TY  - JOUR
AU  - Ognjanović, Miloš
AU  - Stanković, Dalibor M.
AU  - Jaćimović, Željko K.
AU  - Kosović-Perutović, Milica
AU  - Mariano, José F. M. L.
AU  - Krehula, Stjepko
AU  - Musić, Svetozar
AU  - Antić, Bratislav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10215
AB  - Nickel acetate tetrahydrate (NAT) sample series were used to modify screen-printed carbon electrodes (SPCE). The samples were hybrid Ni/NiO nanocomposites, where the NiO phase increased with an applied treatment temperature. Results of electrochemical measurements pointed that the Ni/NiO550/SPCE-modified electrode had the best analytical performance toward the detection of riboflavin (RF). The Ni/NiO550/SPCE-based sensor showed linear response with RF in the concentration range of 0.5–75 μM and 0.15 μM LOD in BRBS. Sensor offered fast response time, good repeatability, and selectivity with an RSD of 1.4 %. Our results show that the Ni:NiO nanocomposite ratio strongly influenced the electroanalytical performance of SPCE.
T2  - Electroanalysis
T1  - Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate
VL  - 34
IS  - 9
SP  - 1431
EP  - 1440
DO  - 10.1002/elan.202100602
ER  - 

@article{
author = "Ognjanović, Miloš and Stanković, Dalibor M. and Jaćimović, Željko K. and Kosović-Perutović, Milica and Mariano, José F. M. L. and Krehula, Stjepko and Musić, Svetozar and Antić, Bratislav",
year = "2022",
abstract = "Nickel acetate tetrahydrate (NAT) sample series were used to modify screen-printed carbon electrodes (SPCE). The samples were hybrid Ni/NiO nanocomposites, where the NiO phase increased with an applied treatment temperature. Results of electrochemical measurements pointed that the Ni/NiO550/SPCE-modified electrode had the best analytical performance toward the detection of riboflavin (RF). The Ni/NiO550/SPCE-based sensor showed linear response with RF in the concentration range of 0.5–75 μM and 0.15 μM LOD in BRBS. Sensor offered fast response time, good repeatability, and selectivity with an RSD of 1.4 %. Our results show that the Ni:NiO nanocomposite ratio strongly influenced the electroanalytical performance of SPCE.",
journal = "Electroanalysis",
title = "Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate",
volume = "34",
number = "9",
pages = "1431-1440",
doi = "10.1002/elan.202100602"
}

Ognjanović, M., Stanković, D. M., Jaćimović, Ž. K., Kosović-Perutović, M., Mariano, J. F. M. L., Krehula, S., Musić, S.,& Antić, B.. (2022). Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate. in Electroanalysis, 34(9), 1431-1440.
https://doi.org/10.1002/elan.202100602

Ognjanović M, Stanković DM, Jaćimović ŽK, Kosović-Perutović M, Mariano JFML, Krehula S, Musić S, Antić B. Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate. in Electroanalysis. 2022;34(9):1431-1440.
doi:10.1002/elan.202100602 .

Ognjanović, Miloš, Stanković, Dalibor M., Jaćimović, Željko K., Kosović-Perutović, Milica, Mariano, José F. M. L., Krehula, Stjepko, Musić, Svetozar, Antić, Bratislav, "Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate" in Electroanalysis, 34, no. 9 (2022):1431-1440,
https://doi.org/10.1002/elan.202100602 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Rajnak, Michal
AU  - Mariano, Jose F. M. L.
AU  - Lazarov, Nenad Đ.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10199
AB  - The characterization of nanocomposite samples which contain Cu, Fe-species, prepared by the sol-gel method, was established by Nikolić et al., in a previous article (Nikolić et al. in Journal of Solid State Physics 513:1, 2021). In this study, the magnetic behavior of nanocomposite samples was examined. The basic parameters of the room- and low-temperature magnetic hysteresis loops are discussed. To better describe the shape of magnetic hysteresis loop, the authors proposed to consider additional parameters - measures of the exterior angles of the hysteresis curve. Behavior of hysteresis parameters and exterior angles, caused by annealing treatment, was investigated by measuring hysteresis loops at two measured temperatures: 298K, and 5K. Correlation between changes in the behavior of hysteresis parameters and exterior angles was discussed. An attempt has been made to attribute physical meaning to chosen measured angles, which would allow a better understanding of the magnetic hysteresis curve. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Journal of Superconductivity and Novel Magnetism
T1  - Magnetic Hysteresis Loops Revisited: Step Closer to Understand the Role of Exterior Angles
VL  - 35
IS  - 5
SP  - 1353
EP  - 1373
DO  - 10.1007/s10948-021-06118-z
ER  - 

@article{
author = "Nikolić, Violeta N. and Rajnak, Michal and Mariano, Jose F. M. L. and Lazarov, Nenad Đ.",
year = "2022",
abstract = "The characterization of nanocomposite samples which contain Cu, Fe-species, prepared by the sol-gel method, was established by Nikolić et al., in a previous article (Nikolić et al. in Journal of Solid State Physics 513:1, 2021). In this study, the magnetic behavior of nanocomposite samples was examined. The basic parameters of the room- and low-temperature magnetic hysteresis loops are discussed. To better describe the shape of magnetic hysteresis loop, the authors proposed to consider additional parameters - measures of the exterior angles of the hysteresis curve. Behavior of hysteresis parameters and exterior angles, caused by annealing treatment, was investigated by measuring hysteresis loops at two measured temperatures: 298K, and 5K. Correlation between changes in the behavior of hysteresis parameters and exterior angles was discussed. An attempt has been made to attribute physical meaning to chosen measured angles, which would allow a better understanding of the magnetic hysteresis curve. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Journal of Superconductivity and Novel Magnetism",
title = "Magnetic Hysteresis Loops Revisited: Step Closer to Understand the Role of Exterior Angles",
volume = "35",
number = "5",
pages = "1353-1373",
doi = "10.1007/s10948-021-06118-z"
}

Nikolić, V. N., Rajnak, M., Mariano, J. F. M. L.,& Lazarov, N. Đ.. (2022). Magnetic Hysteresis Loops Revisited: Step Closer to Understand the Role of Exterior Angles. in Journal of Superconductivity and Novel Magnetism, 35(5), 1353-1373.
https://doi.org/10.1007/s10948-021-06118-z

Nikolić VN, Rajnak M, Mariano JFML, Lazarov NĐ. Magnetic Hysteresis Loops Revisited: Step Closer to Understand the Role of Exterior Angles. in Journal of Superconductivity and Novel Magnetism. 2022;35(5):1353-1373.
doi:10.1007/s10948-021-06118-z .

Nikolić, Violeta N., Rajnak, Michal, Mariano, Jose F. M. L., Lazarov, Nenad Đ., "Magnetic Hysteresis Loops Revisited: Step Closer to Understand the Role of Exterior Angles" in Journal of Superconductivity and Novel Magnetism, 35, no. 5 (2022):1353-1373,
https://doi.org/10.1007/s10948-021-06118-z . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Vasić, Milica
AU  - Milikić, Jadranka
AU  - Mariano, Jose F.M.L.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9131
AB  - Abstract: The nanocomposite samples, containing copper and iron species in the silica matrix, were prepared by annealing at temperatures up to 1100°C. The samples were investigated by X-ray diffraction analysis, Fourier transform infrared spectroscopy, and cyclic voltammetry. The results of the performed study depict to the presence of a temperature gradient, which acts on the sample during the annealing treatment in the furnace. For the first time, the influence of the temperature gradient on the formation mechanism of the samples was discussed. © 2021, Pleiades Publishing, Ltd.
T2  - Physics of the Solid State
T1  - The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method
VL  - 63
IS  - 2
SP  - 332
EP  - 354
DO  - 10.1134/S1063783421020207
ER  - 

@article{
author = "Nikolić, Violeta N. and Vasić, Milica and Milikić, Jadranka and Mariano, Jose F.M.L.",
year = "2021",
abstract = "Abstract: The nanocomposite samples, containing copper and iron species in the silica matrix, were prepared by annealing at temperatures up to 1100°C. The samples were investigated by X-ray diffraction analysis, Fourier transform infrared spectroscopy, and cyclic voltammetry. The results of the performed study depict to the presence of a temperature gradient, which acts on the sample during the annealing treatment in the furnace. For the first time, the influence of the temperature gradient on the formation mechanism of the samples was discussed. © 2021, Pleiades Publishing, Ltd.",
journal = "Physics of the Solid State",
title = "The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method",
volume = "63",
number = "2",
pages = "332-354",
doi = "10.1134/S1063783421020207"
}

Nikolić, V. N., Vasić, M., Milikić, J.,& Mariano, J. F.M.L.. (2021). The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method. in Physics of the Solid State, 63(2), 332-354.
https://doi.org/10.1134/S1063783421020207

Nikolić VN, Vasić M, Milikić J, Mariano JF. The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method. in Physics of the Solid State. 2021;63(2):332-354.
doi:10.1134/S1063783421020207 .

Nikolić, Violeta N., Vasić, Milica, Milikić, Jadranka, Mariano, Jose F.M.L., "The Influence of Thermal Treatment on the Formation Mechanism of the Cu, Fe-Containing Nanocomposite Material Synthesized by the Sol–Gel Method" in Physics of the Solid State, 63, no. 2 (2021):332-354,
https://doi.org/10.1134/S1063783421020207 . .

TY  - JOUR
AU  - Knežević, Sara
AU  - Ognjanović, Miloš
AU  - Nedić, Nemanja
AU  - Mariano, Jose F. M. L.
AU  - Milanović, Zorana
AU  - Petković, Branka B.
AU  - Antić, Bratislav
AU  - Vranješ-Đurić, Sanja
AU  - Stanković, Dalibor M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8834
AB  - In order to ensure high food quality, one of the prime importance is the detection and quantification of histamine, well known marine food poison. In this work, we constructed novel electrochemical biosensor for the detection of histamine based on gold nanoparticles decorated on manganese dioxide (Au/MnO2) and used for modification of screen-printed carbon electrode (Au/MnO2@SPCE). The constructed sensor was then used for the estimation of histamine content in a single drop. Materials used in this study were synthesized and characterized using HR-TEM, XRPD and electrochemical methods. The amperometric detection method was optimized and, under selected operating parameters (supporting electrolyte pH 6, working potential of 1 V), the proposed sensor possesses linear working range from 0.3 µM to 5.1 µM, with a detection limit of 0.08 µM. The effect of selected interferences was investigated and it was found that the developed approach offers accurate, precise, selective, fast and reproducible quantification of histamine using only one drop of the sample. In the end, this work stands as a proof-of-concept of the modified electrodes and electrochemical detection as a promising and prospective approach for the applications in real-time monitoring of the food quality.
T2  - Microchemical Journal
T1  - A single drop histamine sensor based on AuNPs/MnO2 modified screen-printed electrode
VL  - 155
SP  - 104778
DO  - 10.1016/j.microc.2020.104778
ER  - 

@article{
author = "Knežević, Sara and Ognjanović, Miloš and Nedić, Nemanja and Mariano, Jose F. M. L. and Milanović, Zorana and Petković, Branka B. and Antić, Bratislav and Vranješ-Đurić, Sanja and Stanković, Dalibor M.",
year = "2020",
abstract = "In order to ensure high food quality, one of the prime importance is the detection and quantification of histamine, well known marine food poison. In this work, we constructed novel electrochemical biosensor for the detection of histamine based on gold nanoparticles decorated on manganese dioxide (Au/MnO2) and used for modification of screen-printed carbon electrode (Au/MnO2@SPCE). The constructed sensor was then used for the estimation of histamine content in a single drop. Materials used in this study were synthesized and characterized using HR-TEM, XRPD and electrochemical methods. The amperometric detection method was optimized and, under selected operating parameters (supporting electrolyte pH 6, working potential of 1 V), the proposed sensor possesses linear working range from 0.3 µM to 5.1 µM, with a detection limit of 0.08 µM. The effect of selected interferences was investigated and it was found that the developed approach offers accurate, precise, selective, fast and reproducible quantification of histamine using only one drop of the sample. In the end, this work stands as a proof-of-concept of the modified electrodes and electrochemical detection as a promising and prospective approach for the applications in real-time monitoring of the food quality.",
journal = "Microchemical Journal",
title = "A single drop histamine sensor based on AuNPs/MnO2 modified screen-printed electrode",
volume = "155",
pages = "104778",
doi = "10.1016/j.microc.2020.104778"
}

Knežević, S., Ognjanović, M., Nedić, N., Mariano, J. F. M. L., Milanović, Z., Petković, B. B., Antić, B., Vranješ-Đurić, S.,& Stanković, D. M.. (2020). A single drop histamine sensor based on AuNPs/MnO2 modified screen-printed electrode. in Microchemical Journal, 155, 104778.
https://doi.org/10.1016/j.microc.2020.104778

Knežević S, Ognjanović M, Nedić N, Mariano JFML, Milanović Z, Petković BB, Antić B, Vranješ-Đurić S, Stanković DM. A single drop histamine sensor based on AuNPs/MnO2 modified screen-printed electrode. in Microchemical Journal. 2020;155:104778.
doi:10.1016/j.microc.2020.104778 .

Knežević, Sara, Ognjanović, Miloš, Nedić, Nemanja, Mariano, Jose F. M. L., Milanović, Zorana, Petković, Branka B., Antić, Bratislav, Vranješ-Đurić, Sanja, Stanković, Dalibor M., "A single drop histamine sensor based on AuNPs/MnO2 modified screen-printed electrode" in Microchemical Journal, 155 (2020):104778,
https://doi.org/10.1016/j.microc.2020.104778 . .

TY  - JOUR
AU  - Mariano, Jose F. M. L.
AU  - Bessergenev, Valentim G
AU  - Lourenço, João P
AU  - Hantusch, Martin
AU  - Burkel, Eberhard
AU  - do Rego, Ana M Botelho
AU  - Rajňák, Michal
AU  - Timko, Milan
AU  - Kopčanský, Peter
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8802
AB  - The present work reports on the structural and magnetic properties of TiO2 P25 Degussa powder doped with cobalt. Dissolution of cobalt in TiO2 matrix was achieved by precipitation of tris(diethyldithiocarbamato) cobalt(III) (CoDtc - Co[S2CN(C2H5)2]3 in chloroform (CHCl3) and consequent thermal treatment. Five different Co atomic percentage contents were chosen, e.g., 0.5%, 1%, 2%, 5% and 10%. It was shown that cobalt atoms are uniformly distributed across TiO2 matrix and exhibit antiferromagnetic interactions at low temperatures. © 2020 Elsevier B.V.
T2  - Journal of Magnetism and Magnetic Materials
T1  - Structural and magnetic properties of P25 TiO2 nanoparticles doped by Co
VL  - 501
SP  - 166442
DO  - 10.1016/j.jmmm.2020.166442
ER  - 

@article{
author = "Mariano, Jose F. M. L. and Bessergenev, Valentim G and Lourenço, João P and Hantusch, Martin and Burkel, Eberhard and do Rego, Ana M Botelho and Rajňák, Michal and Timko, Milan and Kopčanský, Peter",
year = "2020",
abstract = "The present work reports on the structural and magnetic properties of TiO2 P25 Degussa powder doped with cobalt. Dissolution of cobalt in TiO2 matrix was achieved by precipitation of tris(diethyldithiocarbamato) cobalt(III) (CoDtc - Co[S2CN(C2H5)2]3 in chloroform (CHCl3) and consequent thermal treatment. Five different Co atomic percentage contents were chosen, e.g., 0.5%, 1%, 2%, 5% and 10%. It was shown that cobalt atoms are uniformly distributed across TiO2 matrix and exhibit antiferromagnetic interactions at low temperatures. © 2020 Elsevier B.V.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Structural and magnetic properties of P25 TiO2 nanoparticles doped by Co",
volume = "501",
pages = "166442",
doi = "10.1016/j.jmmm.2020.166442"
}

Mariano, J. F. M. L., Bessergenev, V. G., Lourenço, J. P., Hantusch, M., Burkel, E., do Rego, A. M. B., Rajňák, M., Timko, M.,& Kopčanský, P.. (2020). Structural and magnetic properties of P25 TiO2 nanoparticles doped by Co. in Journal of Magnetism and Magnetic Materials, 501, 166442.
https://doi.org/10.1016/j.jmmm.2020.166442

Mariano JFML, Bessergenev VG, Lourenço JP, Hantusch M, Burkel E, do Rego AMB, Rajňák M, Timko M, Kopčanský P. Structural and magnetic properties of P25 TiO2 nanoparticles doped by Co. in Journal of Magnetism and Magnetic Materials. 2020;501:166442.
doi:10.1016/j.jmmm.2020.166442 .

Mariano, Jose F. M. L., Bessergenev, Valentim G, Lourenço, João P, Hantusch, Martin, Burkel, Eberhard, do Rego, Ana M Botelho, Rajňák, Michal, Timko, Milan, Kopčanský, Peter, "Structural and magnetic properties of P25 TiO2 nanoparticles doped by Co" in Journal of Magnetism and Magnetic Materials, 501 (2020):166442,
https://doi.org/10.1016/j.jmmm.2020.166442 . .

TY  - JOUR
AU  - Ognjanović, Miloš
AU  - Dojčinović, Biljana P.
AU  - Fabian, Martin
AU  - Stanković, Dalibor M.
AU  - Mariano, Jose F. M. L.
AU  - Antić, Bratislav
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0272884218311192
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7681
AB  - Microstructure and magnetic properties of nanoparticles can be tailored by optimising the synthesis procedure and changing chemical composition. In this study, a two-step procedure, i.e., coprecipitation in the presence of PEG 300 followed by microwave assisted (MW) hydrothermal synthesis, was introduced to obtain CoxFe3-xO4(x = 0, 0.1 and 0.2) nanoparticles. It was found that with the increase of Co content, particle/crystallite size increased, with significant change of coercivity (Hc). The mixed samples of CoxFe3-xO4(x = 0.1 and 0.2) were magnetically harder in comparison with Fe3O4. Тhe Hcof Fe3O4was 91 Oe, while for Co0.10Fe2.90O4and Co0.20Fe2.80O4, Hcwas 256 Oe and 1070 Oe, respectively. Saturation magnetisation (Ms) of mixed samples also increased up to 6% compared to Fe3O4. A special effort was devoted to study the effects of introducing different surfactants (PEG 300, PEG 4000 or SDS) during the synthesis procedure in order to improve morphological and microstructural properties of CoFe2O4nanoparticles. The influence of surfactants on physical/chemical properties of nanoparticles is discussed.
T2  - Ceramics International
T1  - Microwave assisted hydrothermal synthesis of (Fe,Co) 3 O 4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism
VL  - 44
IS  - 12
SP  - 13967
EP  - 13972
DO  - 10.1016/j.ceramint.2018.04.246
ER  - 

@article{
author = "Ognjanović, Miloš and Dojčinović, Biljana P. and Fabian, Martin and Stanković, Dalibor M. and Mariano, Jose F. M. L. and Antić, Bratislav",
year = "2018",
abstract = "Microstructure and magnetic properties of nanoparticles can be tailored by optimising the synthesis procedure and changing chemical composition. In this study, a two-step procedure, i.e., coprecipitation in the presence of PEG 300 followed by microwave assisted (MW) hydrothermal synthesis, was introduced to obtain CoxFe3-xO4(x = 0, 0.1 and 0.2) nanoparticles. It was found that with the increase of Co content, particle/crystallite size increased, with significant change of coercivity (Hc). The mixed samples of CoxFe3-xO4(x = 0.1 and 0.2) were magnetically harder in comparison with Fe3O4. Тhe Hcof Fe3O4was 91 Oe, while for Co0.10Fe2.90O4and Co0.20Fe2.80O4, Hcwas 256 Oe and 1070 Oe, respectively. Saturation magnetisation (Ms) of mixed samples also increased up to 6% compared to Fe3O4. A special effort was devoted to study the effects of introducing different surfactants (PEG 300, PEG 4000 or SDS) during the synthesis procedure in order to improve morphological and microstructural properties of CoFe2O4nanoparticles. The influence of surfactants on physical/chemical properties of nanoparticles is discussed.",
journal = "Ceramics International",
title = "Microwave assisted hydrothermal synthesis of (Fe,Co) 3 O 4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism",
volume = "44",
number = "12",
pages = "13967-13972",
doi = "10.1016/j.ceramint.2018.04.246"
}

Ognjanović, M., Dojčinović, B. P., Fabian, M., Stanković, D. M., Mariano, J. F. M. L.,& Antić, B.. (2018). Microwave assisted hydrothermal synthesis of (Fe,Co) 3 O 4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism. in Ceramics International, 44(12), 13967-13972.
https://doi.org/10.1016/j.ceramint.2018.04.246

Ognjanović M, Dojčinović BP, Fabian M, Stanković DM, Mariano JFML, Antić B. Microwave assisted hydrothermal synthesis of (Fe,Co) 3 O 4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism. in Ceramics International. 2018;44(12):13967-13972.
doi:10.1016/j.ceramint.2018.04.246 .

Ognjanović, Miloš, Dojčinović, Biljana P., Fabian, Martin, Stanković, Dalibor M., Mariano, Jose F. M. L., Antić, Bratislav, "Microwave assisted hydrothermal synthesis of (Fe,Co) 3 O 4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism" in Ceramics International, 44, no. 12 (2018):13967-13972,
https://doi.org/10.1016/j.ceramint.2018.04.246 . .

TY  - JOUR
AU  - Stanković, Dalibor M.
AU  - Ognjanović, Miloš
AU  - Fabian, Martin
AU  - Švorc, Lubomir
AU  - Mariano, Jose F. M. L.
AU  - Antić, Bratislav
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1853
AB  - In the present paper, the electrochemical behavior and the properties of two modified glassy carbon (GC) electrodes used for quantification of gallic acid in sweet wines were compared. A comparative study was conducted between titanium nitride- or wolfram carbide-doped reduced graphene oxide, labeled as TNrGO and WCrGO, respectively, modified GC electrodes, which are promising composite nanomaterials for electroanalytical applications. For the first time, WCrGO was synthesized and its electroanalytical properties compared with those of TNrGO. Results showed that the proposed materials exhibited enhanced characteristics, e.g., low limits of detection (1.1 mu M and 3.1 mu M for TNrGO and WCrGO, respectively), wide linear ranges (for TNrGO 4.5-76 mu M and for WCrGO 10-100 mu M), low adsorption, and low background current, which make them promising candidates for electrochemical sensing applications.
T2  - Analytical Biochemistry
T1  - Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid
VL  - 539
SP  - 104
EP  - 112
DO  - 10.1016/j.ab.2017.10.018
ER  - 

@article{
author = "Stanković, Dalibor M. and Ognjanović, Miloš and Fabian, Martin and Švorc, Lubomir and Mariano, Jose F. M. L. and Antić, Bratislav",
year = "2017",
abstract = "In the present paper, the electrochemical behavior and the properties of two modified glassy carbon (GC) electrodes used for quantification of gallic acid in sweet wines were compared. A comparative study was conducted between titanium nitride- or wolfram carbide-doped reduced graphene oxide, labeled as TNrGO and WCrGO, respectively, modified GC electrodes, which are promising composite nanomaterials for electroanalytical applications. For the first time, WCrGO was synthesized and its electroanalytical properties compared with those of TNrGO. Results showed that the proposed materials exhibited enhanced characteristics, e.g., low limits of detection (1.1 mu M and 3.1 mu M for TNrGO and WCrGO, respectively), wide linear ranges (for TNrGO 4.5-76 mu M and for WCrGO 10-100 mu M), low adsorption, and low background current, which make them promising candidates for electrochemical sensing applications.",
journal = "Analytical Biochemistry",
title = "Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid",
volume = "539",
pages = "104-112",
doi = "10.1016/j.ab.2017.10.018"
}

Stanković, D. M., Ognjanović, M., Fabian, M., Švorc, L., Mariano, J. F. M. L.,& Antić, B.. (2017). Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid. in Analytical Biochemistry, 539, 104-112.
https://doi.org/10.1016/j.ab.2017.10.018

Stanković DM, Ognjanović M, Fabian M, Švorc L, Mariano JFML, Antić B. Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid. in Analytical Biochemistry. 2017;539:104-112.
doi:10.1016/j.ab.2017.10.018 .

Stanković, Dalibor M., Ognjanović, Miloš, Fabian, Martin, Švorc, Lubomir, Mariano, Jose F. M. L., Antić, Bratislav, "Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid" in Analytical Biochemistry, 539 (2017):104-112,
https://doi.org/10.1016/j.ab.2017.10.018 . .

TY  - JOUR
AU  - Stanković, Dalibor M.
AU  - Švorc, Lubomir
AU  - Mariano, Jose F. M. L.
AU  - Ortner, Astrid
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1771
AB  - Colchicine (COLC) is a natural toxic product and secondary metabolite most commonly used to treat gout. In this study, its electrochemical behavior and determination was investigated by employing modification-free boron-doped diamond electrode (BDDE). Besides, its interaction with DNA was monitored using electrochemical methods. It was found that oxidation of this compound proceeds in two steps, where first sharp and well defined oxidation peak occurs at potential of around 1.19V, and second one at around 1.37V, in Britton-Robinson buffer solution at pH7.5. Wide dynamic range from 1 to 100 mu M was obtained with a detection limit (3 sigma(intercept)/slope) of a 0.26 mu M, based on the evaluation of first oxidation peak using differential pulse voltammetry. The proposed method was also found to be suitable for monitoring interaction of this drug with DNA as important segment for medical use. Concerning the validation, the analytical procedure shows excellent selectivity and sensitivity toward COLC detection and after method development it was successfully used for its quantification in pharmaceutical preparation and human serum sample, with satisfactory recovery. Obviously, this approach can be promising replacement for time-consuming and expensive separation methods.
T2  - Electroanalysis
T1  - Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA
VL  - 29
IS  - 10
SP  - 2276
EP  - 2281
DO  - 10.1002/elan.201700233
ER  - 

@article{
author = "Stanković, Dalibor M. and Švorc, Lubomir and Mariano, Jose F. M. L. and Ortner, Astrid and Kalcher, Kurt",
year = "2017",
abstract = "Colchicine (COLC) is a natural toxic product and secondary metabolite most commonly used to treat gout. In this study, its electrochemical behavior and determination was investigated by employing modification-free boron-doped diamond electrode (BDDE). Besides, its interaction with DNA was monitored using electrochemical methods. It was found that oxidation of this compound proceeds in two steps, where first sharp and well defined oxidation peak occurs at potential of around 1.19V, and second one at around 1.37V, in Britton-Robinson buffer solution at pH7.5. Wide dynamic range from 1 to 100 mu M was obtained with a detection limit (3 sigma(intercept)/slope) of a 0.26 mu M, based on the evaluation of first oxidation peak using differential pulse voltammetry. The proposed method was also found to be suitable for monitoring interaction of this drug with DNA as important segment for medical use. Concerning the validation, the analytical procedure shows excellent selectivity and sensitivity toward COLC detection and after method development it was successfully used for its quantification in pharmaceutical preparation and human serum sample, with satisfactory recovery. Obviously, this approach can be promising replacement for time-consuming and expensive separation methods.",
journal = "Electroanalysis",
title = "Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA",
volume = "29",
number = "10",
pages = "2276-2281",
doi = "10.1002/elan.201700233"
}

Stanković, D. M., Švorc, L., Mariano, J. F. M. L., Ortner, A.,& Kalcher, K.. (2017). Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA. in Electroanalysis, 29(10), 2276-2281.
https://doi.org/10.1002/elan.201700233

Stanković DM, Švorc L, Mariano JFML, Ortner A, Kalcher K. Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA. in Electroanalysis. 2017;29(10):2276-2281.
doi:10.1002/elan.201700233 .

Stanković, Dalibor M., Švorc, Lubomir, Mariano, Jose F. M. L., Ortner, Astrid, Kalcher, Kurt, "Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA" in Electroanalysis, 29, no. 10 (2017):2276-2281,
https://doi.org/10.1002/elan.201700233 . .