TY  - JOUR
AU  - Daković, Aleksandra
AU  - Kragović, Milan
AU  - Rottinghaus, George E.
AU  - Sekulić, Živko
AU  - Milićević, Sonja
AU  - Milonjić, Slobodan K.
AU  - Zarić, Snežana
PY  - 2010
UR  - https://ritnms.itnms.ac.rs/handle/123456789/177
AB  - Natural Zeolitic tuff was modified with 2, 5 and 10 mmol M+/100 g of octadecyldimethylbenzyl ammonium (ODMBA) ions and the products were denoted as OZ-2, OZ-5 and OZ-10. The starting material and organozeolites were characterized by determination of the point of zero charge (pH(pzc)) and by thermal analysis. in vitro sorption of fumonisin B-1 (FB1) was studied for all sorbents at pH 3, 7 and 9. The pH(pzc) for the zeolitic tuff was 6.8 +/- 0.1, while the pH(pzc) for OZ-2, OZ-5 and OZ-10 pH(pzc) was 7.0 +/- 0.1. The curves pH(final) = f(pH(initial)) suggest that the surfaces of all sorbents are positively charged at pH 3 and uncharged at pH 7 and 9. High sorption of FB1 by the zeolitic tuff in acidic solution Suggests electrostatic Interactions between the anionic FB1 and the positively charged surface. At pH 7 and 9, adsorption of FB1 is prevented because anionic FB1 cannot be adsorbed at the uncharged surface. From the pH(pzc) for the organozeolites, it is possible that with lower amounts of ODMBA (OZ-2 and OZ-5), at pH 3, beside interactions between head groups of ODMBA and its alkyl chains and anionic FB1, electrostatic interactions between positive uncovered surface and anionic FB1 contribute to the sorption, while at pH 7 and 9 there is only the possibility for interactions between FB1 and ODMBA. When the zeolitic surface was completely covered with ODMBA (OZ-10), FB1 sorption was independent of the form of FB1 suggesting only interactions between ODMBA and FB1.
PB  - Elsevier, Amsterdam
T2  - Colloids and Surfaces B-Biointerfaces
T1  - Influence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B-1
EP  - 278
IS  - 1
SP  - 272
VL  - 76
DO  - 10.1016/j.colsurfb.2009.11.003
UR  - conv_577
ER  - 

@article{
author = "Daković, Aleksandra and Kragović, Milan and Rottinghaus, George E. and Sekulić, Živko and Milićević, Sonja and Milonjić, Slobodan K. and Zarić, Snežana",
year = "2010",
abstract = "Natural Zeolitic tuff was modified with 2, 5 and 10 mmol M+/100 g of octadecyldimethylbenzyl ammonium (ODMBA) ions and the products were denoted as OZ-2, OZ-5 and OZ-10. The starting material and organozeolites were characterized by determination of the point of zero charge (pH(pzc)) and by thermal analysis. in vitro sorption of fumonisin B-1 (FB1) was studied for all sorbents at pH 3, 7 and 9. The pH(pzc) for the zeolitic tuff was 6.8 +/- 0.1, while the pH(pzc) for OZ-2, OZ-5 and OZ-10 pH(pzc) was 7.0 +/- 0.1. The curves pH(final) = f(pH(initial)) suggest that the surfaces of all sorbents are positively charged at pH 3 and uncharged at pH 7 and 9. High sorption of FB1 by the zeolitic tuff in acidic solution Suggests electrostatic Interactions between the anionic FB1 and the positively charged surface. At pH 7 and 9, adsorption of FB1 is prevented because anionic FB1 cannot be adsorbed at the uncharged surface. From the pH(pzc) for the organozeolites, it is possible that with lower amounts of ODMBA (OZ-2 and OZ-5), at pH 3, beside interactions between head groups of ODMBA and its alkyl chains and anionic FB1, electrostatic interactions between positive uncovered surface and anionic FB1 contribute to the sorption, while at pH 7 and 9 there is only the possibility for interactions between FB1 and ODMBA. When the zeolitic surface was completely covered with ODMBA (OZ-10), FB1 sorption was independent of the form of FB1 suggesting only interactions between ODMBA and FB1.",
publisher = "Elsevier, Amsterdam",
journal = "Colloids and Surfaces B-Biointerfaces",
title = "Influence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B-1",
pages = "278-272",
number = "1",
volume = "76",
doi = "10.1016/j.colsurfb.2009.11.003",
url = "conv_577"
}

Daković, A., Kragović, M., Rottinghaus, G. E., Sekulić, Ž., Milićević, S., Milonjić, S. K.,& Zarić, S.. (2010). Influence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B-1. in Colloids and Surfaces B-Biointerfaces
Elsevier, Amsterdam., 76(1), 272-278.
https://doi.org/10.1016/j.colsurfb.2009.11.003
conv_577

Daković A, Kragović M, Rottinghaus GE, Sekulić Ž, Milićević S, Milonjić SK, Zarić S. Influence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B-1. in Colloids and Surfaces B-Biointerfaces. 2010;76(1):272-278.
doi:10.1016/j.colsurfb.2009.11.003
conv_577 .

Daković, Aleksandra, Kragović, Milan, Rottinghaus, George E., Sekulić, Živko, Milićević, Sonja, Milonjić, Slobodan K., Zarić, Snežana, "Influence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B-1" in Colloids and Surfaces B-Biointerfaces, 76, no. 1 (2010):272-278,
https://doi.org/10.1016/j.colsurfb.2009.11.003 .,
conv_577 .

TY  - JOUR
AU  - Đošić, Marija
AU  - Mišković-Stanković, Vesna
AU  - Kacarević-Popović, Z. M.
AU  - Jokić, B. M.
AU  - Bibić, N.
AU  - Mitrić, Miodrag
AU  - Milonjić, S. K.
AU  - Jančić-Heinemann, Radmila M.
AU  - Stojanović, Jovica
PY  - 2009
UR  - https://ritnms.itnms.ac.rs/handle/123456789/163
AB  - Electrochemical synthesis of nanosized monetite powder was performed galvanostatically from homogeneous Solution of Na(2)H(2)EDTA center dot 2H(2)O, NaH2PO4 and CaCl2 at a concentration relationship Ca/EDTA/PO43- of 0.25/0.25/0.15 M at current density of 137 mA cm(-2) and pH value of 5.0. The synthesized monetite powder was characterized by X-ray diffraction, infrared spectroscopy, size distribution measurements, thermogravimetric and differential thermal analysis and scanning electron microscopy. Monetite powder was electrophoretically deposited on titanium from ethanol Suspension, using constant voltage method. The deposition was performed at constant voltage between 10 and 50 V and for a constant deposition time between 1 and 30 min. The influence of the applied voltage and deposition time on the mass and morphology of monetite deposits was investigated. It was shown that monetite deposits of the highest thickness and the lowest porosity can be formed at lower applied voltage (30 V) and for longer deposition time (20 min) and then converted to hydroxyapatite.
PB  - Elsevier Science Bv, Amsterdam
T2  - Colloids and Surfaces A-Physicochemical and Engineering Aspects
T1  - Electrochemical synthesis of nanosized monetite powder and its electrophoretic deposition on titanium
EP  - 117
IS  - 1-3
SP  - 110
VL  - 341
DO  - 10.1016/j.colsurfa.2009.03.046
UR  - conv_563
ER  - 

@article{
author = "Đošić, Marija and Mišković-Stanković, Vesna and Kacarević-Popović, Z. M. and Jokić, B. M. and Bibić, N. and Mitrić, Miodrag and Milonjić, S. K. and Jančić-Heinemann, Radmila M. and Stojanović, Jovica",
year = "2009",
abstract = "Electrochemical synthesis of nanosized monetite powder was performed galvanostatically from homogeneous Solution of Na(2)H(2)EDTA center dot 2H(2)O, NaH2PO4 and CaCl2 at a concentration relationship Ca/EDTA/PO43- of 0.25/0.25/0.15 M at current density of 137 mA cm(-2) and pH value of 5.0. The synthesized monetite powder was characterized by X-ray diffraction, infrared spectroscopy, size distribution measurements, thermogravimetric and differential thermal analysis and scanning electron microscopy. Monetite powder was electrophoretically deposited on titanium from ethanol Suspension, using constant voltage method. The deposition was performed at constant voltage between 10 and 50 V and for a constant deposition time between 1 and 30 min. The influence of the applied voltage and deposition time on the mass and morphology of monetite deposits was investigated. It was shown that monetite deposits of the highest thickness and the lowest porosity can be formed at lower applied voltage (30 V) and for longer deposition time (20 min) and then converted to hydroxyapatite.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Colloids and Surfaces A-Physicochemical and Engineering Aspects",
title = "Electrochemical synthesis of nanosized monetite powder and its electrophoretic deposition on titanium",
pages = "117-110",
number = "1-3",
volume = "341",
doi = "10.1016/j.colsurfa.2009.03.046",
url = "conv_563"
}

Đošić, M., Mišković-Stanković, V., Kacarević-Popović, Z. M., Jokić, B. M., Bibić, N., Mitrić, M., Milonjić, S. K., Jančić-Heinemann, R. M.,& Stojanović, J.. (2009). Electrochemical synthesis of nanosized monetite powder and its electrophoretic deposition on titanium. in Colloids and Surfaces A-Physicochemical and Engineering Aspects
Elsevier Science Bv, Amsterdam., 341(1-3), 110-117.
https://doi.org/10.1016/j.colsurfa.2009.03.046
conv_563

Đošić M, Mišković-Stanković V, Kacarević-Popović ZM, Jokić BM, Bibić N, Mitrić M, Milonjić SK, Jančić-Heinemann RM, Stojanović J. Electrochemical synthesis of nanosized monetite powder and its electrophoretic deposition on titanium. in Colloids and Surfaces A-Physicochemical and Engineering Aspects. 2009;341(1-3):110-117.
doi:10.1016/j.colsurfa.2009.03.046
conv_563 .

Đošić, Marija, Mišković-Stanković, Vesna, Kacarević-Popović, Z. M., Jokić, B. M., Bibić, N., Mitrić, Miodrag, Milonjić, S. K., Jančić-Heinemann, Radmila M., Stojanović, Jovica, "Electrochemical synthesis of nanosized monetite powder and its electrophoretic deposition on titanium" in Colloids and Surfaces A-Physicochemical and Engineering Aspects, 341, no. 1-3 (2009):110-117,
https://doi.org/10.1016/j.colsurfa.2009.03.046 .,
conv_563 .

TY  - JOUR
AU  - Kragović, Milan
AU  - Daković, Aleksandra
AU  - Milićević, Sonja
AU  - Sekulić, Živko
AU  - Milonjić, Slobodan K.
PY  - 2009
UR  - https://ritnms.itnms.ac.rs/handle/123456789/161
AB  - U radu su prikazani rezultati modifikovanja površine prirodnog zeolita različitim količinama (2, 5 i 10 mmol M+/100 g) oktadecildimetil benzil amonijum jona (ODMBA). Dobijeni organozeoliti su označeni kao OZ-2, OZ-5 i OZ-10. Stepen jonske izmene praćen je određivanjem sadržaja oslobođenih neorganskih katjona iz zeolita. Rezultati su potvrdili da se reakcija između ODMBA i polaznog zeolita odvija mehanizmom katjonske izmene i da je izmena kvantitativna. Dobijena vrednost za tačku nultog naelektrisanja, pHpzc, za prirodni zeolit iznosi 6,8±0,1, dok pHpzc za organozeolite OZ-2, OZ-5 i OZ-10 iznosi 7,0±0,1. Značajna razlika u pHpzc nije zapažena ni kod jednog organozeolita u odnosu na polazni mineral, što ukazuje da dobijeni organozeoliti imaju slične površinske funkcionalne grupe sa sličnim kiselo-baznim karakteristikama kao i polazni zeolit.
AB  - In this paper, the results of the surface modification of natural zeolite with different amounts (2, 5 and 10 mmol M+/100g) of octadecyldimethylbenzyl ammonium ions (ODMBA) are presented. The obtained organozeolites were denoted as OZ-2, OZ-5 and OZ-10. The degree of ion exchange was followed by determination of amounts of inorganic cations released from zeolite. Results confirmed that reaction between ODMBA and starting zeolite has occurred via ion exchange mechanism. The obtained value for point of zero charge, pHpzc, of natural zeolite was 6.8±0.1, while for OZ-2, OZ-5 and OZ-10 pHpzc was 7.0±0.1. Below the pHpzc, the surfaces of materials are positive while at pH values higher than pHpzc their surfaces are negative. Compared to the pHpzc of natural zeolite, no significant differences in pHpzc was observed for all three organozeolites indicating that obtained products have similar functional groups with similar acid and basic characteristics as starting zeolite. The pHpzc was not dependent on the amount of ODMBA ions at the zeolitic surface and the value of pHpzc for all investigated sorbents is the same for all three electrolyte concentrations indicating that the pHpzc of each material is independent of the ionic strength of KNO3.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Uticaj sorpcije organskog katjona na tačku nultog naelektrisanja prirodnog zeolita
T1  - Influence of organic cations sorption on the point of zero charge of natural zeolite
EP  - 330
IS  - 4
SP  - 325
VL  - 63
DO  - 10.2298/HEMIND0904325K
UR  - conv_293
ER  - 

@article{
author = "Kragović, Milan and Daković, Aleksandra and Milićević, Sonja and Sekulić, Živko and Milonjić, Slobodan K.",
year = "2009",
abstract = "U radu su prikazani rezultati modifikovanja površine prirodnog zeolita različitim količinama (2, 5 i 10 mmol M+/100 g) oktadecildimetil benzil amonijum jona (ODMBA). Dobijeni organozeoliti su označeni kao OZ-2, OZ-5 i OZ-10. Stepen jonske izmene praćen je određivanjem sadržaja oslobođenih neorganskih katjona iz zeolita. Rezultati su potvrdili da se reakcija između ODMBA i polaznog zeolita odvija mehanizmom katjonske izmene i da je izmena kvantitativna. Dobijena vrednost za tačku nultog naelektrisanja, pHpzc, za prirodni zeolit iznosi 6,8±0,1, dok pHpzc za organozeolite OZ-2, OZ-5 i OZ-10 iznosi 7,0±0,1. Značajna razlika u pHpzc nije zapažena ni kod jednog organozeolita u odnosu na polazni mineral, što ukazuje da dobijeni organozeoliti imaju slične površinske funkcionalne grupe sa sličnim kiselo-baznim karakteristikama kao i polazni zeolit., In this paper, the results of the surface modification of natural zeolite with different amounts (2, 5 and 10 mmol M+/100g) of octadecyldimethylbenzyl ammonium ions (ODMBA) are presented. The obtained organozeolites were denoted as OZ-2, OZ-5 and OZ-10. The degree of ion exchange was followed by determination of amounts of inorganic cations released from zeolite. Results confirmed that reaction between ODMBA and starting zeolite has occurred via ion exchange mechanism. The obtained value for point of zero charge, pHpzc, of natural zeolite was 6.8±0.1, while for OZ-2, OZ-5 and OZ-10 pHpzc was 7.0±0.1. Below the pHpzc, the surfaces of materials are positive while at pH values higher than pHpzc their surfaces are negative. Compared to the pHpzc of natural zeolite, no significant differences in pHpzc was observed for all three organozeolites indicating that obtained products have similar functional groups with similar acid and basic characteristics as starting zeolite. The pHpzc was not dependent on the amount of ODMBA ions at the zeolitic surface and the value of pHpzc for all investigated sorbents is the same for all three electrolyte concentrations indicating that the pHpzc of each material is independent of the ionic strength of KNO3.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Uticaj sorpcije organskog katjona na tačku nultog naelektrisanja prirodnog zeolita, Influence of organic cations sorption on the point of zero charge of natural zeolite",
pages = "330-325",
number = "4",
volume = "63",
doi = "10.2298/HEMIND0904325K",
url = "conv_293"
}

Kragović, M., Daković, A., Milićević, S., Sekulić, Ž.,& Milonjić, S. K.. (2009). Uticaj sorpcije organskog katjona na tačku nultog naelektrisanja prirodnog zeolita. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 63(4), 325-330.
https://doi.org/10.2298/HEMIND0904325K
conv_293

Kragović M, Daković A, Milićević S, Sekulić Ž, Milonjić SK. Uticaj sorpcije organskog katjona na tačku nultog naelektrisanja prirodnog zeolita. in Hemijska industrija. 2009;63(4):325-330.
doi:10.2298/HEMIND0904325K
conv_293 .

Kragović, Milan, Daković, Aleksandra, Milićević, Sonja, Sekulić, Živko, Milonjić, Slobodan K., "Uticaj sorpcije organskog katjona na tačku nultog naelektrisanja prirodnog zeolita" in Hemijska industrija, 63, no. 4 (2009):325-330,
https://doi.org/10.2298/HEMIND0904325K .,
conv_293 .

TY  - JOUR
AU  - Đošić, Marija
AU  - Mišković-Stanković, Vesna
AU  - Milonjić, S.
AU  - Kacarević-Popović, Z. M.
AU  - Bibić, N.
AU  - Stojanović, Jovica
PY  - 2008
UR  - https://ritnms.itnms.ac.rs/handle/123456789/142
AB  - Electrochemical synthesis of hydroxyapatite powders was performed galvanostatically from homogeneous solution of Na(2)H(2)EDTA center dot 2H(2)O, NaH2PO4 and CaCl2 at a concentration relationship Ca/EDTA/PO43- of 0.25/0.25/0.15 M at current densities of 137 and 207 mA cm(-2) and pH values of 9.0 and 12.0. The hydroxyapatite powders were characterized by X-ray diffraction, size distribution measurements, transmission electron microscopy, scanning electron microscopy and thermogravimetric and differential thermal analysis. The influence of the electrochemical synthesis parameters, e.g. applied current density and pH value, on the phase composition, crystallite size, morphology and thermal characteristics of hydroxyapatite powders were investigated.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - Electrochemical synthesis and characterization of hydroxyapatite powders
EP  - 142
IS  - 1
SP  - 137
VL  - 111
DO  - 10.1016/j.matchemphys.2008.03.045
UR  - conv_545
ER  - 

@article{
author = "Đošić, Marija and Mišković-Stanković, Vesna and Milonjić, S. and Kacarević-Popović, Z. M. and Bibić, N. and Stojanović, Jovica",
year = "2008",
abstract = "Electrochemical synthesis of hydroxyapatite powders was performed galvanostatically from homogeneous solution of Na(2)H(2)EDTA center dot 2H(2)O, NaH2PO4 and CaCl2 at a concentration relationship Ca/EDTA/PO43- of 0.25/0.25/0.15 M at current densities of 137 and 207 mA cm(-2) and pH values of 9.0 and 12.0. The hydroxyapatite powders were characterized by X-ray diffraction, size distribution measurements, transmission electron microscopy, scanning electron microscopy and thermogravimetric and differential thermal analysis. The influence of the electrochemical synthesis parameters, e.g. applied current density and pH value, on the phase composition, crystallite size, morphology and thermal characteristics of hydroxyapatite powders were investigated.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "Electrochemical synthesis and characterization of hydroxyapatite powders",
pages = "142-137",
number = "1",
volume = "111",
doi = "10.1016/j.matchemphys.2008.03.045",
url = "conv_545"
}

Đošić, M., Mišković-Stanković, V., Milonjić, S., Kacarević-Popović, Z. M., Bibić, N.,& Stojanović, J.. (2008). Electrochemical synthesis and characterization of hydroxyapatite powders. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 111(1), 137-142.
https://doi.org/10.1016/j.matchemphys.2008.03.045
conv_545

Đošić M, Mišković-Stanković V, Milonjić S, Kacarević-Popović ZM, Bibić N, Stojanović J. Electrochemical synthesis and characterization of hydroxyapatite powders. in Materials Chemistry and Physics. 2008;111(1):137-142.
doi:10.1016/j.matchemphys.2008.03.045
conv_545 .

Đošić, Marija, Mišković-Stanković, Vesna, Milonjić, S., Kacarević-Popović, Z. M., Bibić, N., Stojanović, Jovica, "Electrochemical synthesis and characterization of hydroxyapatite powders" in Materials Chemistry and Physics, 111, no. 1 (2008):137-142,
https://doi.org/10.1016/j.matchemphys.2008.03.045 .,
conv_545 .