TY  - JOUR
AU  - Nikolic, Nebojša D.
AU  - Avramović, Ljiljana
AU  - Ivanović, Evica R.
AU  - Maksimović, Vesna M
AU  - Baščarević, Zvezdana
AU  - Ignjatović, Nenad
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1231
AB  - Production of copper powders by the potentiostatic electrolysis under different hydrogen evolution conditions was investigated. Copper powders were characterized by the scanning electron microscope (SEM), X-ray diffraction (XRD), particle size distribution (PSD), and by the determination of the specific surface area (SSA) of the formed powders. Depending on quantity of hydrogen generated during electrolysis, the two types of particles were formed: dendrites and cauliflower-like particles. The dendrites were formed without, while cauliflower-like particles with the quantity of evolved hydrogen enough to achieve strong effect on hydrodynamic conditions in the near-electrode layer. Although macro structure of the particles was very different, they showed similar micro structure. Namely, both types of the particles consisted of small agglomerates of approximately spherical Cu grains at the micro level. The existence of the spherical morphology was just responsible for random orientation of Cu crystallites in both types of particles. The SSA of cauliflower-like particles was more than two times larger than that of the dendrites, while their size was considerably smaller than that of the dendritic particles. In this way, the useful benefit of Cu powder formation in the conditions of vigorous hydrogen evolution is shown.
PB  - Elsevier Science Bv, Amsterdam
T2  - Transactions of Nonferrous Metals Society of China
T1  - Comparative morphological and crystallographic analysis of copper powders obtained under different electrolysis conditions
EP  - 1284
IS  - 6
SP  - 1275
VL  - 29
DO  - 10.1016/S1003-6326(19)65034-X
ER  - 

@article{
author = "Nikolic, Nebojša D. and Avramović, Ljiljana and Ivanović, Evica R. and Maksimović, Vesna M and Baščarević, Zvezdana and Ignjatović, Nenad",
year = "2019",
abstract = "Production of copper powders by the potentiostatic electrolysis under different hydrogen evolution conditions was investigated. Copper powders were characterized by the scanning electron microscope (SEM), X-ray diffraction (XRD), particle size distribution (PSD), and by the determination of the specific surface area (SSA) of the formed powders. Depending on quantity of hydrogen generated during electrolysis, the two types of particles were formed: dendrites and cauliflower-like particles. The dendrites were formed without, while cauliflower-like particles with the quantity of evolved hydrogen enough to achieve strong effect on hydrodynamic conditions in the near-electrode layer. Although macro structure of the particles was very different, they showed similar micro structure. Namely, both types of the particles consisted of small agglomerates of approximately spherical Cu grains at the micro level. The existence of the spherical morphology was just responsible for random orientation of Cu crystallites in both types of particles. The SSA of cauliflower-like particles was more than two times larger than that of the dendrites, while their size was considerably smaller than that of the dendritic particles. In this way, the useful benefit of Cu powder formation in the conditions of vigorous hydrogen evolution is shown.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Transactions of Nonferrous Metals Society of China",
title = "Comparative morphological and crystallographic analysis of copper powders obtained under different electrolysis conditions",
pages = "1284-1275",
number = "6",
volume = "29",
doi = "10.1016/S1003-6326(19)65034-X"
}

Nikolic, N. D., Avramović, L., Ivanović, E. R., Maksimović, V. M., Baščarević, Z.,& Ignjatović, N.. (2019). Comparative morphological and crystallographic analysis of copper powders obtained under different electrolysis conditions. in Transactions of Nonferrous Metals Society of China
Elsevier Science Bv, Amsterdam., 29(6), 1275-1284.
https://doi.org/10.1016/S1003-6326(19)65034-X

Nikolic ND, Avramović L, Ivanović ER, Maksimović VM, Baščarević Z, Ignjatović N. Comparative morphological and crystallographic analysis of copper powders obtained under different electrolysis conditions. in Transactions of Nonferrous Metals Society of China. 2019;29(6):1275-1284.
doi:10.1016/S1003-6326(19)65034-X .

Nikolic, Nebojša D., Avramović, Ljiljana, Ivanović, Evica R., Maksimović, Vesna M, Baščarević, Zvezdana, Ignjatović, Nenad, "Comparative morphological and crystallographic analysis of copper powders obtained under different electrolysis conditions" in Transactions of Nonferrous Metals Society of China, 29, no. 6 (2019):1275-1284,
https://doi.org/10.1016/S1003-6326(19)65034-X . .

TY  - JOUR
AU  - Nikolic, Nebojša D.
AU  - Popov, Konstantin I
AU  - Ivanović, Evica R.
AU  - Branković, Goran
AU  - Stevanović, Sanja I.
AU  - Živković, Predrag M.
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/896
AB  - Electrodeposition of lead from the concentrated nitrate electrolyte in the potentiostatic regime of electrolysis has been investigated by the analysis of the potentiostatic current transients and scanning electron microscope (SEM). It was found that the process of Pb nucleation from the concentrated electrolyte follows Scharifker model based on the 3D (three-dimensional) instantaneous nucleation with diffusion-controlled growth. The deviations of the obtained dependencies from the theoretical prediction for this model have been also discussed. Needle-like and fern-like dendrites, as well as crystals of irregular shape (precursors of dendrites) were formed in the diffusion controlled electrodeposition. The SEM analysis of these dendritic forms revealed their 2D (two-dimensional) growth. The size of needle-like dendrites was considerably larger than the size of both the fern-like dendrites and the irregular crystals. Although the electrodeposition process occurred inside the linear diffusion layer of the macroelectrode, the shape and size of dendrites were determined by the effect of local diffusion fields formed around tips (spherical diffusion) and top edges (cylindrical diffusion) of protrusions formed in the initial stage of the electrodeposition. The growth rates under the conditions of spherical and cylindrical diffusion control were mutually compared and a faster growth under the conditions of the spherical, in relation to the cylindrical diffusion, was proved. The effect of the current density distribution on formation of the final forms of Pb dendrites was also discussed.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - The potentiostatic current transients and the role of local diffusion fields in formation of the 2D lead dendrites from the concentrated electrolyte
EP  - 148
SP  - 137
VL  - 739
DO  - 10.1016/j.jelechem.2014.12.020
ER  - 

@article{
author = "Nikolic, Nebojša D. and Popov, Konstantin I and Ivanović, Evica R. and Branković, Goran and Stevanović, Sanja I. and Živković, Predrag M.",
year = "2015",
abstract = "Electrodeposition of lead from the concentrated nitrate electrolyte in the potentiostatic regime of electrolysis has been investigated by the analysis of the potentiostatic current transients and scanning electron microscope (SEM). It was found that the process of Pb nucleation from the concentrated electrolyte follows Scharifker model based on the 3D (three-dimensional) instantaneous nucleation with diffusion-controlled growth. The deviations of the obtained dependencies from the theoretical prediction for this model have been also discussed. Needle-like and fern-like dendrites, as well as crystals of irregular shape (precursors of dendrites) were formed in the diffusion controlled electrodeposition. The SEM analysis of these dendritic forms revealed their 2D (two-dimensional) growth. The size of needle-like dendrites was considerably larger than the size of both the fern-like dendrites and the irregular crystals. Although the electrodeposition process occurred inside the linear diffusion layer of the macroelectrode, the shape and size of dendrites were determined by the effect of local diffusion fields formed around tips (spherical diffusion) and top edges (cylindrical diffusion) of protrusions formed in the initial stage of the electrodeposition. The growth rates under the conditions of spherical and cylindrical diffusion control were mutually compared and a faster growth under the conditions of the spherical, in relation to the cylindrical diffusion, was proved. The effect of the current density distribution on formation of the final forms of Pb dendrites was also discussed.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "The potentiostatic current transients and the role of local diffusion fields in formation of the 2D lead dendrites from the concentrated electrolyte",
pages = "148-137",
volume = "739",
doi = "10.1016/j.jelechem.2014.12.020"
}

Nikolic, N. D., Popov, K. I., Ivanović, E. R., Branković, G., Stevanović, S. I.,& Živković, P. M.. (2015). The potentiostatic current transients and the role of local diffusion fields in formation of the 2D lead dendrites from the concentrated electrolyte. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 739, 137-148.
https://doi.org/10.1016/j.jelechem.2014.12.020

Nikolic ND, Popov KI, Ivanović ER, Branković G, Stevanović SI, Živković PM. The potentiostatic current transients and the role of local diffusion fields in formation of the 2D lead dendrites from the concentrated electrolyte. in Journal of Electroanalytical Chemistry. 2015;739:137-148.
doi:10.1016/j.jelechem.2014.12.020 .

Nikolic, Nebojša D., Popov, Konstantin I, Ivanović, Evica R., Branković, Goran, Stevanović, Sanja I., Živković, Predrag M., "The potentiostatic current transients and the role of local diffusion fields in formation of the 2D lead dendrites from the concentrated electrolyte" in Journal of Electroanalytical Chemistry, 739 (2015):137-148,
https://doi.org/10.1016/j.jelechem.2014.12.020 . .

TY  - JOUR
AU  - Nikolic, Nebojša D.
AU  - Ivanović, Evica R.
AU  - Branković, Goran
AU  - Lačnjevac, Uroš
AU  - Stevanović, Sanja I.
AU  - Stevanović, Jasmina S.
AU  - Pavlović, Miomir G.
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/859
AB  - Lead granules synthesized by the potentiostatic regime of electrolysis were characterized by the scanning electron microscopy technique. Effect of the different parameters of electrolysis, such as solution composition, overpotential of electrodeposition, and quantity of the electricity, on lead granular growth has been systematically investigated. Aside from the electrochemical aspects of lead granular growth, crystallographic aspects of the obtained granules were also analyzed. In the dependence of the electrodeposition conditions, granules of various shapes were obtained. The granules, such as octahedrons and hexagons, as well as many various types of twinned particles: single-twinned, multiply-twinned, lamellar-twinned, and many other complicated shapes denoted as polyparticles, were synthesized through regulation of the parameters of electrolysis. Increasing both the concentration of Pb2+ ions and overpotential of the electrodeposition favored the formation of more complicated forms. Formation of granules of specified crystallographic characteristics was also correlated with the basic principle of metal electrocrystallization.
PB  - Springer, New York
T2  - Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science
T1  - Electrochemical and Crystallographic Aspects of Lead Granular Growth
EP  - 1774
IS  - 4
SP  - 1760
VL  - 46
DO  - 10.1007/s11663-015-0385-z
ER  - 

@article{
author = "Nikolic, Nebojša D. and Ivanović, Evica R. and Branković, Goran and Lačnjevac, Uroš and Stevanović, Sanja I. and Stevanović, Jasmina S. and Pavlović, Miomir G.",
year = "2015",
abstract = "Lead granules synthesized by the potentiostatic regime of electrolysis were characterized by the scanning electron microscopy technique. Effect of the different parameters of electrolysis, such as solution composition, overpotential of electrodeposition, and quantity of the electricity, on lead granular growth has been systematically investigated. Aside from the electrochemical aspects of lead granular growth, crystallographic aspects of the obtained granules were also analyzed. In the dependence of the electrodeposition conditions, granules of various shapes were obtained. The granules, such as octahedrons and hexagons, as well as many various types of twinned particles: single-twinned, multiply-twinned, lamellar-twinned, and many other complicated shapes denoted as polyparticles, were synthesized through regulation of the parameters of electrolysis. Increasing both the concentration of Pb2+ ions and overpotential of the electrodeposition favored the formation of more complicated forms. Formation of granules of specified crystallographic characteristics was also correlated with the basic principle of metal electrocrystallization.",
publisher = "Springer, New York",
journal = "Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science",
title = "Electrochemical and Crystallographic Aspects of Lead Granular Growth",
pages = "1774-1760",
number = "4",
volume = "46",
doi = "10.1007/s11663-015-0385-z"
}

Nikolic, N. D., Ivanović, E. R., Branković, G., Lačnjevac, U., Stevanović, S. I., Stevanović, J. S.,& Pavlović, M. G.. (2015). Electrochemical and Crystallographic Aspects of Lead Granular Growth. in Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science
Springer, New York., 46(4), 1760-1774.
https://doi.org/10.1007/s11663-015-0385-z

Nikolic ND, Ivanović ER, Branković G, Lačnjevac U, Stevanović SI, Stevanović JS, Pavlović MG. Electrochemical and Crystallographic Aspects of Lead Granular Growth. in Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science. 2015;46(4):1760-1774.
doi:10.1007/s11663-015-0385-z .

Nikolic, Nebojša D., Ivanović, Evica R., Branković, Goran, Lačnjevac, Uroš, Stevanović, Sanja I., Stevanović, Jasmina S., Pavlović, Miomir G., "Electrochemical and Crystallographic Aspects of Lead Granular Growth" in Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 46, no. 4 (2015):1760-1774,
https://doi.org/10.1007/s11663-015-0385-z . .

TY  - JOUR
AU  - Nikolic, Nebojša D.
AU  - Popov, Konstantin I
AU  - Ivanović, Evica R.
AU  - Branković, Goran
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/798
AB  - The processes of Pb electrodeposition under diffusion control were examined by scanning electron microscopy (SEM) of the formed crystals. The orientation of grains of hexagonal shape formed in the initial stage of electrodeposition strongly affected the final morphology of the Pb crystals. The formation of Pb crystals of the different shape from the same initial shape was discussed in terms of the effect of orientation of initially formed grains on the type of diffusion control. A spherical diffusion layer was formed around the tip of the hexagonal-shaped grain oriented with its tip towards the bulk solution that led to the formation of elongated crystals in the growth process. On the other hand, a cylindrical type of diffusion was responsible for the growth of hexagonal-shaped grains oriented with the lateral side towards the bulk solution. Pb crystals with well-defined sides parallel to the surface area of the macroelectrode were formed under this type of diffusion.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Effect of the orientation of the initially formed grains on the final morphology of electrodeposited lead
EP  - 1005
IS  - 8
SP  - 993
VL  - 79
DO  - 10.2298/JSC131211006N
ER  - 

@article{
author = "Nikolic, Nebojša D. and Popov, Konstantin I and Ivanović, Evica R. and Branković, Goran",
year = "2014",
abstract = "The processes of Pb electrodeposition under diffusion control were examined by scanning electron microscopy (SEM) of the formed crystals. The orientation of grains of hexagonal shape formed in the initial stage of electrodeposition strongly affected the final morphology of the Pb crystals. The formation of Pb crystals of the different shape from the same initial shape was discussed in terms of the effect of orientation of initially formed grains on the type of diffusion control. A spherical diffusion layer was formed around the tip of the hexagonal-shaped grain oriented with its tip towards the bulk solution that led to the formation of elongated crystals in the growth process. On the other hand, a cylindrical type of diffusion was responsible for the growth of hexagonal-shaped grains oriented with the lateral side towards the bulk solution. Pb crystals with well-defined sides parallel to the surface area of the macroelectrode were formed under this type of diffusion.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Effect of the orientation of the initially formed grains on the final morphology of electrodeposited lead",
pages = "1005-993",
number = "8",
volume = "79",
doi = "10.2298/JSC131211006N"
}

Nikolic, N. D., Popov, K. I., Ivanović, E. R.,& Branković, G.. (2014). Effect of the orientation of the initially formed grains on the final morphology of electrodeposited lead. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 79(8), 993-1005.
https://doi.org/10.2298/JSC131211006N

Nikolic ND, Popov KI, Ivanović ER, Branković G. Effect of the orientation of the initially formed grains on the final morphology of electrodeposited lead. in Journal of the Serbian Chemical Society. 2014;79(8):993-1005.
doi:10.2298/JSC131211006N .

Nikolic, Nebojša D., Popov, Konstantin I, Ivanović, Evica R., Branković, Goran, "Effect of the orientation of the initially formed grains on the final morphology of electrodeposited lead" in Journal of the Serbian Chemical Society, 79, no. 8 (2014):993-1005,
https://doi.org/10.2298/JSC131211006N . .