Oxide-based environmentally-friendly porous materials for genotoxic substances removal

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Oxide-based environmentally-friendly porous materials for genotoxic substances removal (en)
Порозни материјали на бази оксида у заштити животне средине од генотоксичних супстанци (sr)
Porozni materijali na bazi oksida u zaštiti životne sredine od genotoksičnih supstanci (sr_RS)
Authors

Publications

Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application

Dodevski, Vladimir; Janković, Bojan Ž.; Mirković, Miljana M.; Kragović, Milan M.; Radović, Ivana; Veljković, Filip M.; Stojmenović, Marija

(2020)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Mirković, Miljana M.
AU  - Kragović, Milan M.
AU  - Radović, Ivana
AU  - Veljković, Filip M.
AU  - Stojmenović, Marija
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8922
AB  - Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.
T2  - Thermal Science
T1  - Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application
VL  - 24
IS  - 6 (Part A)
SP  - 3807
EP  - 3821
DO  - 10.2298/TSCI190913064D
ER  - 
@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Mirković, Miljana M. and Kragović, Milan M. and Radović, Ivana and Veljković, Filip M. and Stojmenović, Marija",
year = "2020",
abstract = "Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.",
journal = "Thermal Science",
title = "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application",
volume = "24",
number = "6 (Part A)",
pages = "3807-3821",
doi = "10.2298/TSCI190913064D"
}
Dodevski, V., Janković, B. Ž., Mirković, M. M., Kragović, M. M., Radović, I., Veljković, F. M.,& Stojmenović, M.. (2020). Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science, 24(6 (Part A)), 3807-3821.
https://doi.org/10.2298/TSCI190913064D
Dodevski V, Janković BŽ, Mirković MM, Kragović MM, Radović I, Veljković FM, Stojmenović M. Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science. 2020;24(6 (Part A)):3807-3821.
doi:10.2298/TSCI190913064D .
Dodevski, Vladimir, Janković, Bojan Ž., Mirković, Miljana M., Kragović, Milan M., Radović, Ivana, Veljković, Filip M., Stojmenović, Marija, "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application" in Thermal Science, 24, no. 6 (Part A) (2020):3807-3821,
https://doi.org/10.2298/TSCI190913064D . .

Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite

Kragović, Milan M.; Stojmenović, Marija; Petrović, Jelena T.; Loredo, Jorge; Pašalić, Snežana; Nedeljković, Andrijana; Ristović, Ivica

(2019)

TY  - CONF
AU  - Kragović, Milan M.
AU  - Stojmenović, Marija
AU  - Petrović, Jelena T.
AU  - Loredo, Jorge
AU  - Pašalić, Snežana
AU  - Nedeljković, Andrijana
AU  - Ristović, Ivica
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S2351978919302513
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8198
AB  - In this paper influence of alginate encapsulation on point of zero charge (pH pzc ) and thermodynamic properties of the natural and Fe(III)- modified zeolite were investigated. The pH pzc was determined by using 0.1000 g of the samples and 50 cm 3 of the solution containing KNO 3 in concentrations of 0.0001-0.01 mol/dm 3 for initial pH (pH i ) in range between 2 and 12. The obtained pH pzc were 6.2 for natural (NZA) and 6.5 for modified zeolite encapsulated with alginate (FeA). Influence of the temperature on the adsorption of lead was investigated for different initial lead ions concentrations (180-3200 mgPb 2+ /dm 3 ) and temperatures of 30, 40 and 60 o C. For both adsorbents, adsorption of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. Also, the best fits of the experimental data were obtained by Freundlich isotherm. The temperature had positive influence adsorption and removal of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. The thermodynamic parameters (the standard free energy of adsorption, standard enthalpy and standard entropy) were also determined. The results showed that lead ions removal from aqueous solutions is much favourable for FeA then NZA. © 2019 The Authors.
C3  - Procedia Manufacturing
T1  - Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite
VL  - 32
SP  - 286
EP  - 293
DO  - 10.1016/j.promfg.2019.02.216
ER  - 
@conference{
author = "Kragović, Milan M. and Stojmenović, Marija and Petrović, Jelena T. and Loredo, Jorge and Pašalić, Snežana and Nedeljković, Andrijana and Ristović, Ivica",
year = "2019",
abstract = "In this paper influence of alginate encapsulation on point of zero charge (pH pzc ) and thermodynamic properties of the natural and Fe(III)- modified zeolite were investigated. The pH pzc was determined by using 0.1000 g of the samples and 50 cm 3 of the solution containing KNO 3 in concentrations of 0.0001-0.01 mol/dm 3 for initial pH (pH i ) in range between 2 and 12. The obtained pH pzc were 6.2 for natural (NZA) and 6.5 for modified zeolite encapsulated with alginate (FeA). Influence of the temperature on the adsorption of lead was investigated for different initial lead ions concentrations (180-3200 mgPb 2+ /dm 3 ) and temperatures of 30, 40 and 60 o C. For both adsorbents, adsorption of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. Also, the best fits of the experimental data were obtained by Freundlich isotherm. The temperature had positive influence adsorption and removal of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. The thermodynamic parameters (the standard free energy of adsorption, standard enthalpy and standard entropy) were also determined. The results showed that lead ions removal from aqueous solutions is much favourable for FeA then NZA. © 2019 The Authors.",
journal = "Procedia Manufacturing",
title = "Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite",
volume = "32",
pages = "286-293",
doi = "10.1016/j.promfg.2019.02.216"
}
Kragović, M. M., Stojmenović, M., Petrović, J. T., Loredo, J., Pašalić, S., Nedeljković, A.,& Ristović, I.. (2019). Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite. in Procedia Manufacturing, 32, 286-293.
https://doi.org/10.1016/j.promfg.2019.02.216
Kragović MM, Stojmenović M, Petrović JT, Loredo J, Pašalić S, Nedeljković A, Ristović I. Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite. in Procedia Manufacturing. 2019;32:286-293.
doi:10.1016/j.promfg.2019.02.216 .
Kragović, Milan M., Stojmenović, Marija, Petrović, Jelena T., Loredo, Jorge, Pašalić, Snežana, Nedeljković, Andrijana, Ristović, Ivica, "Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite" in Procedia Manufacturing, 32 (2019):286-293,
https://doi.org/10.1016/j.promfg.2019.02.216 . .
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In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal

Vasiljević-Nedić, Bojana; Obradović, Milena; Bajuk-Bogdanović, Danica V.; Milojević-Rakić, Maja; Jovanović, Zoran M.; Gavrilov, Nemanja M.; Holclajtner-Antunović, Ivanka D.

(2019)

TY  - JOUR
AU  - Vasiljević-Nedić, Bojana
AU  - Obradović, Milena
AU  - Bajuk-Bogdanović, Danica V.
AU  - Milojević-Rakić, Maja
AU  - Jovanović, Zoran M.
AU  - Gavrilov, Nemanja M.
AU  - Holclajtner-Antunović, Ivanka D.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S1001074218314682
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8217
AB  - Potassium tungstophosphate is supported on BEA zeolite by in situ synthesis for glyphosate removal. Spectroscopic measurements identified hydrogen bonding as a primal interaction of potassium salt and BEA zeolite. Composites are evaluated for glyphosate herbicide removal and adsorption process is analyzed using two isotherm models. Obtained adsorption capacities for all prepared composites lay between 45.2 and 92.2 mg of glyphosate per gram of investigated composite. Suspension acidity revealed that glyphosate is adsorbed mainly in the zwitter-ion form at the composite surface while the amount of potassium salt in the composites is crucial for the adsorption application. Exceptional adsorption behavior is postulated to come from a high degree of homogeneity among surface active sites which is confirmed by different experimental methods. Temperature programmed desorption of glyphosate coupled with mass spectrometer detected one broad, high-temperature peak which represents overlapped desorption processes from active sights of similar strength. Introduction of potassium tungstophosphate affects active sites present in BEA zeolite for glyphosate desorption and significantly increases the amount of adsorbed pesticide in comparison to BEA zeolite. Supporting of potassium tungstophosphate on BEA zeolite via in situ synthesis procedure enables the formation of highly efficient adsorbents and revealed their perspective environmental application. © 2019
T2  - Journal of Environmental Sciences
T1  - In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal
VL  - 81
SP  - 136
EP  - 147
DO  - 10.1016/j.jes.2019.01.018
ER  - 
@article{
author = "Vasiljević-Nedić, Bojana and Obradović, Milena and Bajuk-Bogdanović, Danica V. and Milojević-Rakić, Maja and Jovanović, Zoran M. and Gavrilov, Nemanja M. and Holclajtner-Antunović, Ivanka D.",
year = "2019",
abstract = "Potassium tungstophosphate is supported on BEA zeolite by in situ synthesis for glyphosate removal. Spectroscopic measurements identified hydrogen bonding as a primal interaction of potassium salt and BEA zeolite. Composites are evaluated for glyphosate herbicide removal and adsorption process is analyzed using two isotherm models. Obtained adsorption capacities for all prepared composites lay between 45.2 and 92.2 mg of glyphosate per gram of investigated composite. Suspension acidity revealed that glyphosate is adsorbed mainly in the zwitter-ion form at the composite surface while the amount of potassium salt in the composites is crucial for the adsorption application. Exceptional adsorption behavior is postulated to come from a high degree of homogeneity among surface active sites which is confirmed by different experimental methods. Temperature programmed desorption of glyphosate coupled with mass spectrometer detected one broad, high-temperature peak which represents overlapped desorption processes from active sights of similar strength. Introduction of potassium tungstophosphate affects active sites present in BEA zeolite for glyphosate desorption and significantly increases the amount of adsorbed pesticide in comparison to BEA zeolite. Supporting of potassium tungstophosphate on BEA zeolite via in situ synthesis procedure enables the formation of highly efficient adsorbents and revealed their perspective environmental application. © 2019",
journal = "Journal of Environmental Sciences",
title = "In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal",
volume = "81",
pages = "136-147",
doi = "10.1016/j.jes.2019.01.018"
}
Vasiljević-Nedić, B., Obradović, M., Bajuk-Bogdanović, D. V., Milojević-Rakić, M., Jovanović, Z. M., Gavrilov, N. M.,& Holclajtner-Antunović, I. D.. (2019). In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal. in Journal of Environmental Sciences, 81, 136-147.
https://doi.org/10.1016/j.jes.2019.01.018
Vasiljević-Nedić B, Obradović M, Bajuk-Bogdanović DV, Milojević-Rakić M, Jovanović ZM, Gavrilov NM, Holclajtner-Antunović ID. In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal. in Journal of Environmental Sciences. 2019;81:136-147.
doi:10.1016/j.jes.2019.01.018 .
Vasiljević-Nedić, Bojana, Obradović, Milena, Bajuk-Bogdanović, Danica V., Milojević-Rakić, Maja, Jovanović, Zoran M., Gavrilov, Nemanja M., Holclajtner-Antunović, Ivanka D., "In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal" in Journal of Environmental Sciences, 81 (2019):136-147,
https://doi.org/10.1016/j.jes.2019.01.018 . .
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9
10

Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions

Kragović, Milan M.; Pašalić, Snežana; Markovic, Marija; Petrović, Marija; Nedeljkovic, Blagoje; Momčilović, Miloš; Stojmenović, Marija

(2018)

TY  - JOUR
AU  - Kragović, Milan M.
AU  - Pašalić, Snežana
AU  - Markovic, Marija
AU  - Petrović, Marija
AU  - Nedeljkovic, Blagoje
AU  - Momčilović, Miloš
AU  - Stojmenović, Marija
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1946
AB  - In present paper, the influence of the initial pH and concentration of Pb2+ on its adsorption by the natural (NZA) and Fe(III)-modified zeolite-alginate beads (FeA) was studied. Results showed that modification of the starting materials have a positive effect on their adsorption capacities (102 and 136 mg/g for the NZA and FeA, respectively). After encapsulation, the mechanism of lead adsorption by both adsorbents was changed and ion exchange dominates. The best adsorption was achieved for initial pH GT 3.8. Cation exchange capacity, structural properties, and hydrophobicity of samples were also determined, and the presence of the alginate has no significant influence on investigated properties of samples. Experiments on wastewater from tailings of lead and zinc mine Grot, Serbia, showed that after treatment with both adsorbents, the content of the most abundant heavy metals (Pb, Zn, Hg, and Mn) significantly decreased.
T2  - Minerals
T1  - Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions
VL  - 8
IS  - 1
DO  - 10.3390/min8010011
ER  - 
@article{
author = "Kragović, Milan M. and Pašalić, Snežana and Markovic, Marija and Petrović, Marija and Nedeljkovic, Blagoje and Momčilović, Miloš and Stojmenović, Marija",
year = "2018",
abstract = "In present paper, the influence of the initial pH and concentration of Pb2+ on its adsorption by the natural (NZA) and Fe(III)-modified zeolite-alginate beads (FeA) was studied. Results showed that modification of the starting materials have a positive effect on their adsorption capacities (102 and 136 mg/g for the NZA and FeA, respectively). After encapsulation, the mechanism of lead adsorption by both adsorbents was changed and ion exchange dominates. The best adsorption was achieved for initial pH GT 3.8. Cation exchange capacity, structural properties, and hydrophobicity of samples were also determined, and the presence of the alginate has no significant influence on investigated properties of samples. Experiments on wastewater from tailings of lead and zinc mine Grot, Serbia, showed that after treatment with both adsorbents, the content of the most abundant heavy metals (Pb, Zn, Hg, and Mn) significantly decreased.",
journal = "Minerals",
title = "Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions",
volume = "8",
number = "1",
doi = "10.3390/min8010011"
}
Kragović, M. M., Pašalić, S., Markovic, M., Petrović, M., Nedeljkovic, B., Momčilović, M.,& Stojmenović, M.. (2018). Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions. in Minerals, 8(1).
https://doi.org/10.3390/min8010011
Kragović MM, Pašalić S, Markovic M, Petrović M, Nedeljkovic B, Momčilović M, Stojmenović M. Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions. in Minerals. 2018;8(1).
doi:10.3390/min8010011 .
Kragović, Milan M., Pašalić, Snežana, Markovic, Marija, Petrović, Marija, Nedeljkovic, Blagoje, Momčilović, Miloš, Stojmenović, Marija, "Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions" in Minerals, 8, no. 1 (2018),
https://doi.org/10.3390/min8010011 . .
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10
21

Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+

Hercigonja, Radmila V.; Vranješ-Đurić, Sanja; Mirković, Marija D.; Marković, Bojana M.; Maksin, Danijela D.; Marković, Bojana N.; Nastasović, Aleksandra B.

(2018)

TY  - JOUR
AU  - Hercigonja, Radmila V.
AU  - Vranješ-Đurić, Sanja
AU  - Mirković, Marija D.
AU  - Marković, Bojana M.
AU  - Maksin, Danijela D.
AU  - Marković, Bojana N.
AU  - Nastasović, Aleksandra B.
PY  - 2018
UR  - http://link.springer.com/10.1007/s10967-018-5893-2
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7729
AB  - The adsorption properties of two zeolite types, faujasite (NaY, ZnY, CoY) and LTA-4A zeolite (NaA, ZnA, CoA), towards technetium were studied in batch static experiments. The Si/Al ratio, acidity, dealumination, chargebalance cations of zeolite, contact time and temperature determined the adsorption efficiency. The maximum removal efficiency of 98.8% and Kdvalue (2.06 × 10−4 cm3 g−1) was achieved using CoY (zeolite type Y). The kinetics of technetium adsorption followed the pseudo-second order model. The TcO2adsorption is mainly due to the hydrogen bonds between protons of the zeolitic structural OH groups (Bronsted acid center) and oxygen from the TcO2−.
T2  - Journal of Radioanalytical and Nuclear Chemistry
T1  - Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+
VL  - 317
IS  - 1
SP  - 215
EP  - 225
DO  - 10.1007/s10967-018-5893-2
ER  - 
@article{
author = "Hercigonja, Radmila V. and Vranješ-Đurić, Sanja and Mirković, Marija D. and Marković, Bojana M. and Maksin, Danijela D. and Marković, Bojana N. and Nastasović, Aleksandra B.",
year = "2018",
abstract = "The adsorption properties of two zeolite types, faujasite (NaY, ZnY, CoY) and LTA-4A zeolite (NaA, ZnA, CoA), towards technetium were studied in batch static experiments. The Si/Al ratio, acidity, dealumination, chargebalance cations of zeolite, contact time and temperature determined the adsorption efficiency. The maximum removal efficiency of 98.8% and Kdvalue (2.06 × 10−4 cm3 g−1) was achieved using CoY (zeolite type Y). The kinetics of technetium adsorption followed the pseudo-second order model. The TcO2adsorption is mainly due to the hydrogen bonds between protons of the zeolitic structural OH groups (Bronsted acid center) and oxygen from the TcO2−.",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
title = "Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+",
volume = "317",
number = "1",
pages = "215-225",
doi = "10.1007/s10967-018-5893-2"
}
Hercigonja, R. V., Vranješ-Đurić, S., Mirković, M. D., Marković, B. M., Maksin, D. D., Marković, B. N.,& Nastasović, A. B.. (2018). Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+. in Journal of Radioanalytical and Nuclear Chemistry, 317(1), 215-225.
https://doi.org/10.1007/s10967-018-5893-2
Hercigonja RV, Vranješ-Đurić S, Mirković MD, Marković BM, Maksin DD, Marković BN, Nastasović AB. Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+. in Journal of Radioanalytical and Nuclear Chemistry. 2018;317(1):215-225.
doi:10.1007/s10967-018-5893-2 .
Hercigonja, Radmila V., Vranješ-Đurić, Sanja, Mirković, Marija D., Marković, Bojana M., Maksin, Danijela D., Marković, Bojana N., Nastasović, Aleksandra B., "Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+" in Journal of Radioanalytical and Nuclear Chemistry, 317, no. 1 (2018):215-225,
https://doi.org/10.1007/s10967-018-5893-2 . .
1
2

Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X

Vasić, Milica M.; Čebela, Maria; Pašti, Igor A.; Amaral, Luis; Hercigonja, Radmila V.; Santos, Diogo M. F.; Šljukić, Biljana

(2018)

TY  - JOUR
AU  - Vasić, Milica M.
AU  - Čebela, Maria
AU  - Pašti, Igor A.
AU  - Amaral, Luis
AU  - Hercigonja, Radmila V.
AU  - Santos, Diogo M. F.
AU  - Šljukić, Biljana
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1943
AB  - Palladium ion-exchanged zeolite X (PdX) was prepared by zeolite impregnation with palladium acetylacetonate, followed by thermal degradation of the salt. PdX was characterised using SEM-EDS, ICP-OES and XRD. Analysis revealed presence of 7.78 wt.% of Pd in the form of PdO. Subsequently, PdX was tested for hydrogen evolution reaction (HER) in alkaline medium using linear scan voltammetry, chronoamperometry and electrochemical impedance spectroscopy measurements. The influence of addition of carbon black on the materials catalytic performance was also investigated. The HER kinetic parameters, including Tafel slope, exchange current density and activation energy, were determined. In order to provide atomic-level insights, experimental results were complemented by density functional theory calculations. It is suggested that favourable hydrogen adsorption energetics on PdO is responsible for efficient HER catalysis by this novel electrocatalyst. (c) 2017 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X
VL  - 259
SP  - 882
EP  - 892
DO  - 10.1016/j.electacta.2017.11.020
ER  - 
@article{
author = "Vasić, Milica M. and Čebela, Maria and Pašti, Igor A. and Amaral, Luis and Hercigonja, Radmila V. and Santos, Diogo M. F. and Šljukić, Biljana",
year = "2018",
abstract = "Palladium ion-exchanged zeolite X (PdX) was prepared by zeolite impregnation with palladium acetylacetonate, followed by thermal degradation of the salt. PdX was characterised using SEM-EDS, ICP-OES and XRD. Analysis revealed presence of 7.78 wt.% of Pd in the form of PdO. Subsequently, PdX was tested for hydrogen evolution reaction (HER) in alkaline medium using linear scan voltammetry, chronoamperometry and electrochemical impedance spectroscopy measurements. The influence of addition of carbon black on the materials catalytic performance was also investigated. The HER kinetic parameters, including Tafel slope, exchange current density and activation energy, were determined. In order to provide atomic-level insights, experimental results were complemented by density functional theory calculations. It is suggested that favourable hydrogen adsorption energetics on PdO is responsible for efficient HER catalysis by this novel electrocatalyst. (c) 2017 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X",
volume = "259",
pages = "882-892",
doi = "10.1016/j.electacta.2017.11.020"
}
Vasić, M. M., Čebela, M., Pašti, I. A., Amaral, L., Hercigonja, R. V., Santos, D. M. F.,& Šljukić, B.. (2018). Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X. in Electrochimica Acta, 259, 882-892.
https://doi.org/10.1016/j.electacta.2017.11.020
Vasić MM, Čebela M, Pašti IA, Amaral L, Hercigonja RV, Santos DMF, Šljukić B. Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X. in Electrochimica Acta. 2018;259:882-892.
doi:10.1016/j.electacta.2017.11.020 .
Vasić, Milica M., Čebela, Maria, Pašti, Igor A., Amaral, Luis, Hercigonja, Radmila V., Santos, Diogo M. F., Šljukić, Biljana, "Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X" in Electrochimica Acta, 259 (2018):882-892,
https://doi.org/10.1016/j.electacta.2017.11.020 . .
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22

Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions

Marković, Bojana M.; Stefanovic, Ivan S.; Hercigonja, Radmila V.; Pergal, Marija V.; Marković, Jelena P.; Onjia, Antonije E.; Nastasović, Aleksandra B.

(2017)

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Stefanovic, Ivan S.
AU  - Hercigonja, Radmila V.
AU  - Pergal, Marija V.
AU  - Marković, Jelena P.
AU  - Onjia, Antonije E.
AU  - Nastasović, Aleksandra B.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1501
AB  - Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed. (c) 2016 Society of Chemical Industry
T2  - Polymer International
T1  - Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions
VL  - 66
IS  - 5
SP  - 679
EP  - 689
DO  - 10.1002/pi.5306
ER  - 
@article{
author = "Marković, Bojana M. and Stefanovic, Ivan S. and Hercigonja, Radmila V. and Pergal, Marija V. and Marković, Jelena P. and Onjia, Antonije E. and Nastasović, Aleksandra B.",
year = "2017",
abstract = "Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed. (c) 2016 Society of Chemical Industry",
journal = "Polymer International",
title = "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions",
volume = "66",
number = "5",
pages = "679-689",
doi = "10.1002/pi.5306"
}
Marković, B. M., Stefanovic, I. S., Hercigonja, R. V., Pergal, M. V., Marković, J. P., Onjia, A. E.,& Nastasović, A. B.. (2017). Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International, 66(5), 679-689.
https://doi.org/10.1002/pi.5306
Marković BM, Stefanovic IS, Hercigonja RV, Pergal MV, Marković JP, Onjia AE, Nastasović AB. Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International. 2017;66(5):679-689.
doi:10.1002/pi.5306 .
Marković, Bojana M., Stefanovic, Ivan S., Hercigonja, Radmila V., Pergal, Marija V., Marković, Jelena P., Onjia, Antonije E., Nastasović, Aleksandra B., "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions" in Polymer International, 66, no. 5 (2017):679-689,
https://doi.org/10.1002/pi.5306 . .
6
6
6

Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure

Čebela, Maria; Janković, Bojan Ž.; Hercigonja, Radmila V.; Lukić, Miodrag J.; Dohčević-Mitrović, Zorana ; Milivojević, Dušan; Matović, Branko

(2016)

TY  - JOUR
AU  - Čebela, Maria
AU  - Janković, Bojan Ž.
AU  - Hercigonja, Radmila V.
AU  - Lukić, Miodrag J.
AU  - Dohčević-Mitrović, Zorana 
AU  - Milivojević, Dušan
AU  - Matović, Branko
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1411
AB  - In this paper, bismuth ferrite (BFO) particles synthesized by controlled hydrothermal process, where the particles of small sizes and with high purity were obtained. Structural analysis showed that non-annealed powder can be perfectly fitted to rhombohedral space group R3c and contains a very small amount of secondary phase, whereas the final product (annealed at 800 degrees C) represents single-phase perovskite powder with high crystallinity. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been proposed that existence of Fe3+ - O-V defect complex could be generated at elevated temperatures followed by formation of trivalent Fe ions, which intensely provide local 3d moments.
T2  - Processing and Application of Ceramics
T1  - Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure
VL  - 10
IS  - 4
SP  - 201
EP  - 208
DO  - 10.2298/PAC1604201C
ER  - 
@article{
author = "Čebela, Maria and Janković, Bojan Ž. and Hercigonja, Radmila V. and Lukić, Miodrag J. and Dohčević-Mitrović, Zorana  and Milivojević, Dušan and Matović, Branko",
year = "2016",
abstract = "In this paper, bismuth ferrite (BFO) particles synthesized by controlled hydrothermal process, where the particles of small sizes and with high purity were obtained. Structural analysis showed that non-annealed powder can be perfectly fitted to rhombohedral space group R3c and contains a very small amount of secondary phase, whereas the final product (annealed at 800 degrees C) represents single-phase perovskite powder with high crystallinity. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been proposed that existence of Fe3+ - O-V defect complex could be generated at elevated temperatures followed by formation of trivalent Fe ions, which intensely provide local 3d moments.",
journal = "Processing and Application of Ceramics",
title = "Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure",
volume = "10",
number = "4",
pages = "201-208",
doi = "10.2298/PAC1604201C"
}
Čebela, M., Janković, B. Ž., Hercigonja, R. V., Lukić, M. J., Dohčević-Mitrović, Z., Milivojević, D.,& Matović, B.. (2016). Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure. in Processing and Application of Ceramics, 10(4), 201-208.
https://doi.org/10.2298/PAC1604201C
Čebela M, Janković BŽ, Hercigonja RV, Lukić MJ, Dohčević-Mitrović Z, Milivojević D, Matović B. Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure. in Processing and Application of Ceramics. 2016;10(4):201-208.
doi:10.2298/PAC1604201C .
Čebela, Maria, Janković, Bojan Ž., Hercigonja, Radmila V., Lukić, Miodrag J., Dohčević-Mitrović, Zorana , Milivojević, Dušan, Matović, Branko, "Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure" in Processing and Application of Ceramics, 10, no. 4 (2016):201-208,
https://doi.org/10.2298/PAC1604201C . .
7
6
7

Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing

Jovic, Aleksandar; Đorđević, Aleksandar R.; Čebela, Maria; Stojković-Simatović, Ivana; Hercigonja, Radmila V.; Šljukić, Biljana

(2016)

TY  - JOUR
AU  - Jovic, Aleksandar
AU  - Đorđević, Aleksandar R.
AU  - Čebela, Maria
AU  - Stojković-Simatović, Ivana
AU  - Hercigonja, Radmila V.
AU  - Šljukić, Biljana
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1263
AB  - Electrodes based on composites of zeolites with carbonized polyaniline prepared in the presence of 5-sulfosalicylic acid are evaluated for both qualitative and quantitative determination of phenols in aqueous solutions. Zeolites used included NaX and NaY, as well as their transition metal (Mn and Cu) cation-exchanged forms, and they were all characterized usingXRPD, FTIR and SEM. Cyclic voltammetry was used to study composites electrochemical response in the presence of p-nitrophenol, phenol and 5-aminophenol in acidic, neutral and al- kaline media. Linear dependence of current on p-nitrophenol concentration in acidic media was obtained in 0.11 mM concentration range. The comparative evaluation of the electrochemical response of NaX/carbonized polyaniline composite and its individual components revealed significantly lower limit of detection obtained using composite electrode (1.27 mu M) compared to that obtained using pure zeolite (135 mu M) or pure carbonized polyaniline (94.5 mu M) electrode. Composite electrode gave response to p-nitrophenol presence in neutral media as well, but it quickly disappeared with continuous scanning, while no clear response could be seen in highly alkaline media. Thus, this work demonstrates benefits of using novel composite based on zeolites and carbonized polyaniline for sensing of phenols in acidic aqueous solutions. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Journal of Electroanalytical Chemistry
T1  - Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing
VL  - 778
SP  - 137
EP  - 147
DO  - 10.1016/j.jelechem.2016.08.025
ER  - 
@article{
author = "Jovic, Aleksandar and Đorđević, Aleksandar R. and Čebela, Maria and Stojković-Simatović, Ivana and Hercigonja, Radmila V. and Šljukić, Biljana",
year = "2016",
abstract = "Electrodes based on composites of zeolites with carbonized polyaniline prepared in the presence of 5-sulfosalicylic acid are evaluated for both qualitative and quantitative determination of phenols in aqueous solutions. Zeolites used included NaX and NaY, as well as their transition metal (Mn and Cu) cation-exchanged forms, and they were all characterized usingXRPD, FTIR and SEM. Cyclic voltammetry was used to study composites electrochemical response in the presence of p-nitrophenol, phenol and 5-aminophenol in acidic, neutral and al- kaline media. Linear dependence of current on p-nitrophenol concentration in acidic media was obtained in 0.11 mM concentration range. The comparative evaluation of the electrochemical response of NaX/carbonized polyaniline composite and its individual components revealed significantly lower limit of detection obtained using composite electrode (1.27 mu M) compared to that obtained using pure zeolite (135 mu M) or pure carbonized polyaniline (94.5 mu M) electrode. Composite electrode gave response to p-nitrophenol presence in neutral media as well, but it quickly disappeared with continuous scanning, while no clear response could be seen in highly alkaline media. Thus, this work demonstrates benefits of using novel composite based on zeolites and carbonized polyaniline for sensing of phenols in acidic aqueous solutions. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Journal of Electroanalytical Chemistry",
title = "Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing",
volume = "778",
pages = "137-147",
doi = "10.1016/j.jelechem.2016.08.025"
}
Jovic, A., Đorđević, A. R., Čebela, M., Stojković-Simatović, I., Hercigonja, R. V.,& Šljukić, B.. (2016). Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing. in Journal of Electroanalytical Chemistry, 778, 137-147.
https://doi.org/10.1016/j.jelechem.2016.08.025
Jovic A, Đorđević AR, Čebela M, Stojković-Simatović I, Hercigonja RV, Šljukić B. Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing. in Journal of Electroanalytical Chemistry. 2016;778:137-147.
doi:10.1016/j.jelechem.2016.08.025 .
Jovic, Aleksandar, Đorđević, Aleksandar R., Čebela, Maria, Stojković-Simatović, Ivana, Hercigonja, Radmila V., Šljukić, Biljana, "Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing" in Journal of Electroanalytical Chemistry, 778 (2016):137-147,
https://doi.org/10.1016/j.jelechem.2016.08.025 . .
11
12
12

The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions

Jevtic, Sanja; Arcon, Iztok; Recnik, Aleksander; Babić, Biljana M.; Mazaj, Matjai; Pavlović, Jelena; Matijasevic, Danka; Niksic, Miomir; Rajic, Nevenka

(2014)

TY  - JOUR
AU  - Jevtic, Sanja
AU  - Arcon, Iztok
AU  - Recnik, Aleksander
AU  - Babić, Biljana M.
AU  - Mazaj, Matjai
AU  - Pavlović, Jelena
AU  - Matijasevic, Danka
AU  - Niksic, Miomir
AU  - Rajic, Nevenka
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/82
AB  - Se(IV) and Se(VI) anions are the dominant species of Se existing in aqueous systems. In this study, the iron(III)-modified natural zeolitic tuff (Fe-CLI) from the Serbian deposit Zlatokop has been investigated as an adsorbent for the Se oxyanions. Fe-CLI shows adsorption activity for both Se(IV) and Se(VI) which decreases with increasing pH. The adsorption capacity of Fe-CLI is found to be higher for Se(IV) than for Se(VI). Kinetics data follow the pseudo-second-order model and the obtained parameters k indicate that the rates of adsorption and desorption are higher for Se(VI). Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) analyses reveal that Se is bound at the zeolite surface forming not only the Se-O-Fe but also Se-O-Si bonds. The adsorption mechanism depends of the type of oxo ions. Samples of zeolitic tuff which contain Se were tested as soil supplements for the cultivation of Pleurotus ostreatus mushrooms. The fungus adsorbed the inorganic Se from zeolitic tuff transforming it to a more valuable organically bound form. (C) 2014 Published by Elsevier Inc.
T2  - Microporous and Mesoporous Materials
T1  - The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions
VL  - 197
SP  - 92
EP  - 100
DO  - 10.1016/j.micromeso.2014.06.008
ER  - 
@article{
author = "Jevtic, Sanja and Arcon, Iztok and Recnik, Aleksander and Babić, Biljana M. and Mazaj, Matjai and Pavlović, Jelena and Matijasevic, Danka and Niksic, Miomir and Rajic, Nevenka",
year = "2014",
abstract = "Se(IV) and Se(VI) anions are the dominant species of Se existing in aqueous systems. In this study, the iron(III)-modified natural zeolitic tuff (Fe-CLI) from the Serbian deposit Zlatokop has been investigated as an adsorbent for the Se oxyanions. Fe-CLI shows adsorption activity for both Se(IV) and Se(VI) which decreases with increasing pH. The adsorption capacity of Fe-CLI is found to be higher for Se(IV) than for Se(VI). Kinetics data follow the pseudo-second-order model and the obtained parameters k indicate that the rates of adsorption and desorption are higher for Se(VI). Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) analyses reveal that Se is bound at the zeolite surface forming not only the Se-O-Fe but also Se-O-Si bonds. The adsorption mechanism depends of the type of oxo ions. Samples of zeolitic tuff which contain Se were tested as soil supplements for the cultivation of Pleurotus ostreatus mushrooms. The fungus adsorbed the inorganic Se from zeolitic tuff transforming it to a more valuable organically bound form. (C) 2014 Published by Elsevier Inc.",
journal = "Microporous and Mesoporous Materials",
title = "The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions",
volume = "197",
pages = "92-100",
doi = "10.1016/j.micromeso.2014.06.008"
}
Jevtic, S., Arcon, I., Recnik, A., Babić, B. M., Mazaj, M., Pavlović, J., Matijasevic, D., Niksic, M.,& Rajic, N.. (2014). The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions. in Microporous and Mesoporous Materials, 197, 92-100.
https://doi.org/10.1016/j.micromeso.2014.06.008
Jevtic S, Arcon I, Recnik A, Babić BM, Mazaj M, Pavlović J, Matijasevic D, Niksic M, Rajic N. The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions. in Microporous and Mesoporous Materials. 2014;197:92-100.
doi:10.1016/j.micromeso.2014.06.008 .
Jevtic, Sanja, Arcon, Iztok, Recnik, Aleksander, Babić, Biljana M., Mazaj, Matjai, Pavlović, Jelena, Matijasevic, Danka, Niksic, Miomir, Rajic, Nevenka, "The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions" in Microporous and Mesoporous Materials, 197 (2014):92-100,
https://doi.org/10.1016/j.micromeso.2014.06.008 . .
14
11
14

Biomimetic synthesis and properties of cellular SiC

Gordić, Milan V.; Bučevac, Dušan; Ružić, Jovana; Gavrilovic, Suzana; Hercigonja, Radmila V.; Stankovic, Miroslav; Matović, Branko

(2014)

TY  - JOUR
AU  - Gordić, Milan V.
AU  - Bučevac, Dušan
AU  - Ružić, Jovana
AU  - Gavrilovic, Suzana
AU  - Hercigonja, Radmila V.
AU  - Stankovic, Miroslav
AU  - Matović, Branko
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5841
AB  - Biomorphous beta-SiC ceramics were produced from several species of wood such as ash, wild cherry, black alder, Persian walnut, sessile oak and European hornbeam. The wood was pyrolysed, impregnated with tetraethyl orthosilicate (TEOS) sol in repeated cycles and thermally treated at 1800 degrees C in vacuum. Four specimen groups included charcoal and three groups with 1, 3 and 5 cycles of impregnation were analyzed. Flexural and compressional strength of charcoal and woodlike SiC ceramics were measured using three-point and compression testing in different directions. Experimental results showed that mechanical properties of woodceramics were improved by repeating of impregnation cycles. Porosity measurement, dilatometric analysis, XRD and SEM analysis were used to study the macroscopical and microscopical properties of the resulting biomorphic SiC ceramics. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Biomimetic synthesis and properties of cellular SiC
VL  - 40
IS  - 2
SP  - 3699
EP  - 3705
DO  - 10.1016/j.ceramint.2013.09.054
ER  - 
@article{
author = "Gordić, Milan V. and Bučevac, Dušan and Ružić, Jovana and Gavrilovic, Suzana and Hercigonja, Radmila V. and Stankovic, Miroslav and Matović, Branko",
year = "2014",
abstract = "Biomorphous beta-SiC ceramics were produced from several species of wood such as ash, wild cherry, black alder, Persian walnut, sessile oak and European hornbeam. The wood was pyrolysed, impregnated with tetraethyl orthosilicate (TEOS) sol in repeated cycles and thermally treated at 1800 degrees C in vacuum. Four specimen groups included charcoal and three groups with 1, 3 and 5 cycles of impregnation were analyzed. Flexural and compressional strength of charcoal and woodlike SiC ceramics were measured using three-point and compression testing in different directions. Experimental results showed that mechanical properties of woodceramics were improved by repeating of impregnation cycles. Porosity measurement, dilatometric analysis, XRD and SEM analysis were used to study the macroscopical and microscopical properties of the resulting biomorphic SiC ceramics. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Biomimetic synthesis and properties of cellular SiC",
volume = "40",
number = "2",
pages = "3699-3705",
doi = "10.1016/j.ceramint.2013.09.054"
}
Gordić, M. V., Bučevac, D., Ružić, J., Gavrilovic, S., Hercigonja, R. V., Stankovic, M.,& Matović, B.. (2014). Biomimetic synthesis and properties of cellular SiC. in Ceramics International, 40(2), 3699-3705.
https://doi.org/10.1016/j.ceramint.2013.09.054
Gordić MV, Bučevac D, Ružić J, Gavrilovic S, Hercigonja RV, Stankovic M, Matović B. Biomimetic synthesis and properties of cellular SiC. in Ceramics International. 2014;40(2):3699-3705.
doi:10.1016/j.ceramint.2013.09.054 .
Gordić, Milan V., Bučevac, Dušan, Ružić, Jovana, Gavrilovic, Suzana, Hercigonja, Radmila V., Stankovic, Miroslav, Matović, Branko, "Biomimetic synthesis and properties of cellular SiC" in Ceramics International, 40, no. 2 (2014):3699-3705,
https://doi.org/10.1016/j.ceramint.2013.09.054 . .
10
8
9

Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent

Dakovic, Aleksandra; Kragović, Milan M.; Rottinghaus, George E.; Ledoux, David R.; Butkeraitis, Paula; Vojislavljevic, Dubravka Z.; Zarić, Snežana D.; Stamenić, Ljubisav

(2012)

TY  - JOUR
AU  - Dakovic, Aleksandra
AU  - Kragović, Milan M.
AU  - Rottinghaus, George E.
AU  - Ledoux, David R.
AU  - Butkeraitis, Paula
AU  - Vojislavljevic, Dubravka Z.
AU  - Zarić, Snežana D.
AU  - Stamenić, Ljubisav
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4363
AB  - A zinc-exchanged montmorillonite (Zn-MONT) was prepared from a natural montmorillonite (MONT) and the adsorption of aflatoxin B-1 (AFB(1)) was investigated at pH 3 and 7. Characterization of Zn-MONT was done by determination of chemical composition, the point of the zero charge (pH(pzc)), thermal (DTA/TGA/DTG) and X-ray powder diffraction (XRPD) analysis. Adsorption of AFB(1) (C-0 = 4 ppm) by Zn-MONT, at different solid/liquid ratios (10, 1 and 0.5 g L-1), at pH 3 or 7, showed that its adsorption was high (over 96%) and independent of pH, similar to MONT. No desorption of AFB(1) from MONT-AFB(1) and Zn-MONT-AFB(1) complexes occurred at pH 6.5, suggesting strong binding of AFB(1) by both adsorbents. Furthermore, AFB(1) adsorption by Zn-MONT followed a nonlinear (Langmuir) type of isotherm at pH 3 with a calculated maximum capacity of 60.17 mg g(-1). The stability of MONT-AFB(1) and Zn-MONT-AFB(1) complexes was evaluated by calculating the binding energies between AFB(1) and metal cations using quantum chemical methods. The evaluated interaction energies of AFB(1) with hydrated Zn2+, Mg2+, and Ca2+ cations showed that the strongest interaction was the interaction of the Zn2+ system, -70.2 kcal mol(-1), whereas energies for Mg-2 and Ca2+ systems were -68.8 and -62.9 kcal mol(-1), respectively. The results indicate that Zn-MONT can be suitable for potential practical application as both, an antibacterial and an aflatoxin binding agent. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent
VL  - 137
IS  - 1
SP  - 213
EP  - 220
DO  - 10.1016/j.matchemphys.2012.09.010
ER  - 
@article{
author = "Dakovic, Aleksandra and Kragović, Milan M. and Rottinghaus, George E. and Ledoux, David R. and Butkeraitis, Paula and Vojislavljevic, Dubravka Z. and Zarić, Snežana D. and Stamenić, Ljubisav",
year = "2012",
abstract = "A zinc-exchanged montmorillonite (Zn-MONT) was prepared from a natural montmorillonite (MONT) and the adsorption of aflatoxin B-1 (AFB(1)) was investigated at pH 3 and 7. Characterization of Zn-MONT was done by determination of chemical composition, the point of the zero charge (pH(pzc)), thermal (DTA/TGA/DTG) and X-ray powder diffraction (XRPD) analysis. Adsorption of AFB(1) (C-0 = 4 ppm) by Zn-MONT, at different solid/liquid ratios (10, 1 and 0.5 g L-1), at pH 3 or 7, showed that its adsorption was high (over 96%) and independent of pH, similar to MONT. No desorption of AFB(1) from MONT-AFB(1) and Zn-MONT-AFB(1) complexes occurred at pH 6.5, suggesting strong binding of AFB(1) by both adsorbents. Furthermore, AFB(1) adsorption by Zn-MONT followed a nonlinear (Langmuir) type of isotherm at pH 3 with a calculated maximum capacity of 60.17 mg g(-1). The stability of MONT-AFB(1) and Zn-MONT-AFB(1) complexes was evaluated by calculating the binding energies between AFB(1) and metal cations using quantum chemical methods. The evaluated interaction energies of AFB(1) with hydrated Zn2+, Mg2+, and Ca2+ cations showed that the strongest interaction was the interaction of the Zn2+ system, -70.2 kcal mol(-1), whereas energies for Mg-2 and Ca2+ systems were -68.8 and -62.9 kcal mol(-1), respectively. The results indicate that Zn-MONT can be suitable for potential practical application as both, an antibacterial and an aflatoxin binding agent. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent",
volume = "137",
number = "1",
pages = "213-220",
doi = "10.1016/j.matchemphys.2012.09.010"
}
Dakovic, A., Kragović, M. M., Rottinghaus, G. E., Ledoux, D. R., Butkeraitis, P., Vojislavljevic, D. Z., Zarić, S. D.,& Stamenić, L.. (2012). Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent. in Materials Chemistry and Physics, 137(1), 213-220.
https://doi.org/10.1016/j.matchemphys.2012.09.010
Dakovic A, Kragović MM, Rottinghaus GE, Ledoux DR, Butkeraitis P, Vojislavljevic DZ, Zarić SD, Stamenić L. Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent. in Materials Chemistry and Physics. 2012;137(1):213-220.
doi:10.1016/j.matchemphys.2012.09.010 .
Dakovic, Aleksandra, Kragović, Milan M., Rottinghaus, George E., Ledoux, David R., Butkeraitis, Paula, Vojislavljevic, Dubravka Z., Zarić, Snežana D., Stamenić, Ljubisav, "Preparation and characterization of zinc-exchanged montmorillonite and its effectiveness as aflatoxin B-1 adsorbent" in Materials Chemistry and Physics, 137, no. 1 (2012):213-220,
https://doi.org/10.1016/j.matchemphys.2012.09.010 . .
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Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers

Maksin, Danijela D.; Nastasović, Aleksandra B.; Milutinovic-Nikolic, Aleksandra D.; Suručić, Ljiljana T.; Sandić, Zvjezdana; Hercigonja, Radmila V.; Onjia, Antonije E.

(2012)

TY  - JOUR
AU  - Maksin, Danijela D.
AU  - Nastasović, Aleksandra B.
AU  - Milutinovic-Nikolic, Aleksandra D.
AU  - Suručić, Ljiljana T.
AU  - Sandić, Zvjezdana
AU  - Hercigonja, Radmila V.
AU  - Onjia, Antonije E.
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4756
AB  - Two porous and one non-porous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [abbreviated PGME] were prepared by suspension copolymerization and functionalized with diethylene triamine [abbreviated PGME-deta]. Samples were characterized by elemental analysis, mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy, and transmission electron microscopy. Kinetics of Cr(VI) sorption by PGME-deta were investigated in batch static experiments, in the temperature range 25-70 degrees C. Sorption was rapid, with the uptake capacity higher than 80% after 30 min. Sorption behavior and rate-controlling mechanisms were analyzed using five kinetic models (pseudo-first order, pseudo-second order, Elovich, intraparticle diffusion and Bangham model). Kinetic studies showed that Cr(VI) adsorption adhered to the pseudo-second-order model, with definite influence of pore diffusion. Equilibrium data was tested with Langmuir, Freundlich and Tempkin adsorption isotherm models. Langmuir model was the most suitable indicating homogeneous distribution of active sites on PGME-deta and monolayer sorption. The maximum adsorption capacity from the Langmuir model, Q(max),at pH 1.8 and 25 degrees C was 143 mg g(-1) for PGME2-deta (sample with the highest amino group concentration) while at 70 degrees C Q(max) reached the high value of 198 mg g(-1). Thermodynamic parameters revealed spontaneous and endothermic nature of Cr(VI) adsorption onto PGME-deta. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Journal of Hazardous Materials
T1  - Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers
VL  - 209
SP  - 99
EP  - 110
DO  - 10.1016/j.jhazmat.2011.12.079
ER  - 
@article{
author = "Maksin, Danijela D. and Nastasović, Aleksandra B. and Milutinovic-Nikolic, Aleksandra D. and Suručić, Ljiljana T. and Sandić, Zvjezdana and Hercigonja, Radmila V. and Onjia, Antonije E.",
year = "2012",
abstract = "Two porous and one non-porous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [abbreviated PGME] were prepared by suspension copolymerization and functionalized with diethylene triamine [abbreviated PGME-deta]. Samples were characterized by elemental analysis, mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy, and transmission electron microscopy. Kinetics of Cr(VI) sorption by PGME-deta were investigated in batch static experiments, in the temperature range 25-70 degrees C. Sorption was rapid, with the uptake capacity higher than 80% after 30 min. Sorption behavior and rate-controlling mechanisms were analyzed using five kinetic models (pseudo-first order, pseudo-second order, Elovich, intraparticle diffusion and Bangham model). Kinetic studies showed that Cr(VI) adsorption adhered to the pseudo-second-order model, with definite influence of pore diffusion. Equilibrium data was tested with Langmuir, Freundlich and Tempkin adsorption isotherm models. Langmuir model was the most suitable indicating homogeneous distribution of active sites on PGME-deta and monolayer sorption. The maximum adsorption capacity from the Langmuir model, Q(max),at pH 1.8 and 25 degrees C was 143 mg g(-1) for PGME2-deta (sample with the highest amino group concentration) while at 70 degrees C Q(max) reached the high value of 198 mg g(-1). Thermodynamic parameters revealed spontaneous and endothermic nature of Cr(VI) adsorption onto PGME-deta. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Journal of Hazardous Materials",
title = "Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers",
volume = "209",
pages = "99-110",
doi = "10.1016/j.jhazmat.2011.12.079"
}
Maksin, D. D., Nastasović, A. B., Milutinovic-Nikolic, A. D., Suručić, L. T., Sandić, Z., Hercigonja, R. V.,& Onjia, A. E.. (2012). Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers. in Journal of Hazardous Materials, 209, 99-110.
https://doi.org/10.1016/j.jhazmat.2011.12.079
Maksin DD, Nastasović AB, Milutinovic-Nikolic AD, Suručić LT, Sandić Z, Hercigonja RV, Onjia AE. Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers. in Journal of Hazardous Materials. 2012;209:99-110.
doi:10.1016/j.jhazmat.2011.12.079 .
Maksin, Danijela D., Nastasović, Aleksandra B., Milutinovic-Nikolic, Aleksandra D., Suručić, Ljiljana T., Sandić, Zvjezdana, Hercigonja, Radmila V., Onjia, Antonije E., "Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers" in Journal of Hazardous Materials, 209 (2012):99-110,
https://doi.org/10.1016/j.jhazmat.2011.12.079 . .
84
96
102

Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer

Maksin, Danijela D.; Hercigonja, Radmila V.; Lazarević, Magdalena Z.; Zunic, Marija J.; Nastasović, Aleksandra B.

(2012)

TY  - JOUR
AU  - Maksin, Danijela D.
AU  - Hercigonja, Radmila V.
AU  - Lazarević, Magdalena Z.
AU  - Zunic, Marija J.
AU  - Nastasović, Aleksandra B.
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4596
AB  - Technetium-99 comprises a significant health risk, since edible plants can bioaccumulate and convert it to more lipophilic species that cannot be excreted through urine. Batch kinetics of pertechnetate removal from aqueous solutions by two samples of crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) functionalized with diethylene triamine (PGME-deta) was investigated at the optimum pH value of 3.0, and the initial solution activity of 325 MBq dm(-3). PGME-deta was characterized by elemental analysis, mercury intrusion porosimetry, and scanning electron microscopy. Five kinetic models (pseudo-first, pseudo-second order, Elovich, Bangham, and intraparticle diffusion) were used to determine the best-fit equation for pertechnetate sorption. After 24 h, PGME-deta samples sorbed more than 98% of pertechnetate present, with maximum sorption capacity of 25.5 MBq g(-1), showing good potential for remediation of slightly contaminated groundwater.
T2  - Polymer Bulletin
T1  - Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer
VL  - 68
IS  - 2
SP  - 507
EP  - 528
DO  - 10.1007/s00289-011-0634-5
ER  - 
@article{
author = "Maksin, Danijela D. and Hercigonja, Radmila V. and Lazarević, Magdalena Z. and Zunic, Marija J. and Nastasović, Aleksandra B.",
year = "2012",
abstract = "Technetium-99 comprises a significant health risk, since edible plants can bioaccumulate and convert it to more lipophilic species that cannot be excreted through urine. Batch kinetics of pertechnetate removal from aqueous solutions by two samples of crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) functionalized with diethylene triamine (PGME-deta) was investigated at the optimum pH value of 3.0, and the initial solution activity of 325 MBq dm(-3). PGME-deta was characterized by elemental analysis, mercury intrusion porosimetry, and scanning electron microscopy. Five kinetic models (pseudo-first, pseudo-second order, Elovich, Bangham, and intraparticle diffusion) were used to determine the best-fit equation for pertechnetate sorption. After 24 h, PGME-deta samples sorbed more than 98% of pertechnetate present, with maximum sorption capacity of 25.5 MBq g(-1), showing good potential for remediation of slightly contaminated groundwater.",
journal = "Polymer Bulletin",
title = "Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer",
volume = "68",
number = "2",
pages = "507-528",
doi = "10.1007/s00289-011-0634-5"
}
Maksin, D. D., Hercigonja, R. V., Lazarević, M. Z., Zunic, M. J.,& Nastasović, A. B.. (2012). Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer. in Polymer Bulletin, 68(2), 507-528.
https://doi.org/10.1007/s00289-011-0634-5
Maksin DD, Hercigonja RV, Lazarević MZ, Zunic MJ, Nastasović AB. Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer. in Polymer Bulletin. 2012;68(2):507-528.
doi:10.1007/s00289-011-0634-5 .
Maksin, Danijela D., Hercigonja, Radmila V., Lazarević, Magdalena Z., Zunic, Marija J., Nastasović, Aleksandra B., "Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer" in Polymer Bulletin, 68, no. 2 (2012):507-528,
https://doi.org/10.1007/s00289-011-0634-5 . .
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