TY  - JOUR
AU  - Fedoroff, M
AU  - Lefevre, G
AU  - Duc, M
AU  - Milonjić, Slobodan K.
AU  - Neskovic, C
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6430
AB  - Ion exchange and surface complexation are the main models used to quantify the sorption processes. Through a multidisciplinary approach, we have shown that the sorption processes are numerous and often do not correspond to simple models. The sorption on hydroxyapatites may proceed, depending on the element, by substitution of superficial species of the solid or by precipitation. On hexacyanoferrates, we can observe ion exchange or formation of new solid phases. On metal oxyhydroxides, the process corresponds to the surface complexation, but several different models of this type can fit the experimental data. Furthermore, slow kinetics, solubility and evolution of the solid, and the presence of impurities can disturb the surface reactivity determination. A better understanding of sorption processes can be achieved by using high-purity materials with controlled structure and morphology, by a multidisciplinary study of sorption mechanisms and by developing more accurate models.
T2  - Materials Science Forum
T1  - Sorption mechanisms and sorption models
VL  - 453-454
SP  - 305
EP  - 314
DO  - 10.4028/www.scientific.net/MSF.453-454.305
ER  - 

@article{
author = "Fedoroff, M and Lefevre, G and Duc, M and Milonjić, Slobodan K. and Neskovic, C",
year = "2004",
abstract = "Ion exchange and surface complexation are the main models used to quantify the sorption processes. Through a multidisciplinary approach, we have shown that the sorption processes are numerous and often do not correspond to simple models. The sorption on hydroxyapatites may proceed, depending on the element, by substitution of superficial species of the solid or by precipitation. On hexacyanoferrates, we can observe ion exchange or formation of new solid phases. On metal oxyhydroxides, the process corresponds to the surface complexation, but several different models of this type can fit the experimental data. Furthermore, slow kinetics, solubility and evolution of the solid, and the presence of impurities can disturb the surface reactivity determination. A better understanding of sorption processes can be achieved by using high-purity materials with controlled structure and morphology, by a multidisciplinary study of sorption mechanisms and by developing more accurate models.",
journal = "Materials Science Forum",
title = "Sorption mechanisms and sorption models",
volume = "453-454",
pages = "305-314",
doi = "10.4028/www.scientific.net/MSF.453-454.305"
}

Fedoroff, M., Lefevre, G., Duc, M., Milonjić, S. K.,& Neskovic, C.. (2004). Sorption mechanisms and sorption models. in Materials Science Forum, 453-454, 305-314.
https://doi.org/10.4028/www.scientific.net/MSF.453-454.305

Fedoroff M, Lefevre G, Duc M, Milonjić SK, Neskovic C. Sorption mechanisms and sorption models. in Materials Science Forum. 2004;453-454:305-314.
doi:10.4028/www.scientific.net/MSF.453-454.305 .

Fedoroff, M, Lefevre, G, Duc, M, Milonjić, Slobodan K., Neskovic, C, "Sorption mechanisms and sorption models" in Materials Science Forum, 453-454 (2004):305-314,
https://doi.org/10.4028/www.scientific.net/MSF.453-454.305 . .

TY  - JOUR
AU  - Duc, M
AU  - Lefevre, G
AU  - Fedoroff, M
AU  - Jeanjean, J
AU  - Rouchaud, JC
AU  - Monteil-Rivera, F
AU  - Dumonceau, J
AU  - Milonjić, Slobodan K.
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6378
AB  - The sorption of selenite and selenate ions from aqueous solutions was investigated on hydroxyapatite, fluorapatite, goethite and hematite, in order to simulate the behavior of radioactive selenium in natural or artificial sorbing media. Correlation studies with acido-basic properties and solubility of the solids were also performed. The sorption is pH dependant, but these solids are very efficient for retaining selenite at pH values generally encountered in natural waters, with however higher K-d values for oxides than apatites. Selenate ions are much less sorbed than selenite. Several methods such as electron microscopy and spectroscopic techniques were used to identify the sorption mechanisms. In the case of hydroxyapatite, sorption proceeds by substitution of phosphate groups in the lattice of the apatite crystal in the superficial layers of the solid. In the case of goethite and hematite, sorption can be interpreted and modeled by a surface complexation process, but there is a discrepancy between sorption site densities for selenite and for protons. (C) 2003 Elsevier Science Ltd. All rights reserved.
T2  - Journal of Environmental Radioactivity
T1  - Sorption of selenium anionic species on apatites and iron oxides from aqueous solutions
VL  - 70
IS  - 1-2
SP  - 61
EP  - 72
DO  - 10.1016/S0265-931X(03)00125-5
ER  - 

@article{
author = "Duc, M and Lefevre, G and Fedoroff, M and Jeanjean, J and Rouchaud, JC and Monteil-Rivera, F and Dumonceau, J and Milonjić, Slobodan K.",
year = "2003",
abstract = "The sorption of selenite and selenate ions from aqueous solutions was investigated on hydroxyapatite, fluorapatite, goethite and hematite, in order to simulate the behavior of radioactive selenium in natural or artificial sorbing media. Correlation studies with acido-basic properties and solubility of the solids were also performed. The sorption is pH dependant, but these solids are very efficient for retaining selenite at pH values generally encountered in natural waters, with however higher K-d values for oxides than apatites. Selenate ions are much less sorbed than selenite. Several methods such as electron microscopy and spectroscopic techniques were used to identify the sorption mechanisms. In the case of hydroxyapatite, sorption proceeds by substitution of phosphate groups in the lattice of the apatite crystal in the superficial layers of the solid. In the case of goethite and hematite, sorption can be interpreted and modeled by a surface complexation process, but there is a discrepancy between sorption site densities for selenite and for protons. (C) 2003 Elsevier Science Ltd. All rights reserved.",
journal = "Journal of Environmental Radioactivity",
title = "Sorption of selenium anionic species on apatites and iron oxides from aqueous solutions",
volume = "70",
number = "1-2",
pages = "61-72",
doi = "10.1016/S0265-931X(03)00125-5"
}

Duc, M., Lefevre, G., Fedoroff, M., Jeanjean, J., Rouchaud, J., Monteil-Rivera, F., Dumonceau, J.,& Milonjić, S. K.. (2003). Sorption of selenium anionic species on apatites and iron oxides from aqueous solutions. in Journal of Environmental Radioactivity, 70(1-2), 61-72.
https://doi.org/10.1016/S0265-931X(03)00125-5

Duc M, Lefevre G, Fedoroff M, Jeanjean J, Rouchaud J, Monteil-Rivera F, Dumonceau J, Milonjić SK. Sorption of selenium anionic species on apatites and iron oxides from aqueous solutions. in Journal of Environmental Radioactivity. 2003;70(1-2):61-72.
doi:10.1016/S0265-931X(03)00125-5 .

Duc, M, Lefevre, G, Fedoroff, M, Jeanjean, J, Rouchaud, JC, Monteil-Rivera, F, Dumonceau, J, Milonjić, Slobodan K., "Sorption of selenium anionic species on apatites and iron oxides from aqueous solutions" in Journal of Environmental Radioactivity, 70, no. 1-2 (2003):61-72,
https://doi.org/10.1016/S0265-931X(03)00125-5 . .

TY  - JOUR
AU  - Panic, V
AU  - Dekanski, Aleksandar B.
AU  - Wang, G
AU  - Fedoroff, M
AU  - Milonjić, Slobodan K.
AU  - Nikolić, Branislav Ž.
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2641
AB  - Characterization of RuO2 and TiO2 sols of different aging times, obtained by forced hydrolysis of appropriate chloride salts, was performed by transmission electron microscopy (TEM). The aging time of TiO2 sols was observed to affect the size of particles as well as the crystallinity of the solid phase of the sols. The surface morphology of RuO2-TiO2 coatings on titanium, obtained by the sol-gel procedure using TiO2 sols of different aging times and RuO2 sol of fixed aging time, was investigated by scanning tunneling microscopy (STM) at three different scan sizes. The STM data indicated uniform microdistribution of the coating material (small microroughness) and an increase in nanoroughness with the aging time of the TiO2 sol. The observed increase in real coating surface area with increasing TiO2 particle size confirms the earlier cyclic voltammetry results. (C) 2003 Elsevier Science (USA). All rights reserved.
T2  - Journal of Colloid and Interface Science
T1  - Morphology of RuO2-TiO2 coatings and TEM characterization of oxide sols used for their preparation
VL  - 263
IS  - 1
SP  - 68
EP  - 73
DO  - 10.1016/S0021-9797(03)00261-3
ER  - 

@article{
author = "Panic, V and Dekanski, Aleksandar B. and Wang, G and Fedoroff, M and Milonjić, Slobodan K. and Nikolić, Branislav Ž.",
year = "2003",
abstract = "Characterization of RuO2 and TiO2 sols of different aging times, obtained by forced hydrolysis of appropriate chloride salts, was performed by transmission electron microscopy (TEM). The aging time of TiO2 sols was observed to affect the size of particles as well as the crystallinity of the solid phase of the sols. The surface morphology of RuO2-TiO2 coatings on titanium, obtained by the sol-gel procedure using TiO2 sols of different aging times and RuO2 sol of fixed aging time, was investigated by scanning tunneling microscopy (STM) at three different scan sizes. The STM data indicated uniform microdistribution of the coating material (small microroughness) and an increase in nanoroughness with the aging time of the TiO2 sol. The observed increase in real coating surface area with increasing TiO2 particle size confirms the earlier cyclic voltammetry results. (C) 2003 Elsevier Science (USA). All rights reserved.",
journal = "Journal of Colloid and Interface Science",
title = "Morphology of RuO2-TiO2 coatings and TEM characterization of oxide sols used for their preparation",
volume = "263",
number = "1",
pages = "68-73",
doi = "10.1016/S0021-9797(03)00261-3"
}

Panic, V., Dekanski, A. B., Wang, G., Fedoroff, M., Milonjić, S. K.,& Nikolić, B. Ž.. (2003). Morphology of RuO2-TiO2 coatings and TEM characterization of oxide sols used for their preparation. in Journal of Colloid and Interface Science, 263(1), 68-73.
https://doi.org/10.1016/S0021-9797(03)00261-3

Panic V, Dekanski AB, Wang G, Fedoroff M, Milonjić SK, Nikolić BŽ. Morphology of RuO2-TiO2 coatings and TEM characterization of oxide sols used for their preparation. in Journal of Colloid and Interface Science. 2003;263(1):68-73.
doi:10.1016/S0021-9797(03)00261-3 .

Panic, V, Dekanski, Aleksandar B., Wang, G, Fedoroff, M, Milonjić, Slobodan K., Nikolić, Branislav Ž., "Morphology of RuO2-TiO2 coatings and TEM characterization of oxide sols used for their preparation" in Journal of Colloid and Interface Science, 263, no. 1 (2003):68-73,
https://doi.org/10.1016/S0021-9797(03)00261-3 . .

TY  - JOUR
AU  - Onjia, Antonije E.
AU  - Milonjić, Slobodan K.
AU  - Todorović, M
AU  - Loos-Neskovic, C
AU  - Fedoroff, M
AU  - Jones, DJ
PY  - 2002
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2530
AB  - The surface properties of Ni and Cu hexacyanoferrates were investigated by the inverse gas chromatography method. Retentions of 10 organic compounds were measured at zero surface coverage in the temperature range 80 to 95 C. The gas/solid partition coefficients and the related thermodynamic data of adsorption (standard free energy change, standard state enthalpies, and entropy changes) also at zero surface coverage were determined. The dispersive component of free surface energy of both hexacyanoferrates, at investigated temperatures, was calculated. The surface acid/base properties were also evaluated using polar adsorbates and the results obtained indicate that nickel hexacyanoferrate is more acidic than copper hexacyanoferrate. (C) 2002 Elsevier Science (USA).
T2  - Journal of Colloid and Interface Science
T1  - An inverse gas chromatography study of the adsorption of organics on nickel- and copper-hexacyanoferrates at zero surface coverage
VL  - 251
IS  - 1
SP  - 10
EP  - 17
DO  - 10.1006/jcis.2002.8372
ER  - 

@article{
author = "Onjia, Antonije E. and Milonjić, Slobodan K. and Todorović, M and Loos-Neskovic, C and Fedoroff, M and Jones, DJ",
year = "2002",
abstract = "The surface properties of Ni and Cu hexacyanoferrates were investigated by the inverse gas chromatography method. Retentions of 10 organic compounds were measured at zero surface coverage in the temperature range 80 to 95 C. The gas/solid partition coefficients and the related thermodynamic data of adsorption (standard free energy change, standard state enthalpies, and entropy changes) also at zero surface coverage were determined. The dispersive component of free surface energy of both hexacyanoferrates, at investigated temperatures, was calculated. The surface acid/base properties were also evaluated using polar adsorbates and the results obtained indicate that nickel hexacyanoferrate is more acidic than copper hexacyanoferrate. (C) 2002 Elsevier Science (USA).",
journal = "Journal of Colloid and Interface Science",
title = "An inverse gas chromatography study of the adsorption of organics on nickel- and copper-hexacyanoferrates at zero surface coverage",
volume = "251",
number = "1",
pages = "10-17",
doi = "10.1006/jcis.2002.8372"
}

Onjia, A. E., Milonjić, S. K., Todorović, M., Loos-Neskovic, C., Fedoroff, M.,& Jones, D.. (2002). An inverse gas chromatography study of the adsorption of organics on nickel- and copper-hexacyanoferrates at zero surface coverage. in Journal of Colloid and Interface Science, 251(1), 10-17.
https://doi.org/10.1006/jcis.2002.8372

Onjia AE, Milonjić SK, Todorović M, Loos-Neskovic C, Fedoroff M, Jones D. An inverse gas chromatography study of the adsorption of organics on nickel- and copper-hexacyanoferrates at zero surface coverage. in Journal of Colloid and Interface Science. 2002;251(1):10-17.
doi:10.1006/jcis.2002.8372 .

Onjia, Antonije E., Milonjić, Slobodan K., Todorović, M, Loos-Neskovic, C, Fedoroff, M, Jones, DJ, "An inverse gas chromatography study of the adsorption of organics on nickel- and copper-hexacyanoferrates at zero surface coverage" in Journal of Colloid and Interface Science, 251, no. 1 (2002):10-17,
https://doi.org/10.1006/jcis.2002.8372 . .

TY  - JOUR
AU  - Milonjić, Slobodan K.
AU  - Bispo, I
AU  - Fedoroff, M
AU  - Loos-Neskovic, C
AU  - Vidal-Madjar, C
PY  - 2002
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2525
AB  - The sorption of cesium ions from aqueous solutions on composite sorbents was investigated in static (by the batch method) and dynamic (on column) conditions. The composite sorbents consisted of copper hexacyanoferrate retained by an anion-exchange polymeric layer bound to porous silica beads. The influence of cesium concentration and solution flow rates on cesium sorption were studied. The cesium sorption isotherm obtained is of the Langmuir type. The shape of the breakthrough curves and the sorption capacity for cesium depend on the preparation procedure of the composites.
T2  - Journal of Radioanalytical and Nuclear Chemistry
T1  - Sorption of cesium on copper hexacyanoferrate/polymer/silica composites in batch and dynamic conditions
VL  - 252
IS  - 3
SP  - 497
EP  - 501
DO  - 10.1023/A:1015846502676
ER  - 

@article{
author = "Milonjić, Slobodan K. and Bispo, I and Fedoroff, M and Loos-Neskovic, C and Vidal-Madjar, C",
year = "2002",
abstract = "The sorption of cesium ions from aqueous solutions on composite sorbents was investigated in static (by the batch method) and dynamic (on column) conditions. The composite sorbents consisted of copper hexacyanoferrate retained by an anion-exchange polymeric layer bound to porous silica beads. The influence of cesium concentration and solution flow rates on cesium sorption were studied. The cesium sorption isotherm obtained is of the Langmuir type. The shape of the breakthrough curves and the sorption capacity for cesium depend on the preparation procedure of the composites.",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
title = "Sorption of cesium on copper hexacyanoferrate/polymer/silica composites in batch and dynamic conditions",
volume = "252",
number = "3",
pages = "497-501",
doi = "10.1023/A:1015846502676"
}

Milonjić, S. K., Bispo, I., Fedoroff, M., Loos-Neskovic, C.,& Vidal-Madjar, C.. (2002). Sorption of cesium on copper hexacyanoferrate/polymer/silica composites in batch and dynamic conditions. in Journal of Radioanalytical and Nuclear Chemistry, 252(3), 497-501.
https://doi.org/10.1023/A:1015846502676

Milonjić SK, Bispo I, Fedoroff M, Loos-Neskovic C, Vidal-Madjar C. Sorption of cesium on copper hexacyanoferrate/polymer/silica composites in batch and dynamic conditions. in Journal of Radioanalytical and Nuclear Chemistry. 2002;252(3):497-501.
doi:10.1023/A:1015846502676 .

Milonjić, Slobodan K., Bispo, I, Fedoroff, M, Loos-Neskovic, C, Vidal-Madjar, C, "Sorption of cesium on copper hexacyanoferrate/polymer/silica composites in batch and dynamic conditions" in Journal of Radioanalytical and Nuclear Chemistry, 252, no. 3 (2002):497-501,
https://doi.org/10.1023/A:1015846502676 . .