TY  - JOUR
AU  - Suručić, Ljiljana
AU  - Janjić, Goran
AU  - Marković, Bojana
AU  - Tadić, Tamara
AU  - Vuković, Zorica
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6357
AB  - A new magnetic amino-functionalized polymeric sorbent based on glycidyl methacrylate was synthesized and used in the separation of chromium Cr(VI) oxyanions sorption from aqueous solutions in a static batch system. The kinetic and isothermal parameters of the sorption process were determined. The experimental data were best fitted by a pseudo-second-order model with R2 = 0.994 and χ2 = 0.004. The sorption process of Cr(VI) removal by amino-functionalized sorbent was controlled by both intraparticle diffusion and liquid film diffusion. The equilibrium results showed that the sorption process is best described by the Freundlich model, followed closely by the Sips isotherm model, with a maximum sorption capacity of 64 mg/g. Quantum chemical modeling revealed that the sorption sites on the sorbent surface are fragments with diethylenetriamine and aminopropyl silane groups that coated the magnetic nanoparticles. The calculations showed that Cr(VI) oxyanions (Cr2O72−, CrO42− and HCrO4−) bind to both sorption sites, with diethylenetriamine centers slightly favored. The X-ray photoelectron spectroscopy (XPS) spectra demonstrate that the chromium bound to the sorbent in the form of Cr(III), indicating that the Cr(VI) can be converted on the surface of the sorbent to a less harmful form Cr(III) due to the sorbent’s chemical composition.
PB  - MDPI
T2  - Materials
T1  - Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite
IS  - 6
SP  - 2233
VL  - 16
DO  - 10.3390/ma16062233
ER  - 

@article{
author = "Suručić, Ljiljana and Janjić, Goran and Marković, Bojana and Tadić, Tamara and Vuković, Zorica and Nastasović, Aleksandra and Onjia, Antonije",
year = "2023",
abstract = "A new magnetic amino-functionalized polymeric sorbent based on glycidyl methacrylate was synthesized and used in the separation of chromium Cr(VI) oxyanions sorption from aqueous solutions in a static batch system. The kinetic and isothermal parameters of the sorption process were determined. The experimental data were best fitted by a pseudo-second-order model with R2 = 0.994 and χ2 = 0.004. The sorption process of Cr(VI) removal by amino-functionalized sorbent was controlled by both intraparticle diffusion and liquid film diffusion. The equilibrium results showed that the sorption process is best described by the Freundlich model, followed closely by the Sips isotherm model, with a maximum sorption capacity of 64 mg/g. Quantum chemical modeling revealed that the sorption sites on the sorbent surface are fragments with diethylenetriamine and aminopropyl silane groups that coated the magnetic nanoparticles. The calculations showed that Cr(VI) oxyanions (Cr2O72−, CrO42− and HCrO4−) bind to both sorption sites, with diethylenetriamine centers slightly favored. The X-ray photoelectron spectroscopy (XPS) spectra demonstrate that the chromium bound to the sorbent in the form of Cr(III), indicating that the Cr(VI) can be converted on the surface of the sorbent to a less harmful form Cr(III) due to the sorbent’s chemical composition.",
publisher = "MDPI",
journal = "Materials",
title = "Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite",
number = "6",
pages = "2233",
volume = "16",
doi = "10.3390/ma16062233"
}

Suručić, L., Janjić, G., Marković, B., Tadić, T., Vuković, Z., Nastasović, A.,& Onjia, A.. (2023). Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite. in Materials
MDPI., 16(6), 2233.
https://doi.org/10.3390/ma16062233

Suručić L, Janjić G, Marković B, Tadić T, Vuković Z, Nastasović A, Onjia A. Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite. in Materials. 2023;16(6):2233.
doi:10.3390/ma16062233 .

Suručić, Ljiljana, Janjić, Goran, Marković, Bojana, Tadić, Tamara, Vuković, Zorica, Nastasović, Aleksandra, Onjia, Antonije, "Speciation of Hexavalent Chromium in Aqueous Solutions Using a Magnetic Silica-Coated Amino-Modified Glycidyl Methacrylate Polymer Nanocomposite" in Materials, 16, no. 6 (2023):2233,
https://doi.org/10.3390/ma16062233 . .

TY  - JOUR
AU  - Tadić, Tamara
AU  - Marković, Bojana
AU  - Radulović, Jelena
AU  - Lukić, Jelena
AU  - Suručić, Ljiljana
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5200
AB  - A core-shell amino-functionalized glycidyl methacrylate magnetic molecularly imprinted polymer (MIP) was synthesized by the suspension polymerization/surface imprinting method and characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), mercury porosimetry, nitrogen gas adsorption–desorption, and elemental analysis. This MIP was used as the sorbent in dispersive solid-phase microextraction (DSPME) of aniline from textile wastewater prior to high-performance liquid chromatography-mass spectrometry (HPLC-MS) measurements. Since aniline is toxic and a probable human carcinogen, its determination in water is of great significance. This is a challenging task because aniline is usually present at trace levels. The effects of different DSPME variables on the preconcentration efficiency have been studied by using the Plackett–Burman screening design of experiments (DoE) followed by response surface methodology optimization using the Box-Behnken design. Thus, DoE enabled the investigation of several variables simultaneously. Under optimized conditions, aniline was effectively and selectively separated by a small amount of the DSPME sorbent and detected in real textile wastewater samples. The method detection limit of 1 ng mL−1 was attained, with good method linearity and acceptable recovery and precision. The results showed that the studied MIP could be a reliable DSPME sorbent for efficiently analyzing trace aniline in real wastewater samples.
PB  - MDPI
T2  - Sustainability (Switzerland)
T1  - A Core-Shell Amino-Functionalized Magnetic Molecularly Imprinted Polymer Based on Glycidyl Methacrylate for Dispersive Solid-Phase Microextraction of Aniline
IS  - 15
SP  - 9222
VL  - 14
DO  - 10.3390/su14159222
ER  - 

@article{
author = "Tadić, Tamara and Marković, Bojana and Radulović, Jelena and Lukić, Jelena and Suručić, Ljiljana and Nastasović, Aleksandra and Onjia, Antonije",
year = "2022",
abstract = "A core-shell amino-functionalized glycidyl methacrylate magnetic molecularly imprinted polymer (MIP) was synthesized by the suspension polymerization/surface imprinting method and characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), mercury porosimetry, nitrogen gas adsorption–desorption, and elemental analysis. This MIP was used as the sorbent in dispersive solid-phase microextraction (DSPME) of aniline from textile wastewater prior to high-performance liquid chromatography-mass spectrometry (HPLC-MS) measurements. Since aniline is toxic and a probable human carcinogen, its determination in water is of great significance. This is a challenging task because aniline is usually present at trace levels. The effects of different DSPME variables on the preconcentration efficiency have been studied by using the Plackett–Burman screening design of experiments (DoE) followed by response surface methodology optimization using the Box-Behnken design. Thus, DoE enabled the investigation of several variables simultaneously. Under optimized conditions, aniline was effectively and selectively separated by a small amount of the DSPME sorbent and detected in real textile wastewater samples. The method detection limit of 1 ng mL−1 was attained, with good method linearity and acceptable recovery and precision. The results showed that the studied MIP could be a reliable DSPME sorbent for efficiently analyzing trace aniline in real wastewater samples.",
publisher = "MDPI",
journal = "Sustainability (Switzerland)",
title = "A Core-Shell Amino-Functionalized Magnetic Molecularly Imprinted Polymer Based on Glycidyl Methacrylate for Dispersive Solid-Phase Microextraction of Aniline",
number = "15",
pages = "9222",
volume = "14",
doi = "10.3390/su14159222"
}

Tadić, T., Marković, B., Radulović, J., Lukić, J., Suručić, L., Nastasović, A.,& Onjia, A.. (2022). A Core-Shell Amino-Functionalized Magnetic Molecularly Imprinted Polymer Based on Glycidyl Methacrylate for Dispersive Solid-Phase Microextraction of Aniline. in Sustainability (Switzerland)
MDPI., 14(15), 9222.
https://doi.org/10.3390/su14159222

Tadić T, Marković B, Radulović J, Lukić J, Suručić L, Nastasović A, Onjia A. A Core-Shell Amino-Functionalized Magnetic Molecularly Imprinted Polymer Based on Glycidyl Methacrylate for Dispersive Solid-Phase Microextraction of Aniline. in Sustainability (Switzerland). 2022;14(15):9222.
doi:10.3390/su14159222 .

Tadić, Tamara, Marković, Bojana, Radulović, Jelena, Lukić, Jelena, Suručić, Ljiljana, Nastasović, Aleksandra, Onjia, Antonije, "A Core-Shell Amino-Functionalized Magnetic Molecularly Imprinted Polymer Based on Glycidyl Methacrylate for Dispersive Solid-Phase Microextraction of Aniline" in Sustainability (Switzerland), 14, no. 15 (2022):9222,
https://doi.org/10.3390/su14159222 . .

TY  - JOUR
AU  - Stefanović, Ivan S.
AU  - Marković, Bojana M.
AU  - Nastasović, Aleksandra B.
AU  - Vuković, Zorica M.
AU  - Dapčević, Aleksandra
AU  - Pavlović, Vladimir B.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5174
AB  - The impact of the type and amounts of nanofiller on the features of the glycidyl methacrylate-co-ethylene glycol dimethacrylate (GMA-co-EGDMA)/organomodified montmorillonite (OMt) nanocomposites that were prepared by in situ radical suspension polymerization, was examined. Cloisite 30B and Cloisite 25A were used in this study as nanofillers, in amounts of 2 and 10 wt.%. The structure, morphology, thermal stability and porosity of the initial GMA-co-EGDMA copolymer and their nanocomposites were examined by ATR-FTIR analysis, wide angle X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and mercury porosimetry. It has been established that both clay nanofillers were successfully incorporated into the structure of the initial copolymer, simultaneously on their surface and also on cross-sectional area. Prepared samples with 2 wt.% have predominantly exfoliated, while samples with 10 wt.% have some tactoids-aggregates structure of the OMt layers. Thermogravimetric analysis revealed that after ~ 30 % of degradation, all nanocomposites become more thermal stable than the initial copolymer. The obtained results indicate that porosity parameters can be easily modified with the addition of clay nanofillers and thus prepared nanocomposites adjusted to specific purposes. © 2022 Authors. Published by association for ETRAN Society.
T2  - Science of Sintering
T2  - Science of Sintering
T1  - Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites
EP  - 200
IS  - 2
SP  - 189
VL  - 54
DO  - 10.2298/SOS2202189S
ER  - 

@article{
author = "Stefanović, Ivan S. and Marković, Bojana M. and Nastasović, Aleksandra B. and Vuković, Zorica M. and Dapčević, Aleksandra and Pavlović, Vladimir B.",
year = "2022",
abstract = "The impact of the type and amounts of nanofiller on the features of the glycidyl methacrylate-co-ethylene glycol dimethacrylate (GMA-co-EGDMA)/organomodified montmorillonite (OMt) nanocomposites that were prepared by in situ radical suspension polymerization, was examined. Cloisite 30B and Cloisite 25A were used in this study as nanofillers, in amounts of 2 and 10 wt.%. The structure, morphology, thermal stability and porosity of the initial GMA-co-EGDMA copolymer and their nanocomposites were examined by ATR-FTIR analysis, wide angle X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and mercury porosimetry. It has been established that both clay nanofillers were successfully incorporated into the structure of the initial copolymer, simultaneously on their surface and also on cross-sectional area. Prepared samples with 2 wt.% have predominantly exfoliated, while samples with 10 wt.% have some tactoids-aggregates structure of the OMt layers. Thermogravimetric analysis revealed that after ~ 30 % of degradation, all nanocomposites become more thermal stable than the initial copolymer. The obtained results indicate that porosity parameters can be easily modified with the addition of clay nanofillers and thus prepared nanocomposites adjusted to specific purposes. © 2022 Authors. Published by association for ETRAN Society.",
journal = "Science of Sintering, Science of Sintering",
title = "Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites",
pages = "200-189",
number = "2",
volume = "54",
doi = "10.2298/SOS2202189S"
}

Stefanović, I. S., Marković, B. M., Nastasović, A. B., Vuković, Z. M., Dapčević, A.,& Pavlović, V. B.. (2022). Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites. in Science of Sintering, 54(2), 189-200.
https://doi.org/10.2298/SOS2202189S

Stefanović IS, Marković BM, Nastasović AB, Vuković ZM, Dapčević A, Pavlović VB. Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites. in Science of Sintering. 2022;54(2):189-200.
doi:10.2298/SOS2202189S .

Stefanović, Ivan S., Marković, Bojana M., Nastasović, Aleksandra B., Vuković, Zorica M., Dapčević, Aleksandra, Pavlović, Vladimir B., "Preparation and Characterization of Novel Glycidyl Methacrylate/Clay Nanocomposites" in Science of Sintering, 54, no. 2 (2022):189-200,
https://doi.org/10.2298/SOS2202189S . .

TY  - JOUR
AU  - Nastasović, Aleksandra
AU  - Marković, Bojana
AU  - Suručić, Ljiljana
AU  - Onjia, Antonije
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5129
AB  - The industrialization and urbanization expansion have increased the demand for precious and rare earth elements (REEs). In addition, environmental concerns regarding the toxic effects of heavy metals on living organisms imposed an urgent need for efficient methods for their removal from wastewaters and aqueous solutions. The most efficient technique for metal ions removal from wastewaters is adsorption due to its reversibility and high efficiency. Numerous adsorbents were mentioned as possible metal ions adsorbents in the literature. Chelating polymer ligands (CPLs) with adaptable surface chemistry, high affinity towards targeted metal ions, high capacity, fast kinetics, chemically stable, and reusable are especially attractive. This review is focused on methacrylatebased magnetic and non-magnetic porous sorbents. Special attention was devoted to amino-modified glycidyl methacrylate (GMA) copolymers. Main adsorption parameters, kinetic models, adsorption isotherms, thermodynamics of the adsorption process, as well as regeneration of the polymeric sorbents were discussed.
PB  - MDPI
T2  - Metals
T1  - Methacrylate-Based Polymeric Sorbents for Recovery of Metals from Aqueous Solutions
IS  - 5
SP  - 814
VL  - 12
DO  - 10.3390/met12050814
ER  - 

@article{
author = "Nastasović, Aleksandra and Marković, Bojana and Suručić, Ljiljana and Onjia, Antonije",
year = "2022",
abstract = "The industrialization and urbanization expansion have increased the demand for precious and rare earth elements (REEs). In addition, environmental concerns regarding the toxic effects of heavy metals on living organisms imposed an urgent need for efficient methods for their removal from wastewaters and aqueous solutions. The most efficient technique for metal ions removal from wastewaters is adsorption due to its reversibility and high efficiency. Numerous adsorbents were mentioned as possible metal ions adsorbents in the literature. Chelating polymer ligands (CPLs) with adaptable surface chemistry, high affinity towards targeted metal ions, high capacity, fast kinetics, chemically stable, and reusable are especially attractive. This review is focused on methacrylatebased magnetic and non-magnetic porous sorbents. Special attention was devoted to amino-modified glycidyl methacrylate (GMA) copolymers. Main adsorption parameters, kinetic models, adsorption isotherms, thermodynamics of the adsorption process, as well as regeneration of the polymeric sorbents were discussed.",
publisher = "MDPI",
journal = "Metals",
title = "Methacrylate-Based Polymeric Sorbents for Recovery of Metals from Aqueous Solutions",
number = "5",
pages = "814",
volume = "12",
doi = "10.3390/met12050814"
}

Nastasović, A., Marković, B., Suručić, L.,& Onjia, A.. (2022). Methacrylate-Based Polymeric Sorbents for Recovery of Metals from Aqueous Solutions. in Metals
MDPI., 12(5), 814.
https://doi.org/10.3390/met12050814

Nastasović A, Marković B, Suručić L, Onjia A. Methacrylate-Based Polymeric Sorbents for Recovery of Metals from Aqueous Solutions. in Metals. 2022;12(5):814.
doi:10.3390/met12050814 .

Nastasović, Aleksandra, Marković, Bojana, Suručić, Ljiljana, Onjia, Antonije, "Methacrylate-Based Polymeric Sorbents for Recovery of Metals from Aqueous Solutions" in Metals, 12, no. 5 (2022):814,
https://doi.org/10.3390/met12050814 . .

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Spasojević, Vojislav
AU  - Dapčević, Aleksandra
AU  - Vuković, Zorica M.
AU  - Pavlović, Vladimir B.
AU  - Ranđelović, Danijela
AU  - Nastasović, Aleksandra
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4179
AB  - Magnetic and non-magnetic macroporous crosslinked copolymers of glycidyl methacrylate and trimethylolpropane trimethacrylate were prepared by suspension copolymerization and functionalized with diethylenetriamine. The samples were characterized by mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy analysis (FTIR-ATR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM) and SQUID magnetometry. The FTIR-ATR analysis of synthesized magnetic nanocomposites confirmed the presence of magnetite and successful aminofunctionalization. Non-functionalized and amino-functionalized nanocomposites exhibited superparamagnetic behavior at 300 K, with a saturation magnetization of 5.0 emu/g and 2.9 emu/g, respectively. TEM analysis of the magnetic nanocomposite has shown that magnetic nanoparticles were homogeneously dispersed in the polymer matrix. It was demonstrated that incorporation of magnetic nanoparticles enhanced the thermal stability of the magnetic nanocomposite in comparison to the initial non-magnetic macroporous copolymer.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Characterization of glycidyl methacrylate based magnetic nanocomposites
EP  - 35
IS  - 1
SP  - 25
VL  - 73
DO  - 10.2298/HEMIND181113006M
ER  - 

@article{
author = "Marković, Bojana M. and Spasojević, Vojislav and Dapčević, Aleksandra and Vuković, Zorica M. and Pavlović, Vladimir B. and Ranđelović, Danijela and Nastasović, Aleksandra",
year = "2019",
abstract = "Magnetic and non-magnetic macroporous crosslinked copolymers of glycidyl methacrylate and trimethylolpropane trimethacrylate were prepared by suspension copolymerization and functionalized with diethylenetriamine. The samples were characterized by mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy analysis (FTIR-ATR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM) and SQUID magnetometry. The FTIR-ATR analysis of synthesized magnetic nanocomposites confirmed the presence of magnetite and successful aminofunctionalization. Non-functionalized and amino-functionalized nanocomposites exhibited superparamagnetic behavior at 300 K, with a saturation magnetization of 5.0 emu/g and 2.9 emu/g, respectively. TEM analysis of the magnetic nanocomposite has shown that magnetic nanoparticles were homogeneously dispersed in the polymer matrix. It was demonstrated that incorporation of magnetic nanoparticles enhanced the thermal stability of the magnetic nanocomposite in comparison to the initial non-magnetic macroporous copolymer.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Characterization of glycidyl methacrylate based magnetic nanocomposites",
pages = "35-25",
number = "1",
volume = "73",
doi = "10.2298/HEMIND181113006M"
}

Marković, B. M., Spasojević, V., Dapčević, A., Vuković, Z. M., Pavlović, V. B., Ranđelović, D.,& Nastasović, A.. (2019). Characterization of glycidyl methacrylate based magnetic nanocomposites. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 73(1), 25-35.
https://doi.org/10.2298/HEMIND181113006M

Marković BM, Spasojević V, Dapčević A, Vuković ZM, Pavlović VB, Ranđelović D, Nastasović A. Characterization of glycidyl methacrylate based magnetic nanocomposites. in Hemijska industrija. 2019;73(1):25-35.
doi:10.2298/HEMIND181113006M .

Marković, Bojana M., Spasojević, Vojislav, Dapčević, Aleksandra, Vuković, Zorica M., Pavlović, Vladimir B., Ranđelović, Danijela, Nastasović, Aleksandra, "Characterization of glycidyl methacrylate based magnetic nanocomposites" in Hemijska industrija, 73, no. 1 (2019):25-35,
https://doi.org/10.2298/HEMIND181113006M . .

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Stefanović, Ivan
AU  - Hercigonja, Radmila
AU  - Pergal, Marija
AU  - Marković, Jelena P.
AU  - Onjia, Antonije
AU  - Nastasović, Aleksandra
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3753
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.
PB  - Wiley, Hoboken
T2  - Polymer International
T1  - Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions
EP  - 689
IS  - 5
SP  - 679
VL  - 66
DO  - 10.1002/pi.5306
ER  - 

@article{
author = "Marković, Bojana M. and Stefanović, Ivan and Hercigonja, Radmila and Pergal, Marija and Marković, Jelena P. and Onjia, Antonije and Nastasović, Aleksandra",
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.",
publisher = "Wiley, Hoboken",
journal = "Polymer International",
title = "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions",
pages = "689-679",
number = "5",
volume = "66",
doi = "10.1002/pi.5306"
}

Marković, B. M., Stefanović, I., Hercigonja, R., Pergal, M., Marković, J. P., Onjia, A.,& Nastasović, A.. (2017). Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International
Wiley, Hoboken., 66(5), 679-689.
https://doi.org/10.1002/pi.5306

Marković BM, Stefanović I, Hercigonja R, Pergal M, Marković JP, Onjia A, Nastasović A. 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., Stefanović, Ivan, Hercigonja, Radmila, Pergal, Marija, Marković, Jelena P., Onjia, Antonije, Nastasović, Aleksandra, "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 . .

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Vuković, Zorica M.
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Pavlović, Vladimir B.
AU  - Onjia, Antonije
AU  - Nastasović, Aleksandra
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3752
AB  - Magnetic macroporous crosslinked copolymer glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA) samples with different magnetite content were prepared by suspension copolymerization and functionalized with diethylene triamine. Samples were characterized by elemental analysis, mercury porosimetry, Fourier transform infrared spectroscopy (FTIR) analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy, transmission electron microscopy, SQUID magnetometry and X-ray photoelectron spectroscopy (XPS). The selected amino-functionalized sample was tested as a potential sorbent for the Mo(VI) and Re(VII) oxyanions from aqueous solutions. The influence of pH, ionic strength and possible interfering of cations and anions was investigated. Equilibrium data were analyzed with Langmuir, Freundlich and Tempkin adsorption isotherm models. Sorption studies were carried out in a batch competitive experiments, in the pH range 1-8, at 298 K. Obtained results indicate that 92% of Re(VII) and 98% of Mo(VI) were sorbed at pH 2.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption
EP  - 50
SP  - 38
VL  - 705
DO  - 10.1016/j.jallcom.2017.02.108
ER  - 

@article{
author = "Marković, Bojana M. and Vuković, Zorica M. and Spasojević, Vojislav and Kusigerski, Vladan and Pavlović, Vladimir B. and Onjia, Antonije and Nastasović, Aleksandra",
year = "2017",
abstract = "Magnetic macroporous crosslinked copolymer glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA) samples with different magnetite content were prepared by suspension copolymerization and functionalized with diethylene triamine. Samples were characterized by elemental analysis, mercury porosimetry, Fourier transform infrared spectroscopy (FTIR) analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy, transmission electron microscopy, SQUID magnetometry and X-ray photoelectron spectroscopy (XPS). The selected amino-functionalized sample was tested as a potential sorbent for the Mo(VI) and Re(VII) oxyanions from aqueous solutions. The influence of pH, ionic strength and possible interfering of cations and anions was investigated. Equilibrium data were analyzed with Langmuir, Freundlich and Tempkin adsorption isotherm models. Sorption studies were carried out in a batch competitive experiments, in the pH range 1-8, at 298 K. Obtained results indicate that 92% of Re(VII) and 98% of Mo(VI) were sorbed at pH 2.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption",
pages = "50-38",
volume = "705",
doi = "10.1016/j.jallcom.2017.02.108"
}

Marković, B. M., Vuković, Z. M., Spasojević, V., Kusigerski, V., Pavlović, V. B., Onjia, A.,& Nastasović, A.. (2017). Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 705, 38-50.
https://doi.org/10.1016/j.jallcom.2017.02.108

Marković BM, Vuković ZM, Spasojević V, Kusigerski V, Pavlović VB, Onjia A, Nastasović A. Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption. in Journal of Alloys and Compounds. 2017;705:38-50.
doi:10.1016/j.jallcom.2017.02.108 .

Marković, Bojana M., Vuković, Zorica M., Spasojević, Vojislav, Kusigerski, Vladan, Pavlović, Vladimir B., Onjia, Antonije, Nastasović, Aleksandra, "Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption" in Journal of Alloys and Compounds, 705 (2017):38-50,
https://doi.org/10.1016/j.jallcom.2017.02.108 . .