus, Colin, Radmilović, Velimir R., Janaćković, Đorđe, "Highly Active Rutile TiO2 Nanocrystalline Photocatalysts" in ACS Applied Materials & Interfaces, 12, no. 29 (2020):33058-33068,
https://doi.org/10.1021/acsami.0c03150 . .
1
53
14
40

Defect formation during synthesis and welding of silver nanowires for solar cell applications

Radmilović, Vuk; Radmilović, Velimir R.

(Savez inženjera metalurgije Srbije, Beograd, 2019)

TY  - JOUR
AU  - Radmilović, Vuk
AU  - Radmilović, Velimir R.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4058
AB  - Structural defects such as stacking faults and twins, observed in many face-centered cubic (FCC) structured metals and alloys with low stacking fault energies, in general, play an important role in microstructure evolution, and in particular, in nucleation and crystal growth, morphology development, and phase transformations during synthesis as well as post-synthesis processes.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Defect formation during synthesis and welding of silver nanowires for solar cell applications
EP  - 299
IS  - 4
SP  - 287
VL  - 25
DO  - 10.30544/452
ER  - 
@article{
author = "Radmilović, Vuk and Radmilović, Velimir R.",
year = "2019",
abstract = "Structural defects such as stacking faults and twins, observed in many face-centered cubic (FCC) structured metals and alloys with low stacking fault energies, in general, play an important role in microstructure evolution, and in particular, in nucleation and crystal growth, morphology development, and phase transformations during synthesis as well as post-synthesis processes.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Defect formation during synthesis and welding of silver nanowires for solar cell applications",
pages = "299-287",
number = "4",
volume = "25",
doi = "10.30544/452"
}
Radmilović, V.,& Radmilović, V. R.. (2019). Defect formation during synthesis and welding of silver nanowires for solar cell applications. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 25(4), 287-299.
https://doi.org/10.30544/452
Radmilović V, Radmilović VR. Defect formation during synthesis and welding of silver nanowires for solar cell applications. in Metallurgical & Materials Engineering. 2019;25(4):287-299.
doi:10.30544/452 .
Radmilović, Vuk, Radmilović, Velimir R., "Defect formation during synthesis and welding of silver nanowires for solar cell applications" in Metallurgical & Materials Engineering, 25, no. 4 (2019):287-299,
https://doi.org/10.30544/452 . .
2
2

Assembling Mesoscale-Structured Organic Interfaces in Perovskite Photovoltaics

Hou, Yi; Xie, Chen; Radmilović, Vuk; Puscher, Bianka; Wu, Mingjian; Heumueller, Thomas; Karl, Andre; Li, Ning; Tang, Xiaofeng; Meng, Wei; Chen, Shi; Osvet, Andres; Guldi, Dirk; Spiecker, Erdmann; Radmilović, Velimir R.; Brabec, Christoph J.

(Wiley-VCH Verlag Gmbh, Weinheim, 2019)

TY  - JOUR
AU  - Hou, Yi
AU  - Xie, Chen
AU  - Radmilović, Vuk
AU  - Puscher, Bianka
AU  - Wu, Mingjian
AU  - Heumueller, Thomas
AU  - Karl, Andre
AU  - Li, Ning
AU  - Tang, Xiaofeng
AU  - Meng, Wei
AU  - Chen, Shi
AU  - Osvet, Andres
AU  - Guldi, Dirk
AU  - Spiecker, Erdmann
AU  - Radmilović, Velimir R.
AU  - Brabec, Christoph J.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4184
AB  - Mesoscale-structured materials offer broad opportunities in extremely diverse applications owing to their high surface areas, tunable surface energy, and large pore volume. These benefits may improve the performance of materials in terms of carrier density, charge transport, and stability. Although metal oxides-based mesoscale-structured materials, such as TiO2, predominantly hold the record efficiency in perovskite solar cells, high temperatures (above 400 degrees C) and limited materials choices still challenge the community. A novel route to fabricate organic-based mesoscale-structured interfaces (OMI) for perovskite solar cells using a low-temperature and green solvent-based process is presented here. The efficient infiltration of organic porous structures based on crystalline nanoparticles allows engineering efficient "n-i-p" and "p-i-n" perovskite solar cells with enhanced thermal stability, good performance, and excellent lateral homogeneity. The results show that this method is universal for multiple organic electronic materials, which opens the door to transform a wide variety of organic-based semiconductors into scalable n- or p-type porous interfaces for diverse advanced applications.
PB  - Wiley-VCH Verlag Gmbh, Weinheim
T2  - Advanced Materials
T1  - Assembling Mesoscale-Structured Organic Interfaces in Perovskite Photovoltaics
IS  - 8
VL  - 31
DO  - 10.1002/adma.201806516
ER  - 
@article{
author = "Hou, Yi and Xie, Chen and Radmilović, Vuk and Puscher, Bianka and Wu, Mingjian and Heumueller, Thomas and Karl, Andre and Li, Ning and Tang, Xiaofeng and Meng, Wei and Chen, Shi and Osvet, Andres and Guldi, Dirk and Spiecker, Erdmann and Radmilović, Velimir R. and Brabec, Christoph J.",
year = "2019",
abstract = "Mesoscale-structured materials offer broad opportunities in extremely diverse applications owing to their high surface areas, tunable surface energy, and large pore volume. These benefits may improve the performance of materials in terms of carrier density, charge transport, and stability. Although metal oxides-based mesoscale-structured materials, such as TiO2, predominantly hold the record efficiency in perovskite solar cells, high temperatures (above 400 degrees C) and limited materials choices still challenge the community. A novel route to fabricate organic-based mesoscale-structured interfaces (OMI) for perovskite solar cells using a low-temperature and green solvent-based process is presented here. The efficient infiltration of organic porous structures based on crystalline nanoparticles allows engineering efficient "n-i-p" and "p-i-n" perovskite solar cells with enhanced thermal stability, good performance, and excellent lateral homogeneity. The results show that this method is universal for multiple organic electronic materials, which opens the door to transform a wide variety of organic-based semiconductors into scalable n- or p-type porous interfaces for diverse advanced applications.",
publisher = "Wiley-VCH Verlag Gmbh, Weinheim",
journal = "Advanced Materials",
title = "Assembling Mesoscale-Structured Organic Interfaces in Perovskite Photovoltaics",
number = "8",
volume = "31",
doi = "10.1002/adma.201806516"
}
Hou, Y., Xie, C., Radmilović, V., Puscher, B., Wu, M., Heumueller, T., Karl, A., Li, N., Tang, X., Meng, W., Chen, S., Osvet, A., Guldi, D., Spiecker, E., Radmilović, V. R.,& Brabec, C. J.. (2019). Assembling Mesoscale-Structured Organic Interfaces in Perovskite Photovoltaics. in Advanced Materials
Wiley-VCH Verlag Gmbh, Weinheim., 31(8).
https://doi.org/10.1002/adma.201806516
Hou Y, Xie C, Radmilović V, Puscher B, Wu M, Heumueller T, Karl A, Li N, Tang X, Meng W, Chen S, Osvet A, Guldi D, Spiecker E, Radmilović VR, Brabec CJ. Assembling Mesoscale-Structured Organic Interfaces in Perovskite Photovoltaics. in Advanced Materials. 2019;31(8).
doi:10.1002/adma.201806516 .
Hou, Yi, Xie, Chen, Radmilović, Vuk, Puscher, Bianka, Wu, Mingjian, Heumueller, Thomas, Karl, Andre, Li, Ning, Tang, Xiaofeng, Meng, Wei, Chen, Shi, Osvet, Andres, Guldi, Dirk, Spiecker, Erdmann, Radmilović, Velimir R., Brabec, Christoph J., "Assembling Mesoscale-Structured Organic Interfaces in Perovskite Photovoltaics" in Advanced Materials, 31, no. 8 (2019),
https://doi.org/10.1002/adma.201806516 . .
1
18
11
17

Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method

Krstajić-Pajić, Mila; Stevanović, Sanja; Radmilović, Vuk; Gavrilović-Wohlmuther, Aleksandra; Zabinski, Piotr; Elezović, Nevenka R.; Radmilović, Velimir R.; Gojković, Snežana Lj.; Jovanović, Vladislava M.

(Elsevier Science Bv, Amsterdam, 2019)

TY  - JOUR
AU  - Krstajić-Pajić, Mila
AU  - Stevanović, Sanja
AU  - Radmilović, Vuk
AU  - Gavrilović-Wohlmuther, Aleksandra
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka R.
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana Lj.
AU  - Jovanović, Vladislava M.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4330
AB  - Low loading PtAu nanoparticles supported on high area carbon were synthesized by water-in-oil microemulsion method and examined for formic acid and methanol oxidation. Prepared catalyst powder was characterized by Xray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). These techniques revealed that the catalyst contains rather agglomerated quasi-spherical particles, similar to 4 nm diameter, composed of a solid solution of Pt and Au with only similar to 4 at% of Au. In spite of such low Au content, both onset and peak potentials for CO oxidation are shifted some 150 mV to more positive values in comparison to Pt synthesized in the same manner due to stronger binding of CO as a result of notable electronic effect. It is important that this small quantity of Au also significantly influences oxidation of formic acid promoting direct path and suppressing indirect path in formic acid oxidation in a degree as expected by a much larger quantity of Au. Such improvement could be due exclusively by ensemble effect of high number of small Pt domains which formation could be possible only by very fine dispersion of such low Au quantity. High number of small Pt domains is corroborated by lower activity for methanol oxidation in comparison to Pt catalyst synthesized by the same procedure. These results emphasize the importance of the Au dispersion on the surface of Pt over its quantity in PtAu catalyst with regards to both, the ensemble and the electronic effects.
PB  - Elsevier Science Bv, Amsterdam
T2  - Applied Catalysis B-Environmental
T1  - Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method
EP  - 593
SP  - 585
VL  - 243
DO  - 10.1016/j.apcatb.2018.10.064
ER  - 
@article{
author = "Krstajić-Pajić, Mila and Stevanović, Sanja and Radmilović, Vuk and Gavrilović-Wohlmuther, Aleksandra and Zabinski, Piotr and Elezović, Nevenka R. and Radmilović, Velimir R. and Gojković, Snežana Lj. and Jovanović, Vladislava M.",
year = "2019",
abstract = "Low loading PtAu nanoparticles supported on high area carbon were synthesized by water-in-oil microemulsion method and examined for formic acid and methanol oxidation. Prepared catalyst powder was characterized by Xray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). These techniques revealed that the catalyst contains rather agglomerated quasi-spherical particles, similar to 4 nm diameter, composed of a solid solution of Pt and Au with only similar to 4 at% of Au. In spite of such low Au content, both onset and peak potentials for CO oxidation are shifted some 150 mV to more positive values in comparison to Pt synthesized in the same manner due to stronger binding of CO as a result of notable electronic effect. It is important that this small quantity of Au also significantly influences oxidation of formic acid promoting direct path and suppressing indirect path in formic acid oxidation in a degree as expected by a much larger quantity of Au. Such improvement could be due exclusively by ensemble effect of high number of small Pt domains which formation could be possible only by very fine dispersion of such low Au quantity. High number of small Pt domains is corroborated by lower activity for methanol oxidation in comparison to Pt catalyst synthesized by the same procedure. These results emphasize the importance of the Au dispersion on the surface of Pt over its quantity in PtAu catalyst with regards to both, the ensemble and the electronic effects.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Catalysis B-Environmental",
title = "Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method",
pages = "593-585",
volume = "243",
doi = "10.1016/j.apcatb.2018.10.064"
}
Krstajić-Pajić, M., Stevanović, S., Radmilović, V., Gavrilović-Wohlmuther, A., Zabinski, P., Elezović, N. R., Radmilović, V. R., Gojković, S. Lj.,& Jovanović, V. M.. (2019). Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method. in Applied Catalysis B-Environmental
Elsevier Science Bv, Amsterdam., 243, 585-593.
https://doi.org/10.1016/j.apcatb.2018.10.064
Krstajić-Pajić M, Stevanović S, Radmilović V, Gavrilović-Wohlmuther A, Zabinski P, Elezović NR, Radmilović VR, Gojković SL, Jovanović VM. Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method. in Applied Catalysis B-Environmental. 2019;243:585-593.
doi:10.1016/j.apcatb.2018.10.064 .
Krstajić-Pajić, Mila, Stevanović, Sanja, Radmilović, Vuk, Gavrilović-Wohlmuther, Aleksandra, Zabinski, Piotr, Elezović, Nevenka R., Radmilović, Velimir R., Gojković, Snežana Lj., Jovanović, Vladislava M., "Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method" in Applied Catalysis B-Environmental, 243 (2019):585-593,
https://doi.org/10.1016/j.apcatb.2018.10.064 . .
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39

Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag

Nikolić, Irena; Marković, Smilja; Veselinović, Ljiljana; Radmilović, Vuk; Janković-Častvan, Ivona; Radmilović, Velimir R.

(Elsevier Science Bv, Amsterdam, 2019)

TY  - JOUR
AU  - Nikolić, Irena
AU  - Marković, Smilja
AU  - Veselinović, Ljiljana
AU  - Radmilović, Vuk
AU  - Janković-Častvan, Ivona
AU  - Radmilović, Velimir R.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4339
AB  - Pristine electric arc furnace slag (EAFS) as well as EAFS modified by alkali activation i.e. alkali activated slag (AAS) have found a novel application as adsorbents used in Cu2+ removal from sulfate solutions. The adsorption tests were carried in batch conditions and results have shown that alkali activation of EAFS enhances the Cu2+ adsorption. The adsorption process was found to follow a pseudo second-order kinetic model and occurs via formation of posnjakite (Cu-4(SO4)(OH)(6)center dot H2O) on the surface of both, EAFS and AAS. Enhanced adsorption properties of AAS, compared to EAFS, are attributed to a more porous structure, larger specific surface area and an increased number of surface groups involved in the binding of Cu2+.
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Letters
T1  - Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag
EP  - 188
SP  - 184
VL  - 235
DO  - 10.1016/j.matlet.2018.10.027
ER  - 
@article{
author = "Nikolić, Irena and Marković, Smilja and Veselinović, Ljiljana and Radmilović, Vuk and Janković-Častvan, Ivona and Radmilović, Velimir R.",
year = "2019",
abstract = "Pristine electric arc furnace slag (EAFS) as well as EAFS modified by alkali activation i.e. alkali activated slag (AAS) have found a novel application as adsorbents used in Cu2+ removal from sulfate solutions. The adsorption tests were carried in batch conditions and results have shown that alkali activation of EAFS enhances the Cu2+ adsorption. The adsorption process was found to follow a pseudo second-order kinetic model and occurs via formation of posnjakite (Cu-4(SO4)(OH)(6)center dot H2O) on the surface of both, EAFS and AAS. Enhanced adsorption properties of AAS, compared to EAFS, are attributed to a more porous structure, larger specific surface area and an increased number of surface groups involved in the binding of Cu2+.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Letters",
title = "Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag",
pages = "188-184",
volume = "235",
doi = "10.1016/j.matlet.2018.10.027"
}
Nikolić, I., Marković, S., Veselinović, L., Radmilović, V., Janković-Častvan, I.,& Radmilović, V. R.. (2019). Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag. in Materials Letters
Elsevier Science Bv, Amsterdam., 235, 184-188.
https://doi.org/10.1016/j.matlet.2018.10.027
Nikolić I, Marković S, Veselinović L, Radmilović V, Janković-Častvan I, Radmilović VR. Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag. in Materials Letters. 2019;235:184-188.
doi:10.1016/j.matlet.2018.10.027 .
Nikolić, Irena, Marković, Smilja, Veselinović, Ljiljana, Radmilović, Vuk, Janković-Častvan, Ivona, Radmilović, Velimir R., "Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag" in Materials Letters, 235 (2019):184-188,
https://doi.org/10.1016/j.matlet.2018.10.027 . .
1
1
2

Structure and Properties of Polymer Nanocomposite Films With Carbon Nanotubes and Graphene

Radmilović, Vuk; Carraro, Carlo; Uskoković, Petar; Radmilović, Velimir R.

(Wiley, Hoboken, 2017)

TY  - JOUR
AU  - Radmilović, Vuk
AU  - Carraro, Carlo
AU  - Uskoković, Petar
AU  - Radmilović, Velimir R.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3551
AB  - In this report, we demonstrate a simple fabrication route for polyvinyl butyral (PVB)-based nanocomposites with carbon nanotubes and graphene. In spite of insufficient percolation threshold due to low concentration of carbonaceous nanofillers, in the amount of 1 wt%, significant improvement of electrical and mechanical properties with negligible deterioration of optical properties for the polymer PVB matrix can be achieved. Both hardness and modulus increase and electrical resistivity and transmittance decrease in this order: PVB + multi-wall carbon nanotubes (MWCNT) double right arrow PVB+single-wall carbon nanotubes (SWCNT) double right arrow PVB + graphene. The largest values of reduced modulus and hardness are observed for the PVB + graphene nanocomposite, obtained by nanoindentation. Transmittance is similar to 84%, 86%, 89%, and 91% at 370 nm, and at 550 nm is similar to 84%, 88%, 90%, and 92%, for PVB + graphene, PVB+MWCNT, PVB + SWCNT, and pure PVB, respectively. The highest resistivity of 4 x 10(4) Omega cm is exhibited by the PVB + MWCNT nanocomposite while the lowest, 1.9 x 10(3) Omega cm, is exhibited by the PVB + graphene. Nanocomposite films are fabricated by a simple processing route using ultrasonic mixing and spin coating.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Structure and Properties of Polymer Nanocomposite Films With Carbon Nanotubes and Graphene
EP  - E497
SP  - E490
VL  - 38
DO  - 10.1002/pc.24079
ER  - 
@article{
author = "Radmilović, Vuk and Carraro, Carlo and Uskoković, Petar and Radmilović, Velimir R.",
year = "2017",
abstract = "In this report, we demonstrate a simple fabrication route for polyvinyl butyral (PVB)-based nanocomposites with carbon nanotubes and graphene. In spite of insufficient percolation threshold due to low concentration of carbonaceous nanofillers, in the amount of 1 wt%, significant improvement of electrical and mechanical properties with negligible deterioration of optical properties for the polymer PVB matrix can be achieved. Both hardness and modulus increase and electrical resistivity and transmittance decrease in this order: PVB + multi-wall carbon nanotubes (MWCNT) double right arrow PVB+single-wall carbon nanotubes (SWCNT) double right arrow PVB + graphene. The largest values of reduced modulus and hardness are observed for the PVB + graphene nanocomposite, obtained by nanoindentation. Transmittance is similar to 84%, 86%, 89%, and 91% at 370 nm, and at 550 nm is similar to 84%, 88%, 90%, and 92%, for PVB + graphene, PVB+MWCNT, PVB + SWCNT, and pure PVB, respectively. The highest resistivity of 4 x 10(4) Omega cm is exhibited by the PVB + MWCNT nanocomposite while the lowest, 1.9 x 10(3) Omega cm, is exhibited by the PVB + graphene. Nanocomposite films are fabricated by a simple processing route using ultrasonic mixing and spin coating.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Structure and Properties of Polymer Nanocomposite Films With Carbon Nanotubes and Graphene",
pages = "E497-E490",
volume = "38",
doi = "10.1002/pc.24079"
}
Radmilović, V., Carraro, C., Uskoković, P.,& Radmilović, V. R.. (2017). Structure and Properties of Polymer Nanocomposite Films With Carbon Nanotubes and Graphene. in Polymer Composites
Wiley, Hoboken., 38, E490-E497.
https://doi.org/10.1002/pc.24079
Radmilović V, Carraro C, Uskoković P, Radmilović VR. Structure and Properties of Polymer Nanocomposite Films With Carbon Nanotubes and Graphene. in Polymer Composites. 2017;38:E490-E497.
doi:10.1002/pc.24079 .
Radmilović, Vuk, Carraro, Carlo, Uskoković, Petar, Radmilović, Velimir R., "Structure and Properties of Polymer Nanocomposite Films With Carbon Nanotubes and Graphene" in Polymer Composites, 38 (2017):E490-E497,
https://doi.org/10.1002/pc.24079 . .
13
5
10

Low temperature solid-state wetting and formation of nanowelds in silver nanowires

Radmilović, Vuk; Goebelt, Manuela; Ophus, Colin; Christiansen, Silke; Spiecker, Erdmann; Radmilović, Velimir R.

(IOP Publishing Ltd, Bristol, 2017)

TY  - JOUR
AU  - Radmilović, Vuk
AU  - Goebelt, Manuela
AU  - Ophus, Colin
AU  - Christiansen, Silke
AU  - Spiecker, Erdmann
AU  - Radmilović, Velimir R.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3633
AB  - This article focuses on the microscopic mechanism of thermally induced nanoweld formation between silver nanowires (AgNWs) which is a key process for improving electrical conductivity in NW networks employed for transparent electrodes. Focused ion beam sectioning and transmission electron microscopy were applied in order to elucidate the atomic structure of a welded NW including measurement of the wetting contact angle and characterization of defect structure with atomic accuracy, which provides fundamental information on the welding mechanism. Crystal lattice strain, obtained by direct evaluation of atomic column displacements in high resolution scanning transmission electron microscopy images, was shown to be non-uniform among the five twin segments of the AgNW pentagonal structure. It was found that the pentagonal cross-sectional morphology of AgNWs has a dominant effect on the formation of nanowelds by controlling initial wetting as well as diffusion of Ag atoms between the NWs. Due to complete solid-state wetting, at an angle of similar to 4.8 degrees, the welding process starts with homoepitaxial nucleation of an initial Ag layer on (100) surface facets, considered to have an infinitely large radius of curvature. However, the strong driving force for this process due to the Gibbs-Thomson effect, requires the NW contact to occur through the corner of the pentagonal cross-section of the second NW providing a small radius of curvature. After the initial layer is formed, the welded zone continues to grow and extends out epitaxially to the neighboring twin segments.
PB  - IOP Publishing Ltd, Bristol
T2  - Nanotechnology
T1  - Low temperature solid-state wetting and formation of nanowelds in silver nanowires
IS  - 38
VL  - 28
DO  - 10.1088/1361-6528/aa7eb8
ER  - 
@article{
author = "Radmilović, Vuk and Goebelt, Manuela and Ophus, Colin and Christiansen, Silke and Spiecker, Erdmann and Radmilović, Velimir R.",
year = "2017",
abstract = "This article focuses on the microscopic mechanism of thermally induced nanoweld formation between silver nanowires (AgNWs) which is a key process for improving electrical conductivity in NW networks employed for transparent electrodes. Focused ion beam sectioning and transmission electron microscopy were applied in order to elucidate the atomic structure of a welded NW including measurement of the wetting contact angle and characterization of defect structure with atomic accuracy, which provides fundamental information on the welding mechanism. Crystal lattice strain, obtained by direct evaluation of atomic column displacements in high resolution scanning transmission electron microscopy images, was shown to be non-uniform among the five twin segments of the AgNW pentagonal structure. It was found that the pentagonal cross-sectional morphology of AgNWs has a dominant effect on the formation of nanowelds by controlling initial wetting as well as diffusion of Ag atoms between the NWs. Due to complete solid-state wetting, at an angle of similar to 4.8 degrees, the welding process starts with homoepitaxial nucleation of an initial Ag layer on (100) surface facets, considered to have an infinitely large radius of curvature. However, the strong driving force for this process due to the Gibbs-Thomson effect, requires the NW contact to occur through the corner of the pentagonal cross-section of the second NW providing a small radius of curvature. After the initial layer is formed, the welded zone continues to grow and extends out epitaxially to the neighboring twin segments.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "Nanotechnology",
title = "Low temperature solid-state wetting and formation of nanowelds in silver nanowires",
number = "38",
volume = "28",
doi = "10.1088/1361-6528/aa7eb8"
}
Radmilović, V., Goebelt, M., Ophus, C., Christiansen, S., Spiecker, E.,& Radmilović, V. R.. (2017). Low temperature solid-state wetting and formation of nanowelds in silver nanowires. in Nanotechnology
IOP Publishing Ltd, Bristol., 28(38).
https://doi.org/10.1088/1361-6528/aa7eb8
Radmilović V, Goebelt M, Ophus C, Christiansen S, Spiecker E, Radmilović VR. Low temperature solid-state wetting and formation of nanowelds in silver nanowires. in Nanotechnology. 2017;28(38).
doi:10.1088/1361-6528/aa7eb8 .
Radmilović, Vuk, Goebelt, Manuela, Ophus, Colin, Christiansen, Silke, Spiecker, Erdmann, Radmilović, Velimir R., "Low temperature solid-state wetting and formation of nanowelds in silver nanowires" in Nanotechnology, 28, no. 38 (2017),
https://doi.org/10.1088/1361-6528/aa7eb8 . .
8
4
9

Shape evolution of carbon supported Pt nanoparticles: From synthesis to application

Krstajić-Pajić, Mila; Stevanović, Sanja; Radmilović, Vuk; Gavrilović-Wohlmuther, Aleksandra; Radmilović, Velimir R.; Gojković, Snežana Lj.; Jovanović, Vladislava M.

(Elsevier Science Bv, Amsterdam, 2016)

TY  - JOUR
AU  - Krstajić-Pajić, Mila
AU  - Stevanović, Sanja
AU  - Radmilović, Vuk
AU  - Gavrilović-Wohlmuther, Aleksandra
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana Lj.
AU  - Jovanović, Vladislava M.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3221
AB  - In this research, a water-in-oil microemulsion method with HCl as a capping agent was applied to synthesize carbon supported Pt catalysts. Varying the concentration of HCl caused changes in the shape of obtained nanoparticles, i.e. preferential growth of certain facets. Addition of catalyst support in the synthesis process facilitated the cleaning procedures necessary to remove the surfactant residues. Prepared catalyst powders were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). XRD analysis indicated the influence of HCl addition on the crystallite size and crystal habit. TEM revealed that addition of higher amounts of the capping agent led to the formation of a noticable amount of particles with concave cubic or branched-like structures. Influence of the catalyst particles shape on its electrochemical properties was tested in the oxidations of COads, ammonia and formic acid. The latter one was examined in terms of both activity and stability of as prepared and oxide-annealed (electrochemically treated) catalysts. The results clearly demonstrate that even small changes in the nanoparticle surface structure give rise to distinct modifications in their properties. Concave cubic particles, in comparison to other catalysts, show improved catalytic properties and the contribution of their preferentially oriented {100} facets is electrochemically detectable.
PB  - Elsevier Science Bv, Amsterdam
T2  - Applied Catalysis B-Environmental
T1  - Shape evolution of carbon supported Pt nanoparticles: From synthesis to application
EP  - 184
SP  - 174
VL  - 196
DO  - 10.1016/j.apcatb.2016.05.033
ER  - 
@article{
author = "Krstajić-Pajić, Mila and Stevanović, Sanja and Radmilović, Vuk and Gavrilović-Wohlmuther, Aleksandra and Radmilović, Velimir R. and Gojković, Snežana Lj. and Jovanović, Vladislava M.",
year = "2016",
abstract = "In this research, a water-in-oil microemulsion method with HCl as a capping agent was applied to synthesize carbon supported Pt catalysts. Varying the concentration of HCl caused changes in the shape of obtained nanoparticles, i.e. preferential growth of certain facets. Addition of catalyst support in the synthesis process facilitated the cleaning procedures necessary to remove the surfactant residues. Prepared catalyst powders were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). XRD analysis indicated the influence of HCl addition on the crystallite size and crystal habit. TEM revealed that addition of higher amounts of the capping agent led to the formation of a noticable amount of particles with concave cubic or branched-like structures. Influence of the catalyst particles shape on its electrochemical properties was tested in the oxidations of COads, ammonia and formic acid. The latter one was examined in terms of both activity and stability of as prepared and oxide-annealed (electrochemically treated) catalysts. The results clearly demonstrate that even small changes in the nanoparticle surface structure give rise to distinct modifications in their properties. Concave cubic particles, in comparison to other catalysts, show improved catalytic properties and the contribution of their preferentially oriented {100} facets is electrochemically detectable.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Catalysis B-Environmental",
title = "Shape evolution of carbon supported Pt nanoparticles: From synthesis to application",
pages = "184-174",
volume = "196",
doi = "10.1016/j.apcatb.2016.05.033"
}
Krstajić-Pajić, M., Stevanović, S., Radmilović, V., Gavrilović-Wohlmuther, A., Radmilović, V. R., Gojković, S. Lj.,& Jovanović, V. M.. (2016). Shape evolution of carbon supported Pt nanoparticles: From synthesis to application. in Applied Catalysis B-Environmental
Elsevier Science Bv, Amsterdam., 196, 174-184.
https://doi.org/10.1016/j.apcatb.2016.05.033
Krstajić-Pajić M, Stevanović S, Radmilović V, Gavrilović-Wohlmuther A, Radmilović VR, Gojković SL, Jovanović VM. Shape evolution of carbon supported Pt nanoparticles: From synthesis to application. in Applied Catalysis B-Environmental. 2016;196:174-184.
doi:10.1016/j.apcatb.2016.05.033 .
Krstajić-Pajić, Mila, Stevanović, Sanja, Radmilović, Vuk, Gavrilović-Wohlmuther, Aleksandra, Radmilović, Velimir R., Gojković, Snežana Lj., Jovanović, Vladislava M., "Shape evolution of carbon supported Pt nanoparticles: From synthesis to application" in Applied Catalysis B-Environmental, 196 (2016):174-184,
https://doi.org/10.1016/j.apcatb.2016.05.033 . .
1
15
14
15

Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag

Niklioc, I.; Marković, Smilja; Janković-Častvan, Ivona; Radmilović, Vuk; Karanović, Ljiljana; Babić, Biljana M.; Radmilović, Velimir R.

(Elsevier Science Bv, Amsterdam, 2016)

TY  - JOUR
AU  - Niklioc, I.
AU  - Marković, Smilja
AU  - Janković-Častvan, Ivona
AU  - Radmilović, Vuk
AU  - Karanović, Ljiljana
AU  - Babić, Biljana M.
AU  - Radmilović, Velimir R.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3238
AB  - Geopolymeric binders (GB) were produced using fly ash (FA) and electric arc furnace slag (EAFS). The slag has been added in the range of 0-40%. The effects of slag content on the strength, microstructure and thermal resistance were evaluated. It was found that the amount of EAFS up to 30% positively affects the strength evolution of GB. The main reaction product of FA/EAFS blends was amorphous N-
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Letters
T1  - Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag
EP  - 305
SP  - 301
VL  - 176
DO  - 10.1016/j.matlet.2016.04.121
ER  - 
@article{
author = "Niklioc, I. and Marković, Smilja and Janković-Častvan, Ivona and Radmilović, Vuk and Karanović, Ljiljana and Babić, Biljana M. and Radmilović, Velimir R.",
year = "2016",
abstract = "Geopolymeric binders (GB) were produced using fly ash (FA) and electric arc furnace slag (EAFS). The slag has been added in the range of 0-40%. The effects of slag content on the strength, microstructure and thermal resistance were evaluated. It was found that the amount of EAFS up to 30% positively affects the strength evolution of GB. The main reaction product of FA/EAFS blends was amorphous N-",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Letters",
title = "Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag",
pages = "305-301",
volume = "176",
doi = "10.1016/j.matlet.2016.04.121"
}
Niklioc, I., Marković, S., Janković-Častvan, I., Radmilović, V., Karanović, L., Babić, B. M.,& Radmilović, V. R.. (2016). Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag. in Materials Letters
Elsevier Science Bv, Amsterdam., 176, 301-305.
https://doi.org/10.1016/j.matlet.2016.04.121
Niklioc I, Marković S, Janković-Častvan I, Radmilović V, Karanović L, Babić BM, Radmilović VR. Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag. in Materials Letters. 2016;176:301-305.
doi:10.1016/j.matlet.2016.04.121 .
Niklioc, I., Marković, Smilja, Janković-Častvan, Ivona, Radmilović, Vuk, Karanović, Ljiljana, Babić, Biljana M., Radmilović, Velimir R., "Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag" in Materials Letters, 176 (2016):301-305,
https://doi.org/10.1016/j.matlet.2016.04.121 . .
56
26
54

Pt/C nanocatalysts for methanol electrooxidation prepared by water-in-oil microemulsion method

Krstajić-Pajić, Mila; Stevanović, Sanja; Radmilović, Vuk; Rogan, Jelena; Radmilović, Velimir R.; Gojković, Snežana Lj.; Jovanović, Vladislava M.

(Springer, New York, 2016)

TY  - JOUR
AU  - Krstajić-Pajić, Mila
AU  - Stevanović, Sanja
AU  - Radmilović, Vuk
AU  - Rogan, Jelena
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana Lj.
AU  - Jovanović, Vladislava M.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3321
AB  - Pt nanoparticles supported on Vulcan XC-72R were synthesized by water-in-oil microemulsion method. By incorporating different amounts of HCl as a capping agent in the precursor-containing water phase, nanoparticle shape was varied. Influencing the growth of certain facets leads to the changes of the particle shape depending on the preferential facets. As a result, nanoparticles exhibit some of the electrochemical features typical for single crystals. Commonly employed synthesis procedure for water-in-oil microemulsion method was altered with the addition of catalyst support in the system and changing the catalyst cleaning steps. Prepared catalysts were characterized by thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and electrochemical methods. Activity and stability for methanol oxidation reaction (MOR), a structure-sensitive reaction, were tested. Electrochemical results reveal the influence of particle size, shape and exposed facets on the electrochemical processes. TEM investigations confirm electrochemical findings, while TGA verifies Pt loading in catalyst powder. Based on the results, optimal HCl concentration for cubic particle formation is determined, and structural effect on MOR activity and stability was tested. Cuboidal NPs show very good reaction activity and fair stability under applied experimental conditions.
PB  - Springer, New York
T2  - Journal of Solid State Electrochemistry
T1  - Pt/C nanocatalysts for methanol electrooxidation prepared by water-in-oil microemulsion method
EP  - 3414
IS  - 12
SP  - 3405
VL  - 20
DO  - 10.1007/s10008-016-3319-z
ER  - 
@article{
author = "Krstajić-Pajić, Mila and Stevanović, Sanja and Radmilović, Vuk and Rogan, Jelena and Radmilović, Velimir R. and Gojković, Snežana Lj. and Jovanović, Vladislava M.",
year = "2016",
abstract = "Pt nanoparticles supported on Vulcan XC-72R were synthesized by water-in-oil microemulsion method. By incorporating different amounts of HCl as a capping agent in the precursor-containing water phase, nanoparticle shape was varied. Influencing the growth of certain facets leads to the changes of the particle shape depending on the preferential facets. As a result, nanoparticles exhibit some of the electrochemical features typical for single crystals. Commonly employed synthesis procedure for water-in-oil microemulsion method was altered with the addition of catalyst support in the system and changing the catalyst cleaning steps. Prepared catalysts were characterized by thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and electrochemical methods. Activity and stability for methanol oxidation reaction (MOR), a structure-sensitive reaction, were tested. Electrochemical results reveal the influence of particle size, shape and exposed facets on the electrochemical processes. TEM investigations confirm electrochemical findings, while TGA verifies Pt loading in catalyst powder. Based on the results, optimal HCl concentration for cubic particle formation is determined, and structural effect on MOR activity and stability was tested. Cuboidal NPs show very good reaction activity and fair stability under applied experimental conditions.",
publisher = "Springer, New York",
journal = "Journal of Solid State Electrochemistry",
title = "Pt/C nanocatalysts for methanol electrooxidation prepared by water-in-oil microemulsion method",
pages = "3414-3405",
number = "12",
volume = "20",
doi = "10.1007/s10008-016-3319-z"
}
Krstajić-Pajić, M., Stevanović, S., Radmilović, V., Rogan, J., Radmilović, V. R., Gojković, S. Lj.,& Jovanović, V. M.. (2016). Pt/C nanocatalysts for methanol electrooxidation prepared by water-in-oil microemulsion method. in Journal of Solid State Electrochemistry
Springer, New York., 20(12), 3405-3414.
https://doi.org/10.1007/s10008-016-3319-z
Krstajić-Pajić M, Stevanović S, Radmilović V, Rogan J, Radmilović VR, Gojković SL, Jovanović VM. Pt/C nanocatalysts for methanol electrooxidation prepared by water-in-oil microemulsion method. in Journal of Solid State Electrochemistry. 2016;20(12):3405-3414.
doi:10.1007/s10008-016-3319-z .
Krstajić-Pajić, Mila, Stevanović, Sanja, Radmilović, Vuk, Rogan, Jelena, Radmilović, Velimir R., Gojković, Snežana Lj., Jovanović, Vladislava M., "Pt/C nanocatalysts for methanol electrooxidation prepared by water-in-oil microemulsion method" in Journal of Solid State Electrochemistry, 20, no. 12 (2016):3405-3414,
https://doi.org/10.1007/s10008-016-3319-z . .
1
3
2
3

Multiple Twinning and Stacking Faults in Silver Dendrites

Radmilović, Vuk; Kacher, Josh; Ivanović, Evica; Minor, Andrew M.; Radmilović, Velimir R.

(Amer Chemical Soc, Washington, 2016)

TY  - JOUR
AU  - Radmilović, Vuk
AU  - Kacher, Josh
AU  - Ivanović, Evica
AU  - Minor, Andrew M.
AU  - Radmilović, Velimir R.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3410
AB  - Detailed defect structure of dendrite formation was studied in order to connect the mesoscopic with the atomistic structure. It was demonstrated that twinning and stacking fault formation play a central role in the growth of electrodeposited Ag dendrites. The broad faces of Ag dendrites and the main trunk growth direction were found to be ((1) over bar 11) and [(1) over bar1 (2) over bar], respectively. Dendrite branches also formed and grew from the main trunk parallel to the [12 (1) over bar] and [(211) over bar] crystallographic directions. Twins and stacking faults were found to reside on the {111} crystallographic planes, as expected for a face centered cubic (FCC) Ag crystal. Using electron back scattered diffraction (EBSD) we found two variants of in-plane 60 degrees rotational twin domains in the ((1) over bar 11) broad dendrite surface plane. The intersections of twins and stacking faults with dendrite arm surfaces are perpendicular to the (112) arm growth directions. However, occasionally twins on the {111} planes parallel to the (112) arm growth directions were also observed. Although defect assisted dendrite growth is facilitated by twinning and stacking fault formation on {111} planes, the growth directions of the trunk and branches are not of the (111) type, but rather close to (112). The (112) growth directions are maintained by breaking dendrite facets into thermodynamically stable 111 and 200 steps and structural ledges of different length.
PB  - Amer Chemical Soc, Washington
T2  - Crystal Growth & Design
T1  - Multiple Twinning and Stacking Faults in Silver Dendrites
EP  - 474
IS  - 1
SP  - 467
VL  - 16
DO  - 10.1021/acs.cgd.5b01459
ER  - 
@article{
author = "Radmilović, Vuk and Kacher, Josh and Ivanović, Evica and Minor, Andrew M. and Radmilović, Velimir R.",
year = "2016",
abstract = "Detailed defect structure of dendrite formation was studied in order to connect the mesoscopic with the atomistic structure. It was demonstrated that twinning and stacking fault formation play a central role in the growth of electrodeposited Ag dendrites. The broad faces of Ag dendrites and the main trunk growth direction were found to be ((1) over bar 11) and [(1) over bar1 (2) over bar], respectively. Dendrite branches also formed and grew from the main trunk parallel to the [12 (1) over bar] and [(211) over bar] crystallographic directions. Twins and stacking faults were found to reside on the {111} crystallographic planes, as expected for a face centered cubic (FCC) Ag crystal. Using electron back scattered diffraction (EBSD) we found two variants of in-plane 60 degrees rotational twin domains in the ((1) over bar 11) broad dendrite surface plane. The intersections of twins and stacking faults with dendrite arm surfaces are perpendicular to the (112) arm growth directions. However, occasionally twins on the {111} planes parallel to the (112) arm growth directions were also observed. Although defect assisted dendrite growth is facilitated by twinning and stacking fault formation on {111} planes, the growth directions of the trunk and branches are not of the (111) type, but rather close to (112). The (112) growth directions are maintained by breaking dendrite facets into thermodynamically stable 111 and 200 steps and structural ledges of different length.",
publisher = "Amer Chemical Soc, Washington",
journal = "Crystal Growth & Design",
title = "Multiple Twinning and Stacking Faults in Silver Dendrites",
pages = "474-467",
number = "1",
volume = "16",
doi = "10.1021/acs.cgd.5b01459"
}
Radmilović, V., Kacher, J., Ivanović, E., Minor, A. M.,& Radmilović, V. R.. (2016). Multiple Twinning and Stacking Faults in Silver Dendrites. in Crystal Growth & Design
Amer Chemical Soc, Washington., 16(1), 467-474.
https://doi.org/10.1021/acs.cgd.5b01459
Radmilović V, Kacher J, Ivanović E, Minor AM, Radmilović VR. Multiple Twinning and Stacking Faults in Silver Dendrites. in Crystal Growth & Design. 2016;16(1):467-474.
doi:10.1021/acs.cgd.5b01459 .
Radmilović, Vuk, Kacher, Josh, Ivanović, Evica, Minor, Andrew M., Radmilović, Velimir R., "Multiple Twinning and Stacking Faults in Silver Dendrites" in Crystal Growth & Design, 16, no. 1 (2016):467-474,
https://doi.org/10.1021/acs.cgd.5b01459 . .
13
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Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media

Obradović, Maja; Stancić, Z M; Lačnjevac, Uroš; Radmilović, Vuk; Gavrilović-Wohlmuther, Aleksandra; Radmilović, Velimir R.; Gojković, Snežana Lj.

(Elsevier, Amsterdam, 2016)

TY  - JOUR
AU  - Obradović, Maja
AU  - Stancić, Z M
AU  - Lačnjevac, Uroš
AU  - Radmilović, Vuk
AU  - Gavrilović-Wohlmuther, Aleksandra
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana Lj.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3437
AB  - Pd-Ni/C catalyst was synthesized employing a borohydride reduction method. The high area Ni was first dispersed on the carbon support and then modified by Pd nanoparticles. Transmission electron microscopy confirmed relatively even distribution of Ni across the carbon support with discrete palladium particles of about 3.3 nm mean diameter on it. Cyclic voltammetry confirmed the presence of Ni on the catalyst surface. The activity of the Pd-Ni/C catalysts for ethanol oxidation reaction (EOR) in alkaline solution was tested under the potentiodynamic and potentiostatic conditions and the results were compared to those obtained on the Pd/C catalyst. It was found that Pd-Ni/C is more active for the EOR compared to Pd/C by a factor up to 3, depending on the type of experiments and whether specific activity or mass activity are considered. During the potentiodynamic stability test an interesting phenomenon of activation of Pd-Ni/C catalyst was observed. It was found that maximum activity is attained after fifty cycles with the positive potential limit of 1.2 V, regardless of whether they were performed in the electrolyte with or without ethanol. It was postulated that potential cycling of the Pd-Ni surface causes reorganization of the catalyst surface bringing Pd and Ni sites to a more suitable arrangement for the efficient ethanol oxidation.
PB  - Elsevier, Amsterdam
T2  - Applied Catalysis B-Environmental
T1  - Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media
EP  - 118
SP  - 110
VL  - 189
DO  - 10.1016/j.apcatb.2016.02.039
ER  - 
@article{
author = "Obradović, Maja and Stancić, Z M and Lačnjevac, Uroš and Radmilović, Vuk and Gavrilović-Wohlmuther, Aleksandra and Radmilović, Velimir R. and Gojković, Snežana Lj.",
year = "2016",
abstract = "Pd-Ni/C catalyst was synthesized employing a borohydride reduction method. The high area Ni was first dispersed on the carbon support and then modified by Pd nanoparticles. Transmission electron microscopy confirmed relatively even distribution of Ni across the carbon support with discrete palladium particles of about 3.3 nm mean diameter on it. Cyclic voltammetry confirmed the presence of Ni on the catalyst surface. The activity of the Pd-Ni/C catalysts for ethanol oxidation reaction (EOR) in alkaline solution was tested under the potentiodynamic and potentiostatic conditions and the results were compared to those obtained on the Pd/C catalyst. It was found that Pd-Ni/C is more active for the EOR compared to Pd/C by a factor up to 3, depending on the type of experiments and whether specific activity or mass activity are considered. During the potentiodynamic stability test an interesting phenomenon of activation of Pd-Ni/C catalyst was observed. It was found that maximum activity is attained after fifty cycles with the positive potential limit of 1.2 V, regardless of whether they were performed in the electrolyte with or without ethanol. It was postulated that potential cycling of the Pd-Ni surface causes reorganization of the catalyst surface bringing Pd and Ni sites to a more suitable arrangement for the efficient ethanol oxidation.",
publisher = "Elsevier, Amsterdam",
journal = "Applied Catalysis B-Environmental",
title = "Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media",
pages = "118-110",
volume = "189",
doi = "10.1016/j.apcatb.2016.02.039"
}
Obradović, M., Stancić, Z. M., Lačnjevac, U., Radmilović, V., Gavrilović-Wohlmuther, A., Radmilović, V. R.,& Gojković, S. Lj.. (2016). Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media. in Applied Catalysis B-Environmental
Elsevier, Amsterdam., 189, 110-118.
https://doi.org/10.1016/j.apcatb.2016.02.039
Obradović M, Stancić ZM, Lačnjevac U, Radmilović V, Gavrilović-Wohlmuther A, Radmilović VR, Gojković SL. Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media. in Applied Catalysis B-Environmental. 2016;189:110-118.
doi:10.1016/j.apcatb.2016.02.039 .
Obradović, Maja, Stancić, Z M, Lačnjevac, Uroš, Radmilović, Vuk, Gavrilović-Wohlmuther, Aleksandra, Radmilović, Velimir R., Gojković, Snežana Lj., "Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media" in Applied Catalysis B-Environmental, 189 (2016):110-118,
https://doi.org/10.1016/j.apcatb.2016.02.039 . .
1
99
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93

Kinetics of electric arc furnace slag leaching in alkaline solutions

Nikolić, Irena; Drincić, Ana; Đurović, Dijana; Karanović, Ljiljana; Radmilović, Vuk; Radmilović, Velimir R.

(Elsevier Sci Ltd, Oxford, 2016)

TY  - JOUR
AU  - Nikolić, Irena
AU  - Drincić, Ana
AU  - Đurović, Dijana
AU  - Karanović, Ljiljana
AU  - Radmilović, Vuk
AU  - Radmilović, Velimir R.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3463
AB  - The dissolution of electric arc furnace steel slag (EAFSS) in highly alkaline MOH solution (M = alkali metal Na or K) has been investigated with emphases on the influence of the initial alkali concentration, solid to liquid (S/L) ratio and temperature on the kinetics of Si and Al dissolution from EAFSS. The shrinking core model (SCM) was used to analyze experimental data and the results have shown that the Si and Al dissolution from EAFSS was greatly influenced by MOH concentration, alkaline ion type and temperature. The dissolution process was controlled by the bulk diffusion through the product layer crystals. The activation energy for Si and Al dissolution was 55.27 kJ/mol and 48.05 kJ/mol in NaOH solution and 90.68 kJ/mol and 33.62 kJ/mol in KOH solution, respectively.
PB  - Elsevier Sci Ltd, Oxford
T2  - Construction and Building Materials
T1  - Kinetics of electric arc furnace slag leaching in alkaline solutions
EP  - 9
SP  - 1
VL  - 108
DO  - 10.1016/j.conbuildmat.2016.01.038
ER  - 
@article{
author = "Nikolić, Irena and Drincić, Ana and Đurović, Dijana and Karanović, Ljiljana and Radmilović, Vuk and Radmilović, Velimir R.",
year = "2016",
abstract = "The dissolution of electric arc furnace steel slag (EAFSS) in highly alkaline MOH solution (M = alkali metal Na or K) has been investigated with emphases on the influence of the initial alkali concentration, solid to liquid (S/L) ratio and temperature on the kinetics of Si and Al dissolution from EAFSS. The shrinking core model (SCM) was used to analyze experimental data and the results have shown that the Si and Al dissolution from EAFSS was greatly influenced by MOH concentration, alkaline ion type and temperature. The dissolution process was controlled by the bulk diffusion through the product layer crystals. The activation energy for Si and Al dissolution was 55.27 kJ/mol and 48.05 kJ/mol in NaOH solution and 90.68 kJ/mol and 33.62 kJ/mol in KOH solution, respectively.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Construction and Building Materials",
title = "Kinetics of electric arc furnace slag leaching in alkaline solutions",
pages = "9-1",
volume = "108",
doi = "10.1016/j.conbuildmat.2016.01.038"
}
Nikolić, I., Drincić, A., Đurović, D., Karanović, L., Radmilović, V.,& Radmilović, V. R.. (2016). Kinetics of electric arc furnace slag leaching in alkaline solutions. in Construction and Building Materials
Elsevier Sci Ltd, Oxford., 108, 1-9.
https://doi.org/10.1016/j.conbuildmat.2016.01.038
Nikolić I, Drincić A, Đurović D, Karanović L, Radmilović V, Radmilović VR. Kinetics of electric arc furnace slag leaching in alkaline solutions. in Construction and Building Materials. 2016;108:1-9.
doi:10.1016/j.conbuildmat.2016.01.038 .
Nikolić, Irena, Drincić, Ana, Đurović, Dijana, Karanović, Ljiljana, Radmilović, Vuk, Radmilović, Velimir R., "Kinetics of electric arc furnace slag leaching in alkaline solutions" in Construction and Building Materials, 108 (2016):1-9,
https://doi.org/10.1016/j.conbuildmat.2016.01.038 . .
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