TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Vujancević, Jelena D.
AU  - Masković, Pavle Z.
AU  - Cirković, Jovana
AU  - Papan, Jelena M.
AU  - Kosanović, Darko
AU  - Dramicanin, Miroslav D.
AU  - Petrović, Predrag B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4931
AB  - Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (E-g) and, consequently, to investigate changes in the E-g value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.
PB  - Wiley, Hoboken
T2  - Journal of the American Ceramic Society
T1  - Structure and enhanced antimicrobial activity of mechanically activated nano TiO2
EP  - 7745
IS  - 12
SP  - 7735
VL  - 102
DO  - 10.1111/jace.16668
ER  - 

@article{
author = "Pavlović, Vera P. and Vujancević, Jelena D. and Masković, Pavle Z. and Cirković, Jovana and Papan, Jelena M. and Kosanović, Darko and Dramicanin, Miroslav D. and Petrović, Predrag B. and Vlahović, Branislav and Pavlović, Vladimir",
year = "2019",
abstract = "Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (E-g) and, consequently, to investigate changes in the E-g value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.",
publisher = "Wiley, Hoboken",
journal = "Journal of the American Ceramic Society",
title = "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2",
pages = "7745-7735",
number = "12",
volume = "102",
doi = "10.1111/jace.16668"
}

Pavlović, V. P., Vujancević, J. D., Masković, P. Z., Cirković, J., Papan, J. M., Kosanović, D., Dramicanin, M. D., Petrović, P. B., Vlahović, B.,& Pavlović, V.. (2019). Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society
Wiley, Hoboken., 102(12), 7735-7745.
https://doi.org/10.1111/jace.16668

Pavlović VP, Vujancević JD, Masković PZ, Cirković J, Papan JM, Kosanović D, Dramicanin MD, Petrović PB, Vlahović B, Pavlović V. Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society. 2019;102(12):7735-7745.
doi:10.1111/jace.16668 .

Pavlović, Vera P., Vujancević, Jelena D., Masković, Pavle Z., Cirković, Jovana, Papan, Jelena M., Kosanović, Darko, Dramicanin, Miroslav D., Petrović, Predrag B., Vlahović, Branislav, Pavlović, Vladimir, "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2" in Journal of the American Ceramic Society, 102, no. 12 (2019):7735-7745,
https://doi.org/10.1111/jace.16668 . .

TY  - JOUR
AU  - Kosanović, Darko
AU  - Blagojević, Vladimir A.
AU  - Maricić, A.
AU  - Aleksić, S.
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir
AU  - Vlahović, Branislav
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4755
AB  - Barium hexaferrite ceramics were prepared using mechanically activated mixtures of iron and barium titanate. The 60:40 mass% Fe:BaTiO3 powder mixtures were mechanically activated for different times (100-240 min) and sintered at 1100 and 1200 degrees C in order to determine the influence of mechanical activation of the precursor on the magnetic and dielectric properties of the resulting barium hexaferrite ceramics. The final product contained 84-89 mass% of Ba2Fe22.46O38Ti1.54 phase, with higher content corresponding to longer mechanical activation of the precursor. XRD and Raman measurements indicated that the remainder of the sample consists of leftover BaTiO3 and hematite, which was formed by the oxidation of iron during mechanical activation and sintering in air. Magnetic properties of samples sintered at 1200 degrees C are superior to those sintered at 1100 degrees C, which can be attributed to higher Ba2Fe22.46O38Ti1.54 phase content. The position of the Curie temperature in 350-420 degrees C temperature region is consistent with 0.8:1 ratio of Ti to Ba. Maximum magnetization was observed for samples activated for 120 min. Dielectric properties of samples sintered at 1200 degrees C showed a dependence on frequency, with a significant drop in relative permittivity with an increase in frequency in the low-frequency region, and relatively constant values of relative permittivity in the high-frequency region. The tangent loss showed a decrease with increase in frequency, where peaks corresponding to the resonance of the electron hopping frequency with the external field were observed in the samples corresponding to the longer mechanical activation. Dielectric properties showed relatively small changes for samples activated longer than 150 min.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Influence of mechanical activation on functional properties of barium hexaferrite ceramics
EP  - 6672
IS  - 6
SP  - 6666
VL  - 44
DO  - 10.1016/j.ceramint.2018.01.078
ER  - 

@article{
author = "Kosanović, Darko and Blagojević, Vladimir A. and Maricić, A. and Aleksić, S. and Pavlović, Vera P. and Pavlović, Vladimir and Vlahović, Branislav",
year = "2018",
abstract = "Barium hexaferrite ceramics were prepared using mechanically activated mixtures of iron and barium titanate. The 60:40 mass% Fe:BaTiO3 powder mixtures were mechanically activated for different times (100-240 min) and sintered at 1100 and 1200 degrees C in order to determine the influence of mechanical activation of the precursor on the magnetic and dielectric properties of the resulting barium hexaferrite ceramics. The final product contained 84-89 mass% of Ba2Fe22.46O38Ti1.54 phase, with higher content corresponding to longer mechanical activation of the precursor. XRD and Raman measurements indicated that the remainder of the sample consists of leftover BaTiO3 and hematite, which was formed by the oxidation of iron during mechanical activation and sintering in air. Magnetic properties of samples sintered at 1200 degrees C are superior to those sintered at 1100 degrees C, which can be attributed to higher Ba2Fe22.46O38Ti1.54 phase content. The position of the Curie temperature in 350-420 degrees C temperature region is consistent with 0.8:1 ratio of Ti to Ba. Maximum magnetization was observed for samples activated for 120 min. Dielectric properties of samples sintered at 1200 degrees C showed a dependence on frequency, with a significant drop in relative permittivity with an increase in frequency in the low-frequency region, and relatively constant values of relative permittivity in the high-frequency region. The tangent loss showed a decrease with increase in frequency, where peaks corresponding to the resonance of the electron hopping frequency with the external field were observed in the samples corresponding to the longer mechanical activation. Dielectric properties showed relatively small changes for samples activated longer than 150 min.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Influence of mechanical activation on functional properties of barium hexaferrite ceramics",
pages = "6672-6666",
number = "6",
volume = "44",
doi = "10.1016/j.ceramint.2018.01.078"
}

Kosanović, D., Blagojević, V. A., Maricić, A., Aleksić, S., Pavlović, V. P., Pavlović, V.,& Vlahović, B.. (2018). Influence of mechanical activation on functional properties of barium hexaferrite ceramics. in Ceramics International
Elsevier Sci Ltd, Oxford., 44(6), 6666-6672.
https://doi.org/10.1016/j.ceramint.2018.01.078

Kosanović D, Blagojević VA, Maricić A, Aleksić S, Pavlović VP, Pavlović V, Vlahović B. Influence of mechanical activation on functional properties of barium hexaferrite ceramics. in Ceramics International. 2018;44(6):6666-6672.
doi:10.1016/j.ceramint.2018.01.078 .

Kosanović, Darko, Blagojević, Vladimir A., Maricić, A., Aleksić, S., Pavlović, Vera P., Pavlović, Vladimir, Vlahović, Branislav, "Influence of mechanical activation on functional properties of barium hexaferrite ceramics" in Ceramics International, 44, no. 6 (2018):6666-6672,
https://doi.org/10.1016/j.ceramint.2018.01.078 . .

TY  - JOUR
AU  - Petrović, Predrag B.
AU  - Pavlović, Vladimir
AU  - Vlahović, Branislav
AU  - Mijailović, Vladica
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4791
AB  - This paper introduces new electronic sensor circuits based on the usage of a piezoelectric Polyvinylidene fluoride-PVDF pressure detector coupled with a current-mode instrumentation amplifier, Schmitt comparator, and only grounded resistors. Pressure/force is measured in terms of the charge generated by the PVDF element as a result of the direct piezoelectric effect. The experimental test results demonstrated that the dynamic pressure response, the sensitivity and linearity of the designed sensor were higher than the sensitivity and linearity of a traditional piezoelectric sensor. The sensitivity of the PVDF sensor was 0.08 mV/Pa. The detector is calibrated over a frequency range of 1 Hz-1 kHz. The proposed signal conditioning electronics offer a potential for future miniaturization in order to be integrated with different commercial devices, for detecting certain tiny activities including finger movements, robotics and smart electronic devices.
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators A-Physical
T1  - A high-sensitive current-mode pressure/force detector based on piezoelectric polymer PVDF
EP  - 175
SP  - 165
VL  - 276
DO  - 10.1016/j.sna.2018.04.014
ER  - 

@article{
author = "Petrović, Predrag B. and Pavlović, Vladimir and Vlahović, Branislav and Mijailović, Vladica",
year = "2018",
abstract = "This paper introduces new electronic sensor circuits based on the usage of a piezoelectric Polyvinylidene fluoride-PVDF pressure detector coupled with a current-mode instrumentation amplifier, Schmitt comparator, and only grounded resistors. Pressure/force is measured in terms of the charge generated by the PVDF element as a result of the direct piezoelectric effect. The experimental test results demonstrated that the dynamic pressure response, the sensitivity and linearity of the designed sensor were higher than the sensitivity and linearity of a traditional piezoelectric sensor. The sensitivity of the PVDF sensor was 0.08 mV/Pa. The detector is calibrated over a frequency range of 1 Hz-1 kHz. The proposed signal conditioning electronics offer a potential for future miniaturization in order to be integrated with different commercial devices, for detecting certain tiny activities including finger movements, robotics and smart electronic devices.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators A-Physical",
title = "A high-sensitive current-mode pressure/force detector based on piezoelectric polymer PVDF",
pages = "175-165",
volume = "276",
doi = "10.1016/j.sna.2018.04.014"
}

Petrović, P. B., Pavlović, V., Vlahović, B.,& Mijailović, V.. (2018). A high-sensitive current-mode pressure/force detector based on piezoelectric polymer PVDF. in Sensors and Actuators A-Physical
Elsevier Science Sa, Lausanne., 276, 165-175.
https://doi.org/10.1016/j.sna.2018.04.014

Petrović PB, Pavlović V, Vlahović B, Mijailović V. A high-sensitive current-mode pressure/force detector based on piezoelectric polymer PVDF. in Sensors and Actuators A-Physical. 2018;276:165-175.
doi:10.1016/j.sna.2018.04.014 .

Petrović, Predrag B., Pavlović, Vladimir, Vlahović, Branislav, Mijailović, Vladica, "A high-sensitive current-mode pressure/force detector based on piezoelectric polymer PVDF" in Sensors and Actuators A-Physical, 276 (2018):165-175,
https://doi.org/10.1016/j.sna.2018.04.014 . .

TY  - JOUR
AU  - Kosanović, Darko
AU  - Obradović, N.
AU  - Pavlović, Vera P.
AU  - Marković, S.
AU  - Maricić, A.
AU  - Rasić, G.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir
AU  - Ristić, M.M.
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4010
AB  - Crystal structure and morphology of mechanically activated nanocrystalline Fe/BaTiO3 was investigated using a combination of spectroscopic and microscopic methods. These show that mechanical activation led to the creation of new surfaces and the comminution of the initial powder particles. Prolonged milling resulted in formation of larger agglomerates of BaTiO3 and bimodal particle size distribution, where BaTiO3 particles were significantly larger than those of iron-containing phases. Milling times of 210 min and above lead to a significant decrease in temperature of the oxidation of iron in the sample, indicating abrupt change in reactivity. Raman spectroscopy analysis has revealed that activation had a pronounced influence on Fe/BaTiO3 lattice, thereby affecting both the stability of the crystal structure and the phase transition phenomena.
PB  - Elsevier, Amsterdam
T2  - Materials Science and Engineering B-Advanced Functional Solid-State Materials
T1  - The influence of mechanical activation on the morphological changes of Fe/BaTiO3 powder
EP  - 95
SP  - 89
VL  - 212
DO  - 10.1016/j.mseb.2016.07.016
ER  - 

@article{
author = "Kosanović, Darko and Obradović, N. and Pavlović, Vera P. and Marković, S. and Maricić, A. and Rasić, G. and Vlahović, Branislav and Pavlović, Vladimir and Ristić, M.M.",
year = "2016",
abstract = "Crystal structure and morphology of mechanically activated nanocrystalline Fe/BaTiO3 was investigated using a combination of spectroscopic and microscopic methods. These show that mechanical activation led to the creation of new surfaces and the comminution of the initial powder particles. Prolonged milling resulted in formation of larger agglomerates of BaTiO3 and bimodal particle size distribution, where BaTiO3 particles were significantly larger than those of iron-containing phases. Milling times of 210 min and above lead to a significant decrease in temperature of the oxidation of iron in the sample, indicating abrupt change in reactivity. Raman spectroscopy analysis has revealed that activation had a pronounced influence on Fe/BaTiO3 lattice, thereby affecting both the stability of the crystal structure and the phase transition phenomena.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Science and Engineering B-Advanced Functional Solid-State Materials",
title = "The influence of mechanical activation on the morphological changes of Fe/BaTiO3 powder",
pages = "95-89",
volume = "212",
doi = "10.1016/j.mseb.2016.07.016"
}

Kosanović, D., Obradović, N., Pavlović, V. P., Marković, S., Maricić, A., Rasić, G., Vlahović, B., Pavlović, V.,& Ristić, M.M.. (2016). The influence of mechanical activation on the morphological changes of Fe/BaTiO3 powder. in Materials Science and Engineering B-Advanced Functional Solid-State Materials
Elsevier, Amsterdam., 212, 89-95.
https://doi.org/10.1016/j.mseb.2016.07.016

Kosanović D, Obradović N, Pavlović VP, Marković S, Maricić A, Rasić G, Vlahović B, Pavlović V, Ristić M. The influence of mechanical activation on the morphological changes of Fe/BaTiO3 powder. in Materials Science and Engineering B-Advanced Functional Solid-State Materials. 2016;212:89-95.
doi:10.1016/j.mseb.2016.07.016 .

Kosanović, Darko, Obradović, N., Pavlović, Vera P., Marković, S., Maricić, A., Rasić, G., Vlahović, Branislav, Pavlović, Vladimir, Ristić, M.M., "The influence of mechanical activation on the morphological changes of Fe/BaTiO3 powder" in Materials Science and Engineering B-Advanced Functional Solid-State Materials, 212 (2016):89-95,
https://doi.org/10.1016/j.mseb.2016.07.016 . .