TY  - JOUR
AU  - Gojgić, Jelena
AU  - Petrović, Miloš
AU  - Jugović, Branimir
AU  - Jokić, Bojan
AU  - Grgur, Branimir
AU  - Gvozdenović, Milica
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5297
AB  - Polyaniline (PANI), due to its highly reversible electrochemistry with superior energy storage and delivery characteristics, is considered as an electrode material in batteries, capacitors, and hybrid systems. We used a facile electrochemical synthesis for the formation of the PANI electrode using galvanostatic polymerization of aniline on the graphite electrode at the current density of 2.0 mA cm−2 from the aqueous electrolyte containing 0.25 mol dm−3 aniline and 1.0 mol dm−3 H2SO4. Electrochemical and electrical characterization suggested excellent energy storage features of the PANI electrode in a three-electrode system with specific energy up to 53 Wh kg−1 and specific power up to 7600 W kg−1. After 2000 successive charge/discharge cycles at 9.5 Ag−1, the PANI electrode retained 95% of the initial capacity, with practically unaltered Coulombic efficiency of nearly 98%, providing a good base for future studies and practical applications.
PB  - MDPI
T2  - Polymers
T1  - Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior
IS  - 24
SP  - 5365
VL  - 14
DO  - 10.3390/polym14245365
ER  - 

@article{
author = "Gojgić, Jelena and Petrović, Miloš and Jugović, Branimir and Jokić, Bojan and Grgur, Branimir and Gvozdenović, Milica",
year = "2022",
abstract = "Polyaniline (PANI), due to its highly reversible electrochemistry with superior energy storage and delivery characteristics, is considered as an electrode material in batteries, capacitors, and hybrid systems. We used a facile electrochemical synthesis for the formation of the PANI electrode using galvanostatic polymerization of aniline on the graphite electrode at the current density of 2.0 mA cm−2 from the aqueous electrolyte containing 0.25 mol dm−3 aniline and 1.0 mol dm−3 H2SO4. Electrochemical and electrical characterization suggested excellent energy storage features of the PANI electrode in a three-electrode system with specific energy up to 53 Wh kg−1 and specific power up to 7600 W kg−1. After 2000 successive charge/discharge cycles at 9.5 Ag−1, the PANI electrode retained 95% of the initial capacity, with practically unaltered Coulombic efficiency of nearly 98%, providing a good base for future studies and practical applications.",
publisher = "MDPI",
journal = "Polymers",
title = "Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior",
number = "24",
pages = "5365",
volume = "14",
doi = "10.3390/polym14245365"
}

Gojgić, J., Petrović, M., Jugović, B., Jokić, B., Grgur, B.,& Gvozdenović, M.. (2022). Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior. in Polymers
MDPI., 14(24), 5365.
https://doi.org/10.3390/polym14245365

Gojgić J, Petrović M, Jugović B, Jokić B, Grgur B, Gvozdenović M. Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior. in Polymers. 2022;14(24):5365.
doi:10.3390/polym14245365 .

Gojgić, Jelena, Petrović, Miloš, Jugović, Branimir, Jokić, Bojan, Grgur, Branimir, Gvozdenović, Milica, "Electrochemical and Electrical Performances of High Energy Storage Polyaniline Electrode with Supercapattery Behavior" in Polymers, 14, no. 24 (2022):5365,
https://doi.org/10.3390/polym14245365 . .

TY  - JOUR
AU  - Jonović, Marko
AU  - Jugović, Branimir
AU  - Žuža, Milena
AU  - Ðorđević, Verica
AU  - Milašinović, Nikola
AU  - Bugarski, Branko
AU  - Knežević-Jugović, Zorica
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5165
AB  - The aim of this study was to investigate covalent immobilization of horseradish peroxidase (HRP) on magnetic nanoparticles (Mag) encapsulated in calcium alginate beads (MABs) for color degradation, combining easy and fast removal of biocatalyst from the reaction mixture due to its magnetic properties and strong binding due to surface alginate functional groups. MABs obtained by extrusion techniques were analyzed by optical microscopy, FEG-SEM and characterized regarding mechanical properties, magnetization and HRP binding. HRP with initial concentration of 10 mg/gcarrier was successfully covalently bonded on MABs (diameter ~1 mm, magnetite/alginate ratio 1:4), with protein loading of 8.9 mg/gcarrier, immobilization yield 96.9% and activity 32.8 U/g. Immobilized HRP on MABs (HRP-MABs) was then used to catalyze degradation of two anthraquinonic dyes, Acid Blue 225 (AB225) and Acid Violet 109 (AV109), as models for wastewater pollutants. HRP-MABs decolorized 77.3% and 76.1% of AV109 and AB225, respectively after 15 min under optimal conditions (0.097 mM H2O2, 200 mg of HRP-MABs (8.9 mg/gcarrier), 0.08 and 0.1 g/mg beads/dye ratio for AV109 and AB225, respectively). Biocatalyst was used for 7 repeated cycles retaining 75% and 51% of initial activity for AB225 and AV109, respectively, showing potential for use in large scale applications for colored wastewater treatment.
PB  - MDPI
T2  - Polymers
T1  - Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation
IS  - 13
SP  - 2614
VL  - 14
DO  - 10.3390/polym14132614
ER  - 

@article{
author = "Jonović, Marko and Jugović, Branimir and Žuža, Milena and Ðorđević, Verica and Milašinović, Nikola and Bugarski, Branko and Knežević-Jugović, Zorica",
year = "2022",
abstract = "The aim of this study was to investigate covalent immobilization of horseradish peroxidase (HRP) on magnetic nanoparticles (Mag) encapsulated in calcium alginate beads (MABs) for color degradation, combining easy and fast removal of biocatalyst from the reaction mixture due to its magnetic properties and strong binding due to surface alginate functional groups. MABs obtained by extrusion techniques were analyzed by optical microscopy, FEG-SEM and characterized regarding mechanical properties, magnetization and HRP binding. HRP with initial concentration of 10 mg/gcarrier was successfully covalently bonded on MABs (diameter ~1 mm, magnetite/alginate ratio 1:4), with protein loading of 8.9 mg/gcarrier, immobilization yield 96.9% and activity 32.8 U/g. Immobilized HRP on MABs (HRP-MABs) was then used to catalyze degradation of two anthraquinonic dyes, Acid Blue 225 (AB225) and Acid Violet 109 (AV109), as models for wastewater pollutants. HRP-MABs decolorized 77.3% and 76.1% of AV109 and AB225, respectively after 15 min under optimal conditions (0.097 mM H2O2, 200 mg of HRP-MABs (8.9 mg/gcarrier), 0.08 and 0.1 g/mg beads/dye ratio for AV109 and AB225, respectively). Biocatalyst was used for 7 repeated cycles retaining 75% and 51% of initial activity for AB225 and AV109, respectively, showing potential for use in large scale applications for colored wastewater treatment.",
publisher = "MDPI",
journal = "Polymers",
title = "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation",
number = "13",
pages = "2614",
volume = "14",
doi = "10.3390/polym14132614"
}

Jonović, M., Jugović, B., Žuža, M., Ðorđević, V., Milašinović, N., Bugarski, B.,& Knežević-Jugović, Z.. (2022). Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation. in Polymers
MDPI., 14(13), 2614.
https://doi.org/10.3390/polym14132614

Jonović M, Jugović B, Žuža M, Ðorđević V, Milašinović N, Bugarski B, Knežević-Jugović Z. Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation. in Polymers. 2022;14(13):2614.
doi:10.3390/polym14132614 .

Jonović, Marko, Jugović, Branimir, Žuža, Milena, Ðorđević, Verica, Milašinović, Nikola, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of Horseradish Peroxidase on Magnetite-Alginate Beads to Enable Effective Strong Binding and Enzyme Recycling during Anthraquinone Dyes’ Degradation" in Polymers, 14, no. 13 (2022):2614,
https://doi.org/10.3390/polym14132614 . .

TY  - JOUR
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Jokić, Bojan
AU  - Džunuzović, Enis
AU  - Grgur, Branimir
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4064
AB  - Poly(o-toluidine) (POT) is electrochemically synthesized on graphite electrode at constant current density of 1.5 mA cm(-2) from aqueous electrolyte of 1.0 mol dm(-3) H2SO4 and 0.25 mol dm(-3) o-toluidine. Electrochemical characterization of POT electrode is performed using cyclic voltammetry, Mot Schottky analysis and galvanostatic measurements at different currents. POT electrode exhibited high energy storage features, with specific energy up to 17.5 Wh kg(-1) and specific power up to 3300 W kg(-1). Cyclic stability exceeding 90% is obtained over 2000 charge/discharge cycles at 13.1 A g(-1) indicating the perspective application of POT electrode as energy storage material.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material
EP  - 752
SP  - 746
VL  - 317
DO  - 10.1016/j.electacta.2019.06.046
ER  - 

@article{
author = "Gvozdenović, Milica and Jugović, Branimir and Jokić, Bojan and Džunuzović, Enis and Grgur, Branimir",
year = "2019",
abstract = "Poly(o-toluidine) (POT) is electrochemically synthesized on graphite electrode at constant current density of 1.5 mA cm(-2) from aqueous electrolyte of 1.0 mol dm(-3) H2SO4 and 0.25 mol dm(-3) o-toluidine. Electrochemical characterization of POT electrode is performed using cyclic voltammetry, Mot Schottky analysis and galvanostatic measurements at different currents. POT electrode exhibited high energy storage features, with specific energy up to 17.5 Wh kg(-1) and specific power up to 3300 W kg(-1). Cyclic stability exceeding 90% is obtained over 2000 charge/discharge cycles at 13.1 A g(-1) indicating the perspective application of POT electrode as energy storage material.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material",
pages = "752-746",
volume = "317",
doi = "10.1016/j.electacta.2019.06.046"
}

Gvozdenović, M., Jugović, B., Jokić, B., Džunuzović, E.,& Grgur, B.. (2019). Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 317, 746-752.
https://doi.org/10.1016/j.electacta.2019.06.046

Gvozdenović M, Jugović B, Jokić B, Džunuzović E, Grgur B. Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material. in Electrochimica Acta. 2019;317:746-752.
doi:10.1016/j.electacta.2019.06.046 .

Gvozdenović, Milica, Jugović, Branimir, Jokić, Bojan, Džunuzović, Enis, Grgur, Branimir, "Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material" in Electrochimica Acta, 317 (2019):746-752,
https://doi.org/10.1016/j.electacta.2019.06.046 . .

TY  - JOUR
AU  - Grgur, Branimir
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Trišović, Tomislav
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4099
AB  - The electrochemical characteristics of zinc-polyaniline (PANI) secondary cell in the electrolyte containing 0.8 M Na citrate, 0.3 M NH4Cl and 0.3 M ZnCl2 is investigated. Based on the measurements of potentials and voltage of the cell during charge/discharge for the currents in the range of 18 to 45 mA, the specific electrode capacity of 85 to 55 mA h g(-1), the specific energy of 60-40 mW h g(-1) and the specific power of 150-350 mW g(-1), is determined. Keywords: polyaniline; zinc; batteries; pseudocapacitors; citrates.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Characteristics of the citrate-based zinc-polyaniline secondary cell with supercapattery behaviour
EP  - 1270
IS  - 11
SP  - 1261
VL  - 84
DO  - 10.2298/JSC190709077G
ER  - 

@article{
author = "Grgur, Branimir and Gvozdenović, Milica and Jugović, Branimir and Trišović, Tomislav",
year = "2019",
abstract = "The electrochemical characteristics of zinc-polyaniline (PANI) secondary cell in the electrolyte containing 0.8 M Na citrate, 0.3 M NH4Cl and 0.3 M ZnCl2 is investigated. Based on the measurements of potentials and voltage of the cell during charge/discharge for the currents in the range of 18 to 45 mA, the specific electrode capacity of 85 to 55 mA h g(-1), the specific energy of 60-40 mW h g(-1) and the specific power of 150-350 mW g(-1), is determined. Keywords: polyaniline; zinc; batteries; pseudocapacitors; citrates.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Characteristics of the citrate-based zinc-polyaniline secondary cell with supercapattery behaviour",
pages = "1270-1261",
number = "11",
volume = "84",
doi = "10.2298/JSC190709077G"
}

Grgur, B., Gvozdenović, M., Jugović, B.,& Trišović, T.. (2019). Characteristics of the citrate-based zinc-polyaniline secondary cell with supercapattery behaviour. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 84(11), 1261-1270.
https://doi.org/10.2298/JSC190709077G

Grgur B, Gvozdenović M, Jugović B, Trišović T. Characteristics of the citrate-based zinc-polyaniline secondary cell with supercapattery behaviour. in Journal of the Serbian Chemical Society. 2019;84(11):1261-1270.
doi:10.2298/JSC190709077G .

Grgur, Branimir, Gvozdenović, Milica, Jugović, Branimir, Trišović, Tomislav, "Characteristics of the citrate-based zinc-polyaniline secondary cell with supercapattery behaviour" in Journal of the Serbian Chemical Society, 84, no. 11 (2019):1261-1270,
https://doi.org/10.2298/JSC190709077G . .

TY  - JOUR
AU  - Grgur, Branimir
AU  - Janačković, Marija
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4221
AB  - The electrochemically synthesized polypyrrole (PPy) is investigated as a possible active material of the low-cost aqueous based secondary power sources in combination with zinc, lead oxide, and lead sulfate. The discharge capacity of the polypyrrole in the chloride-based electrolyte (for the ZnIPPy cell) is in the range 110 mAh g(-1) of PPy, while in the sulfate-based electrolyte similar to 150 mAh g(-1) of PPy (for the PbSO4 vertical bar PPy and PPy vertical bar PbO2 cells), which is close to the theoretically calculated values. Electrochemical and electrical parameters, reactions in the cells, specific capacity, specific capacitance, energy, and power, for the Zn vertical bar PPy, PPy vertical bar PbO2 and PbSO4 vertical bar PPy cells are determined. In addition, the energy efficiency, for the considered systems is estimated. Obtained values of the specific power and energy, could classified investigated systems as a battery type hybrid superacapacitors or "supercapattery".
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Science and Engineering B-Advanced Functional Solid-State Materials
T1  - The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics
EP  - 182
SP  - 175
VL  - 243
DO  - 10.1016/j.mseb.2019.04.013
ER  - 

@article{
author = "Grgur, Branimir and Janačković, Marija and Jugović, Branimir and Gvozdenović, Milica",
year = "2019",
abstract = "The electrochemically synthesized polypyrrole (PPy) is investigated as a possible active material of the low-cost aqueous based secondary power sources in combination with zinc, lead oxide, and lead sulfate. The discharge capacity of the polypyrrole in the chloride-based electrolyte (for the ZnIPPy cell) is in the range 110 mAh g(-1) of PPy, while in the sulfate-based electrolyte similar to 150 mAh g(-1) of PPy (for the PbSO4 vertical bar PPy and PPy vertical bar PbO2 cells), which is close to the theoretically calculated values. Electrochemical and electrical parameters, reactions in the cells, specific capacity, specific capacitance, energy, and power, for the Zn vertical bar PPy, PPy vertical bar PbO2 and PbSO4 vertical bar PPy cells are determined. In addition, the energy efficiency, for the considered systems is estimated. Obtained values of the specific power and energy, could classified investigated systems as a battery type hybrid superacapacitors or "supercapattery".",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Science and Engineering B-Advanced Functional Solid-State Materials",
title = "The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics",
pages = "182-175",
volume = "243",
doi = "10.1016/j.mseb.2019.04.013"
}

Grgur, B., Janačković, M., Jugović, B.,& Gvozdenović, M.. (2019). The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics. in Materials Science and Engineering B-Advanced Functional Solid-State Materials
Elsevier Science Bv, Amsterdam., 243, 175-182.
https://doi.org/10.1016/j.mseb.2019.04.013

Grgur B, Janačković M, Jugović B, Gvozdenović M. The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics. in Materials Science and Engineering B-Advanced Functional Solid-State Materials. 2019;243:175-182.
doi:10.1016/j.mseb.2019.04.013 .

Grgur, Branimir, Janačković, Marija, Jugović, Branimir, Gvozdenović, Milica, "The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics" in Materials Science and Engineering B-Advanced Functional Solid-State Materials, 243 (2019):175-182,
https://doi.org/10.1016/j.mseb.2019.04.013 . .

TY  - JOUR
AU  - Grgur, Branimir
AU  - Janačković, Marija
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5049
AB  - The electrochemically synthesized polypyrrole (PPy) is investigated as a possible active material of the low-cost aqueous based secondary power sources in combination with zinc, lead oxide, and lead sulfate. The discharge capacity of the polypyrrole in the chloride-based electrolyte (for the Zn|PPy cell) is in the range 110 mAh g −1 of PPy, while in the sulfate-based electrolyte ∼150 mAh g −1 of PPy (for the PbSO 4 |PPy and PPy|PbO 2 cells), which is close to the theoretically calculated values. Electrochemical and electrical parameters, reactions in the cells, specific capacity, specific capacitance, energy, and power, for the Zn|PPy, PPy|PbO 2 and PbSO 4 |PPy cells are determined. In addition, the energy efficiency, for the considered systems is estimated. Obtained values of the specific power and energy, could classified investigated systems as a battery type hybrid superacapacitors or “supercapattery”.
PB  - Elsevier Ltd
T2  - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
T1  - The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics
EP  - 182
SP  - 175
VL  - 243
DO  - 10.1016/j.mseb.2019.04.013
ER  - 

@article{
author = "Grgur, Branimir and Janačković, Marija and Jugović, Branimir and Gvozdenović, Milica",
year = "2019",
abstract = "The electrochemically synthesized polypyrrole (PPy) is investigated as a possible active material of the low-cost aqueous based secondary power sources in combination with zinc, lead oxide, and lead sulfate. The discharge capacity of the polypyrrole in the chloride-based electrolyte (for the Zn|PPy cell) is in the range 110 mAh g −1 of PPy, while in the sulfate-based electrolyte ∼150 mAh g −1 of PPy (for the PbSO 4 |PPy and PPy|PbO 2 cells), which is close to the theoretically calculated values. Electrochemical and electrical parameters, reactions in the cells, specific capacity, specific capacitance, energy, and power, for the Zn|PPy, PPy|PbO 2 and PbSO 4 |PPy cells are determined. In addition, the energy efficiency, for the considered systems is estimated. Obtained values of the specific power and energy, could classified investigated systems as a battery type hybrid superacapacitors or “supercapattery”.",
publisher = "Elsevier Ltd",
journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",
title = "The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics",
pages = "182-175",
volume = "243",
doi = "10.1016/j.mseb.2019.04.013"
}

Grgur, B., Janačković, M., Jugović, B.,& Gvozdenović, M.. (2019). The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Elsevier Ltd., 243, 175-182.
https://doi.org/10.1016/j.mseb.2019.04.013

Grgur B, Janačković M, Jugović B, Gvozdenović M. The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology. 2019;243:175-182.
doi:10.1016/j.mseb.2019.04.013 .

Grgur, Branimir, Janačković, Marija, Jugović, Branimir, Gvozdenović, Milica, "The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics" in Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 243 (2019):175-182,
https://doi.org/10.1016/j.mseb.2019.04.013 . .

TY  - JOUR
AU  - Radovanović, Mirjana N.
AU  - Nikolić, Milan P.
AU  - Đurović, Vesna M.
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica
AU  - Grgur, Branimir
AU  - Knežević-Jugović, Zorica
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4026
AB  - Magnetic particles (MAG), obtained by standard procedure of coprecipitation of Fe2+ and Fe3+ in an excess of ammonia, and polyaniline modified magnetic particles MAG-PANI were used as carriers for immobilization of a-amylase from Bacillus licheniformis. The formation of a polyaniline layer (PANI) on MAG particles was achieved by chemical polymerization of aniline. Immobilization was carried out by adsorption, as a simple, inexpensive and fast method that allows retention of a large portion of the initial activity of the immobilized enzyme. FTIR spectroscopy was used to characterize the obtained particles and to confirm changes dueto formation of a PANI layer and conjugation of a-amylase on the particle surfaces. Particle size distribution was bimodal and three-modal for MAG and MAG-PANI, respectively. Appearance of a fraction of smaller MAG-PANI particles than MAG particles could be attributed to the formation of PANI particles without the MAG core. Measured values of Zeta potential for MAG-PANI were higher as compared to MAG indicating stabilization of particles in the presence of PANI. Relevant kinetic parameters for immobilized enzyme were determined from the Hanes plot. The apparent K-m constant was 1.91 and 1.48 g L-1 for MAG-A and MAG-PANI-A, respectively, while V-m was 0.19 g L-1 min(-1) for MAG and 0.32 g L-1 min(-1) for MAG-PANI. The obtained values of K-m indicated that modification of MAG by PANI enhanced kinetic properties of the immobilized enzyme. Moreover, the modification of MAG by PANI showed the increase in both pH and thermal stabilities of the immobilized enzyme. Studies of the operational activity of the immobilized enzyme on MAG-PANI have shown that 98.8% of starch was hydrolyzed over 20.0 min. In the first cycle in the packed bed reactor operated in a recycling mode, but approximately five times longer period was required to hydrolyze 93.5 of starch in the fifth cycle. In the continuous packed bed reactor without recycling, the degree of starch hydrolysis was not changed significantly during 4 h and was 88.8 +/- 1.6%, whereas the half-life of the biocatalyst was 6.2 h. Although coating MAG particles with a polyaniline offers many advantages, the main disadvantage is possible appearance of residues of aniline monomers and dimmers. The potential toxicity of these residues requires precise composition analysis of the product of starch hydrolysis catalyzed by a-amylase adsorbed onto MAG-PANI.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Polyaniline stabilization of magnetic particles and immobilization of alpha-amylase
EP  - 12
IS  - 1
SP  - 1
VL  - 72
DO  - 10.2298/HEMIND161213016R
ER  - 

@article{
author = "Radovanović, Mirjana N. and Nikolić, Milan P. and Đurović, Vesna M. and Jugović, Branimir and Gvozdenović, Milica and Grgur, Branimir and Knežević-Jugović, Zorica",
year = "2018",
abstract = "Magnetic particles (MAG), obtained by standard procedure of coprecipitation of Fe2+ and Fe3+ in an excess of ammonia, and polyaniline modified magnetic particles MAG-PANI were used as carriers for immobilization of a-amylase from Bacillus licheniformis. The formation of a polyaniline layer (PANI) on MAG particles was achieved by chemical polymerization of aniline. Immobilization was carried out by adsorption, as a simple, inexpensive and fast method that allows retention of a large portion of the initial activity of the immobilized enzyme. FTIR spectroscopy was used to characterize the obtained particles and to confirm changes dueto formation of a PANI layer and conjugation of a-amylase on the particle surfaces. Particle size distribution was bimodal and three-modal for MAG and MAG-PANI, respectively. Appearance of a fraction of smaller MAG-PANI particles than MAG particles could be attributed to the formation of PANI particles without the MAG core. Measured values of Zeta potential for MAG-PANI were higher as compared to MAG indicating stabilization of particles in the presence of PANI. Relevant kinetic parameters for immobilized enzyme were determined from the Hanes plot. The apparent K-m constant was 1.91 and 1.48 g L-1 for MAG-A and MAG-PANI-A, respectively, while V-m was 0.19 g L-1 min(-1) for MAG and 0.32 g L-1 min(-1) for MAG-PANI. The obtained values of K-m indicated that modification of MAG by PANI enhanced kinetic properties of the immobilized enzyme. Moreover, the modification of MAG by PANI showed the increase in both pH and thermal stabilities of the immobilized enzyme. Studies of the operational activity of the immobilized enzyme on MAG-PANI have shown that 98.8% of starch was hydrolyzed over 20.0 min. In the first cycle in the packed bed reactor operated in a recycling mode, but approximately five times longer period was required to hydrolyze 93.5 of starch in the fifth cycle. In the continuous packed bed reactor without recycling, the degree of starch hydrolysis was not changed significantly during 4 h and was 88.8 +/- 1.6%, whereas the half-life of the biocatalyst was 6.2 h. Although coating MAG particles with a polyaniline offers many advantages, the main disadvantage is possible appearance of residues of aniline monomers and dimmers. The potential toxicity of these residues requires precise composition analysis of the product of starch hydrolysis catalyzed by a-amylase adsorbed onto MAG-PANI.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Polyaniline stabilization of magnetic particles and immobilization of alpha-amylase",
pages = "12-1",
number = "1",
volume = "72",
doi = "10.2298/HEMIND161213016R"
}

Radovanović, M. N., Nikolić, M. P., Đurović, V. M., Jugović, B., Gvozdenović, M., Grgur, B.,& Knežević-Jugović, Z.. (2018). Polyaniline stabilization of magnetic particles and immobilization of alpha-amylase. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 72(1), 1-12.
https://doi.org/10.2298/HEMIND161213016R

Radovanović MN, Nikolić MP, Đurović VM, Jugović B, Gvozdenović M, Grgur B, Knežević-Jugović Z. Polyaniline stabilization of magnetic particles and immobilization of alpha-amylase. in Hemijska industrija. 2018;72(1):1-12.
doi:10.2298/HEMIND161213016R .

Radovanović, Mirjana N., Nikolić, Milan P., Đurović, Vesna M., Jugović, Branimir, Gvozdenović, Milica, Grgur, Branimir, Knežević-Jugović, Zorica, "Polyaniline stabilization of magnetic particles and immobilization of alpha-amylase" in Hemijska industrija, 72, no. 1 (2018):1-12,
https://doi.org/10.2298/HEMIND161213016R . .

TY  - JOUR
AU  - Gvozdenović, Milica
AU  - Džunuzović, Enis
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3825
AB  - Corrosion protection using conventional coatings is the most used method. Application of polyaniline (PANI) as an inhibitor in conventional coating is based on its proven and well examined protective nature, with motivation for replacement of hazardous materials used as inhibitors. Experimental procedures for investigation of the influence of PANI in coatings are focused both on evaluation of physical properties of the coatings studied by FTIR, Raman and UV spectroscopy, thermogravimetric analysis, SEM and TEM microcopies, while the protective nature of the coating, applied at the first place on steel, is studied by accelerated corrosion testing using humidity and salt chamber, electrochemical impedance spectroscopy and polarization measurements upon immersion in corrosion media.
AB  - Primena sistema klasičnih organskih prevlaka za zaštitu metala i legura od korozije je najrasprostranjeniji vid zašte. Primena inhibitora korozije na bazi polianilina (PANI) je zasnovana na njegovom eksperimentalno potvrđenom zaštitnom dejstvu. Osnovni motiv za primenu PANI je zamena ekološki neprihvatljivih materijala koji se korite kao inhibitori. Eksperimentalna istraživanja u ovoj oblsti bazirana su na proučavanju fizičkih svojstava prevlaka primenom spektoskopskih tehnika: FTIR, Ramanske spektroskopije i UV spektroskopije, termogravimetrijske analize, SEM i TEM mikroskopija, dok se ispitivanja zaštitnih svojstava prevlaka na baziraju na ubrzanim korozionim testovima primenom slane i vlažne komore, eksperimentima spektroskopije elektrohemijske impedancije i polarizacionim merenjima.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Polyaniline based corrosion inhibitors for conventional organic coatings
T1  - Primena polianilina kao inhibitora korozije klasičnih organskih prevlaka
EP  - 292
IS  - 2
SP  - 282
VL  - 59
DO  - 10.5937/ZasMat1802282G
ER  - 

@article{
author = "Gvozdenović, Milica and Džunuzović, Enis and Jugović, Branimir and Grgur, Branimir",
year = "2018",
abstract = "Corrosion protection using conventional coatings is the most used method. Application of polyaniline (PANI) as an inhibitor in conventional coating is based on its proven and well examined protective nature, with motivation for replacement of hazardous materials used as inhibitors. Experimental procedures for investigation of the influence of PANI in coatings are focused both on evaluation of physical properties of the coatings studied by FTIR, Raman and UV spectroscopy, thermogravimetric analysis, SEM and TEM microcopies, while the protective nature of the coating, applied at the first place on steel, is studied by accelerated corrosion testing using humidity and salt chamber, electrochemical impedance spectroscopy and polarization measurements upon immersion in corrosion media., Primena sistema klasičnih organskih prevlaka za zaštitu metala i legura od korozije je najrasprostranjeniji vid zašte. Primena inhibitora korozije na bazi polianilina (PANI) je zasnovana na njegovom eksperimentalno potvrđenom zaštitnom dejstvu. Osnovni motiv za primenu PANI je zamena ekološki neprihvatljivih materijala koji se korite kao inhibitori. Eksperimentalna istraživanja u ovoj oblsti bazirana su na proučavanju fizičkih svojstava prevlaka primenom spektoskopskih tehnika: FTIR, Ramanske spektroskopije i UV spektroskopije, termogravimetrijske analize, SEM i TEM mikroskopija, dok se ispitivanja zaštitnih svojstava prevlaka na baziraju na ubrzanim korozionim testovima primenom slane i vlažne komore, eksperimentima spektroskopije elektrohemijske impedancije i polarizacionim merenjima.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Polyaniline based corrosion inhibitors for conventional organic coatings, Primena polianilina kao inhibitora korozije klasičnih organskih prevlaka",
pages = "292-282",
number = "2",
volume = "59",
doi = "10.5937/ZasMat1802282G"
}

Gvozdenović, M., Džunuzović, E., Jugović, B.,& Grgur, B.. (2018). Polyaniline based corrosion inhibitors for conventional organic coatings. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 59(2), 282-292.
https://doi.org/10.5937/ZasMat1802282G

Gvozdenović M, Džunuzović E, Jugović B, Grgur B. Polyaniline based corrosion inhibitors for conventional organic coatings. in Zaštita materijala. 2018;59(2):282-292.
doi:10.5937/ZasMat1802282G .

Gvozdenović, Milica, Džunuzović, Enis, Jugović, Branimir, Grgur, Branimir, "Polyaniline based corrosion inhibitors for conventional organic coatings" in Zaštita materijala, 59, no. 2 (2018):282-292,
https://doi.org/10.5937/ZasMat1802282G . .

TY  - JOUR
AU  - Omymen, Waleed M.
AU  - Rogan, Jelena
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica
AU  - Grgur, Branimir
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3621
AB  - The electrochemical oxidation of the urea in near neutral pH is investigated on platinum electrode. It is shown that oxidation reaction is practically inhibited up to the potentials of similar to 0.9 V. The same reaction is investigated onto electrochemically obtained titanium dioxide nanotubes modified by hematite using facile, low-cost successive ion layer adsorption and reaction (SILAR) method. It is shown that such system possesses electrocatalytic activity at very low potentials, and activity can be further improved by the illumination of the electrode in the photo-assisted reaction. The possible application of the photoactive anode is considered in the application of urea based water electrolysis and urea based fuel cell.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Saudi Chemical Society
T1  - Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite
EP  - 997
IS  - 8
SP  - 990
VL  - 21
DO  - 10.1016/j.jscs.2017.05.010
ER  - 

@article{
author = "Omymen, Waleed M. and Rogan, Jelena and Jugović, Branimir and Gvozdenović, Milica and Grgur, Branimir",
year = "2017",
abstract = "The electrochemical oxidation of the urea in near neutral pH is investigated on platinum electrode. It is shown that oxidation reaction is practically inhibited up to the potentials of similar to 0.9 V. The same reaction is investigated onto electrochemically obtained titanium dioxide nanotubes modified by hematite using facile, low-cost successive ion layer adsorption and reaction (SILAR) method. It is shown that such system possesses electrocatalytic activity at very low potentials, and activity can be further improved by the illumination of the electrode in the photo-assisted reaction. The possible application of the photoactive anode is considered in the application of urea based water electrolysis and urea based fuel cell.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Saudi Chemical Society",
title = "Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite",
pages = "997-990",
number = "8",
volume = "21",
doi = "10.1016/j.jscs.2017.05.010"
}

Omymen, W. M., Rogan, J., Jugović, B., Gvozdenović, M.,& Grgur, B.. (2017). Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite. in Journal of Saudi Chemical Society
Elsevier Science Bv, Amsterdam., 21(8), 990-997.
https://doi.org/10.1016/j.jscs.2017.05.010

Omymen WM, Rogan J, Jugović B, Gvozdenović M, Grgur B. Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite. in Journal of Saudi Chemical Society. 2017;21(8):990-997.
doi:10.1016/j.jscs.2017.05.010 .

Omymen, Waleed M., Rogan, Jelena, Jugović, Branimir, Gvozdenović, Milica, Grgur, Branimir, "Photo-assisted electrochemical oxidation of the urea onto TiO2-nanotubes modified by hematite" in Journal of Saudi Chemical Society, 21, no. 8 (2017):990-997,
https://doi.org/10.1016/j.jscs.2017.05.010 . .

TY  - JOUR
AU  - Jokić, Bojan
AU  - Džunuzović, Enis
AU  - Grgur, Branimir
AU  - Jugović, Branimir
AU  - Trišović, Tomislav
AU  - Stevanović, Jasmina
AU  - Gvozdenović, Milica
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3579
AB  - Poly(aniline-co-(m-aminobenzoic acid)) was synthesized electrochemically at graphite electrode under galvanostatic conditions. Aqueous electrolyte for synthesis was consisted of HCl and different amount of aniline and m-aminobenzoic acid. The presence of the meta positioned carboxylic group in m-aminobenzoic acid influenced higher co-polymerization potential, different morphology and electrochemical behavior of copolymers compared to polyaniline. Electrochemical activity is achieved by proton exchange in neutral environment that can result in a faster charge/discharge process, which is in the case of PANI limited by slow anion exchange, making this material promising for consideration in super-capacitors and in biological system.
PB  - Springer, Dordrecht
T2  - Journal of Polymer Research
T1  - The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid)
IS  - 9
VL  - 24
DO  - 10.1007/s10965-017-1313-5
ER  - 

@article{
author = "Jokić, Bojan and Džunuzović, Enis and Grgur, Branimir and Jugović, Branimir and Trišović, Tomislav and Stevanović, Jasmina and Gvozdenović, Milica",
year = "2017",
abstract = "Poly(aniline-co-(m-aminobenzoic acid)) was synthesized electrochemically at graphite electrode under galvanostatic conditions. Aqueous electrolyte for synthesis was consisted of HCl and different amount of aniline and m-aminobenzoic acid. The presence of the meta positioned carboxylic group in m-aminobenzoic acid influenced higher co-polymerization potential, different morphology and electrochemical behavior of copolymers compared to polyaniline. Electrochemical activity is achieved by proton exchange in neutral environment that can result in a faster charge/discharge process, which is in the case of PANI limited by slow anion exchange, making this material promising for consideration in super-capacitors and in biological system.",
publisher = "Springer, Dordrecht",
journal = "Journal of Polymer Research",
title = "The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid)",
number = "9",
volume = "24",
doi = "10.1007/s10965-017-1313-5"
}

Jokić, B., Džunuzović, E., Grgur, B., Jugović, B., Trišović, T., Stevanović, J.,& Gvozdenović, M.. (2017). The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid). in Journal of Polymer Research
Springer, Dordrecht., 24(9).
https://doi.org/10.1007/s10965-017-1313-5

Jokić B, Džunuzović E, Grgur B, Jugović B, Trišović T, Stevanović J, Gvozdenović M. The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid). in Journal of Polymer Research. 2017;24(9).
doi:10.1007/s10965-017-1313-5 .

Jokić, Bojan, Džunuzović, Enis, Grgur, Branimir, Jugović, Branimir, Trišović, Tomislav, Stevanović, Jasmina, Gvozdenović, Milica, "The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid)" in Journal of Polymer Research, 24, no. 9 (2017),
https://doi.org/10.1007/s10965-017-1313-5 . .

TY  - JOUR
AU  - Al-Eggiely, Ali H.
AU  - Alguail, Alsadek A.
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3540
AB  - An environmentally friendly cell using polypyrrole-air regenerative cathode and zinc as anode is investigated in the 3% sodium chloride solution. The cell can operate in different charge and discharge mode. Polypyrrole can be reoxidized (doped) with chloride anions either by using dissolved oxygen or by an external power supply, e.g., small photovoltaic cell. In that way, after discharge, capacity retaining can be achieved by using seawater as the electrolyte. During low discharge rate, the delicate balance between solid state diffusion-controlled dedoping and chemical oxidation of polypyrrole produced by hydrogen peroxide is achieved, generating stable voltage plateau. The cell is proposed to operate as a power supply for different sensor devices in two modes. In the low discharge mode (10-20 mA g(-1)), it can be used for data acquisition, and at the fast discharge mode (up to 2 A g(-1)) for collecting data transmission.
PB  - Springer, New York
T2  - Journal of Solid State Electrochemistry
T1  - Seawater zinc/polypyrrole-air cell possessing multifunctional charge-discharge characteristics
EP  - 2777
IS  - 10
SP  - 2769
VL  - 21
DO  - 10.1007/s10008-017-3597-0
ER  - 

@article{
author = "Al-Eggiely, Ali H. and Alguail, Alsadek A. and Gvozdenović, Milica and Jugović, Branimir and Grgur, Branimir",
year = "2017",
abstract = "An environmentally friendly cell using polypyrrole-air regenerative cathode and zinc as anode is investigated in the 3% sodium chloride solution. The cell can operate in different charge and discharge mode. Polypyrrole can be reoxidized (doped) with chloride anions either by using dissolved oxygen or by an external power supply, e.g., small photovoltaic cell. In that way, after discharge, capacity retaining can be achieved by using seawater as the electrolyte. During low discharge rate, the delicate balance between solid state diffusion-controlled dedoping and chemical oxidation of polypyrrole produced by hydrogen peroxide is achieved, generating stable voltage plateau. The cell is proposed to operate as a power supply for different sensor devices in two modes. In the low discharge mode (10-20 mA g(-1)), it can be used for data acquisition, and at the fast discharge mode (up to 2 A g(-1)) for collecting data transmission.",
publisher = "Springer, New York",
journal = "Journal of Solid State Electrochemistry",
title = "Seawater zinc/polypyrrole-air cell possessing multifunctional charge-discharge characteristics",
pages = "2777-2769",
number = "10",
volume = "21",
doi = "10.1007/s10008-017-3597-0"
}

Al-Eggiely, A. H., Alguail, A. A., Gvozdenović, M., Jugović, B.,& Grgur, B.. (2017). Seawater zinc/polypyrrole-air cell possessing multifunctional charge-discharge characteristics. in Journal of Solid State Electrochemistry
Springer, New York., 21(10), 2769-2777.
https://doi.org/10.1007/s10008-017-3597-0

Al-Eggiely AH, Alguail AA, Gvozdenović M, Jugović B, Grgur B. Seawater zinc/polypyrrole-air cell possessing multifunctional charge-discharge characteristics. in Journal of Solid State Electrochemistry. 2017;21(10):2769-2777.
doi:10.1007/s10008-017-3597-0 .

Al-Eggiely, Ali H., Alguail, Alsadek A., Gvozdenović, Milica, Jugović, Branimir, Grgur, Branimir, "Seawater zinc/polypyrrole-air cell possessing multifunctional charge-discharge characteristics" in Journal of Solid State Electrochemistry, 21, no. 10 (2017):2769-2777,
https://doi.org/10.1007/s10008-017-3597-0 . .

TY  - JOUR
AU  - Bobić, Biljana
AU  - Jegdić, Bore
AU  - Jugović, Branimir
AU  - Stevanović, Jasmina
AU  - Gligorijević, Bojan
AU  - Murariu, Alin
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3171
AB  - Causes of failure of brass condenser tubes (CuZn28Sn1) in a thermal power plant in Serbia are analysed. Results of testing by Fourier transformed infrared spectroscopy (FTIR) have indicated the presence of ammonia and nitrogen compounds on fracture surfaces and on the inner surface of the tubes. These compounds are specific agents that cause stress corrosion cracking (SCC) in brass. Analysis of fracture surfaces using scanning electron microscopy (SEM) has shown the brittle transgranular fracture due to the occurrence of SCC. The resistance of brass condenser tubes to other types of corrosion, such as erosion, general and selective corrosion (dezincification) is also considered. Some procedures are proposed to reduce the risk of SCC in the brass condenser tubes.
PB  - Society for Structural Integrity and Life, Institute for Material Testing
T2  - Structural Integrity and Life
T1  - Failures of brass condenser tubes
EP  - 23
IS  - 1
SP  - 19
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3171
ER  - 

@article{
author = "Bobić, Biljana and Jegdić, Bore and Jugović, Branimir and Stevanović, Jasmina and Gligorijević, Bojan and Murariu, Alin",
year = "2016",
abstract = "Causes of failure of brass condenser tubes (CuZn28Sn1) in a thermal power plant in Serbia are analysed. Results of testing by Fourier transformed infrared spectroscopy (FTIR) have indicated the presence of ammonia and nitrogen compounds on fracture surfaces and on the inner surface of the tubes. These compounds are specific agents that cause stress corrosion cracking (SCC) in brass. Analysis of fracture surfaces using scanning electron microscopy (SEM) has shown the brittle transgranular fracture due to the occurrence of SCC. The resistance of brass condenser tubes to other types of corrosion, such as erosion, general and selective corrosion (dezincification) is also considered. Some procedures are proposed to reduce the risk of SCC in the brass condenser tubes.",
publisher = "Society for Structural Integrity and Life, Institute for Material Testing",
journal = "Structural Integrity and Life",
title = "Failures of brass condenser tubes",
pages = "23-19",
number = "1",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3171"
}

Bobić, B., Jegdić, B., Jugović, B., Stevanović, J., Gligorijević, B.,& Murariu, A.. (2016). Failures of brass condenser tubes. in Structural Integrity and Life
Society for Structural Integrity and Life, Institute for Material Testing., 16(1), 19-23.
https://hdl.handle.net/21.15107/rcub_technorep_3171

Bobić B, Jegdić B, Jugović B, Stevanović J, Gligorijević B, Murariu A. Failures of brass condenser tubes. in Structural Integrity and Life. 2016;16(1):19-23.
https://hdl.handle.net/21.15107/rcub_technorep_3171 .

Bobić, Biljana, Jegdić, Bore, Jugović, Branimir, Stevanović, Jasmina, Gligorijević, Bojan, Murariu, Alin, "Failures of brass condenser tubes" in Structural Integrity and Life, 16, no. 1 (2016):19-23,
https://hdl.handle.net/21.15107/rcub_technorep_3171 .

TY  - JOUR
AU  - Bobić, Biljana
AU  - Jegdić, Bore
AU  - Jugović, Branimir
AU  - Stevanović, Jasmina
AU  - Gligorijević, Bojan
AU  - Murariu, Alin
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3180
AB  - Causes of failure of brass condenser tubes (CuZn28Sn1) in a thermal power plant in Serbia are analysed. Results of testing by Fourier transformed infrared spectroscopy (FTIR) have indicated the presence of ammonia and nitro- gen compounds on fracture surfaces and on the inner surface of the tubes. These compounds are specific agents that cause stress corrosion cracking (SCC) in brass. Analy- sis of fracture surfaces using scanning electron microscopy (SEM) has shown the brittle transgranular fracture due to the occurrence of SCC. The resistance of brass condenser tubes to other types of corrosion, such as erosion, general and selective corrosion (dezincification) is also considered. Some procedures are proposed to reduce the risk of SCC in the brass condenser tubes.
AB  - Analizirani su uzroci pojave loma kondenzatorskih cevi od mesinga CuZn28Sn1 u jednoj termoelektrani u Srbiji. Rezultati ispitivanja metodom Furijeove transformisane infracrvene spektroskopije (FTIR) ukazuju na prisustvo amonijačnih i azotnih jedinjenja na površini loma i na unutrašnjoj površini cevi. Ta jedinjenja su specifični agensi za pojavu naponske korozije mesinga. Analiza površine loma primenom skening elektronske mikroskopije (SEM) pokazala je prisustvo krtog transkistalnog loma nastalog usled pojave naponske korozije. Razmatrana je otpornost cevi od mesinga CuZn28Sn1 prema drugim vidovima koro- zije, kao što su eroziona, opšta i selektivna korozija (decin- kacija). Predloženi su postupci za smanjenje rizika od pojave naponske korozije u kondenzatorskim cevima.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Failures of Brass Condenser Tubes
T1  - Lomovi kondenzatorskih cevi od mesinga
EP  - 23
IS  - 1
SP  - 19
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3180
ER  - 

@article{
author = "Bobić, Biljana and Jegdić, Bore and Jugović, Branimir and Stevanović, Jasmina and Gligorijević, Bojan and Murariu, Alin",
year = "2016",
abstract = "Causes of failure of brass condenser tubes (CuZn28Sn1) in a thermal power plant in Serbia are analysed. Results of testing by Fourier transformed infrared spectroscopy (FTIR) have indicated the presence of ammonia and nitro- gen compounds on fracture surfaces and on the inner surface of the tubes. These compounds are specific agents that cause stress corrosion cracking (SCC) in brass. Analy- sis of fracture surfaces using scanning electron microscopy (SEM) has shown the brittle transgranular fracture due to the occurrence of SCC. The resistance of brass condenser tubes to other types of corrosion, such as erosion, general and selective corrosion (dezincification) is also considered. Some procedures are proposed to reduce the risk of SCC in the brass condenser tubes., Analizirani su uzroci pojave loma kondenzatorskih cevi od mesinga CuZn28Sn1 u jednoj termoelektrani u Srbiji. Rezultati ispitivanja metodom Furijeove transformisane infracrvene spektroskopije (FTIR) ukazuju na prisustvo amonijačnih i azotnih jedinjenja na površini loma i na unutrašnjoj površini cevi. Ta jedinjenja su specifični agensi za pojavu naponske korozije mesinga. Analiza površine loma primenom skening elektronske mikroskopije (SEM) pokazala je prisustvo krtog transkistalnog loma nastalog usled pojave naponske korozije. Razmatrana je otpornost cevi od mesinga CuZn28Sn1 prema drugim vidovima koro- zije, kao što su eroziona, opšta i selektivna korozija (decin- kacija). Predloženi su postupci za smanjenje rizika od pojave naponske korozije u kondenzatorskim cevima.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Failures of Brass Condenser Tubes, Lomovi kondenzatorskih cevi od mesinga",
pages = "23-19",
number = "1",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3180"
}

Bobić, B., Jegdić, B., Jugović, B., Stevanović, J., Gligorijević, B.,& Murariu, A.. (2016). Failures of Brass Condenser Tubes. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 16(1), 19-23.
https://hdl.handle.net/21.15107/rcub_technorep_3180

Bobić B, Jegdić B, Jugović B, Stevanović J, Gligorijević B, Murariu A. Failures of Brass Condenser Tubes. in Structural Integrity and Life. 2016;16(1):19-23.
https://hdl.handle.net/21.15107/rcub_technorep_3180 .

Bobić, Biljana, Jegdić, Bore, Jugović, Branimir, Stevanović, Jasmina, Gligorijević, Bojan, Murariu, Alin, "Failures of Brass Condenser Tubes" in Structural Integrity and Life, 16, no. 1 (2016):19-23,
https://hdl.handle.net/21.15107/rcub_technorep_3180 .

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna
AU  - Grgur, Branimir
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Miličević, Dejan S.
AU  - Džunuzović, Enis
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3345
AB  - Novel TiO2-PANI core-shell nanocomposite, prepared by in situ oxidative polymerization of aniline in the presence of TiO2 nanoparticles surface modified with vitamin B6, was used to reinforce epoxy resin. The size of prepared TiO2 nanoparticles and TiO2-PANI nanocomposite were determined by a transmission electron microscopy (TEM). The surface modification of TiO2 nanoparticles was confirmed by FTIR and UV-vis spectroscopy, while the morphology of PANI and TiO2-PANI nanocomposite was investigated by scanning electron microscopy (SEM). The influence of TiO2-PANI nanocomposite on glass transition temperature, dielectric and dynamic mechanical properties, thermooxidative stability, mechanical and anticorrosion properties of epoxy based nanocomposites was investigated and compared to the properties of epoxy/PANI nanocomposites. It has been observed that the glass transition temperature of epoxy resin increases after introduction of PANI and TiO2-PANI nanocomposite, as well as with increasing their content. Prepared nanocomposites exhibited higher value of dielectric constant than pure epoxy resin. Epoxy based coating containing TiO2-PANI nanocomposite showed lower dielectric loss, higher hardness and better anticorrosion properties than pure epoxy resin and epoxy/PANI nanocomposite.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6
EP  - 355
SP  - 346
VL  - 99
DO  - 10.1016/j.porgcoat.2016.06.014
ER  - 

@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna and Grgur, Branimir and Gvozdenović, Milica and Jugović, Branimir and Miličević, Dejan S. and Džunuzović, Enis",
year = "2016",
abstract = "Novel TiO2-PANI core-shell nanocomposite, prepared by in situ oxidative polymerization of aniline in the presence of TiO2 nanoparticles surface modified with vitamin B6, was used to reinforce epoxy resin. The size of prepared TiO2 nanoparticles and TiO2-PANI nanocomposite were determined by a transmission electron microscopy (TEM). The surface modification of TiO2 nanoparticles was confirmed by FTIR and UV-vis spectroscopy, while the morphology of PANI and TiO2-PANI nanocomposite was investigated by scanning electron microscopy (SEM). The influence of TiO2-PANI nanocomposite on glass transition temperature, dielectric and dynamic mechanical properties, thermooxidative stability, mechanical and anticorrosion properties of epoxy based nanocomposites was investigated and compared to the properties of epoxy/PANI nanocomposites. It has been observed that the glass transition temperature of epoxy resin increases after introduction of PANI and TiO2-PANI nanocomposite, as well as with increasing their content. Prepared nanocomposites exhibited higher value of dielectric constant than pure epoxy resin. Epoxy based coating containing TiO2-PANI nanocomposite showed lower dielectric loss, higher hardness and better anticorrosion properties than pure epoxy resin and epoxy/PANI nanocomposite.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6",
pages = "355-346",
volume = "99",
doi = "10.1016/j.porgcoat.2016.06.014"
}

Radoman, T. S., Džunuzović, J., Grgur, B., Gvozdenović, M., Jugović, B., Miličević, D. S.,& Džunuzović, E.. (2016). Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 99, 346-355.
https://doi.org/10.1016/j.porgcoat.2016.06.014

Radoman TS, Džunuzović J, Grgur B, Gvozdenović M, Jugović B, Miličević DS, Džunuzović E. Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6. in Progress in Organic Coatings. 2016;99:346-355.
doi:10.1016/j.porgcoat.2016.06.014 .

Radoman, Tijana S., Džunuzović, Jasna, Grgur, Branimir, Gvozdenović, Milica, Jugović, Branimir, Miličević, Dejan S., Džunuzović, Enis, "Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6" in Progress in Organic Coatings, 99 (2016):346-355,
https://doi.org/10.1016/j.porgcoat.2016.06.014 . .

TY  - JOUR
AU  - Radovanović, Mirjana N.
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica
AU  - Jokić, Bojan
AU  - Grgur, Branimir
AU  - Bugarski, Branko
AU  - Knežević-Jugović, Zorica
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3228
AB  - The immobilization of alpha-amylase via adsorption on magnetic particles coated with polyaniline was studied. The support was characterized by field emission scanning electron microscopy (FESEM). The obtained magnetic particles were agglomerates of nanoparticles with sizes below 100 nm. The effects of various factors on immobilization, including time, the initial enzyme concentration, pH, and temperature, were examined. The optimum pH, temperature, and time for immobilization were established to be 7, 45 degrees C and 75 min, respectively. The maximum amount of adsorbed alpha-amylase of 10/100mg support was determined at the 5 mg/mL enzyme concentration. It appeared that alpha-amylase was stabilized in terms of pH and temperature by adsorption on magnetic particles coated with polyaniline. The good agreement of the equilibrium data with the Langmuir isotherm model confirmed the monolayer coverage of enzyme molecules on the surface of magnetic particles, and the maximum adsorption capacity was found to be 55.6/100mg support at 25 degrees C. The biocatalyst retained 55.5 +/- 1.63% of its initial activity after nine cycles of reuse in starch hydrolysis at 60 degrees C in a batch reactor. The immobilized enzyme also showed very good storage stability.
PB  - Wiley-VCH Verlag Gmbh, Weinheim
T2  - Starch-Starke
T1  - Immobilization of α-amylase via adsorption on magnetic particles coated with polyaniline
EP  - 435
IS  - 5-6
SP  - 427
VL  - 68
DO  - 10.1002/star.201500161
ER  - 

@article{
author = "Radovanović, Mirjana N. and Jugović, Branimir and Gvozdenović, Milica and Jokić, Bojan and Grgur, Branimir and Bugarski, Branko and Knežević-Jugović, Zorica",
year = "2016",
abstract = "The immobilization of alpha-amylase via adsorption on magnetic particles coated with polyaniline was studied. The support was characterized by field emission scanning electron microscopy (FESEM). The obtained magnetic particles were agglomerates of nanoparticles with sizes below 100 nm. The effects of various factors on immobilization, including time, the initial enzyme concentration, pH, and temperature, were examined. The optimum pH, temperature, and time for immobilization were established to be 7, 45 degrees C and 75 min, respectively. The maximum amount of adsorbed alpha-amylase of 10/100mg support was determined at the 5 mg/mL enzyme concentration. It appeared that alpha-amylase was stabilized in terms of pH and temperature by adsorption on magnetic particles coated with polyaniline. The good agreement of the equilibrium data with the Langmuir isotherm model confirmed the monolayer coverage of enzyme molecules on the surface of magnetic particles, and the maximum adsorption capacity was found to be 55.6/100mg support at 25 degrees C. The biocatalyst retained 55.5 +/- 1.63% of its initial activity after nine cycles of reuse in starch hydrolysis at 60 degrees C in a batch reactor. The immobilized enzyme also showed very good storage stability.",
publisher = "Wiley-VCH Verlag Gmbh, Weinheim",
journal = "Starch-Starke",
title = "Immobilization of α-amylase via adsorption on magnetic particles coated with polyaniline",
pages = "435-427",
number = "5-6",
volume = "68",
doi = "10.1002/star.201500161"
}

Radovanović, M. N., Jugović, B., Gvozdenović, M., Jokić, B., Grgur, B., Bugarski, B.,& Knežević-Jugović, Z.. (2016). Immobilization of α-amylase via adsorption on magnetic particles coated with polyaniline. in Starch-Starke
Wiley-VCH Verlag Gmbh, Weinheim., 68(5-6), 427-435.
https://doi.org/10.1002/star.201500161

Radovanović MN, Jugović B, Gvozdenović M, Jokić B, Grgur B, Bugarski B, Knežević-Jugović Z. Immobilization of α-amylase via adsorption on magnetic particles coated with polyaniline. in Starch-Starke. 2016;68(5-6):427-435.
doi:10.1002/star.201500161 .

Radovanović, Mirjana N., Jugović, Branimir, Gvozdenović, Milica, Jokić, Bojan, Grgur, Branimir, Bugarski, Branko, Knežević-Jugović, Zorica, "Immobilization of α-amylase via adsorption on magnetic particles coated with polyaniline" in Starch-Starke, 68, no. 5-6 (2016):427-435,
https://doi.org/10.1002/star.201500161 . .

TY  - JOUR
AU  - Grgur, Branimir
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3214
AB  - The influence of light of the mild steel corrosion in 3% NaCl solution with polyaniline coating based on the possibilities that polyaniline can generate photoelectrons, even in the laboratory conditions has been investigated.
AB  - Ispitivan je uticaj svetlosti na koroziju mekog čelika sa prevlakom polianilina u 3% rastvoru NaCl sa pretpostavkom da polianilin može generisati fotoelektrone čak i u uslovima laboratorijskog osvetljenja.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - The influence of light on corrosion of polyaniline coated mild steel
T1  - Uticaj osvetljenosti na koroziju mekog čelika sa prevlakom polianilina
EP  - 599
IS  - 4
SP  - 597
VL  - 57
DO  - 10.5937/ZasMat1604597G
ER  - 

@article{
author = "Grgur, Branimir and Gvozdenović, Milica and Jugović, Branimir",
year = "2016",
abstract = "The influence of light of the mild steel corrosion in 3% NaCl solution with polyaniline coating based on the possibilities that polyaniline can generate photoelectrons, even in the laboratory conditions has been investigated., Ispitivan je uticaj svetlosti na koroziju mekog čelika sa prevlakom polianilina u 3% rastvoru NaCl sa pretpostavkom da polianilin može generisati fotoelektrone čak i u uslovima laboratorijskog osvetljenja.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "The influence of light on corrosion of polyaniline coated mild steel, Uticaj osvetljenosti na koroziju mekog čelika sa prevlakom polianilina",
pages = "599-597",
number = "4",
volume = "57",
doi = "10.5937/ZasMat1604597G"
}

Grgur, B., Gvozdenović, M.,& Jugović, B.. (2016). The influence of light on corrosion of polyaniline coated mild steel. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 57(4), 597-599.
https://doi.org/10.5937/ZasMat1604597G

Grgur B, Gvozdenović M, Jugović B. The influence of light on corrosion of polyaniline coated mild steel. in Zaštita materijala. 2016;57(4):597-599.
doi:10.5937/ZasMat1604597G .

Grgur, Branimir, Gvozdenović, Milica, Jugović, Branimir, "The influence of light on corrosion of polyaniline coated mild steel" in Zaštita materijala, 57, no. 4 (2016):597-599,
https://doi.org/10.5937/ZasMat1604597G . .

TY  - JOUR
AU  - Grgur, Branimir
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3237
AB  - The potential characteristics of graphite felt electrodes, modified by iron oxide, for oxygen reduction are evaluated. Modification is carried out by Successive Ion Layer Adsorption and Reaction (SILAR) method, using a solution of ferric nitrate in methanol for the adsorption of ions, and a solution of sodium hypochlorite for reaction. The reaction activity of the oxygen reduction from the air, in sodium sulfate based solution varying the number of SILAR cycles, as well as the influence of pH is investigated. By comparing the activity with pure platinum, similar activity is obtained at pH = 9.2, as well as good electrode stability. Possible mechanism of the oxygen reduction on the graphite felt modified by iron oxide is discussed.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Oxygen reduction on SILAR deposited iron oxide onto graphite felt electrode
EP  - 259
SP  - 254
VL  - 212
DO  - 10.1016/j.electacta.2016.07.029
ER  - 

@article{
author = "Grgur, Branimir and Jugović, Branimir and Gvozdenović, Milica",
year = "2016",
abstract = "The potential characteristics of graphite felt electrodes, modified by iron oxide, for oxygen reduction are evaluated. Modification is carried out by Successive Ion Layer Adsorption and Reaction (SILAR) method, using a solution of ferric nitrate in methanol for the adsorption of ions, and a solution of sodium hypochlorite for reaction. The reaction activity of the oxygen reduction from the air, in sodium sulfate based solution varying the number of SILAR cycles, as well as the influence of pH is investigated. By comparing the activity with pure platinum, similar activity is obtained at pH = 9.2, as well as good electrode stability. Possible mechanism of the oxygen reduction on the graphite felt modified by iron oxide is discussed.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Oxygen reduction on SILAR deposited iron oxide onto graphite felt electrode",
pages = "259-254",
volume = "212",
doi = "10.1016/j.electacta.2016.07.029"
}

Grgur, B., Jugović, B.,& Gvozdenović, M.. (2016). Oxygen reduction on SILAR deposited iron oxide onto graphite felt electrode. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 212, 254-259.
https://doi.org/10.1016/j.electacta.2016.07.029

Grgur B, Jugović B, Gvozdenović M. Oxygen reduction on SILAR deposited iron oxide onto graphite felt electrode. in Electrochimica Acta. 2016;212:254-259.
doi:10.1016/j.electacta.2016.07.029 .

Grgur, Branimir, Jugović, Branimir, Gvozdenović, Milica, "Oxygen reduction on SILAR deposited iron oxide onto graphite felt electrode" in Electrochimica Acta, 212 (2016):254-259,
https://doi.org/10.1016/j.electacta.2016.07.029 . .

TY  - JOUR
AU  - Šekuljica, Nataša
AU  - Gvozdenović, Milica
AU  - Knežević-Jugović, Zorica
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3239
AB  - The potential application of electrochemically formed copper sulfide as horseradish peroxidase mediator in the enzymatic biofuel cell and anthraquinone AV109 dye as a fuel is investigated. The open circuit voltage of 0.52 V and short circuit current of similar to 3.6 mu A/cm(2) are obtained, with the maximum specific power of similar to 1 mu W/cm(2). The influence of internal resistance of the cell is discussed. Decolorization is investigated under open circuit potentials, and under external load of 3.31 k Omega conditions. In both cases, 40% of decolorization is achieved, but are three times faster under external load conditions. Specific energy during decolorization in such cell is estimated to 5 mWh/m(2). The possible mechanism of the power generation during decolorization of AV 109 dye is discussed.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Energy Chemistry
T1  - Biofuel cell based on horseradish peroxidase immobilized on copper sulfide as anode for decolorization of anthraquinone AV109 dye
EP  - 408
IS  - 3
SP  - 403
VL  - 25
DO  - 10.1016/j.jechem.2016.03.011
ER  - 

@article{
author = "Šekuljica, Nataša and Gvozdenović, Milica and Knežević-Jugović, Zorica and Jugović, Branimir and Grgur, Branimir",
year = "2016",
abstract = "The potential application of electrochemically formed copper sulfide as horseradish peroxidase mediator in the enzymatic biofuel cell and anthraquinone AV109 dye as a fuel is investigated. The open circuit voltage of 0.52 V and short circuit current of similar to 3.6 mu A/cm(2) are obtained, with the maximum specific power of similar to 1 mu W/cm(2). The influence of internal resistance of the cell is discussed. Decolorization is investigated under open circuit potentials, and under external load of 3.31 k Omega conditions. In both cases, 40% of decolorization is achieved, but are three times faster under external load conditions. Specific energy during decolorization in such cell is estimated to 5 mWh/m(2). The possible mechanism of the power generation during decolorization of AV 109 dye is discussed.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Energy Chemistry",
title = "Biofuel cell based on horseradish peroxidase immobilized on copper sulfide as anode for decolorization of anthraquinone AV109 dye",
pages = "408-403",
number = "3",
volume = "25",
doi = "10.1016/j.jechem.2016.03.011"
}

Šekuljica, N., Gvozdenović, M., Knežević-Jugović, Z., Jugović, B.,& Grgur, B.. (2016). Biofuel cell based on horseradish peroxidase immobilized on copper sulfide as anode for decolorization of anthraquinone AV109 dye. in Journal of Energy Chemistry
Elsevier Science Bv, Amsterdam., 25(3), 403-408.
https://doi.org/10.1016/j.jechem.2016.03.011

Šekuljica N, Gvozdenović M, Knežević-Jugović Z, Jugović B, Grgur B. Biofuel cell based on horseradish peroxidase immobilized on copper sulfide as anode for decolorization of anthraquinone AV109 dye. in Journal of Energy Chemistry. 2016;25(3):403-408.
doi:10.1016/j.jechem.2016.03.011 .

Šekuljica, Nataša, Gvozdenović, Milica, Knežević-Jugović, Zorica, Jugović, Branimir, Grgur, Branimir, "Biofuel cell based on horseradish peroxidase immobilized on copper sulfide as anode for decolorization of anthraquinone AV109 dye" in Journal of Energy Chemistry, 25, no. 3 (2016):403-408,
https://doi.org/10.1016/j.jechem.2016.03.011 . .

TY  - JOUR
AU  - Omymen, Waleed M.
AU  - Ebshish, Ali S.
AU  - Jugović, Branimir
AU  - Trišović, Tomislav
AU  - Gvozdenović, Milica
AU  - Grgur, Branimir
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3257
AB  - The fast reaction of forced hydrolysis of iron(111) nitrate in hypochlorite solution at room temperature, leads to the formation of mainly hematite, alpha-Fe203. Successive ion adsorption and reaction (SILAR) is applied to decorate an electrochemically formed TiO2 nanotube electrode. The anodic photo electrochemical behavior of pure TiO2-NT's and modified electrodes are investigated in a sulfate containing solution at pH =9.2. It is shown that such a modification leads to an increase of anodic photoactivity, as well as that at the same current density, the photoelectrochemical cell with a modified electrode operates at a voltage lower by 0.7 V. The band gap and flat band potentials are estimated, and the structure of the band gap and possible charge transfer reactions and mechanism are discussed.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Photoelectochemical behavior of TiO2-NT's modified with SILAR deposited iron oxide
EP  - 143
SP  - 136
VL  - 203
DO  - 10.1016/j.electacta.2016.04.038
ER  - 

@article{
author = "Omymen, Waleed M. and Ebshish, Ali S. and Jugović, Branimir and Trišović, Tomislav and Gvozdenović, Milica and Grgur, Branimir",
year = "2016",
abstract = "The fast reaction of forced hydrolysis of iron(111) nitrate in hypochlorite solution at room temperature, leads to the formation of mainly hematite, alpha-Fe203. Successive ion adsorption and reaction (SILAR) is applied to decorate an electrochemically formed TiO2 nanotube electrode. The anodic photo electrochemical behavior of pure TiO2-NT's and modified electrodes are investigated in a sulfate containing solution at pH =9.2. It is shown that such a modification leads to an increase of anodic photoactivity, as well as that at the same current density, the photoelectrochemical cell with a modified electrode operates at a voltage lower by 0.7 V. The band gap and flat band potentials are estimated, and the structure of the band gap and possible charge transfer reactions and mechanism are discussed.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Photoelectochemical behavior of TiO2-NT's modified with SILAR deposited iron oxide",
pages = "143-136",
volume = "203",
doi = "10.1016/j.electacta.2016.04.038"
}

Omymen, W. M., Ebshish, A. S., Jugović, B., Trišović, T., Gvozdenović, M.,& Grgur, B.. (2016). Photoelectochemical behavior of TiO2-NT's modified with SILAR deposited iron oxide. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 203, 136-143.
https://doi.org/10.1016/j.electacta.2016.04.038

Omymen WM, Ebshish AS, Jugović B, Trišović T, Gvozdenović M, Grgur B. Photoelectochemical behavior of TiO2-NT's modified with SILAR deposited iron oxide. in Electrochimica Acta. 2016;203:136-143.
doi:10.1016/j.electacta.2016.04.038 .

Omymen, Waleed M., Ebshish, Ali S., Jugović, Branimir, Trišović, Tomislav, Gvozdenović, Milica, Grgur, Branimir, "Photoelectochemical behavior of TiO2-NT's modified with SILAR deposited iron oxide" in Electrochimica Acta, 203 (2016):136-143,
https://doi.org/10.1016/j.electacta.2016.04.038 . .

TY  - JOUR
AU  - Al-Eggiely, Ali H.
AU  - Alguail, Alsadek A.
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3427
AB  - An environmentally friendly cell using polypyrrole-air regenerative cathode and zinc as anode, is investigated in the 3.5% sodium chloride solution for the possible applications as the sea water cell. It is shown that cell can deliver constant current in the range of tens of milliamps per gram of polypyrrole, and in the range of hundreds of milliamps under impulse discharge mod, with the cell voltage above 0.8 V, over significant period of time. It is suggested that cell could be considered, at least as a secondary power in a remote sensor buoy system for the monitoring shallow marine environments.
PB  - Electrochemical Science Group, Beograd
T2  - International Journal of Electrochemical Science
T1  - Zinc Polypyrrole-air Sea Water Battery
EP  - 10277
IS  - 12
SP  - 10270
VL  - 11
DO  - 10.20964/2016.12.35
ER  - 

@article{
author = "Al-Eggiely, Ali H. and Alguail, Alsadek A. and Gvozdenović, Milica and Jugović, Branimir and Grgur, Branimir",
year = "2016",
abstract = "An environmentally friendly cell using polypyrrole-air regenerative cathode and zinc as anode, is investigated in the 3.5% sodium chloride solution for the possible applications as the sea water cell. It is shown that cell can deliver constant current in the range of tens of milliamps per gram of polypyrrole, and in the range of hundreds of milliamps under impulse discharge mod, with the cell voltage above 0.8 V, over significant period of time. It is suggested that cell could be considered, at least as a secondary power in a remote sensor buoy system for the monitoring shallow marine environments.",
publisher = "Electrochemical Science Group, Beograd",
journal = "International Journal of Electrochemical Science",
title = "Zinc Polypyrrole-air Sea Water Battery",
pages = "10277-10270",
number = "12",
volume = "11",
doi = "10.20964/2016.12.35"
}

Al-Eggiely, A. H., Alguail, A. A., Gvozdenović, M., Jugović, B.,& Grgur, B.. (2016). Zinc Polypyrrole-air Sea Water Battery. in International Journal of Electrochemical Science
Electrochemical Science Group, Beograd., 11(12), 10270-10277.
https://doi.org/10.20964/2016.12.35

Al-Eggiely AH, Alguail AA, Gvozdenović M, Jugović B, Grgur B. Zinc Polypyrrole-air Sea Water Battery. in International Journal of Electrochemical Science. 2016;11(12):10270-10277.
doi:10.20964/2016.12.35 .

Al-Eggiely, Ali H., Alguail, Alsadek A., Gvozdenović, Milica, Jugović, Branimir, Grgur, Branimir, "Zinc Polypyrrole-air Sea Water Battery" in International Journal of Electrochemical Science, 11, no. 12 (2016):10270-10277,
https://doi.org/10.20964/2016.12.35 . .

TY  - JOUR
AU  - Alguail, Alsadek A.
AU  - Al-Eggiely, Ali H.
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3445
AB  - The electrochemically synthesized polypyrrole and lead-lead sulfate is examined as a potential electrodes for battery-type hybrid supercapacitors in acidic solution. The device exhibits battery-type behavior at low discharge rate, e.g.  lt 0.5 A g(-1), and supercapacitors-type behavior at a higher discharge rate. Discharge in the specific current range of similar to 0.6-2.27 A g(-1) based on the active masses, can deliver capacity of 90-72 Ah kg(-1), energy of 58-40 Wh kg(-1) and power of 40-1350 W kg(-1), with the specific capacitance of the cell in the range of 300-250 F g(-1). The experimentally obtained values are compared with theoretical.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Power Sources
T1  - Battery type hybrid supercapacitor based on polypyrrole and lead-lead sulfate
EP  - 246
SP  - 240
VL  - 313
DO  - 10.1016/j.jpowsour.2016.02.081
ER  - 

@article{
author = "Alguail, Alsadek A. and Al-Eggiely, Ali H. and Gvozdenović, Milica and Jugović, Branimir and Grgur, Branimir",
year = "2016",
abstract = "The electrochemically synthesized polypyrrole and lead-lead sulfate is examined as a potential electrodes for battery-type hybrid supercapacitors in acidic solution. The device exhibits battery-type behavior at low discharge rate, e.g.  lt 0.5 A g(-1), and supercapacitors-type behavior at a higher discharge rate. Discharge in the specific current range of similar to 0.6-2.27 A g(-1) based on the active masses, can deliver capacity of 90-72 Ah kg(-1), energy of 58-40 Wh kg(-1) and power of 40-1350 W kg(-1), with the specific capacitance of the cell in the range of 300-250 F g(-1). The experimentally obtained values are compared with theoretical.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Power Sources",
title = "Battery type hybrid supercapacitor based on polypyrrole and lead-lead sulfate",
pages = "246-240",
volume = "313",
doi = "10.1016/j.jpowsour.2016.02.081"
}

Alguail, A. A., Al-Eggiely, A. H., Gvozdenović, M., Jugović, B.,& Grgur, B.. (2016). Battery type hybrid supercapacitor based on polypyrrole and lead-lead sulfate. in Journal of Power Sources
Elsevier Science Bv, Amsterdam., 313, 240-246.
https://doi.org/10.1016/j.jpowsour.2016.02.081

Alguail AA, Al-Eggiely AH, Gvozdenović M, Jugović B, Grgur B. Battery type hybrid supercapacitor based on polypyrrole and lead-lead sulfate. in Journal of Power Sources. 2016;313:240-246.
doi:10.1016/j.jpowsour.2016.02.081 .

Alguail, Alsadek A., Al-Eggiely, Ali H., Gvozdenović, Milica, Jugović, Branimir, Grgur, Branimir, "Battery type hybrid supercapacitor based on polypyrrole and lead-lead sulfate" in Journal of Power Sources, 313 (2016):240-246,
https://doi.org/10.1016/j.jpowsour.2016.02.081 . .

TY  - JOUR
AU  - Jugović, Branimir
AU  - Grgur, Branimir
AU  - Antov, Mirjana
AU  - Knežević-Jugović, Zorica
AU  - Stevanović, Jasmina
AU  - Gvozdenović, Milica
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3184
AB  - Polypyrrole enzyme electrode was formed by immobilization of glucose oxidase via glutaraldehyde into electrochemically synthesized polypyrrole on glassy carbon electrode. Electrochemical synthesis was performed in 0.5 mol dm(-3) HCl and 0.2 mol dm(-3) pyrrole at constant current density of 2 mA cm(-2). Chronopotentiometric curves of polypyrrole enzyme electrode were recorded at current density of 42 nA cm(-2) for different glucose concentrations. The determined value of the apparent Michaelis-Menten constant was 0.045 mmol dm(-3) which is significantly lower than that of free enzyme indicating enhanced enzyme efficiency when it is immobilized into electroconducting polymer matrix.
PB  - Electrochemical Science Group, Beograd
T2  - International Journal of Electrochemical Science
T1  - Polypyrrole-based Enzyme Electrode with Immobilized Glucose Oxidase for Electrochemical Determination of Glucose
EP  - 1161
IS  - 2
SP  - 1152
VL  - 11
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3184
ER  - 

@article{
author = "Jugović, Branimir and Grgur, Branimir and Antov, Mirjana and Knežević-Jugović, Zorica and Stevanović, Jasmina and Gvozdenović, Milica",
year = "2016",
abstract = "Polypyrrole enzyme electrode was formed by immobilization of glucose oxidase via glutaraldehyde into electrochemically synthesized polypyrrole on glassy carbon electrode. Electrochemical synthesis was performed in 0.5 mol dm(-3) HCl and 0.2 mol dm(-3) pyrrole at constant current density of 2 mA cm(-2). Chronopotentiometric curves of polypyrrole enzyme electrode were recorded at current density of 42 nA cm(-2) for different glucose concentrations. The determined value of the apparent Michaelis-Menten constant was 0.045 mmol dm(-3) which is significantly lower than that of free enzyme indicating enhanced enzyme efficiency when it is immobilized into electroconducting polymer matrix.",
publisher = "Electrochemical Science Group, Beograd",
journal = "International Journal of Electrochemical Science",
title = "Polypyrrole-based Enzyme Electrode with Immobilized Glucose Oxidase for Electrochemical Determination of Glucose",
pages = "1161-1152",
number = "2",
volume = "11",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3184"
}

Jugović, B., Grgur, B., Antov, M., Knežević-Jugović, Z., Stevanović, J.,& Gvozdenović, M.. (2016). Polypyrrole-based Enzyme Electrode with Immobilized Glucose Oxidase for Electrochemical Determination of Glucose. in International Journal of Electrochemical Science
Electrochemical Science Group, Beograd., 11(2), 1152-1161.
https://hdl.handle.net/21.15107/rcub_technorep_3184

Jugović B, Grgur B, Antov M, Knežević-Jugović Z, Stevanović J, Gvozdenović M. Polypyrrole-based Enzyme Electrode with Immobilized Glucose Oxidase for Electrochemical Determination of Glucose. in International Journal of Electrochemical Science. 2016;11(2):1152-1161.
https://hdl.handle.net/21.15107/rcub_technorep_3184 .

Jugović, Branimir, Grgur, Branimir, Antov, Mirjana, Knežević-Jugović, Zorica, Stevanović, Jasmina, Gvozdenović, Milica, "Polypyrrole-based Enzyme Electrode with Immobilized Glucose Oxidase for Electrochemical Determination of Glucose" in International Journal of Electrochemical Science, 11, no. 2 (2016):1152-1161,
https://hdl.handle.net/21.15107/rcub_technorep_3184 .

TY  - JOUR
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3200
AB  - Due to unique properties of intrinsically conducting polymers (ICP) such as: electrical conductivity, reversible electrochemistry, optical activity, biocompatibility, environmental and corrosion stability, they still represent a base for both theoretical and practical studies. The mentioned properties open up possibilities for practical application in the field of electrochemical systems for energy storage and conversion, sensors, biosensors, antistatic coatings, magnetic shielding, active corrosion protection etc. Bearing in mind that nanostructurization of materials lead to improvement of physical and chemical properties, there is a growing interest in the development of nanosized ICP. Nanosized ICP can be prepared by both chemical and electrochemical procedures. Although chemical synthesis is a common approach, there are also not a few studies of electrochemical synthesis of ICP. The aim of this paper is to review literature dedicated to electrochemical formation of nanostructured ICP with special attention dedicated to polyaniline and polypyrrole as the most popular ICPs.
AB  - Interesovanje za elektroprovodne polimere kako u teorijskom tako i praktičnom smislu utemeljeno je u jedinstvenim svojstvima ovih materijala, kao što su: kontrolisana električna provodljivost, reverzibilna oksidacija redukcija (dopovanje/dedopovanje), optička aktivnost, bio-kompatibilnost, korziona postojanost itd. Ova svojstva otvaraju mogućnosti praktične primene u oblasti elektrohemisjkih primarnih i sekundarnih izvora električne energije, elektrohemijskih kondenzatora, senzorima, biosenzorima, aktivnoj zaštiti od korozije. Imajući u vidu da nanostrukturizacija materijala dovodi do značajnog poboljšanja fizičkih i hemijskih svojstava materijala postoji veliko interesovanje za proučavanje nanostruktuirasnih elektroporvodnih polimera. Nanostruktuirani elektroprovodni polimeri mogu se dobiti hemijskim i elektrohemijskim postupcima sinteze. Iako je hemijska sinteza zastupljenija, u literaturi može se naći značajan broj radova posvećen elektrohemisjkom formiranju nanostruktuiranih elektroprovodnih polimera, pa je upravo i ovaj tekst posvećen toj probelmatici, u prvom redu elektrohemisjkom formiranju nanostruktura polianilina i polipirola kao najznačajnijih predstavnika elektroprovodnih polimera.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Nanostructured intrinsically conducting polymers formed by electrochemical synthesis
T1  - Nanostruktuirani elektroprovodni polimeri dobijeni elektrohemijskom sintezom
EP  - 79
IS  - 1
SP  - 71
VL  - 57
DO  - 10.5937/ZasMat1601071G
ER  - 

@article{
author = "Gvozdenović, Milica and Jugović, Branimir and Grgur, Branimir",
year = "2016",
abstract = "Due to unique properties of intrinsically conducting polymers (ICP) such as: electrical conductivity, reversible electrochemistry, optical activity, biocompatibility, environmental and corrosion stability, they still represent a base for both theoretical and practical studies. The mentioned properties open up possibilities for practical application in the field of electrochemical systems for energy storage and conversion, sensors, biosensors, antistatic coatings, magnetic shielding, active corrosion protection etc. Bearing in mind that nanostructurization of materials lead to improvement of physical and chemical properties, there is a growing interest in the development of nanosized ICP. Nanosized ICP can be prepared by both chemical and electrochemical procedures. Although chemical synthesis is a common approach, there are also not a few studies of electrochemical synthesis of ICP. The aim of this paper is to review literature dedicated to electrochemical formation of nanostructured ICP with special attention dedicated to polyaniline and polypyrrole as the most popular ICPs., Interesovanje za elektroprovodne polimere kako u teorijskom tako i praktičnom smislu utemeljeno je u jedinstvenim svojstvima ovih materijala, kao što su: kontrolisana električna provodljivost, reverzibilna oksidacija redukcija (dopovanje/dedopovanje), optička aktivnost, bio-kompatibilnost, korziona postojanost itd. Ova svojstva otvaraju mogućnosti praktične primene u oblasti elektrohemisjkih primarnih i sekundarnih izvora električne energije, elektrohemijskih kondenzatora, senzorima, biosenzorima, aktivnoj zaštiti od korozije. Imajući u vidu da nanostrukturizacija materijala dovodi do značajnog poboljšanja fizičkih i hemijskih svojstava materijala postoji veliko interesovanje za proučavanje nanostruktuirasnih elektroporvodnih polimera. Nanostruktuirani elektroprovodni polimeri mogu se dobiti hemijskim i elektrohemijskim postupcima sinteze. Iako je hemijska sinteza zastupljenija, u literaturi može se naći značajan broj radova posvećen elektrohemisjkom formiranju nanostruktuiranih elektroprovodnih polimera, pa je upravo i ovaj tekst posvećen toj probelmatici, u prvom redu elektrohemisjkom formiranju nanostruktura polianilina i polipirola kao najznačajnijih predstavnika elektroprovodnih polimera.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Nanostructured intrinsically conducting polymers formed by electrochemical synthesis, Nanostruktuirani elektroprovodni polimeri dobijeni elektrohemijskom sintezom",
pages = "79-71",
number = "1",
volume = "57",
doi = "10.5937/ZasMat1601071G"
}

Gvozdenović, M., Jugović, B.,& Grgur, B.. (2016). Nanostructured intrinsically conducting polymers formed by electrochemical synthesis. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 57(1), 71-79.
https://doi.org/10.5937/ZasMat1601071G

Gvozdenović M, Jugović B, Grgur B. Nanostructured intrinsically conducting polymers formed by electrochemical synthesis. in Zaštita materijala. 2016;57(1):71-79.
doi:10.5937/ZasMat1601071G .

Gvozdenović, Milica, Jugović, Branimir, Grgur, Branimir, "Nanostructured intrinsically conducting polymers formed by electrochemical synthesis" in Zaštita materijala, 57, no. 1 (2016):71-79,
https://doi.org/10.5937/ZasMat1601071G . .

TY  - JOUR
AU  - Trišović, Tomislav
AU  - Spasojević, Miroslav D.
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Rafailović, Lidija
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3252
AB  - The most common disinfectants for water treatment are based on chlorine and its compounds. Practically, water treatments with chlorine compounds have no alternative, since they provide, in comparison to other effective processes such as ozonization or ultraviolet irradiation, high residual disinfection capacity. Unfortunately, all of chlorine-based compounds for disinfection tend to degrade during storage, thus reducing the concentration of active chlorine. Apart from degradation, additional problems are transportation, storage and handling of such hazardous compounds. Nowadays, a lot of attention is paid to the development of electrochemical devices for in situ production of chlorine dioxide or sodium hypochlorite as efficient disinfectants for water treatment. The most important part of such a device is the electrochemical reactor. Electrochemical reactor uses external source of direct current in order to produce disinfectants in electrochemical reactions occurring at the electrodes. Construction of an electrochemical device for water treatment is based on evaluation of optimal conditions for electrochemical reactions during continues production of disinfectants. The aim of this study was to develop a low-cost electrochemical device for the production of disinfectant, active chlorine, at the place of its usage, based on newly developed technical solutions and newest commercial components. The projected electrochemical device was constructed and mounted, and its operation was investigated. Investigations involved both functionality of individual components and device in general. The major goal of these investigations was to achieve maximal efficiency in extreme condition of elevated room temperature and humidity with a novel device construction involving coaxial heat exchanger at the solution inlet. Room operation of the proposed device was investigated when relative humidity was set to 90% and the ambient temperature of 38 degrees C. The obtained results in such extreme operation conditions reveled that it was possible to obtain required concentration of 0.85% of active chlorine with maximal temperature of outlet electrolyte of 35.3 degrees C, which is within the limits of optimal temperatures.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Automatic devices for electrochemical water treatment with cooling of electrolyte
EP  - 207
IS  - 2
SP  - 201
VL  - 70
DO  - 10.2298/HEMIND140822026T
ER  - 

@article{
author = "Trišović, Tomislav and Spasojević, Miroslav D. and Gvozdenović, Milica and Jugović, Branimir and Rafailović, Lidija",
year = "2016",
abstract = "The most common disinfectants for water treatment are based on chlorine and its compounds. Practically, water treatments with chlorine compounds have no alternative, since they provide, in comparison to other effective processes such as ozonization or ultraviolet irradiation, high residual disinfection capacity. Unfortunately, all of chlorine-based compounds for disinfection tend to degrade during storage, thus reducing the concentration of active chlorine. Apart from degradation, additional problems are transportation, storage and handling of such hazardous compounds. Nowadays, a lot of attention is paid to the development of electrochemical devices for in situ production of chlorine dioxide or sodium hypochlorite as efficient disinfectants for water treatment. The most important part of such a device is the electrochemical reactor. Electrochemical reactor uses external source of direct current in order to produce disinfectants in electrochemical reactions occurring at the electrodes. Construction of an electrochemical device for water treatment is based on evaluation of optimal conditions for electrochemical reactions during continues production of disinfectants. The aim of this study was to develop a low-cost electrochemical device for the production of disinfectant, active chlorine, at the place of its usage, based on newly developed technical solutions and newest commercial components. The projected electrochemical device was constructed and mounted, and its operation was investigated. Investigations involved both functionality of individual components and device in general. The major goal of these investigations was to achieve maximal efficiency in extreme condition of elevated room temperature and humidity with a novel device construction involving coaxial heat exchanger at the solution inlet. Room operation of the proposed device was investigated when relative humidity was set to 90% and the ambient temperature of 38 degrees C. The obtained results in such extreme operation conditions reveled that it was possible to obtain required concentration of 0.85% of active chlorine with maximal temperature of outlet electrolyte of 35.3 degrees C, which is within the limits of optimal temperatures.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Automatic devices for electrochemical water treatment with cooling of electrolyte",
pages = "207-201",
number = "2",
volume = "70",
doi = "10.2298/HEMIND140822026T"
}

Trišović, T., Spasojević, M. D., Gvozdenović, M., Jugović, B.,& Rafailović, L.. (2016). Automatic devices for electrochemical water treatment with cooling of electrolyte. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 70(2), 201-207.
https://doi.org/10.2298/HEMIND140822026T

Trišović T, Spasojević MD, Gvozdenović M, Jugović B, Rafailović L. Automatic devices for electrochemical water treatment with cooling of electrolyte. in Hemijska industrija. 2016;70(2):201-207.
doi:10.2298/HEMIND140822026T .

Trišović, Tomislav, Spasojević, Miroslav D., Gvozdenović, Milica, Jugović, Branimir, Rafailović, Lidija, "Automatic devices for electrochemical water treatment with cooling of electrolyte" in Hemijska industrija, 70, no. 2 (2016):201-207,
https://doi.org/10.2298/HEMIND140822026T . .

TY  - JOUR
AU  - Jakovetić, Sonja
AU  - Luković, Nevena
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica
AU  - Grbavčić, Sanja
AU  - Jovanović, Jelena
AU  - Knežević-Jugović, Zorica
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3008
AB  - The objective of this research was to design an efficient continuously operated membrane reactor with a separation unit for egg white protein (EWP) hydrolysis and production of hydrolysates with improved antioxidant properties. For this purpose, a mechanically stirred tank reactor coupled with the polyethersulfone ultrafiltration module with a molecular weight cutoff of 10 kDa was employed. Several proteolytic enzymes have been tested in order to obtain the best quality of peptide-based formulations intended for human consumption. Among protease from Bacillus licheniformis (Alcalase), protease from Bacillus amyloliquefaciens (Neutrase), and protease from papaya latex (papain), the highest degree of hydrolysis (DH), as well as the best antioxidant properties of obtained hydrolysates, was achieved with Alcalase. The effects of operating variables such as enzyme/substrate ([E]/[S]) ratio, impeller speed, and permeate flow rate were further studied using response surface methodology (RSM) and Box-Behnken experimental design. Results obtained in RSM analysis confirmed that over the studied range [E]/[S] ratio, impeller speed and permeate flow rate had the significant effect on the DH and reactor capacity. The effects of different impeller geometries were also studied and four-bladed propeller stirrer enabled the highest DH. Antioxidant properties were analyzed by the 2,2-diphenyl-1-picrylhydrazyl (DPPH), by the 2,2'-azino-bis-(3-ethylbenzothiazoline)-6-sulfonic acid (ABTS) radical scavenging activity, and by the linear voltammetry methods. Results show that the use of Alcalase in the membrane reactor system is of potential interest for the EWP hydrolysis and obtaining value-added egg products.
PB  - Springer, New York
T2  - Food and Bioprocess Technology
T1  - Production of Antioxidant Egg White Hydrolysates in a Continuous Stirred Tank Enzyme Reactor Coupled with Membrane Separation Unit
EP  - 300
IS  - 2
SP  - 287
VL  - 8
DO  - 10.1007/s11947-014-1402-y
ER  - 

@article{
author = "Jakovetić, Sonja and Luković, Nevena and Jugović, Branimir and Gvozdenović, Milica and Grbavčić, Sanja and Jovanović, Jelena and Knežević-Jugović, Zorica",
year = "2015",
abstract = "The objective of this research was to design an efficient continuously operated membrane reactor with a separation unit for egg white protein (EWP) hydrolysis and production of hydrolysates with improved antioxidant properties. For this purpose, a mechanically stirred tank reactor coupled with the polyethersulfone ultrafiltration module with a molecular weight cutoff of 10 kDa was employed. Several proteolytic enzymes have been tested in order to obtain the best quality of peptide-based formulations intended for human consumption. Among protease from Bacillus licheniformis (Alcalase), protease from Bacillus amyloliquefaciens (Neutrase), and protease from papaya latex (papain), the highest degree of hydrolysis (DH), as well as the best antioxidant properties of obtained hydrolysates, was achieved with Alcalase. The effects of operating variables such as enzyme/substrate ([E]/[S]) ratio, impeller speed, and permeate flow rate were further studied using response surface methodology (RSM) and Box-Behnken experimental design. Results obtained in RSM analysis confirmed that over the studied range [E]/[S] ratio, impeller speed and permeate flow rate had the significant effect on the DH and reactor capacity. The effects of different impeller geometries were also studied and four-bladed propeller stirrer enabled the highest DH. Antioxidant properties were analyzed by the 2,2-diphenyl-1-picrylhydrazyl (DPPH), by the 2,2'-azino-bis-(3-ethylbenzothiazoline)-6-sulfonic acid (ABTS) radical scavenging activity, and by the linear voltammetry methods. Results show that the use of Alcalase in the membrane reactor system is of potential interest for the EWP hydrolysis and obtaining value-added egg products.",
publisher = "Springer, New York",
journal = "Food and Bioprocess Technology",
title = "Production of Antioxidant Egg White Hydrolysates in a Continuous Stirred Tank Enzyme Reactor Coupled with Membrane Separation Unit",
pages = "300-287",
number = "2",
volume = "8",
doi = "10.1007/s11947-014-1402-y"
}

Jakovetić, S., Luković, N., Jugović, B., Gvozdenović, M., Grbavčić, S., Jovanović, J.,& Knežević-Jugović, Z.. (2015). Production of Antioxidant Egg White Hydrolysates in a Continuous Stirred Tank Enzyme Reactor Coupled with Membrane Separation Unit. in Food and Bioprocess Technology
Springer, New York., 8(2), 287-300.
https://doi.org/10.1007/s11947-014-1402-y

Jakovetić S, Luković N, Jugović B, Gvozdenović M, Grbavčić S, Jovanović J, Knežević-Jugović Z. Production of Antioxidant Egg White Hydrolysates in a Continuous Stirred Tank Enzyme Reactor Coupled with Membrane Separation Unit. in Food and Bioprocess Technology. 2015;8(2):287-300.
doi:10.1007/s11947-014-1402-y .

Jakovetić, Sonja, Luković, Nevena, Jugović, Branimir, Gvozdenović, Milica, Grbavčić, Sanja, Jovanović, Jelena, Knežević-Jugović, Zorica, "Production of Antioxidant Egg White Hydrolysates in a Continuous Stirred Tank Enzyme Reactor Coupled with Membrane Separation Unit" in Food and Bioprocess Technology, 8, no. 2 (2015):287-300,
https://doi.org/10.1007/s11947-014-1402-y . .