TY  - JOUR
AU  - Stanković, Nadežda
AU  - Nikolić, Marko G.
AU  - Jelenković, Branislav
AU  - Daneu, Nina
AU  - Maletaškić, Jelena
AU  - Prekajski-Đorđević, Marija D.
AU  - Matović, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9009
AB  - In the last decade, an immense progress has been made in white LEDs, mainly due to the development of red-emitting phosphors. In this paper, we report on the synthesis of Eu3+ activated Y2MoO6 by a self-initiated and self-sustained method. The obtained powder was calcined at various temperatures in the 600–1400 °C range and examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). The results revealed that all powders are single phase Y2MoO6:Eu3+, with particle size in the nanorange at lower treatment temperatures (600 and 800 °C) and in the microrange at higher calcination temperatures (1000–1400 °C). The obtained powders are promising materials for white light-emitting diodes as they can efficiently absorb energy in 324–425 nm region (near-UV to blue light region) and emit at 611 nm in the red region of the spectrum, while exhibiting high thermal and chemical stability.
T2  - Processing and Application of Ceramics
T1  - Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures
VL  - 14
IS  - 1
SP  - 71
EP  - 76
DO  - 10.2298/PAC2001071S
ER  - 

@article{
author = "Stanković, Nadežda and Nikolić, Marko G. and Jelenković, Branislav and Daneu, Nina and Maletaškić, Jelena and Prekajski-Đorđević, Marija D. and Matović, Branko",
year = "2020",
abstract = "In the last decade, an immense progress has been made in white LEDs, mainly due to the development of red-emitting phosphors. In this paper, we report on the synthesis of Eu3+ activated Y2MoO6 by a self-initiated and self-sustained method. The obtained powder was calcined at various temperatures in the 600–1400 °C range and examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). The results revealed that all powders are single phase Y2MoO6:Eu3+, with particle size in the nanorange at lower treatment temperatures (600 and 800 °C) and in the microrange at higher calcination temperatures (1000–1400 °C). The obtained powders are promising materials for white light-emitting diodes as they can efficiently absorb energy in 324–425 nm region (near-UV to blue light region) and emit at 611 nm in the red region of the spectrum, while exhibiting high thermal and chemical stability.",
journal = "Processing and Application of Ceramics",
title = "Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures",
volume = "14",
number = "1",
pages = "71-76",
doi = "10.2298/PAC2001071S"
}

Stanković, N., Nikolić, M. G., Jelenković, B., Daneu, N., Maletaškić, J., Prekajski-Đorđević, M. D.,& Matović, B.. (2020). Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures. in Processing and Application of Ceramics, 14(1), 71-76.
https://doi.org/10.2298/PAC2001071S

Stanković N, Nikolić MG, Jelenković B, Daneu N, Maletaškić J, Prekajski-Đorđević MD, Matović B. Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures. in Processing and Application of Ceramics. 2020;14(1):71-76.
doi:10.2298/PAC2001071S .

Stanković, Nadežda, Nikolić, Marko G., Jelenković, Branislav, Daneu, Nina, Maletaškić, Jelena, Prekajski-Đorđević, Marija D., Matović, Branko, "Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures" in Processing and Application of Ceramics, 14, no. 1 (2020):71-76,
https://doi.org/10.2298/PAC2001071S . .

TY  - JOUR
AU  - Maletaškić, Jelena
AU  - Stanković, Nadežda
AU  - Daneu, Nina
AU  - Babić, Biljana M.
AU  - Stoiljković, Milovan
AU  - Yoshida, Katsumi
AU  - Matović, Branko
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7663
AB  - Nanofibrous silica with a high surface area was produced from chrysotile by the acid-leaching method. Natural mineral chrysotile asbestos from Stragari, Korlace in Serbia was used as the starting material. The fibers were modified by chemical treatment with 1 M HCl and the mineral dissolution was monitored by transmission electron microscopy, X-ray powder diffraction, inductively coupled plasma spectrometry and low-temperature nitrogen adsorption techniques to highlight the effects of the leaching process. The results showed that the applied concentration of acid solution and processing time of 4 h were sufficient to effectively remove the magnesium hydroxide layer and transform the crystal structure of the hazardous starting chrysotile to porous SiO2 nanofibers. With prolonged acid leaching, the specific surface area, S (BET), calculated by BET equation, was increased from 147 up to 435 m(2) g(- 1), with micropores representing a significant part of the specific surface.
T2  - Physics and Chemistry of Minerals
T1  - Acid leaching of natural chrysotile asbestos to mesoporous silica fibers
VL  - 45
IS  - 4
SP  - 343
EP  - 351
DO  - 10.1007/s00269-017-0924-z
ER  - 

@article{
author = "Maletaškić, Jelena and Stanković, Nadežda and Daneu, Nina and Babić, Biljana M. and Stoiljković, Milovan and Yoshida, Katsumi and Matović, Branko",
year = "2018",
abstract = "Nanofibrous silica with a high surface area was produced from chrysotile by the acid-leaching method. Natural mineral chrysotile asbestos from Stragari, Korlace in Serbia was used as the starting material. The fibers were modified by chemical treatment with 1 M HCl and the mineral dissolution was monitored by transmission electron microscopy, X-ray powder diffraction, inductively coupled plasma spectrometry and low-temperature nitrogen adsorption techniques to highlight the effects of the leaching process. The results showed that the applied concentration of acid solution and processing time of 4 h were sufficient to effectively remove the magnesium hydroxide layer and transform the crystal structure of the hazardous starting chrysotile to porous SiO2 nanofibers. With prolonged acid leaching, the specific surface area, S (BET), calculated by BET equation, was increased from 147 up to 435 m(2) g(- 1), with micropores representing a significant part of the specific surface.",
journal = "Physics and Chemistry of Minerals",
title = "Acid leaching of natural chrysotile asbestos to mesoporous silica fibers",
volume = "45",
number = "4",
pages = "343-351",
doi = "10.1007/s00269-017-0924-z"
}

Maletaškić, J., Stanković, N., Daneu, N., Babić, B. M., Stoiljković, M., Yoshida, K.,& Matović, B.. (2018). Acid leaching of natural chrysotile asbestos to mesoporous silica fibers. in Physics and Chemistry of Minerals, 45(4), 343-351.
https://doi.org/10.1007/s00269-017-0924-z

Maletaškić J, Stanković N, Daneu N, Babić BM, Stoiljković M, Yoshida K, Matović B. Acid leaching of natural chrysotile asbestos to mesoporous silica fibers. in Physics and Chemistry of Minerals. 2018;45(4):343-351.
doi:10.1007/s00269-017-0924-z .

Maletaškić, Jelena, Stanković, Nadežda, Daneu, Nina, Babić, Biljana M., Stoiljković, Milovan, Yoshida, Katsumi, Matović, Branko, "Acid leaching of natural chrysotile asbestos to mesoporous silica fibers" in Physics and Chemistry of Minerals, 45, no. 4 (2018):343-351,
https://doi.org/10.1007/s00269-017-0924-z . .

TY  - JOUR
AU  - Matović, Branko
AU  - Bučevac, Dušan
AU  - Urbanović, Vladimir
AU  - Stanković, Nadežda
AU  - Daneu, Nina
AU  - Volkov-Husović, Tatjana
AU  - Babić, Biljana M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1134
AB  - Additive-free beta-SiC nanopowders were densified by using high-pressure anvil-type with hollows apparatus at the pressure of 4 GPa in the range of 1500-1900 degrees C. The starting powder with average particle size of 10 nm was synthesized by a sol-gel process. Crystallite size and lattice parameters of the samples have been studied at room temperature by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was found that the size of the crystallites gradually increases from 16 to 51 nm with increasing sintering temperature (1500 to 1900 degrees C). Fully densified sample ( GT 99%) was obtained at a sintering temperature of 1900 degrees C for 60 s. This sample exhibits nano-hardness and Youngs modulus of elasticity of 35 GPa and 450 GPa, respectively. Modified vibratory cavitation test method was used for laboratory testing of the cavitation resistance. A very low erosion level with mass loss 0.1% after 10 h was exhibited during the cavitation test. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Journal of the European Ceramic Society
T1  - Monolithic nanocrystalline SiC ceramics
VL  - 36
IS  - 12
SP  - 3005
EP  - 3010
DO  - 10.1016/j.jeurceramsoc.2015.10.031
ER  - 

@article{
author = "Matović, Branko and Bučevac, Dušan and Urbanović, Vladimir and Stanković, Nadežda and Daneu, Nina and Volkov-Husović, Tatjana and Babić, Biljana M.",
year = "2016",
abstract = "Additive-free beta-SiC nanopowders were densified by using high-pressure anvil-type with hollows apparatus at the pressure of 4 GPa in the range of 1500-1900 degrees C. The starting powder with average particle size of 10 nm was synthesized by a sol-gel process. Crystallite size and lattice parameters of the samples have been studied at room temperature by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was found that the size of the crystallites gradually increases from 16 to 51 nm with increasing sintering temperature (1500 to 1900 degrees C). Fully densified sample ( GT 99%) was obtained at a sintering temperature of 1900 degrees C for 60 s. This sample exhibits nano-hardness and Youngs modulus of elasticity of 35 GPa and 450 GPa, respectively. Modified vibratory cavitation test method was used for laboratory testing of the cavitation resistance. A very low erosion level with mass loss 0.1% after 10 h was exhibited during the cavitation test. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Journal of the European Ceramic Society",
title = "Monolithic nanocrystalline SiC ceramics",
volume = "36",
number = "12",
pages = "3005-3010",
doi = "10.1016/j.jeurceramsoc.2015.10.031"
}

Matović, B., Bučevac, D., Urbanović, V., Stanković, N., Daneu, N., Volkov-Husović, T.,& Babić, B. M.. (2016). Monolithic nanocrystalline SiC ceramics. in Journal of the European Ceramic Society, 36(12), 3005-3010.
https://doi.org/10.1016/j.jeurceramsoc.2015.10.031

Matović B, Bučevac D, Urbanović V, Stanković N, Daneu N, Volkov-Husović T, Babić BM. Monolithic nanocrystalline SiC ceramics. in Journal of the European Ceramic Society. 2016;36(12):3005-3010.
doi:10.1016/j.jeurceramsoc.2015.10.031 .

Matović, Branko, Bučevac, Dušan, Urbanović, Vladimir, Stanković, Nadežda, Daneu, Nina, Volkov-Husović, Tatjana, Babić, Biljana M., "Monolithic nanocrystalline SiC ceramics" in Journal of the European Ceramic Society, 36, no. 12 (2016):3005-3010,
https://doi.org/10.1016/j.jeurceramsoc.2015.10.031 . .

TY  - JOUR
AU  - Matović, Branko
AU  - Živić, Fatima
AU  - Mitrovic, Slobodan
AU  - Pršić, Dragan H.
AU  - Maksimović, Vesna
AU  - Volkov-Husović, Tatjana
AU  - Kumar, Ravi
AU  - Daneu, Nina
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/864
AB  - Cubic SiC nano-powder particles were synthesized by a sal-gel process with an average grains size of 9.5 nm which were subsequently densified by using a high-pressure anvil-type with hollows apparatus at a pressure of 4 GPa in order to obtain nanostructured bulk ceramic compacts. The density obtained was GT 98% at a sintering temperature of 1500 degrees C with a holding time of only 60s. The calculation of the average crystallite size (D) was performed on the basis of the full width at half maximum intensity (FWHM) of the XRD peaks. Williamson-Hall plots were used to separate the effect of the size and strain in the nanostructured SiC compacts. Sintered nanostructured SiC ceramic exhibits hardness and elastic modulus of 32-420 GPa respectively. Wear properties were investigated and the average value of dynamic friction coefficient obtained was 0.16. (C) 2015 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Materials Letters
T1  - Ultra-high pressure densification and properties of nanostructured SiC
VL  - 164
SP  - 68
EP  - 71
DO  - 10.1016/j.matlet.2015.09.043
ER  - 

@article{
author = "Matović, Branko and Živić, Fatima and Mitrovic, Slobodan and Pršić, Dragan H. and Maksimović, Vesna and Volkov-Husović, Tatjana and Kumar, Ravi and Daneu, Nina",
year = "2016",
abstract = "Cubic SiC nano-powder particles were synthesized by a sal-gel process with an average grains size of 9.5 nm which were subsequently densified by using a high-pressure anvil-type with hollows apparatus at a pressure of 4 GPa in order to obtain nanostructured bulk ceramic compacts. The density obtained was GT 98% at a sintering temperature of 1500 degrees C with a holding time of only 60s. The calculation of the average crystallite size (D) was performed on the basis of the full width at half maximum intensity (FWHM) of the XRD peaks. Williamson-Hall plots were used to separate the effect of the size and strain in the nanostructured SiC compacts. Sintered nanostructured SiC ceramic exhibits hardness and elastic modulus of 32-420 GPa respectively. Wear properties were investigated and the average value of dynamic friction coefficient obtained was 0.16. (C) 2015 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Ultra-high pressure densification and properties of nanostructured SiC",
volume = "164",
pages = "68-71",
doi = "10.1016/j.matlet.2015.09.043"
}

Matović, B., Živić, F., Mitrovic, S., Pršić, D. H., Maksimović, V., Volkov-Husović, T., Kumar, R.,& Daneu, N.. (2016). Ultra-high pressure densification and properties of nanostructured SiC. in Materials Letters
Elsevier., 164, 68-71.
https://doi.org/10.1016/j.matlet.2015.09.043

Matović B, Živić F, Mitrovic S, Pršić DH, Maksimović V, Volkov-Husović T, Kumar R, Daneu N. Ultra-high pressure densification and properties of nanostructured SiC. in Materials Letters. 2016;164:68-71.
doi:10.1016/j.matlet.2015.09.043 .

Matović, Branko, Živić, Fatima, Mitrovic, Slobodan, Pršić, Dragan H., Maksimović, Vesna, Volkov-Husović, Tatjana, Kumar, Ravi, Daneu, Nina, "Ultra-high pressure densification and properties of nanostructured SiC" in Materials Letters, 164 (2016):68-71,
https://doi.org/10.1016/j.matlet.2015.09.043 . .

TY  - JOUR
AU  - Lazarević, Zorica Ž.
AU  - Milutinovic, Aleksandra N.
AU  - Jovalekić, Čedomir
AU  - Ivanovski, Valentin N.
AU  - Daneu, Nina
AU  - Mađarević, Ivan
AU  - Romčević, Nebojša Ž.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/386
AB  - Nano crystalline samples of nickel zinc ferrite, Ni0.5Zn0.5Fe2O4 were prepared by mechanochemical route in a planetary ball mill starting from two mixtures of the appropriate quantities of the powders: case (1) oxide powders: NiO, ZnO and alpha-Fe2O3 in one case, and in the second case (2) hydroxide powders: Ni(OH)(2), Zn(OH)(2) and Fe(OH)(3). In order to monitor the progress of chemical reaction and confirm phase formation, powder samples obtained after 5 h and 10 h of milling were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman, IR and Mossbauer spectroscopy. It is shown that the soft mechanochemical method, i.e. mechanochemical activation of hydroxides, produces high quality single phase Ni0.5Zn0.5Fe2O4 samples in much more efficient way. From the IR spectroscopy of single phase samples it is obvious that energy of modes depends on the ratio of cations. The deconvolution of Raman spectra allows to separate contributions of different cations to a particular type of vibration and to estimate the degree of inversion. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - Spectroscopy investigation of nanostructured nickel-zinc ferrite obtained by mechanochemical synthesis
VL  - 63
SP  - 239
EP  - 247
DO  - 10.1016/j.materresbull.2014.12.005
ER  - 

@article{
author = "Lazarević, Zorica Ž. and Milutinovic, Aleksandra N. and Jovalekić, Čedomir and Ivanovski, Valentin N. and Daneu, Nina and Mađarević, Ivan and Romčević, Nebojša Ž.",
year = "2015",
abstract = "Nano crystalline samples of nickel zinc ferrite, Ni0.5Zn0.5Fe2O4 were prepared by mechanochemical route in a planetary ball mill starting from two mixtures of the appropriate quantities of the powders: case (1) oxide powders: NiO, ZnO and alpha-Fe2O3 in one case, and in the second case (2) hydroxide powders: Ni(OH)(2), Zn(OH)(2) and Fe(OH)(3). In order to monitor the progress of chemical reaction and confirm phase formation, powder samples obtained after 5 h and 10 h of milling were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman, IR and Mossbauer spectroscopy. It is shown that the soft mechanochemical method, i.e. mechanochemical activation of hydroxides, produces high quality single phase Ni0.5Zn0.5Fe2O4 samples in much more efficient way. From the IR spectroscopy of single phase samples it is obvious that energy of modes depends on the ratio of cations. The deconvolution of Raman spectra allows to separate contributions of different cations to a particular type of vibration and to estimate the degree of inversion. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "Spectroscopy investigation of nanostructured nickel-zinc ferrite obtained by mechanochemical synthesis",
volume = "63",
pages = "239-247",
doi = "10.1016/j.materresbull.2014.12.005"
}

Lazarević, Z. Ž., Milutinovic, A. N., Jovalekić, Č., Ivanovski, V. N., Daneu, N., Mađarević, I.,& Romčević, N. Ž.. (2015). Spectroscopy investigation of nanostructured nickel-zinc ferrite obtained by mechanochemical synthesis. in Materials Research Bulletin, 63, 239-247.
https://doi.org/10.1016/j.materresbull.2014.12.005

Lazarević ZŽ, Milutinovic AN, Jovalekić Č, Ivanovski VN, Daneu N, Mađarević I, Romčević NŽ. Spectroscopy investigation of nanostructured nickel-zinc ferrite obtained by mechanochemical synthesis. in Materials Research Bulletin. 2015;63:239-247.
doi:10.1016/j.materresbull.2014.12.005 .

Lazarević, Zorica Ž., Milutinovic, Aleksandra N., Jovalekić, Čedomir, Ivanovski, Valentin N., Daneu, Nina, Mađarević, Ivan, Romčević, Nebojša Ž., "Spectroscopy investigation of nanostructured nickel-zinc ferrite obtained by mechanochemical synthesis" in Materials Research Bulletin, 63 (2015):239-247,
https://doi.org/10.1016/j.materresbull.2014.12.005 . .