TY  - JOUR
AU  - Dojčinović, Biljana P.
AU  - Jančar, Boštjan
AU  - Bessais, Lotfi
AU  - Kremenović, Aleksandar S.
AU  - Jović-Jovičić, Nataša P.
AU  - Banković, Predrag T.
AU  - Stanković, Dalibor M.
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8612
AB  - Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3-xYxO4 nanoparticles formed. The series of Fe3-xYxO4 (x = 0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200 degrees C. With increase of yttrium content (x value), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By both transmission electron microscopy and x-ray powder diffraction analyses, it was determined that the direction of growth of the spinel nanorods is along the [110] crystallographic direction. The Fe3-xYxO4 affinities of adsorption toward the inorganic arsenic species, As(III) (arsenite, AsO33-) and As(V) (arsenate, AsO43-), were investigated. Increased Y3+ content related to changes in sample morphology was followed by a decrease of As(III) removal efficiency and vice versa for As(V). The increase in Y3+ content, in addition to increasing the adsorption capacity for As(V), significantly expanded the optimum pH range for the maximum removal and decreased the contact time for necessary 50% removal (t(1/2)) of As(V) (Y00: pH 2-3, t(1/2) = 3.12 min; Y05: pH 2-6, t(1/2) = 2.12 min and Y10: pH 2-10, t(1/2) = 1.12 min). The results point to incorporation of Y3+ in the crystal lattice of magnetite, inducing nanorod spinel structure formation with significant changes in sorption properties important for the removal of inorganic arsenic from waters.
T2  - Nanotechnology
T1  - Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species
VL  - 30
IS  - 47
SP  - 475702
DO  - 10.1088/1361-6528/ab3ca2
ER  - 

@article{
author = "Dojčinović, Biljana P. and Jančar, Boštjan and Bessais, Lotfi and Kremenović, Aleksandar S. and Jović-Jovičić, Nataša P. and Banković, Predrag T. and Stanković, Dalibor M. and Ognjanović, Miloš and Antić, Bratislav",
year = "2019",
abstract = "Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3-xYxO4 nanoparticles formed. The series of Fe3-xYxO4 (x = 0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200 degrees C. With increase of yttrium content (x value), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By both transmission electron microscopy and x-ray powder diffraction analyses, it was determined that the direction of growth of the spinel nanorods is along the [110] crystallographic direction. The Fe3-xYxO4 affinities of adsorption toward the inorganic arsenic species, As(III) (arsenite, AsO33-) and As(V) (arsenate, AsO43-), were investigated. Increased Y3+ content related to changes in sample morphology was followed by a decrease of As(III) removal efficiency and vice versa for As(V). The increase in Y3+ content, in addition to increasing the adsorption capacity for As(V), significantly expanded the optimum pH range for the maximum removal and decreased the contact time for necessary 50% removal (t(1/2)) of As(V) (Y00: pH 2-3, t(1/2) = 3.12 min; Y05: pH 2-6, t(1/2) = 2.12 min and Y10: pH 2-10, t(1/2) = 1.12 min). The results point to incorporation of Y3+ in the crystal lattice of magnetite, inducing nanorod spinel structure formation with significant changes in sorption properties important for the removal of inorganic arsenic from waters.",
journal = "Nanotechnology",
title = "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species",
volume = "30",
number = "47",
pages = "475702",
doi = "10.1088/1361-6528/ab3ca2"
}

Dojčinović, B. P., Jančar, B., Bessais, L., Kremenović, A. S., Jović-Jovičić, N. P., Banković, P. T., Stanković, D. M., Ognjanović, M.,& Antić, B.. (2019). Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species. in Nanotechnology, 30(47), 475702.
https://doi.org/10.1088/1361-6528/ab3ca2

Dojčinović BP, Jančar B, Bessais L, Kremenović AS, Jović-Jovičić NP, Banković PT, Stanković DM, Ognjanović M, Antić B. Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species. in Nanotechnology. 2019;30(47):475702.
doi:10.1088/1361-6528/ab3ca2 .

Dojčinović, Biljana P., Jančar, Boštjan, Bessais, Lotfi, Kremenović, Aleksandar S., Jović-Jovičić, Nataša P., Banković, Predrag T., Stanković, Dalibor M., Ognjanović, Miloš, Antić, Bratislav, "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species" in Nanotechnology, 30, no. 47 (2019):475702,
https://doi.org/10.1088/1361-6528/ab3ca2 . .

TY  - JOUR
AU  - Jović-Jovičić, Nataša P.
AU  - Mojović, Miloš D.
AU  - Stanković, Dalibor M.
AU  - Vasiljević-Nedić, Bojana
AU  - Milutinović-Nikolić, Aleksandra D.
AU  - Banković, Predrag T.
AU  - Mojović, Zorica D.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0013468618325039
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7979
AB  - Series of alkylammonium modified smectites with different alkylammoinum/clay ratios was synthesized (H series). The obtained organoclays were used as precursors for carbon-clay composite materials (C series). Both set of materials were characterized by X-ray diffraction (XRD), point of zero charge (pHPZC), N2 adsorption-desorption isotherms, Raman spectroscopy and electron paramagnetic resonance (EPR) analysis. XRD analysis of organomodified clays confirmed incorporation of HDTMA+ into interlamellar space of smectite. Series of carbonized clays showed constant d001 value of 1.4 nm. The pHPZC of two series differed indicating that carbonization changed the profile of pH dependent sites on the clay surface. Textural properties of the H series decreased throughout the series, while in the C series the most developed porous structure was obtained for sample where HDTMA+ loading was equal to cation exchange capacity. Raman spectroscopy showed that amorphous carbon was formed during carbonization process. The obtained materials were used as modifiers of carbon paste electrode and investigated using electrochemical impedance spectroscopy, cyclic voltammetry and square wave voltammetry. The comparison of electrochemical behavior of H series and C series showed the importance of interlamellar species for charge transfer process. The investigation of influence of composition of carbon paste and form of added carbon showed that performance of carbon-clay based electrodes depended on synergy of different factors. © 2018 Elsevier Ltd
T2  - Electrochimica Acta
T1  - Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay
VL  - 296
SP  - 387
EP  - 396
DO  - 10.1016/j.electacta.2018.11.031
ER  - 

@article{
author = "Jović-Jovičić, Nataša P. and Mojović, Miloš D. and Stanković, Dalibor M. and Vasiljević-Nedić, Bojana and Milutinović-Nikolić, Aleksandra D. and Banković, Predrag T. and Mojović, Zorica D.",
year = "2019",
abstract = "Series of alkylammonium modified smectites with different alkylammoinum/clay ratios was synthesized (H series). The obtained organoclays were used as precursors for carbon-clay composite materials (C series). Both set of materials were characterized by X-ray diffraction (XRD), point of zero charge (pHPZC), N2 adsorption-desorption isotherms, Raman spectroscopy and electron paramagnetic resonance (EPR) analysis. XRD analysis of organomodified clays confirmed incorporation of HDTMA+ into interlamellar space of smectite. Series of carbonized clays showed constant d001 value of 1.4 nm. The pHPZC of two series differed indicating that carbonization changed the profile of pH dependent sites on the clay surface. Textural properties of the H series decreased throughout the series, while in the C series the most developed porous structure was obtained for sample where HDTMA+ loading was equal to cation exchange capacity. Raman spectroscopy showed that amorphous carbon was formed during carbonization process. The obtained materials were used as modifiers of carbon paste electrode and investigated using electrochemical impedance spectroscopy, cyclic voltammetry and square wave voltammetry. The comparison of electrochemical behavior of H series and C series showed the importance of interlamellar species for charge transfer process. The investigation of influence of composition of carbon paste and form of added carbon showed that performance of carbon-clay based electrodes depended on synergy of different factors. © 2018 Elsevier Ltd",
journal = "Electrochimica Acta",
title = "Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay",
volume = "296",
pages = "387-396",
doi = "10.1016/j.electacta.2018.11.031"
}

Jović-Jovičić, N. P., Mojović, M. D., Stanković, D. M., Vasiljević-Nedić, B., Milutinović-Nikolić, A. D., Banković, P. T.,& Mojović, Z. D.. (2019). Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay. in Electrochimica Acta, 296, 387-396.
https://doi.org/10.1016/j.electacta.2018.11.031

Jović-Jovičić NP, Mojović MD, Stanković DM, Vasiljević-Nedić B, Milutinović-Nikolić AD, Banković PT, Mojović ZD. Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay. in Electrochimica Acta. 2019;296:387-396.
doi:10.1016/j.electacta.2018.11.031 .

Jović-Jovičić, Nataša P., Mojović, Miloš D., Stanković, Dalibor M., Vasiljević-Nedić, Bojana, Milutinović-Nikolić, Aleksandra D., Banković, Predrag T., Mojović, Zorica D., "Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay" in Electrochimica Acta, 296 (2019):387-396,
https://doi.org/10.1016/j.electacta.2018.11.031 . .