TY  - JOUR
AU  - Šuljagić, M.
AU  - Stanković, D.
AU  - Mirković, M.
AU  - Pavlović, V.
AU  - Petronijević, I.
AU  - Jeremić, D.
AU  - Andjelković, L.
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6259
AB  - Abstract: Nickel ferrite nanoparticles were synthesized via thermal decomposition of β-diketonato complexes of nickel(II) and iron(III). The mechano-chemical activation of the complex precursors was used to ensure the increase in the reaction activity and consequently reduce thermal decomposition temperature. The prepared sample was thoroughly characterized by X-ray powder diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). X-ray powder diffraction and FT-IR confirmed the spinel phase of the investigated powder. SEM and TEM revealed the ultrafine nature of nanosized polygonal particles, with a pronounced agglomeration effect. The capacity for electrocatalytic applications was examined using cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS). Electrocatalytic measurements pointed out that the addition of 5% of nickel ferrite as a modifier to carbon paste electrode caused a current increase and a decrease of the EIS semicircle. Further increase in the amount of the modifier decreased heterogeneity of the electrode surface and served as excellent sensor for the detection of gallic acid in the concentration range from 1 to 10 µM with the detection limit of 0.27 µM. This unambiguously indicated the significant improvement in electrode transfer rate and better characteristics of the diffusion layer. © 2022, Pleiades Publishing, Ltd.
T2  - Russian Journal of Inorganic Chemistry
T2  - Russian Journal of Inorganic Chemistry
T1  - Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid
EP  - S21
SP  - S13
VL  - 67
DO  - 10.1134/S003602362260201X
ER  - 

@article{
author = "Šuljagić, M. and Stanković, D. and Mirković, M. and Pavlović, V. and Petronijević, I. and Jeremić, D. and Andjelković, L.",
year = "2022",
abstract = "Abstract: Nickel ferrite nanoparticles were synthesized via thermal decomposition of β-diketonato complexes of nickel(II) and iron(III). The mechano-chemical activation of the complex precursors was used to ensure the increase in the reaction activity and consequently reduce thermal decomposition temperature. The prepared sample was thoroughly characterized by X-ray powder diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). X-ray powder diffraction and FT-IR confirmed the spinel phase of the investigated powder. SEM and TEM revealed the ultrafine nature of nanosized polygonal particles, with a pronounced agglomeration effect. The capacity for electrocatalytic applications was examined using cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS). Electrocatalytic measurements pointed out that the addition of 5% of nickel ferrite as a modifier to carbon paste electrode caused a current increase and a decrease of the EIS semicircle. Further increase in the amount of the modifier decreased heterogeneity of the electrode surface and served as excellent sensor for the detection of gallic acid in the concentration range from 1 to 10 µM with the detection limit of 0.27 µM. This unambiguously indicated the significant improvement in electrode transfer rate and better characteristics of the diffusion layer. © 2022, Pleiades Publishing, Ltd.",
journal = "Russian Journal of Inorganic Chemistry, Russian Journal of Inorganic Chemistry",
title = "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid",
pages = "S21-S13",
volume = "67",
doi = "10.1134/S003602362260201X"
}

Šuljagić, M., Stanković, D., Mirković, M., Pavlović, V., Petronijević, I., Jeremić, D.,& Andjelković, L.. (2022). Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. in Russian Journal of Inorganic Chemistry, 67, S13-S21.
https://doi.org/10.1134/S003602362260201X

Šuljagić M, Stanković D, Mirković M, Pavlović V, Petronijević I, Jeremić D, Andjelković L. Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. in Russian Journal of Inorganic Chemistry. 2022;67:S13-S21.
doi:10.1134/S003602362260201X .

Šuljagić, M., Stanković, D., Mirković, M., Pavlović, V., Petronijević, I., Jeremić, D., Andjelković, L., "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid" in Russian Journal of Inorganic Chemistry, 67 (2022):S13-S21,
https://doi.org/10.1134/S003602362260201X . .

TY  - JOUR
AU  - Filipović, S.
AU  - Obradović, N.
AU  - Andjelković, Lj.
AU  - Olćan, D.
AU  - Petrović, J.
AU  - Mirković, M.
AU  - Pavlović, V.
AU  - Jeremić, D.
AU  - Vlahović, B.
AU  - Đorđević, A.
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5835
AB  - Solid-state reaction between BaTiO3and Fe2O3was used to produce a multiferroic heterostructure composite. Commercial BaTiO3and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300°C for 6 h. Sintering at 1300 °C for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3with Fe2O3resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature.
PB  - International Institute for the Science of Sintering (IISS)
T2  - Science of Sintering
T1  - Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction
EP  - 8
IS  - 1
SP  - 1
VL  - 53
DO  - 10.2298/SOS2101001F
ER  - 

@article{
author = "Filipović, S. and Obradović, N. and Andjelković, Lj. and Olćan, D. and Petrović, J. and Mirković, M. and Pavlović, V. and Jeremić, D. and Vlahović, B. and Đorđević, A.",
year = "2021",
abstract = "Solid-state reaction between BaTiO3and Fe2O3was used to produce a multiferroic heterostructure composite. Commercial BaTiO3and Fe(NO3)3•9H2O were suspended in ethanol for 30 minutes in an ultrasound bath. The prepared mixture was thermally processed at 300°C for 6 h. Sintering at 1300 °C for 1 h resulted in a mixture of different phases, BaTiO3, BaFe12O19and Ba12Ti28Fe15O84, which were confirmed by x-ray powder diffraction. A dense microstructure with a small volume fraction of closed porosity was indicated by the scanning electron microscopy, while a homogeneous distribution of Fe ions over BaTiO3phase was visible from energy dispersive spectroscopy mapping. Doping of BaTiO3with Fe2O3resulted in formation of magnetic hexaferrite phases, as confirmed by dielectric measurements that showed a broadened maximum of the permittivity measured as a function of temperature.",
publisher = "International Institute for the Science of Sintering (IISS)",
journal = "Science of Sintering",
title = "Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction",
pages = "8-1",
number = "1",
volume = "53",
doi = "10.2298/SOS2101001F"
}

Filipović, S., Obradović, N., Andjelković, Lj., Olćan, D., Petrović, J., Mirković, M., Pavlović, V., Jeremić, D., Vlahović, B.,& Đorđević, A.. (2021). Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction. in Science of Sintering
International Institute for the Science of Sintering (IISS)., 53(1), 1-8.
https://doi.org/10.2298/SOS2101001F

Filipović S, Obradović N, Andjelković L, Olćan D, Petrović J, Mirković M, Pavlović V, Jeremić D, Vlahović B, Đorđević A. Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction. in Science of Sintering. 2021;53(1):1-8.
doi:10.2298/SOS2101001F .

Filipović, S., Obradović, N., Andjelković, Lj., Olćan, D., Petrović, J., Mirković, M., Pavlović, V., Jeremić, D., Vlahović, B., Đorđević, A., "Multiferroic heterostructure BaTiO3/ε-Fe2O3composite obtained by in situ reaction" in Science of Sintering, 53, no. 1 (2021):1-8,
https://doi.org/10.2298/SOS2101001F . .

TY  - JOUR
AU  - Bošković, I.
AU  - Vukčević, M.
AU  - Nenadović, Snežana S.
AU  - Mirković, M.
AU  - Stojmenović, M.
AU  - Pavlović, Vladimir
AU  - Kljajević, Ljiljana M.
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5129
AB  - Geopolymers are an emerging class of materials that offer an alternative to the Portland cement as the binder of structural concrete. One of the advantages is that the primary source of their production is waste alumosilicate materials from different industries. One of the key issues in geopolymer synthesis is the low level of mechanical properties due to porosity as well as the high activity of conductivity carriers. It can often lead to limited application possibilities, so the objective is to obtain an enhanced strength as well as decreased cracking tendency through microstructure modification. The introduction of Ca(OH)2, under certain pH conditions could lead to the filling-the-pores process and improving the mechanical properties. The aim was to understand the role that calcium plays in the geopolymer synthesis, and to define which reaction prevails under the synthesis conditions: formation of geopolymer gel or calcium silicate hydrate that contains aluminum substitution (CASH). The synthesis was performed with different raw materials (with or without red mud) and different alkalinity conditions. Ca(OH)2 was the obligatory supplement to both of the mixtures. Different techniques were performed for the testing of reaction products, as well as to define the microstructural changes as the generator of improved mechanical properties and changed electrical conductivity. The characteristics of the geopolymer's macrostructure were defined by means of an SEM analysis. Compressive strength and electrical conductivity are among the investigated product's properties. X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR) were used for the identification of various crystalline phases and an amorphous phase.
PB  - Institute of Metals Technology
T2  - Materiali in Tehnologije
T1  - Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2
EP  - 348
IS  - 3
SP  - 341
VL  - 53
DO  - 10.17222/mit.2018.130
ER  - 

@article{
author = "Bošković, I. and Vukčević, M. and Nenadović, Snežana S. and Mirković, M. and Stojmenović, M. and Pavlović, Vladimir and Kljajević, Ljiljana M.",
year = "2019",
abstract = "Geopolymers are an emerging class of materials that offer an alternative to the Portland cement as the binder of structural concrete. One of the advantages is that the primary source of their production is waste alumosilicate materials from different industries. One of the key issues in geopolymer synthesis is the low level of mechanical properties due to porosity as well as the high activity of conductivity carriers. It can often lead to limited application possibilities, so the objective is to obtain an enhanced strength as well as decreased cracking tendency through microstructure modification. The introduction of Ca(OH)2, under certain pH conditions could lead to the filling-the-pores process and improving the mechanical properties. The aim was to understand the role that calcium plays in the geopolymer synthesis, and to define which reaction prevails under the synthesis conditions: formation of geopolymer gel or calcium silicate hydrate that contains aluminum substitution (CASH). The synthesis was performed with different raw materials (with or without red mud) and different alkalinity conditions. Ca(OH)2 was the obligatory supplement to both of the mixtures. Different techniques were performed for the testing of reaction products, as well as to define the microstructural changes as the generator of improved mechanical properties and changed electrical conductivity. The characteristics of the geopolymer's macrostructure were defined by means of an SEM analysis. Compressive strength and electrical conductivity are among the investigated product's properties. X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR) were used for the identification of various crystalline phases and an amorphous phase.",
publisher = "Institute of Metals Technology",
journal = "Materiali in Tehnologije",
title = "Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2",
pages = "348-341",
number = "3",
volume = "53",
doi = "10.17222/mit.2018.130"
}

Bošković, I., Vukčević, M., Nenadović, S. S., Mirković, M., Stojmenović, M., Pavlović, V.,& Kljajević, L. M.. (2019). Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2. in Materiali in Tehnologije
Institute of Metals Technology., 53(3), 341-348.
https://doi.org/10.17222/mit.2018.130

Bošković I, Vukčević M, Nenadović SS, Mirković M, Stojmenović M, Pavlović V, Kljajević LM. Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2. in Materiali in Tehnologije. 2019;53(3):341-348.
doi:10.17222/mit.2018.130 .

Bošković, I., Vukčević, M., Nenadović, Snežana S., Mirković, M., Stojmenović, M., Pavlović, Vladimir, Kljajević, Ljiljana M., "Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2" in Materiali in Tehnologije, 53, no. 3 (2019):341-348,
https://doi.org/10.17222/mit.2018.130 . .