TY  - JOUR
AU  - Krstajić Pajić, Mila N.
AU  - Dobrota, Ana S.
AU  - Mazare, Anca
AU  - Đurđić, Slađana Z.
AU  - Hwang, Imgon
AU  - Skorodumova, Natalia V.
AU  - Manojlović, Dragan D.
AU  - Vasilić, Rastko
AU  - Pašti, Igor A.
AU  - Schmuki, Patrik
AU  - Lačnjevac, Uroš
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6277
AB  - Efficient cathodes for the hydrogen evolution reaction (HER) in acidic water electrolysis rely on the use of expensive platinum group metals (PGMs). However, to achieve economically viable operation, both the content of PGMs must be reduced and their intrinsically strong H adsorption mitigated. Herein, we show that the surface effects of hydrogenated TiO2 nanotube (TNT) arrays can make osmium, a so far less-explored PGM, a highly active HER electrocatalyst. These defect-rich TiO2 nanostructures provide an interactive scaffold for the galvanic deposition of Os particles with modulated adsorption properties. Through systematic investigations, we identify the synthesis conditions (OsCl3 concentration/temperature/reaction time) that yield a progressive improvement in Os deposition rate and mass loading, thereby decreasing the HER overpotential. At the same time, the Os particles deposited by this procedure remain mainly sub-nanometric and entirely cover the inner tube walls. An optimally balanced Os@TNT composite prepared at 3 mM/55 °C/30 min exhibits a record low overpotential (η) of 61 mV at a current density of 100 mA cm–2, a high mass activity of 20.8 A mgOs–1 at 80 mV, and a stable performance in an acidic medium. Density functional theory calculations indicate the existence of strong interactions between the hydrogenated TiO2 surface and small Os clusters, which may weaken the Os–H* binding strength and thus boost the intrinsic HER activity of Os centers. The results presented in this study offer new directions for the fabrication of cost-effective PGM-based catalysts and a better understanding of the synergistic electronic interactions at the PGM|TiO2 interface.
PB  - American Chemical Society
T2  - ACS Applied Materials & Interfaces
T1  - Activation of Osmium by the Surface Effects of Hydrogenated TiO2 Nanotube Arrays for Enhanced Hydrogen Evolution Reaction Performance
VL  - 15
IS  - 26
SP  - 31459
EP  - 31469
DO  - 10.1021/acsami.3c04498
ER  - 

@article{
author = "Krstajić Pajić, Mila N. and Dobrota, Ana S. and Mazare, Anca and Đurđić, Slađana Z. and Hwang, Imgon and Skorodumova, Natalia V. and Manojlović, Dragan D. and Vasilić, Rastko and Pašti, Igor A. and Schmuki, Patrik and Lačnjevac, Uroš",
year = "2023",
abstract = "Efficient cathodes for the hydrogen evolution reaction (HER) in acidic water electrolysis rely on the use of expensive platinum group metals (PGMs). However, to achieve economically viable operation, both the content of PGMs must be reduced and their intrinsically strong H adsorption mitigated. Herein, we show that the surface effects of hydrogenated TiO2 nanotube (TNT) arrays can make osmium, a so far less-explored PGM, a highly active HER electrocatalyst. These defect-rich TiO2 nanostructures provide an interactive scaffold for the galvanic deposition of Os particles with modulated adsorption properties. Through systematic investigations, we identify the synthesis conditions (OsCl3 concentration/temperature/reaction time) that yield a progressive improvement in Os deposition rate and mass loading, thereby decreasing the HER overpotential. At the same time, the Os particles deposited by this procedure remain mainly sub-nanometric and entirely cover the inner tube walls. An optimally balanced Os@TNT composite prepared at 3 mM/55 °C/30 min exhibits a record low overpotential (η) of 61 mV at a current density of 100 mA cm–2, a high mass activity of 20.8 A mgOs–1 at 80 mV, and a stable performance in an acidic medium. Density functional theory calculations indicate the existence of strong interactions between the hydrogenated TiO2 surface and small Os clusters, which may weaken the Os–H* binding strength and thus boost the intrinsic HER activity of Os centers. The results presented in this study offer new directions for the fabrication of cost-effective PGM-based catalysts and a better understanding of the synergistic electronic interactions at the PGM|TiO2 interface.",
publisher = "American Chemical Society",
journal = "ACS Applied Materials & Interfaces",
title = "Activation of Osmium by the Surface Effects of Hydrogenated TiO2 Nanotube Arrays for Enhanced Hydrogen Evolution Reaction Performance",
volume = "15",
number = "26",
pages = "31459-31469",
doi = "10.1021/acsami.3c04498"
}

Krstajić Pajić, M. N., Dobrota, A. S., Mazare, A., Đurđić, S. Z., Hwang, I., Skorodumova, N. V., Manojlović, D. D., Vasilić, R., Pašti, I. A., Schmuki, P.,& Lačnjevac, U.. (2023). Activation of Osmium by the Surface Effects of Hydrogenated TiO2 Nanotube Arrays for Enhanced Hydrogen Evolution Reaction Performance. in ACS Applied Materials & Interfaces
American Chemical Society., 15(26), 31459-31469.
https://doi.org/10.1021/acsami.3c04498

Krstajić Pajić MN, Dobrota AS, Mazare A, Đurđić SZ, Hwang I, Skorodumova NV, Manojlović DD, Vasilić R, Pašti IA, Schmuki P, Lačnjevac U. Activation of Osmium by the Surface Effects of Hydrogenated TiO2 Nanotube Arrays for Enhanced Hydrogen Evolution Reaction Performance. in ACS Applied Materials & Interfaces. 2023;15(26):31459-31469.
doi:10.1021/acsami.3c04498 .

Krstajić Pajić, Mila N., Dobrota, Ana S., Mazare, Anca, Đurđić, Slađana Z., Hwang, Imgon, Skorodumova, Natalia V., Manojlović, Dragan D., Vasilić, Rastko, Pašti, Igor A., Schmuki, Patrik, Lačnjevac, Uroš, "Activation of Osmium by the Surface Effects of Hydrogenated TiO2 Nanotube Arrays for Enhanced Hydrogen Evolution Reaction Performance" in ACS Applied Materials & Interfaces, 15, no. 26 (2023):31459-31469,
https://doi.org/10.1021/acsami.3c04498 . .

TY  - JOUR
AU  - Veljović Jovanović, Sonja
AU  - Kasalica, Bećko
AU  - Miletić, Katarina
AU  - Vidović, Marija
AU  - Šušić, Nikola
AU  - Jeremić, Dejan
AU  - Belča, Ivan
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6380
AB  - Chloroplast movement rapidly ameliorates the effects of suboptimal light intensity by accumulating along the periclinal cell walls, as well as the effects of excess light by shifting to the anticlinal cell walls. These acclimation responses are triggered by phototropins located at the plasma membrane and chloroplast envelope. Here, we used a recently developed non-invasive system sensitive to very small changes in red light leaf transmittance to perform long-term continuous measurements of dark–light transitions. As a model system, we used variegated Pelargonium zonale leaves containing green sectors (GS) with fully developed chloroplasts and achlorophyllous, white sectors (WS) with undifferentiated plastids, and higher phototropin expression levels. We observed biphasic changes in the red-light transmittance and oscillations triggered by medium intensities of white light, described by a transient peak preceded by a constant decrease in transmittance level. A slight change in red-light transmittance was recorded even in WS. Furthermore, the chloroplast position at lower light intensities affected the rapid light curves, while high light intensity decreased saturated electron transport, maximum quantum efficiency of photosystem II, and increased non-photochemical quenching of chlorophyll fluorescence and epidermal flavonoids. Our results extend the knowledge of light-dependent chloroplast movements and thus contribute to a better understanding of their role in regulating photosynthesis under fluctuating light conditions.
PB  - MDPI
T2  - International Journal of Molecular Sciences
T1  - Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency
VL  - 24
IS  - 18
SP  - 14265
DO  - 10.3390/ijms241814265
ER  - 

@article{
author = "Veljović Jovanović, Sonja and Kasalica, Bećko and Miletić, Katarina and Vidović, Marija and Šušić, Nikola and Jeremić, Dejan and Belča, Ivan",
year = "2023",
abstract = "Chloroplast movement rapidly ameliorates the effects of suboptimal light intensity by accumulating along the periclinal cell walls, as well as the effects of excess light by shifting to the anticlinal cell walls. These acclimation responses are triggered by phototropins located at the plasma membrane and chloroplast envelope. Here, we used a recently developed non-invasive system sensitive to very small changes in red light leaf transmittance to perform long-term continuous measurements of dark–light transitions. As a model system, we used variegated Pelargonium zonale leaves containing green sectors (GS) with fully developed chloroplasts and achlorophyllous, white sectors (WS) with undifferentiated plastids, and higher phototropin expression levels. We observed biphasic changes in the red-light transmittance and oscillations triggered by medium intensities of white light, described by a transient peak preceded by a constant decrease in transmittance level. A slight change in red-light transmittance was recorded even in WS. Furthermore, the chloroplast position at lower light intensities affected the rapid light curves, while high light intensity decreased saturated electron transport, maximum quantum efficiency of photosystem II, and increased non-photochemical quenching of chlorophyll fluorescence and epidermal flavonoids. Our results extend the knowledge of light-dependent chloroplast movements and thus contribute to a better understanding of their role in regulating photosynthesis under fluctuating light conditions.",
publisher = "MDPI",
journal = "International Journal of Molecular Sciences",
title = "Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency",
volume = "24",
number = "18",
pages = "14265",
doi = "10.3390/ijms241814265"
}

Veljović Jovanović, S., Kasalica, B., Miletić, K., Vidović, M., Šušić, N., Jeremić, D.,& Belča, I.. (2023). Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency. in International Journal of Molecular Sciences
MDPI., 24(18), 14265.
https://doi.org/10.3390/ijms241814265

Veljović Jovanović S, Kasalica B, Miletić K, Vidović M, Šušić N, Jeremić D, Belča I. Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency. in International Journal of Molecular Sciences. 2023;24(18):14265.
doi:10.3390/ijms241814265 .

Veljović Jovanović, Sonja, Kasalica, Bećko, Miletić, Katarina, Vidović, Marija, Šušić, Nikola, Jeremić, Dejan, Belča, Ivan, "Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency" in International Journal of Molecular Sciences, 24, no. 18 (2023):14265,
https://doi.org/10.3390/ijms241814265 . .

TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Mirković, Miljana
AU  - Pavlović, Vera P.
AU  - Petronijević, Ivan
AU  - Stanković, Dalibor
AU  - Jeremić, Dejan
AU  - Uskoković, Vuk
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6254
AB  - The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale.
PB  - Elsevier
T2  - Ceramics International
T1  - Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition
VL  - 49
IS  - 14, Part A
SP  - 23491
EP  - 23498
DO  - 10.1016/j.ceramint.2023.04.182
ER  - 

@article{
author = "Anđelković, Ljubica and Šuljagić, Marija and Mirković, Miljana and Pavlović, Vera P. and Petronijević, Ivan and Stanković, Dalibor and Jeremić, Dejan and Uskoković, Vuk",
year = "2023",
abstract = "The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition",
volume = "49",
number = "14, Part A",
pages = "23491-23498",
doi = "10.1016/j.ceramint.2023.04.182"
}

Anđelković, L., Šuljagić, M., Mirković, M., Pavlović, V. P., Petronijević, I., Stanković, D., Jeremić, D.,& Uskoković, V.. (2023). Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International
Elsevier., 49(14, Part A), 23491-23498.
https://doi.org/10.1016/j.ceramint.2023.04.182

Anđelković L, Šuljagić M, Mirković M, Pavlović VP, Petronijević I, Stanković D, Jeremić D, Uskoković V. Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International. 2023;49(14, Part A):23491-23498.
doi:10.1016/j.ceramint.2023.04.182 .

Anđelković, Ljubica, Šuljagić, Marija, Mirković, Miljana, Pavlović, Vera P., Petronijević, Ivan, Stanković, Dalibor, Jeremić, Dejan, Uskoković, Vuk, "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition" in Ceramics International, 49, no. 14, Part A (2023):23491-23498,
https://doi.org/10.1016/j.ceramint.2023.04.182 . .

TY  - JOUR
AU  - Korać Jačić, Jelena
AU  - Bajuk-Bogdanović, Danica
AU  - Savić, Slađana D.
AU  - Božić Cvijan, Bojana
AU  - Spasojević, Milica
AU  - MIlenković, Milica R.
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5881
AB  - Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV–Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.
PB  - Elsevier
T2  - Journal of Inorganic Biochemistry
T1  - Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH
VL  - 243
SP  - 112181
DO  - 10.1016/j.jinorgbio.2023.112181
ER  - 

@article{
author = "Korać Jačić, Jelena and Bajuk-Bogdanović, Danica and Savić, Slađana D. and Božić Cvijan, Bojana and Spasojević, Milica and MIlenković, Milica R.",
year = "2023",
abstract = "Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV–Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.",
publisher = "Elsevier",
journal = "Journal of Inorganic Biochemistry",
title = "Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH",
volume = "243",
pages = "112181",
doi = "10.1016/j.jinorgbio.2023.112181"
}

Korać Jačić, J., Bajuk-Bogdanović, D., Savić, S. D., Božić Cvijan, B., Spasojević, M.,& MIlenković, M. R.. (2023). Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH. in Journal of Inorganic Biochemistry
Elsevier., 243, 112181.
https://doi.org/10.1016/j.jinorgbio.2023.112181

Korać Jačić J, Bajuk-Bogdanović D, Savić SD, Božić Cvijan B, Spasojević M, MIlenković MR. Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH. in Journal of Inorganic Biochemistry. 2023;243:112181.
doi:10.1016/j.jinorgbio.2023.112181 .

Korać Jačić, Jelena, Bajuk-Bogdanović, Danica, Savić, Slađana D., Božić Cvijan, Bojana, Spasojević, Milica, MIlenković, Milica R., "Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH" in Journal of Inorganic Biochemistry, 243 (2023):112181,
https://doi.org/10.1016/j.jinorgbio.2023.112181 . .

TY  - JOUR
AU  - Korać Jačić, Jelena
AU  - Bajuk-Bogdanović, Danica
AU  - Savić, Slađana D.
AU  - Božić Cvijan, Bojana
AU  - Spasojević, Milica
AU  - MIlenković, Milica R.
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5882
AB  - Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV–Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.
PB  - Elsevier
T2  - Journal of Inorganic Biochemistry
T1  - Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH
VL  - 243
SP  - 112181
DO  - 10.1016/j.jinorgbio.2023.112181
ER  - 

@article{
author = "Korać Jačić, Jelena and Bajuk-Bogdanović, Danica and Savić, Slađana D. and Božić Cvijan, Bojana and Spasojević, Milica and MIlenković, Milica R.",
year = "2023",
abstract = "Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV–Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.",
publisher = "Elsevier",
journal = "Journal of Inorganic Biochemistry",
title = "Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH",
volume = "243",
pages = "112181",
doi = "10.1016/j.jinorgbio.2023.112181"
}

Korać Jačić, J., Bajuk-Bogdanović, D., Savić, S. D., Božić Cvijan, B., Spasojević, M.,& MIlenković, M. R.. (2023). Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH. in Journal of Inorganic Biochemistry
Elsevier., 243, 112181.
https://doi.org/10.1016/j.jinorgbio.2023.112181

Korać Jačić J, Bajuk-Bogdanović D, Savić SD, Božić Cvijan B, Spasojević M, MIlenković MR. Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH. in Journal of Inorganic Biochemistry. 2023;243:112181.
doi:10.1016/j.jinorgbio.2023.112181 .

Korać Jačić, Jelena, Bajuk-Bogdanović, Danica, Savić, Slađana D., Božić Cvijan, Bojana, Spasojević, Milica, MIlenković, Milica R., "Coordination of hydralazine with Cu2+ at acidic pH promotes its oxidative degradation at neutral pH" in Journal of Inorganic Biochemistry, 243 (2023):112181,
https://doi.org/10.1016/j.jinorgbio.2023.112181 . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Stanković, D.
AU  - Mirković, M.
AU  - Pavlović, V.
AU  - Petronijević, I.
AU  - Jeremić, D.
AU  - Anđelković, Ljubica
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5793
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
T1  - Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid
VL  - 67
SP  - S13
EP  - S21
DO  - 10.1134/S003602362260201X
ER  - 

@article{
author = "Šuljagić, Marija and Stanković, D. and Mirković, M. and Pavlović, V. and Petronijević, I. and Jeremić, D. and Anđelković, Ljubica",
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",
title = "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid",
volume = "67",
pages = "S13-S21",
doi = "10.1134/S003602362260201X"
}

Šuljagić, M., Stanković, D., Mirković, M., Pavlović, V., Petronijević, I., Jeremić, D.,& Anđelković, 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, Anđelković 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, Marija, Stanković, D., Mirković, M., Pavlović, V., Petronijević, I., Jeremić, D., Anđelković, Ljubica, "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  - Šuljagić, Marija
AU  - Anđelković, Ljubica
AU  - Iskrenović, Predrag
AU  - Nikolić, Aleksandar S.
AU  - Milenković, Milica R.
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4423
AB  - The light-transmitting measurements at the 655 nm wavelength have been performed through starch-coated cobalt ferrite ferrofluids synthesized by well-established synthetic methods, i.e., coprecipitation, mechanochemical, ultrasonically assisted coprecipitation, microemulsion, and microwave-assisted hydrothermal syntheses, exposed to an external magnetic field of 200–400 mT. The investigated samples can be divided into the two groups. The first is where the samples showed higher rate of agglomeration and sedimentation effects. The group of samples synthesized by microemulsion, microwave-assisted hydrothermal method, and mechanochemical method showed less pronounced rate of chain formation. Such measurements present good method for the preliminary selection of possible magnetic resonance imaging (MRI) contrast agents between differently synthesized ferrite suspensions.
PB  - Springer Nature
T2  - JETP Letters
T1  - Light-Transmitting Measurements through Starch-Coated Cobalt Ferrite Ferrofluids Exposed to an External Magnetic Field
VL  - 113
IS  - 4
SP  - 238
EP  - 241
DO  - 10.1134/S0021364021040056
ER  - 

@article{
author = "Šuljagić, Marija and Anđelković, Ljubica and Iskrenović, Predrag and Nikolić, Aleksandar S. and Milenković, Milica R.",
year = "2021",
abstract = "The light-transmitting measurements at the 655 nm wavelength have been performed through starch-coated cobalt ferrite ferrofluids synthesized by well-established synthetic methods, i.e., coprecipitation, mechanochemical, ultrasonically assisted coprecipitation, microemulsion, and microwave-assisted hydrothermal syntheses, exposed to an external magnetic field of 200–400 mT. The investigated samples can be divided into the two groups. The first is where the samples showed higher rate of agglomeration and sedimentation effects. The group of samples synthesized by microemulsion, microwave-assisted hydrothermal method, and mechanochemical method showed less pronounced rate of chain formation. Such measurements present good method for the preliminary selection of possible magnetic resonance imaging (MRI) contrast agents between differently synthesized ferrite suspensions.",
publisher = "Springer Nature",
journal = "JETP Letters",
title = "Light-Transmitting Measurements through Starch-Coated Cobalt Ferrite Ferrofluids Exposed to an External Magnetic Field",
volume = "113",
number = "4",
pages = "238-241",
doi = "10.1134/S0021364021040056"
}

Šuljagić, M., Anđelković, L., Iskrenović, P., Nikolić, A. S.,& Milenković, M. R.. (2021). Light-Transmitting Measurements through Starch-Coated Cobalt Ferrite Ferrofluids Exposed to an External Magnetic Field. in JETP Letters
Springer Nature., 113(4), 238-241.
https://doi.org/10.1134/S0021364021040056

Šuljagić M, Anđelković L, Iskrenović P, Nikolić AS, Milenković MR. Light-Transmitting Measurements through Starch-Coated Cobalt Ferrite Ferrofluids Exposed to an External Magnetic Field. in JETP Letters. 2021;113(4):238-241.
doi:10.1134/S0021364021040056 .

Šuljagić, Marija, Anđelković, Ljubica, Iskrenović, Predrag, Nikolić, Aleksandar S., Milenković, Milica R., "Light-Transmitting Measurements through Starch-Coated Cobalt Ferrite Ferrofluids Exposed to an External Magnetic Field" in JETP Letters, 113, no. 4 (2021):238-241,
https://doi.org/10.1134/S0021364021040056 . .