Vranješ, Mila

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Authority KeyName Variants
orcid::0000-0001-6862-7473
  • Vranješ, Mila (23)
Projects
Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion
Mechanistic studies of the reactions of transition metal ion complexes with biologically relevant molecules Effects of laser radiation and plasma on novel materials in their synthesis, modification, and analysis
Studying climate change and its influence on environment: impacts, adaptation and mitigation Nanostructured multifunctional materials and nanocomposites
Development of technologies and products based on mineral raw materials and waste biomass for protection of natural resources for safe food production MPNS COST Action [MP1106]
bilateral German-Serbian project - German Academic Exchange Office (Deutscher Akademischer Austauschdienst, DAAD) Bilateral project Republic of Serbia-People's Republic of China [451-00-478/2018-09/16]
COST Action [CM 1101] COST Action [MP1106]
Danube Region Strategies multilateral project -Danube meets Omics [DS 052] Development of Methods of Monitoring and Removal of Biologically Actives Substances Aimed at Improving the Quality of the Environment
Micromechanical criteria of damage and fracture Biomarkers in neurodegenerative and malignant processes
Cellular and molecular basis of malignant and cardiovascular diseases-clinical implications Photonics of micro and nano structured materials
Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine Sinteza i karakterizacija nanočestica i nanokompozita
Development of technological processes for obtaining of ecological materials based on nonmetallic minerals Strategic Research Theme, University Development Fund, Grant HKU and RGC GRF [HKU 701910], Guangdong Science and Technology Development Plan [2010A090602002], Shenzhen Science and Technology Commission [JCYJ20120830154526542], National Science Fund of China [21403103]
U.S. National Aeronautics and Space Administration South Dakota EPSCoR Space Grant Consortium

Author's Bibliography

Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer

Matijević, Milica; Nakarada, Đura; Liang, Xinyue; Korićanac, Lela; Rajsiglova, Lenka; Vannucci, Luca; Nešić, Maja D.; Vranješ, Mila; Mojović, Miloš D.; Mi, Lan; Estrela-Lopis, Irina; Böttner, Julia; Šaponjić, Zoran; Petković, Marijana; Stepić, Milutin

(2020)

TY  - JOUR
AU  - Matijević, Milica
AU  - Nakarada, Đura
AU  - Liang, Xinyue
AU  - Korićanac, Lela
AU  - Rajsiglova, Lenka
AU  - Vannucci, Luca
AU  - Nešić, Maja D.
AU  - Vranješ, Mila
AU  - Mojović, Miloš D.
AU  - Mi, Lan
AU  - Estrela-Lopis, Irina
AU  - Böttner, Julia
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
AU  - Stepić, Milutin
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9058
AB  - TiO2 prolatenanospheroids (PNSs) may be photosensitizers (PSs), which act by catalyzation of hydroxyl radical (∙OH) formation upon light illumination. ∙OH might, in turn, contribute to killing of cancer cells. On the other hand, there is great concern about toxicity in the dark of TiO2 nanoparticles in general. In this work, we have investigated the biocompatibility of TiO2 PNSs of the anatase crystal form (length between 100 and 300 nm and width 50 nm) in the dark with immune cells and light-induced cytotoxicity on several cancer cell lines. The effects of the treatment of different cell lines with several concentrations of TiO2 PNSs suspensions showed the specifics of cells’ viability and the intracellular localization. The results of in vitro studies obtained by cytotoxicity assays adjusted to individual cell lines’ metabolism point towards the biocompatibility of TiO2 PNSs at low and moderate concentrations in the dark, which neither kill the cells, nor induce activation of the immune system cells. Laser scanning confocal microscopy revealed that PNSs are taken up by cells, and insight into the intracellular distribution was obtained in this study.
T2  - Journal of Nanoparticle Research
T1  - Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer
VL  - 22
IS  - 7
SP  - 175
DO  - 10.1007/s11051-020-04899-3
ER  - 
@article{
author = "Matijević, Milica and Nakarada, Đura and Liang, Xinyue and Korićanac, Lela and Rajsiglova, Lenka and Vannucci, Luca and Nešić, Maja D. and Vranješ, Mila and Mojović, Miloš D. and Mi, Lan and Estrela-Lopis, Irina and Böttner, Julia and Šaponjić, Zoran and Petković, Marijana and Stepić, Milutin",
year = "2020",
abstract = "TiO2 prolatenanospheroids (PNSs) may be photosensitizers (PSs), which act by catalyzation of hydroxyl radical (∙OH) formation upon light illumination. ∙OH might, in turn, contribute to killing of cancer cells. On the other hand, there is great concern about toxicity in the dark of TiO2 nanoparticles in general. In this work, we have investigated the biocompatibility of TiO2 PNSs of the anatase crystal form (length between 100 and 300 nm and width 50 nm) in the dark with immune cells and light-induced cytotoxicity on several cancer cell lines. The effects of the treatment of different cell lines with several concentrations of TiO2 PNSs suspensions showed the specifics of cells’ viability and the intracellular localization. The results of in vitro studies obtained by cytotoxicity assays adjusted to individual cell lines’ metabolism point towards the biocompatibility of TiO2 PNSs at low and moderate concentrations in the dark, which neither kill the cells, nor induce activation of the immune system cells. Laser scanning confocal microscopy revealed that PNSs are taken up by cells, and insight into the intracellular distribution was obtained in this study.",
journal = "Journal of Nanoparticle Research",
title = "Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer",
volume = "22",
number = "7",
pages = "175",
doi = "10.1007/s11051-020-04899-3"
}
Matijević, M., Nakarada, Đ., Liang, X., Korićanac, L., Rajsiglova, L., Vannucci, L., Nešić, M. D., Vranješ, M., Mojović, M. D., Mi, L., Estrela-Lopis, I., Böttner, J., Šaponjić, Z., Petković, M.,& Stepić, M.. (2020). Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer. in Journal of Nanoparticle Research, 22(7), 175.
https://doi.org/10.1007/s11051-020-04899-3
Matijević M, Nakarada Đ, Liang X, Korićanac L, Rajsiglova L, Vannucci L, Nešić MD, Vranješ M, Mojović MD, Mi L, Estrela-Lopis I, Böttner J, Šaponjić Z, Petković M, Stepić M. Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer. in Journal of Nanoparticle Research. 2020;22(7):175.
doi:10.1007/s11051-020-04899-3 .
Matijević, Milica, Nakarada, Đura, Liang, Xinyue, Korićanac, Lela, Rajsiglova, Lenka, Vannucci, Luca, Nešić, Maja D., Vranješ, Mila, Mojović, Miloš D., Mi, Lan, Estrela-Lopis, Irina, Böttner, Julia, Šaponjić, Zoran, Petković, Marijana, Stepić, Milutin, "Biocompatibility of TiO2 prolate nanospheroids as a potential photosenzitizer in therapy of cancer" in Journal of Nanoparticle Research, 22, no. 7 (2020):175,
https://doi.org/10.1007/s11051-020-04899-3 . .
1
1
1

Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Milošević, Milica V.; Ćirić-Marjanović, Gordana N.; Stoiljković, Milovan; Konstantinović, Zorica; Pavlović, Vladimir B.; Milivojević, Dušan; Šaponjić, Zoran

(2019)

TY  - JOUR
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Milošević, Milica V.
AU  - Ćirić-Marjanović, Gordana N.
AU  - Stoiljković, Milovan
AU  - Konstantinović, Zorica
AU  - Pavlović, Vladimir B.
AU  - Milivojević, Dušan
AU  - Šaponjić, Zoran
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S1293255818312226
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8358
AB  - Hydrothermal synthesis of Mn2+ doped titanate nanotubes (TNTs), which exhibited room temperature ferromagnetism (RTFM), is reported. Dispersions of 1 and 5 at.% Mn2+ doped anatase TiO2 nanocrystals were used as precursors. Size and shape of Mn2+ doped TNTs and precursor nanocrystals were studied by transmission electron microscopy (TEM). The relatively uniform size distribution of transverse dimension of nanotubes of about 10 nm was observed while their lengths varied up to few hundred nanometers. The X-Ray Diffraction (XRD) analysis and Raman spectroscopy of resultant powder confirmed the hydrogen dititanate (H2Ti2O5 x H2O) crystal phase of Mn2+ doped TNTs with the presence of small amount of sodium titanates. Electron paramagnetic resonance (EPR) experiments were performed to probe the local atomic and electronic structure of Mn in the nanotubes. Room temperature ferromagnetic ordering with saturation magnetic moment (Ms) in the range of 0.6–1.5 μB per Mn atom was observed. © 2019 Elsevier Masson SAS
T2  - Solid State Sciences
T1  - Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior
VL  - 94
SP  - 155
EP  - 161
DO  - 10.1016/j.solidstatesciences.2019.06.008
ER  - 
@article{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Milošević, Milica V. and Ćirić-Marjanović, Gordana N. and Stoiljković, Milovan and Konstantinović, Zorica and Pavlović, Vladimir B. and Milivojević, Dušan and Šaponjić, Zoran",
year = "2019",
abstract = "Hydrothermal synthesis of Mn2+ doped titanate nanotubes (TNTs), which exhibited room temperature ferromagnetism (RTFM), is reported. Dispersions of 1 and 5 at.% Mn2+ doped anatase TiO2 nanocrystals were used as precursors. Size and shape of Mn2+ doped TNTs and precursor nanocrystals were studied by transmission electron microscopy (TEM). The relatively uniform size distribution of transverse dimension of nanotubes of about 10 nm was observed while their lengths varied up to few hundred nanometers. The X-Ray Diffraction (XRD) analysis and Raman spectroscopy of resultant powder confirmed the hydrogen dititanate (H2Ti2O5 x H2O) crystal phase of Mn2+ doped TNTs with the presence of small amount of sodium titanates. Electron paramagnetic resonance (EPR) experiments were performed to probe the local atomic and electronic structure of Mn in the nanotubes. Room temperature ferromagnetic ordering with saturation magnetic moment (Ms) in the range of 0.6–1.5 μB per Mn atom was observed. © 2019 Elsevier Masson SAS",
journal = "Solid State Sciences",
title = "Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior",
volume = "94",
pages = "155-161",
doi = "10.1016/j.solidstatesciences.2019.06.008"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Milošević, M. V., Ćirić-Marjanović, G. N., Stoiljković, M., Konstantinović, Z., Pavlović, V. B., Milivojević, D.,& Šaponjić, Z.. (2019). Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior. in Solid State Sciences, 94, 155-161.
https://doi.org/10.1016/j.solidstatesciences.2019.06.008
Vranješ M, Kuljanin-Jakovljević JŽ, Milošević MV, Ćirić-Marjanović GN, Stoiljković M, Konstantinović Z, Pavlović VB, Milivojević D, Šaponjić Z. Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior. in Solid State Sciences. 2019;94:155-161.
doi:10.1016/j.solidstatesciences.2019.06.008 .
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Milošević, Milica V., Ćirić-Marjanović, Gordana N., Stoiljković, Milovan, Konstantinović, Zorica, Pavlović, Vladimir B., Milivojević, Dušan, Šaponjić, Zoran, "Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior" in Solid State Sciences, 94 (2019):155-161,
https://doi.org/10.1016/j.solidstatesciences.2019.06.008 . .
6
5
6

Determination of the activity concentration of 137Cs and 40K in blueberry-based products consumed in Serbia

Vranješ, Borjana; Andrić, Velibor; Vranješ, Mila; Ajtić, Jelena; Mitrović, Branislava M.

(RAD Association, 2019)

TY  - CONF
AU  - Vranješ, Borjana
AU  - Andrić, Velibor
AU  - Vranješ, Mila
AU  - Ajtić, Jelena
AU  - Mitrović, Branislava M.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8458
AB  - The aim of the study is the investigation of the activity concentration of 137Cs and 40K in blueberry-based products that are available on the market in the Republic of Serbia. Samples were bought in stores during September 2017 and in total, ten packaged juices, two jams, two sweets and a fresh wild blueberry were measured. The activity concentrations of 137Cs in blueberry-based juices, jams and sweets varied from <MDA to 4.1 Bq/kg, <MDA to 21 Bq/kg and 0.6 Bq/kg to 28 Bq/kg, respectively. The average activity concentration of 137Cs in fresh wild blueberry was 4.1 Bq/kg. In Serbia, the recommended activity concentration of 137Cs in juices and sweets is 15 Bq/kg and 150 Bq/kg in fresh blueberries. The tested samples of juices, jams, fresh wild blueberry and one of the sweets meet the set criteria for 137Cs while one sweets sample exceeds the limit. The activity concentrations of 40K in juices, jams and sweets varied from 3.5 to 55 Bq/kg, 13.9 to 19.2 Bq/kg and 17.2 to 227 Bq/kg, respectively. The average activity concentration of 40K in fresh wild blueberry was 32 Bq/kg. With the obtained result the annual effective dose equivalent due to ingestion of blueberry-based products for adults was calculated, and for 137Cs in blueberry-based juices, jams, sweets and fresh wild blueberry varied from 0.2 to 2.5 Sv, 2.8 Sv, 0.4 to 17.0 Sv and 2.5 Sv, respectively. The annual effective dose equivalent for 40K in blueberry-based juices, jams, sweets and fresh wild blueberry varied from 1.0 to 16.0 Sv, 1.2 Sv, 5.0 to 66.0 Sv, and 9.3 Sv, respectively. © 2019 RAD Association. All rights reserved.
PB  - RAD Association
C3  - RAD Conference Proceedings
T1  - Determination of the activity concentration of 137Cs and 40K in blueberry-based products consumed in Serbia
VL  - 3
SP  - 85
EP  - 88
DO  - 10.21175/RadProc.2018.18
ER  - 
@conference{
author = "Vranješ, Borjana and Andrić, Velibor and Vranješ, Mila and Ajtić, Jelena and Mitrović, Branislava M.",
year = "2019",
abstract = "The aim of the study is the investigation of the activity concentration of 137Cs and 40K in blueberry-based products that are available on the market in the Republic of Serbia. Samples were bought in stores during September 2017 and in total, ten packaged juices, two jams, two sweets and a fresh wild blueberry were measured. The activity concentrations of 137Cs in blueberry-based juices, jams and sweets varied from <MDA to 4.1 Bq/kg, <MDA to 21 Bq/kg and 0.6 Bq/kg to 28 Bq/kg, respectively. The average activity concentration of 137Cs in fresh wild blueberry was 4.1 Bq/kg. In Serbia, the recommended activity concentration of 137Cs in juices and sweets is 15 Bq/kg and 150 Bq/kg in fresh blueberries. The tested samples of juices, jams, fresh wild blueberry and one of the sweets meet the set criteria for 137Cs while one sweets sample exceeds the limit. The activity concentrations of 40K in juices, jams and sweets varied from 3.5 to 55 Bq/kg, 13.9 to 19.2 Bq/kg and 17.2 to 227 Bq/kg, respectively. The average activity concentration of 40K in fresh wild blueberry was 32 Bq/kg. With the obtained result the annual effective dose equivalent due to ingestion of blueberry-based products for adults was calculated, and for 137Cs in blueberry-based juices, jams, sweets and fresh wild blueberry varied from 0.2 to 2.5 Sv, 2.8 Sv, 0.4 to 17.0 Sv and 2.5 Sv, respectively. The annual effective dose equivalent for 40K in blueberry-based juices, jams, sweets and fresh wild blueberry varied from 1.0 to 16.0 Sv, 1.2 Sv, 5.0 to 66.0 Sv, and 9.3 Sv, respectively. © 2019 RAD Association. All rights reserved.",
publisher = "RAD Association",
journal = "RAD Conference Proceedings",
title = "Determination of the activity concentration of 137Cs and 40K in blueberry-based products consumed in Serbia",
volume = "3",
pages = "85-88",
doi = "10.21175/RadProc.2018.18"
}
Vranješ, B., Andrić, V., Vranješ, M., Ajtić, J.,& Mitrović, B. M.. (2019). Determination of the activity concentration of 137Cs and 40K in blueberry-based products consumed in Serbia. in RAD Conference Proceedings
RAD Association., 3, 85-88.
https://doi.org/10.21175/RadProc.2018.18
Vranješ B, Andrić V, Vranješ M, Ajtić J, Mitrović BM. Determination of the activity concentration of 137Cs and 40K in blueberry-based products consumed in Serbia. in RAD Conference Proceedings. 2019;3:85-88.
doi:10.21175/RadProc.2018.18 .
Vranješ, Borjana, Andrić, Velibor, Vranješ, Mila, Ajtić, Jelena, Mitrović, Branislava M., "Determination of the activity concentration of 137Cs and 40K in blueberry-based products consumed in Serbia" in RAD Conference Proceedings, 3 (2019):85-88,
https://doi.org/10.21175/RadProc.2018.18 . .

TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma

Pavkov, Vladimir; Stoiljković, Milovan; Maksimović, Vesna; Cvijović-Alagić, Ivana; Ciganović, Jovan; Vranješ, Mila

(Belgrade : Serbian Academy of Sciences and Arts, 2018)

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Stoiljković, Milovan
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Ciganović, Jovan
AU  - Vranješ, Mila
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8739
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma
SP  - 222
EP  - 224
ER  - 
@conference{
author = "Pavkov, Vladimir and Stoiljković, Milovan and Maksimović, Vesna and Cvijović-Alagić, Ivana and Ciganović, Jovan and Vranješ, Mila",
year = "2018",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma",
pages = "222-224"
}
Pavkov, V., Stoiljković, M., Maksimović, V., Cvijović-Alagić, I., Ciganović, J.,& Vranješ, M.. (2018). TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 222-224.
Pavkov V, Stoiljković M, Maksimović V, Cvijović-Alagić I, Ciganović J, Vranješ M. TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:222-224..
Pavkov, Vladimir, Stoiljković, Milovan, Maksimović, Vesna, Cvijović-Alagić, Ivana, Ciganović, Jovan, Vranješ, Mila, "TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):222-224.

Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Konstantinović, Zorica; Pomar, Alberto; Stoiljković, Milovan; Mitrić, Miodrag; Radetic, Tamara; Šaponjić, Zoran

(2017)

TY  - JOUR
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Konstantinović, Zorica
AU  - Pomar, Alberto
AU  - Stoiljković, Milovan
AU  - Mitrić, Miodrag
AU  - Radetic, Tamara
AU  - Šaponjić, Zoran
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1792
AB  - Co2+ doped TiO2 nanocrystals were synthetized by a hydrothermal treatment procedure applied to precursor dispersion of titania nanotubes and Co2+ ions. Mixture of polygonal and prolate spheroid-like nanocrystals was obtained. The results of X-ray diffraction (XRD) analysis showed that resulted nanocrystals retain anatase crystal phase for both dopant concentrations (1.69 and 2.5 at%), but the crystal lattice parameters were affected. Reflection spectra revealed altered optical properties compared to bare TiO2. Room temperature ferromagnetic ordering with saturation magnetic moment in the range of 0.001-0.002 mu (B)/Co was observed for both measured films made of Co2+ doped TiO2 nanocrystals.
T2  - Journal of Advanced Ceramics
T1  - Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior
VL  - 6
IS  - 3
SP  - 220
EP  - 229
DO  - 10.1007/s40145-017-0233-5
ER  - 
@article{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Konstantinović, Zorica and Pomar, Alberto and Stoiljković, Milovan and Mitrić, Miodrag and Radetic, Tamara and Šaponjić, Zoran",
year = "2017",
abstract = "Co2+ doped TiO2 nanocrystals were synthetized by a hydrothermal treatment procedure applied to precursor dispersion of titania nanotubes and Co2+ ions. Mixture of polygonal and prolate spheroid-like nanocrystals was obtained. The results of X-ray diffraction (XRD) analysis showed that resulted nanocrystals retain anatase crystal phase for both dopant concentrations (1.69 and 2.5 at%), but the crystal lattice parameters were affected. Reflection spectra revealed altered optical properties compared to bare TiO2. Room temperature ferromagnetic ordering with saturation magnetic moment in the range of 0.001-0.002 mu (B)/Co was observed for both measured films made of Co2+ doped TiO2 nanocrystals.",
journal = "Journal of Advanced Ceramics",
title = "Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior",
volume = "6",
number = "3",
pages = "220-229",
doi = "10.1007/s40145-017-0233-5"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Konstantinović, Z., Pomar, A., Stoiljković, M., Mitrić, M., Radetic, T.,& Šaponjić, Z.. (2017). Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior. in Journal of Advanced Ceramics, 6(3), 220-229.
https://doi.org/10.1007/s40145-017-0233-5
Vranješ M, Kuljanin-Jakovljević JŽ, Konstantinović Z, Pomar A, Stoiljković M, Mitrić M, Radetic T, Šaponjić Z. Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior. in Journal of Advanced Ceramics. 2017;6(3):220-229.
doi:10.1007/s40145-017-0233-5 .
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Konstantinović, Zorica, Pomar, Alberto, Stoiljković, Milovan, Mitrić, Miodrag, Radetic, Tamara, Šaponjić, Zoran, "Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior" in Journal of Advanced Ceramics, 6, no. 3 (2017):220-229,
https://doi.org/10.1007/s40145-017-0233-5 . .
2
2
1

Radioactivity in monocalcium phosphate and complete feed mixtures for pigs

Vranješ, Borjana; Mitrović, Branislava M.; Andrić, Velibor; Ajtić, Jelena; Vranješ, Mila

(RAD Association, 2017)

TY  - CONF
AU  - Vranješ, Borjana
AU  - Mitrović, Branislava M.
AU  - Andrić, Velibor
AU  - Ajtić, Jelena
AU  - Vranješ, Mila
PY  - 2017
UR  - http://www.rad-proceedings.org/paper.php?id=127
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7994
AB  - Mineral additives, such as monocalcium phosphate, that are commonly used on pig farms, are obtained by processing phosphate mineral ore, and can contain high levels of 238U. Since ingestion is the main route of radioactive contamination of both animals and humans, the goal of this paper is to measure specific activity of natural and artificial radionuclides in monocalcium phosphate and complete feed mixtures for pigs. Mineral additives with high levels of natural radionuclides can contaminate complete feed mixtures making them unsuitable for use. Samples were collected from three different farms, and in total fifteen samples of monocalcium and forty five samples of complete feed mixture were measured. Samples of monocalcium phosphate show the 238U activity concentration of 13.2-2097Bq/kg. Other naturally occurring radionuclides are measured in monocalcium and the results give: 21.4-25.5 Bq/kg for 40K, 1.5 -12.1 Bq/kg for226Ra, 1.5-2.9 Bq/kg for 232Th, and 1.5-10.8 Bq/kg for 214Bi. These radionuclides are further measured in complete feed mixtures and only one sample shows elevated concentrations of 238U (3.1 Bq/kg) and 226Ra (3.5 Bq/kg). Potassium-40 is detected in all samples, with the specific activity range 208-329 Bq/kg, while other naturally occurring radionuclides and artificial radioceasium are below the detection limits.
PB  - RAD Association
C3  - RAD Conference Proceedings
T1  - Radioactivity in monocalcium phosphate and complete feed mixtures for pigs
VL  - 2
SP  - 121
EP  - 125
DO  - 10.21175/RadProc.2017.25
ER  - 
@conference{
author = "Vranješ, Borjana and Mitrović, Branislava M. and Andrić, Velibor and Ajtić, Jelena and Vranješ, Mila",
year = "2017",
abstract = "Mineral additives, such as monocalcium phosphate, that are commonly used on pig farms, are obtained by processing phosphate mineral ore, and can contain high levels of 238U. Since ingestion is the main route of radioactive contamination of both animals and humans, the goal of this paper is to measure specific activity of natural and artificial radionuclides in monocalcium phosphate and complete feed mixtures for pigs. Mineral additives with high levels of natural radionuclides can contaminate complete feed mixtures making them unsuitable for use. Samples were collected from three different farms, and in total fifteen samples of monocalcium and forty five samples of complete feed mixture were measured. Samples of monocalcium phosphate show the 238U activity concentration of 13.2-2097Bq/kg. Other naturally occurring radionuclides are measured in monocalcium and the results give: 21.4-25.5 Bq/kg for 40K, 1.5 -12.1 Bq/kg for226Ra, 1.5-2.9 Bq/kg for 232Th, and 1.5-10.8 Bq/kg for 214Bi. These radionuclides are further measured in complete feed mixtures and only one sample shows elevated concentrations of 238U (3.1 Bq/kg) and 226Ra (3.5 Bq/kg). Potassium-40 is detected in all samples, with the specific activity range 208-329 Bq/kg, while other naturally occurring radionuclides and artificial radioceasium are below the detection limits.",
publisher = "RAD Association",
journal = "RAD Conference Proceedings",
title = "Radioactivity in monocalcium phosphate and complete feed mixtures for pigs",
volume = "2",
pages = "121-125",
doi = "10.21175/RadProc.2017.25"
}
Vranješ, B., Mitrović, B. M., Andrić, V., Ajtić, J.,& Vranješ, M.. (2017). Radioactivity in monocalcium phosphate and complete feed mixtures for pigs. in RAD Conference Proceedings
RAD Association., 2, 121-125.
https://doi.org/10.21175/RadProc.2017.25
Vranješ B, Mitrović BM, Andrić V, Ajtić J, Vranješ M. Radioactivity in monocalcium phosphate and complete feed mixtures for pigs. in RAD Conference Proceedings. 2017;2:121-125.
doi:10.21175/RadProc.2017.25 .
Vranješ, Borjana, Mitrović, Branislava M., Andrić, Velibor, Ajtić, Jelena, Vranješ, Mila, "Radioactivity in monocalcium phosphate and complete feed mixtures for pigs" in RAD Conference Proceedings, 2 (2017):121-125,
https://doi.org/10.21175/RadProc.2017.25 . .
1
1

Ferromagnetic behavior of Mn2+ doped titania nanotubes

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Konstantinović, Zorica; Radetić, Tamara; Stoiljković, Milovan; Mitrić, Miodrag; Šaponjić, Zoran

(Society of Physical Chemists of Serbia, 2016)

TY  - CONF
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Konstantinović, Zorica
AU  - Radetić, Tamara
AU  - Stoiljković, Milovan
AU  - Mitrić, Miodrag
AU  - Šaponjić, Zoran
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9213
AB  - Hydrothermal synthesis of Mn doped titaniananotubes, which showed room temperature  ferromagnetism  (RTFM)is  reported.  Morphology  of  Mn  doped nanotubes  was  characterized  by  transmission  electron  microscopy  (TEM). The  size  of  nanotubes  was  relatively  uniform  with  outer  diameter  of  about 10  nm  and  lengths  of  up  to  few  hundred  nanometers.  The  x-ray  powder diffraction  (XRPD)  analysis  of  resultant  powder  confirmed  the  appearance of   mixed   crystalline   phases   inMn   doped   nanotubes:hydrogentitanate (H2Ti2O5x   H2O)and   tetragonal   anatasetitania.   RTFM   ordering   with saturation magnetic moment (Ms) of the order of 1.27 μBperMn atom was observed.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
T1  - Ferromagnetic behavior of Mn2+ doped titania nanotubes
SP  - 521
EP  - 524
ER  - 
@conference{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Konstantinović, Zorica and Radetić, Tamara and Stoiljković, Milovan and Mitrić, Miodrag and Šaponjić, Zoran",
year = "2016",
abstract = "Hydrothermal synthesis of Mn doped titaniananotubes, which showed room temperature  ferromagnetism  (RTFM)is  reported.  Morphology  of  Mn  doped nanotubes  was  characterized  by  transmission  electron  microscopy  (TEM). The  size  of  nanotubes  was  relatively  uniform  with  outer  diameter  of  about 10  nm  and  lengths  of  up  to  few  hundred  nanometers.  The  x-ray  powder diffraction  (XRPD)  analysis  of  resultant  powder  confirmed  the  appearance of   mixed   crystalline   phases   inMn   doped   nanotubes:hydrogentitanate (H2Ti2O5x   H2O)and   tetragonal   anatasetitania.   RTFM   ordering   with saturation magnetic moment (Ms) of the order of 1.27 μBperMn atom was observed.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry",
title = "Ferromagnetic behavior of Mn2+ doped titania nanotubes",
pages = "521-524"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Konstantinović, Z., Radetić, T., Stoiljković, M., Mitrić, M.,& Šaponjić, Z.. (2016). Ferromagnetic behavior of Mn2+ doped titania nanotubes. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 521-524.
Vranješ M, Kuljanin-Jakovljević JŽ, Konstantinović Z, Radetić T, Stoiljković M, Mitrić M, Šaponjić Z. Ferromagnetic behavior of Mn2+ doped titania nanotubes. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry. 2016;:521-524..
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Konstantinović, Zorica, Radetić, Tamara, Stoiljković, Milovan, Mitrić, Miodrag, Šaponjić, Zoran, "Ferromagnetic behavior of Mn2+ doped titania nanotubes" in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry (2016):521-524.

Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals: The impact of their size, shape and dopant concentration

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Konstantinović, Zorica; Pomar, Alberto; Ahrenkiel, Scott Phillip; Radetic, Tamara; Stoiljković, Milovan; Mitrić, Miodrag; Šaponjić, Zoran

(Elsevier, 2016)

TY  - JOUR
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Konstantinović, Zorica
AU  - Pomar, Alberto
AU  - Ahrenkiel, Scott Phillip
AU  - Radetic, Tamara
AU  - Stoiljković, Milovan
AU  - Mitrić, Miodrag
AU  - Šaponjić, Zoran
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1024
AB  - Cu2+ doped TiO2 nanocrystals were synthesized using dispersions of titania nanotubes in the presence of Cu2+ ions as a precursors. The morphologies of nanotubular titania precursors and resulted Cu2+ doped TiO2 nanocrystals were characterized by TEM. Structural and optical properties were studied by XRPD analysis and UV-vis spectroscopy in reflectance mode, respectively. Their magnetic properties were investigated using SQUID magnetometer. Tetragonal anatase crystalline structure was confirmed in all synthesized samples. Polygonal (d similar to 15 nm) and spheroid like (length, up to 90 nm) Cu2+ doped TiO2 nanocrystals in samples synthesized at different pHs were observed by TEM. Ferromagnetic ordering with almost closed loop (H-c similar to 200 Oe) was detected in all Cu2+ doped TiO2 nanoparticle films. The saturation magnetization values varied depending on the Cu2+ concentration, nanoparticles shape, size and consequently different number of oxygen vacancies. This study revealed possibility to control magnetic ordering by changing the shape/aspect ratio of Cu2+ doped TiO2 nanocrystals. (C) 2015 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Materials Research Bulletin
T1  - Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals: The impact of their size, shape and dopant concentration
VL  - 76
SP  - 100
EP  - 106
DO  - 10.1016/j.materresbull.2015.11.051
ER  - 
@article{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Konstantinović, Zorica and Pomar, Alberto and Ahrenkiel, Scott Phillip and Radetic, Tamara and Stoiljković, Milovan and Mitrić, Miodrag and Šaponjić, Zoran",
year = "2016",
abstract = "Cu2+ doped TiO2 nanocrystals were synthesized using dispersions of titania nanotubes in the presence of Cu2+ ions as a precursors. The morphologies of nanotubular titania precursors and resulted Cu2+ doped TiO2 nanocrystals were characterized by TEM. Structural and optical properties were studied by XRPD analysis and UV-vis spectroscopy in reflectance mode, respectively. Their magnetic properties were investigated using SQUID magnetometer. Tetragonal anatase crystalline structure was confirmed in all synthesized samples. Polygonal (d similar to 15 nm) and spheroid like (length, up to 90 nm) Cu2+ doped TiO2 nanocrystals in samples synthesized at different pHs were observed by TEM. Ferromagnetic ordering with almost closed loop (H-c similar to 200 Oe) was detected in all Cu2+ doped TiO2 nanoparticle films. The saturation magnetization values varied depending on the Cu2+ concentration, nanoparticles shape, size and consequently different number of oxygen vacancies. This study revealed possibility to control magnetic ordering by changing the shape/aspect ratio of Cu2+ doped TiO2 nanocrystals. (C) 2015 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Materials Research Bulletin",
title = "Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals: The impact of their size, shape and dopant concentration",
volume = "76",
pages = "100-106",
doi = "10.1016/j.materresbull.2015.11.051"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Konstantinović, Z., Pomar, A., Ahrenkiel, S. P., Radetic, T., Stoiljković, M., Mitrić, M.,& Šaponjić, Z.. (2016). Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals: The impact of their size, shape and dopant concentration. in Materials Research Bulletin
Elsevier., 76, 100-106.
https://doi.org/10.1016/j.materresbull.2015.11.051
Vranješ M, Kuljanin-Jakovljević JŽ, Konstantinović Z, Pomar A, Ahrenkiel SP, Radetic T, Stoiljković M, Mitrić M, Šaponjić Z. Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals: The impact of their size, shape and dopant concentration. in Materials Research Bulletin. 2016;76:100-106.
doi:10.1016/j.materresbull.2015.11.051 .
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Konstantinović, Zorica, Pomar, Alberto, Ahrenkiel, Scott Phillip, Radetic, Tamara, Stoiljković, Milovan, Mitrić, Miodrag, Šaponjić, Zoran, "Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals: The impact of their size, shape and dopant concentration" in Materials Research Bulletin, 76 (2016):100-106,
https://doi.org/10.1016/j.materresbull.2015.11.051 . .
7
7
7

Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape

Popović, Iva A.; Milovanović, Dubravka S.; Miletić, Jadranka; Nešić, Maja A.; Vranješ, Mila; Šaponjić, Zoran; Petković, Marijana

(Springer, 2016)

TY  - JOUR
AU  - Popović, Iva A.
AU  - Milovanović, Dubravka S.
AU  - Miletić, Jadranka
AU  - Nešić, Maja A.
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/902
AB  - Titanium dioxide is widely used substrate for laser desorption and ionization [(SA)LDI] mass spectrometry. As the semiconductor with high UV absorbance and rapid energy transfer to analytes, TiO2 provides soft and efficient desorption/ionization of analytes with relatively low degrees of fragmentation in the gas phase. TiO2 nanocrystals are convenient for small molecules (molecular mass LT 1000 Da) analysis due to low number of background signals. Desorption/ionization processes on TiO2 nanocrystals are related to the physical properties of the substrate, such as the ability to absorb and dissipate energy from the irradiating laser light source. In addition, size and shape of nanocrystals also affect these abilities. The aim of this study is to investigate the influence of shape and size dependant TiO2 nanocrystals/UV laser interaction on the quality of the mass spectra, detectability of analyzed molecules, intensities of the signals and homogeneity of co-crystals onto the MALDI plate, of carbohydrates. It is shown that the size and shape of nanocrystals influenced the way of packing carbohydrates onto plate, and thus affects homogeneity and reproducibility of mass spectrometry analysis.
PB  - Springer
T2  - Optical and Quantum Electronics
T1  - Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape
VL  - 48
IS  - 2
DO  - 10.1007/s11082-016-0413-5
ER  - 
@article{
author = "Popović, Iva A. and Milovanović, Dubravka S. and Miletić, Jadranka and Nešić, Maja A. and Vranješ, Mila and Šaponjić, Zoran and Petković, Marijana",
year = "2016",
abstract = "Titanium dioxide is widely used substrate for laser desorption and ionization [(SA)LDI] mass spectrometry. As the semiconductor with high UV absorbance and rapid energy transfer to analytes, TiO2 provides soft and efficient desorption/ionization of analytes with relatively low degrees of fragmentation in the gas phase. TiO2 nanocrystals are convenient for small molecules (molecular mass LT 1000 Da) analysis due to low number of background signals. Desorption/ionization processes on TiO2 nanocrystals are related to the physical properties of the substrate, such as the ability to absorb and dissipate energy from the irradiating laser light source. In addition, size and shape of nanocrystals also affect these abilities. The aim of this study is to investigate the influence of shape and size dependant TiO2 nanocrystals/UV laser interaction on the quality of the mass spectra, detectability of analyzed molecules, intensities of the signals and homogeneity of co-crystals onto the MALDI plate, of carbohydrates. It is shown that the size and shape of nanocrystals influenced the way of packing carbohydrates onto plate, and thus affects homogeneity and reproducibility of mass spectrometry analysis.",
publisher = "Springer",
journal = "Optical and Quantum Electronics",
title = "Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape",
volume = "48",
number = "2",
doi = "10.1007/s11082-016-0413-5"
}
Popović, I. A., Milovanović, D. S., Miletić, J., Nešić, M. A., Vranješ, M., Šaponjić, Z.,& Petković, M.. (2016). Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape. in Optical and Quantum Electronics
Springer., 48(2).
https://doi.org/10.1007/s11082-016-0413-5
Popović IA, Milovanović DS, Miletić J, Nešić MA, Vranješ M, Šaponjić Z, Petković M. Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape. in Optical and Quantum Electronics. 2016;48(2).
doi:10.1007/s11082-016-0413-5 .
Popović, Iva A., Milovanović, Dubravka S., Miletić, Jadranka, Nešić, Maja A., Vranješ, Mila, Šaponjić, Zoran, Petković, Marijana, "Dependence of the quality of SALDI TOF MS analysis on the TiO2 nanocrystals size and shape" in Optical and Quantum Electronics, 48, no. 2 (2016),
https://doi.org/10.1007/s11082-016-0413-5 . .
9
7
8

TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods

Popović, Iva A.; Nešić, Mioljub V.; Vranješ, Mila; Šaponjić, Zoran; Petković, Marijana

(2016)

TY  - JOUR
AU  - Popović, Iva A.
AU  - Nešić, Mioljub V.
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/886
AB  - In the present study, the possibility for the application of TiO2 nanocrystals of various shapes and sizes, for substrate-assisted laser desorption and ionization time-of-flight mass spectrometric (SALDI TOF MS) quantitative analysis of small molecules (steroid hormones, amino acids and saccharides) was investigated. Parameters, such as homogeneity of the substrate/analyte distribution, reproducibility of the measurements, within-day, and day-to-day repeatability, were determined. The homogeneity of different nanocrystal/analyte combinations on the target plate were compared based on the signal-to-noise values of several analyte signals. Obtained results show that all TiO2 nanocrystals, regardless of their shape, have great potential for the detection and determination of steroid hormones, amino acids and saccharides with good analytical parameters and detection limits. On the other hand, the reproducibility of the S/N ratio and detectability of the analytes recorded in various modes differ depending on the substrate. All examined molecules were detectable in negative ion mode with TiO2 NTs, in contrast to all other organic matrices and substrates, and the best reproducibility was obtained with the larger nanocrystals, TiO2 PNSs and TiO2 NTs, making them good candidates for the quantitative determination of small molecules.
T2  - RSC Advances
T1  - TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods
VL  - 6
IS  - 2
SP  - 1027
EP  - 1036
DO  - 10.1039/c5ra20042c
ER  - 
@article{
author = "Popović, Iva A. and Nešić, Mioljub V. and Vranješ, Mila and Šaponjić, Zoran and Petković, Marijana",
year = "2016",
abstract = "In the present study, the possibility for the application of TiO2 nanocrystals of various shapes and sizes, for substrate-assisted laser desorption and ionization time-of-flight mass spectrometric (SALDI TOF MS) quantitative analysis of small molecules (steroid hormones, amino acids and saccharides) was investigated. Parameters, such as homogeneity of the substrate/analyte distribution, reproducibility of the measurements, within-day, and day-to-day repeatability, were determined. The homogeneity of different nanocrystal/analyte combinations on the target plate were compared based on the signal-to-noise values of several analyte signals. Obtained results show that all TiO2 nanocrystals, regardless of their shape, have great potential for the detection and determination of steroid hormones, amino acids and saccharides with good analytical parameters and detection limits. On the other hand, the reproducibility of the S/N ratio and detectability of the analytes recorded in various modes differ depending on the substrate. All examined molecules were detectable in negative ion mode with TiO2 NTs, in contrast to all other organic matrices and substrates, and the best reproducibility was obtained with the larger nanocrystals, TiO2 PNSs and TiO2 NTs, making them good candidates for the quantitative determination of small molecules.",
journal = "RSC Advances",
title = "TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods",
volume = "6",
number = "2",
pages = "1027-1036",
doi = "10.1039/c5ra20042c"
}
Popović, I. A., Nešić, M. V., Vranješ, M., Šaponjić, Z.,& Petković, M.. (2016). TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods. in RSC Advances, 6(2), 1027-1036.
https://doi.org/10.1039/c5ra20042c
Popović IA, Nešić MV, Vranješ M, Šaponjić Z, Petković M. TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods. in RSC Advances. 2016;6(2):1027-1036.
doi:10.1039/c5ra20042c .
Popović, Iva A., Nešić, Mioljub V., Vranješ, Mila, Šaponjić, Zoran, Petković, Marijana, "TiO2 nanocrystals - assisted laser desorption and ionization time-of-flight mass spectrometric analysis of steroid hormones, amino acids and saccharides. Validation and comparison of methods" in RSC Advances, 6, no. 2 (2016):1027-1036,
https://doi.org/10.1039/c5ra20042c . .
9
9
8

SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates

Popović, Iva A.; Nešić, Maja A.; Vranješ, Mila; Šaponjić, Zoran; Petković, Marijana

(2016)

TY  - JOUR
AU  - Popović, Iva A.
AU  - Nešić, Maja A.
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Petković, Marijana
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1267
AB  - Surface-assisted laser desorption/ionisation time-of-flight mass spectrometry (SALDI-TOF-MS) might be the method of choice for the analysis of low mass molecules (less than m/z 500). Titanium dioxide (TiO2) nanocrystals as a substrate for SALDI-TOF-MS improve the reproducibility of the signal intensities and prevent the fragmentation of some molecules upon laser irradiation, as we have previously shown. In addition, variously shaped and sized TiO2 nanocrystals/substrates for SALDI-MS could be used for quantification of small molecules, which are otherwise difficult to detect with the assistance of organic matrices. TiO2-assisted LDI-MS spectra could be acquired with excellent reproducibility and repeatability and with low detection limit. In the current study, we analysed the spectra of dexasone, citric acid, vitamin E and vitamin A acquired with TiO2 nanocrystals of various shapes and dimensions, i.e. the colloidal TiO2 nanoparticles (TiO2 NPs), TiO2 prolate nanospheroids (TiO2 PNSs) and TiO2 nanotubes (TiO2 NTs). Various shapes and dimensions of substrates were used since these factors determine desorption and ionisation processes. The homogeneity on the target plate was compared based on signal-to-noise values of peaks of interest of analysed molecules as well as the within-day and day-to-day repeatability. In summary, the obtained results show that the applicability of individual TiO2 nanocrystals depends on the analyte. Signals which are acquired with the assistance of TiO2 PNSs have the highest sensitivity and reproducibility (the smallest standard deviation), even compared with those in the LDI mode. This implies that TiO2 PNSs could also be suitable for quantitative analyses of small molecules.
T2  - Analytical and Bioanalytical Chemistry
T1  - SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates
VL  - 408
IS  - 26
SP  - 7481
EP  - 7490
DO  - 10.1007/s00216-016-9846-8
ER  - 
@article{
author = "Popović, Iva A. and Nešić, Maja A. and Vranješ, Mila and Šaponjić, Zoran and Petković, Marijana",
year = "2016",
abstract = "Surface-assisted laser desorption/ionisation time-of-flight mass spectrometry (SALDI-TOF-MS) might be the method of choice for the analysis of low mass molecules (less than m/z 500). Titanium dioxide (TiO2) nanocrystals as a substrate for SALDI-TOF-MS improve the reproducibility of the signal intensities and prevent the fragmentation of some molecules upon laser irradiation, as we have previously shown. In addition, variously shaped and sized TiO2 nanocrystals/substrates for SALDI-MS could be used for quantification of small molecules, which are otherwise difficult to detect with the assistance of organic matrices. TiO2-assisted LDI-MS spectra could be acquired with excellent reproducibility and repeatability and with low detection limit. In the current study, we analysed the spectra of dexasone, citric acid, vitamin E and vitamin A acquired with TiO2 nanocrystals of various shapes and dimensions, i.e. the colloidal TiO2 nanoparticles (TiO2 NPs), TiO2 prolate nanospheroids (TiO2 PNSs) and TiO2 nanotubes (TiO2 NTs). Various shapes and dimensions of substrates were used since these factors determine desorption and ionisation processes. The homogeneity on the target plate was compared based on signal-to-noise values of peaks of interest of analysed molecules as well as the within-day and day-to-day repeatability. In summary, the obtained results show that the applicability of individual TiO2 nanocrystals depends on the analyte. Signals which are acquired with the assistance of TiO2 PNSs have the highest sensitivity and reproducibility (the smallest standard deviation), even compared with those in the LDI mode. This implies that TiO2 PNSs could also be suitable for quantitative analyses of small molecules.",
journal = "Analytical and Bioanalytical Chemistry",
title = "SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates",
volume = "408",
number = "26",
pages = "7481-7490",
doi = "10.1007/s00216-016-9846-8"
}
Popović, I. A., Nešić, M. A., Vranješ, M., Šaponjić, Z.,& Petković, M.. (2016). SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates. in Analytical and Bioanalytical Chemistry, 408(26), 7481-7490.
https://doi.org/10.1007/s00216-016-9846-8
Popović IA, Nešić MA, Vranješ M, Šaponjić Z, Petković M. SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates. in Analytical and Bioanalytical Chemistry. 2016;408(26):7481-7490.
doi:10.1007/s00216-016-9846-8 .
Popović, Iva A., Nešić, Maja A., Vranješ, Mila, Šaponjić, Zoran, Petković, Marijana, "SALDI-TOF-MS analyses of small molecules (citric acid, dexasone, vitamins E and A) using TiO2 nanocrystals as substrates" in Analytical and Bioanalytical Chemistry, 408, no. 26 (2016):7481-7490,
https://doi.org/10.1007/s00216-016-9846-8 . .
1
19
15
15

Sinteza i karakterizacija nanočestica titan(IV) oksida dopiranih jonima Sm3+, Eu3+, Ni2+ i Cu2+

Vranješ, Mila

(Универзитет у Београду, Факултет за физичку хемију, 2015)

TY  - THES
AU  - Vranješ, Mila
PY  - 2015
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=3176
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:11529/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=47611407
UR  - http://nardus.mpn.gov.rs/123456789/5875
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7288
AB  - Predmet istraživanja ove doktorske disertacije obuhvata sintezu nanočestica TiO2 različitih oblika i veličina dopiranih jonima retkih zemalja (Eu3+ i Sm3+) i prelaznih metala (Ni2+ i Cu2+) novom metodom, kao i njihovu strukturnu, optičku i magnetnu karakterizaciju.Nanočestice TiO2 dopirane jonima Sm3+, Eu3+, Ni2+ i Cu2+ su sintetisane hidrotermalnom metodom uz upotrebu disperzije nanotuba Ti(IV) oksida u prisustvu jona dopanta kao prekursora. Primenjujući hidrotermalnu transformaciju nanotuba u prisustvu jona dopanta za sintezu dopiranih nanočestica TiO2 izbegavaju se problemi vezani za proces kristalizacije i tzv. samočišćenja dopiranih nanočestica koji se, poznato je, javljaju upotrebom molekulskih prekursora u sintezi, čime se utiče na efikasnost čitavog procesa. Generalno, sinteza dopiranih nanočestica TiO2 koje predstavljaju predmet istraživanja ove doktorske disertacije se odvijala u dva koraka. Naime, prvi korak predstavljala je sinteza prekursorskih nanotuba Ti(IV) oksida hidrotermalnim tretmanom disperzije komercijalnog praha TiO2. Praćen je uticaj promene uslova u kojima se odvija hidrotermalni postupak, kao i postsintetskog tretmana, na oblik, veličinu i kristalnu strukturu rezultujućih nanotuba. Drugi korak u postupku sinteze predstavljala je hidrotermalna transformacija sintetisanih nanotuba u prisustvu jona dopanta, u krajnji produkt tj. dopirane nanočestice TiO2. Primena ove metode omogućava sintezu nanočestica različitih veličina i oblika jednostavnom optimizacijom početnih uslova sinteze (promenom početne koncentracije nanotuba Ti(IV) oksida, pH vrednosti sredine, vremena trajanja hidrotermalnog tretmana i temperature).Rad se tematski može podeliti u dve celine:1. Sinteza i karakterizacija nanočestica TiO2 dopiranih jonima retkih zemalja (Eu3+ i Sm3+); Sinteza i karakterizacija nanočestica TiO2 dopiranih jonima prelaznih metala (Ni2+ i Cu2+)...
AB  - The subject of this PhD thesis is the synthesis of rare earth (Eu3+ and Sm3+) and transition metal (Ni2+ and Cu2+) ions doped TiO2 nanoparticles of different shapes and sizes by a novel method and their structural, optical and magnetic characterization.Sm3+, Eu3+, Ni2+ and Cu2+ doped TiO2 nanoparticles were synthesized by hydrothermal method using dispersions of titania nanotubes in the presence of dopant ions, as precursors. Using hydrothermal transformation of nanotubes in the presence of dopant ions, the problems related to the nucleation stage and consequently self-purification of doped nanocrystals, that occur when molecular precursors used, could be avoided. Synthesis of doped TiO2 nanoparticles that are subject of this PhD thesis included a two-step procedure. Namely, the first step is the synthesis of precursor titania nanotubes by hydrothermal treatment of dispersion of commercial TiO2 powder. The effects of changes of the hydrothermal synthesis conditions on the shape, size and crystal structure of resulting nanotubes were investigated. The second step in the synthetic procedure is hydrothermal transformation of as synthesized nanotubes in the presence of dopant ions into the final product, i.e. doped TiO2 nanoparticles. The use of such synthetic procedure enables the formation of doped nanoparticles of different sizes and shapes, simply by optimization of the initial synthetic conditions (changes in concentration of nanotubes in dispersion, or pH value of dispersion, or duration of hydrothermal treatment and temperature).Subject of this work can be divided into two main units:1. Synthesis and characterization of rare earth ions (Eu3+ and Sm3+) doped TiO2 nanoparticles;2. Synthesis and characterization of transition metal ions (Ni2+ and Cu2+) doped TiO2 nanoparticles...
PB  - Универзитет у Београду, Факултет за физичку хемију
T2  - Универзитет у Београду
T1  - Sinteza i karakterizacija nanočestica titan(IV) oksida dopiranih jonima Sm3+, Eu3+, Ni2+ i Cu2+
T1  - Synthesis and characterization od Sm3+, Eu3+, Ni2+ and Cu2+ doped titanium (IV) oxide nanoparticles
ER  - 
@phdthesis{
author = "Vranješ, Mila",
year = "2015",
abstract = "Predmet istraživanja ove doktorske disertacije obuhvata sintezu nanočestica TiO2 različitih oblika i veličina dopiranih jonima retkih zemalja (Eu3+ i Sm3+) i prelaznih metala (Ni2+ i Cu2+) novom metodom, kao i njihovu strukturnu, optičku i magnetnu karakterizaciju.Nanočestice TiO2 dopirane jonima Sm3+, Eu3+, Ni2+ i Cu2+ su sintetisane hidrotermalnom metodom uz upotrebu disperzije nanotuba Ti(IV) oksida u prisustvu jona dopanta kao prekursora. Primenjujući hidrotermalnu transformaciju nanotuba u prisustvu jona dopanta za sintezu dopiranih nanočestica TiO2 izbegavaju se problemi vezani za proces kristalizacije i tzv. samočišćenja dopiranih nanočestica koji se, poznato je, javljaju upotrebom molekulskih prekursora u sintezi, čime se utiče na efikasnost čitavog procesa. Generalno, sinteza dopiranih nanočestica TiO2 koje predstavljaju predmet istraživanja ove doktorske disertacije se odvijala u dva koraka. Naime, prvi korak predstavljala je sinteza prekursorskih nanotuba Ti(IV) oksida hidrotermalnim tretmanom disperzije komercijalnog praha TiO2. Praćen je uticaj promene uslova u kojima se odvija hidrotermalni postupak, kao i postsintetskog tretmana, na oblik, veličinu i kristalnu strukturu rezultujućih nanotuba. Drugi korak u postupku sinteze predstavljala je hidrotermalna transformacija sintetisanih nanotuba u prisustvu jona dopanta, u krajnji produkt tj. dopirane nanočestice TiO2. Primena ove metode omogućava sintezu nanočestica različitih veličina i oblika jednostavnom optimizacijom početnih uslova sinteze (promenom početne koncentracije nanotuba Ti(IV) oksida, pH vrednosti sredine, vremena trajanja hidrotermalnog tretmana i temperature).Rad se tematski može podeliti u dve celine:1. Sinteza i karakterizacija nanočestica TiO2 dopiranih jonima retkih zemalja (Eu3+ i Sm3+); Sinteza i karakterizacija nanočestica TiO2 dopiranih jonima prelaznih metala (Ni2+ i Cu2+)..., The subject of this PhD thesis is the synthesis of rare earth (Eu3+ and Sm3+) and transition metal (Ni2+ and Cu2+) ions doped TiO2 nanoparticles of different shapes and sizes by a novel method and their structural, optical and magnetic characterization.Sm3+, Eu3+, Ni2+ and Cu2+ doped TiO2 nanoparticles were synthesized by hydrothermal method using dispersions of titania nanotubes in the presence of dopant ions, as precursors. Using hydrothermal transformation of nanotubes in the presence of dopant ions, the problems related to the nucleation stage and consequently self-purification of doped nanocrystals, that occur when molecular precursors used, could be avoided. Synthesis of doped TiO2 nanoparticles that are subject of this PhD thesis included a two-step procedure. Namely, the first step is the synthesis of precursor titania nanotubes by hydrothermal treatment of dispersion of commercial TiO2 powder. The effects of changes of the hydrothermal synthesis conditions on the shape, size and crystal structure of resulting nanotubes were investigated. The second step in the synthetic procedure is hydrothermal transformation of as synthesized nanotubes in the presence of dopant ions into the final product, i.e. doped TiO2 nanoparticles. The use of such synthetic procedure enables the formation of doped nanoparticles of different sizes and shapes, simply by optimization of the initial synthetic conditions (changes in concentration of nanotubes in dispersion, or pH value of dispersion, or duration of hydrothermal treatment and temperature).Subject of this work can be divided into two main units:1. Synthesis and characterization of rare earth ions (Eu3+ and Sm3+) doped TiO2 nanoparticles;2. Synthesis and characterization of transition metal ions (Ni2+ and Cu2+) doped TiO2 nanoparticles...",
publisher = "Универзитет у Београду, Факултет за физичку хемију",
journal = "Универзитет у Београду",
title = "Sinteza i karakterizacija nanočestica titan(IV) oksida dopiranih jonima Sm3+, Eu3+, Ni2+ i Cu2+, Synthesis and characterization od Sm3+, Eu3+, Ni2+ and Cu2+ doped titanium (IV) oxide nanoparticles"
}
Vranješ, M.. (2015). Sinteza i karakterizacija nanočestica titan(IV) oksida dopiranih jonima Sm3+, Eu3+, Ni2+ i Cu2+. in Универзитет у Београду
Универзитет у Београду, Факултет за физичку хемију..
Vranješ M. Sinteza i karakterizacija nanočestica titan(IV) oksida dopiranih jonima Sm3+, Eu3+, Ni2+ i Cu2+. in Универзитет у Београду. 2015;..
Vranješ, Mila, "Sinteza i karakterizacija nanočestica titan(IV) oksida dopiranih jonima Sm3+, Eu3+, Ni2+ i Cu2+" in Универзитет у Београду (2015).

In situ synthesis of TiO2(B) nanotube/nanoparticle composite anode materials for lithium ion batteries

Liu, Xiang; Sun, Qian; Ng, Alan M. C.; Djurisic, Aleksandra B.; Xie, Maohai; Liao, Changzhong; Shih, Kaimin; Vranješ, Mila; Nedeljković, Jovan; Deng, Zhaofeng

(2015)

TY  - JOUR
AU  - Liu, Xiang
AU  - Sun, Qian
AU  - Ng, Alan M. C.
AU  - Djurisic, Aleksandra B.
AU  - Xie, Maohai
AU  - Liao, Changzhong
AU  - Shih, Kaimin
AU  - Vranješ, Mila
AU  - Nedeljković, Jovan
AU  - Deng, Zhaofeng
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/783
AB  - Titania nanotubes were prepared by a simple hydrothermal route. Their electrochemical performance has been examined in detail and compared to TiO2(B) nanoparticles, TiO2 anatase and P25 titania nanoparticles. The cycling and rate performance of TiO2 nanotubes is superior to both types of nanoparticles, and it can be further improved by an in situ titanium precursor treatment, which results in the formation of TiO2 nanoparticles on/between the nanotubes. The obtained specific capacity after 200 cycles at 0.2 A g(-1) charge/discharge rate remained above 130 mAh g(-1). The enhanced lithium storage properties of these samples can be attributed to their unique morphology and crystal structure.
T2  - Nanotechnology
T1  - In situ synthesis of TiO2(B) nanotube/nanoparticle composite anode materials for lithium ion batteries
VL  - 26
IS  - 42
DO  - 10.1088/0957-4484/26/42/425403
ER  - 
@article{
author = "Liu, Xiang and Sun, Qian and Ng, Alan M. C. and Djurisic, Aleksandra B. and Xie, Maohai and Liao, Changzhong and Shih, Kaimin and Vranješ, Mila and Nedeljković, Jovan and Deng, Zhaofeng",
year = "2015",
abstract = "Titania nanotubes were prepared by a simple hydrothermal route. Their electrochemical performance has been examined in detail and compared to TiO2(B) nanoparticles, TiO2 anatase and P25 titania nanoparticles. The cycling and rate performance of TiO2 nanotubes is superior to both types of nanoparticles, and it can be further improved by an in situ titanium precursor treatment, which results in the formation of TiO2 nanoparticles on/between the nanotubes. The obtained specific capacity after 200 cycles at 0.2 A g(-1) charge/discharge rate remained above 130 mAh g(-1). The enhanced lithium storage properties of these samples can be attributed to their unique morphology and crystal structure.",
journal = "Nanotechnology",
title = "In situ synthesis of TiO2(B) nanotube/nanoparticle composite anode materials for lithium ion batteries",
volume = "26",
number = "42",
doi = "10.1088/0957-4484/26/42/425403"
}
Liu, X., Sun, Q., Ng, A. M. C., Djurisic, A. B., Xie, M., Liao, C., Shih, K., Vranješ, M., Nedeljković, J.,& Deng, Z.. (2015). In situ synthesis of TiO2(B) nanotube/nanoparticle composite anode materials for lithium ion batteries. in Nanotechnology, 26(42).
https://doi.org/10.1088/0957-4484/26/42/425403
Liu X, Sun Q, Ng AMC, Djurisic AB, Xie M, Liao C, Shih K, Vranješ M, Nedeljković J, Deng Z. In situ synthesis of TiO2(B) nanotube/nanoparticle composite anode materials for lithium ion batteries. in Nanotechnology. 2015;26(42).
doi:10.1088/0957-4484/26/42/425403 .
Liu, Xiang, Sun, Qian, Ng, Alan M. C., Djurisic, Aleksandra B., Xie, Maohai, Liao, Changzhong, Shih, Kaimin, Vranješ, Mila, Nedeljković, Jovan, Deng, Zhaofeng, "In situ synthesis of TiO2(B) nanotube/nanoparticle composite anode materials for lithium ion batteries" in Nanotechnology, 26, no. 42 (2015),
https://doi.org/10.1088/0957-4484/26/42/425403 . .
3
3
3

Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes

Popović, Iva A.; Nešić, Maja A.; Nišavić, Marija; Vranješ, Mila; Radetic, Tamara; Šaponjić, Zoran; Masnikosa, Romana; Petković, Marijana

(2015)

TY  - JOUR
AU  - Popović, Iva A.
AU  - Nešić, Maja A.
AU  - Nišavić, Marija
AU  - Vranješ, Mila
AU  - Radetic, Tamara
AU  - Šaponjić, Zoran
AU  - Masnikosa, Romana
AU  - Petković, Marijana
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/544
AB  - Nanostructured materials as substrates for surface-assisted laser desorption and ionization time-of-flight mass spectrometry have two main advantages such as small number of signals in the low mass range and salt tolerance. We have also previously observed decreased extent of undesired fragmentation of bipyridine-containing transition metal complexes in the presence of TiO2 nanoparticles (NPs). In this work, we extended our previous study and tested whether both TiO2 NPs and TiO2 prolate nanospheroids (PNSs) can be used as substrates for SALDI-MS of bipyridine-containing transition metal complexes and whether they tolerate intense laser and the presence of inorganic salts. TiO2 NPs (an average diameter of 5 nm) and PNSs (length: 40-50 nm, the lateral dimension: 14-16 nm) were characterized microscopically and their mass spectra were analyzed, as well as the spectra of bipyridine-containing Pt(II) and Ru(III) complexes. Our results show that seven times higher analyte signals can be obtained in the presence of PNSs compared to the signals acquired with NPs and three times higher compared to spectra acquired without a substrate. The presence of inorganic salt did not affect the spectra, which makes both TiO2 nanocrystals suitable for MS analysis of transition metal complexes in biological fluids. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes
VL  - 150
SP  - 84
EP  - 88
DO  - 10.1016/j.matlet.2015.03.004
ER  - 
@article{
author = "Popović, Iva A. and Nešić, Maja A. and Nišavić, Marija and Vranješ, Mila and Radetic, Tamara and Šaponjić, Zoran and Masnikosa, Romana and Petković, Marijana",
year = "2015",
abstract = "Nanostructured materials as substrates for surface-assisted laser desorption and ionization time-of-flight mass spectrometry have two main advantages such as small number of signals in the low mass range and salt tolerance. We have also previously observed decreased extent of undesired fragmentation of bipyridine-containing transition metal complexes in the presence of TiO2 nanoparticles (NPs). In this work, we extended our previous study and tested whether both TiO2 NPs and TiO2 prolate nanospheroids (PNSs) can be used as substrates for SALDI-MS of bipyridine-containing transition metal complexes and whether they tolerate intense laser and the presence of inorganic salts. TiO2 NPs (an average diameter of 5 nm) and PNSs (length: 40-50 nm, the lateral dimension: 14-16 nm) were characterized microscopically and their mass spectra were analyzed, as well as the spectra of bipyridine-containing Pt(II) and Ru(III) complexes. Our results show that seven times higher analyte signals can be obtained in the presence of PNSs compared to the signals acquired with NPs and three times higher compared to spectra acquired without a substrate. The presence of inorganic salt did not affect the spectra, which makes both TiO2 nanocrystals suitable for MS analysis of transition metal complexes in biological fluids. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes",
volume = "150",
pages = "84-88",
doi = "10.1016/j.matlet.2015.03.004"
}
Popović, I. A., Nešić, M. A., Nišavić, M., Vranješ, M., Radetic, T., Šaponjić, Z., Masnikosa, R.,& Petković, M.. (2015). Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes. in Materials Letters, 150, 84-88.
https://doi.org/10.1016/j.matlet.2015.03.004
Popović IA, Nešić MA, Nišavić M, Vranješ M, Radetic T, Šaponjić Z, Masnikosa R, Petković M. Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes. in Materials Letters. 2015;150:84-88.
doi:10.1016/j.matlet.2015.03.004 .
Popović, Iva A., Nešić, Maja A., Nišavić, Marija, Vranješ, Mila, Radetic, Tamara, Šaponjić, Zoran, Masnikosa, Romana, Petković, Marijana, "Suitability of TiO2 nanoparticles and prolate nanospheroids for laser desorption/ionization mass spectrometric characterization of bipyridine-containing complexes" in Materials Letters, 150 (2015):84-88,
https://doi.org/10.1016/j.matlet.2015.03.004 . .
12
10
10

Silver film on nanocrystalline TiO2 support: Photocatalytic and antimicrobial ability

Vukoje, Ivana D.; Tomasevic-Ilic, Tijana D.; Zarubica, Aleksandra R.; Dimitrijević, Suzana I.; Budimir, Milica; Vranješ, Mila; Šaponjić, Zoran; Nedeljković, Jovan

(2014)

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Tomasevic-Ilic, Tijana D.
AU  - Zarubica, Aleksandra R.
AU  - Dimitrijević, Suzana I.
AU  - Budimir, Milica
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/343
AB  - Nanocrystalline TiO2 films were prepared on glass slides by the dip coating technique using colloidal solutions consisting of 4.5 nm particles as a precursor. Photoirradiation of nanocrystalline TiO2 film modified with alanine that covalently binds to the surface of TiO2 and at the same time chelate silver ions induced formation of metallic silver film. Optical and morphological properties of thin silver films on nanocrystalline TiO2 support were studied by absorption spectroscopy and atomic force microscopy. Improvement of photocatalytic performance of nanocrystalline TiO2 films after deposition of silver was observed in degradation reaction of crystal violet. Antimicrobial ability of deposited silver films on nanocrystalline TiO2 support was tested in dark as a function of time against Escherichia coli, Staphylococcus aureus, and Candida albicans. The silver films ensured maximum cells reduction of both bacteria, while the fungi reduction reached satisfactory 98.45% after 24 h of contact. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - Silver film on nanocrystalline TiO2 support: Photocatalytic and antimicrobial ability
VL  - 60
SP  - 824
EP  - 829
DO  - 10.1016/j.materresbull.2014.09.073
ER  - 
@article{
author = "Vukoje, Ivana D. and Tomasevic-Ilic, Tijana D. and Zarubica, Aleksandra R. and Dimitrijević, Suzana I. and Budimir, Milica and Vranješ, Mila and Šaponjić, Zoran and Nedeljković, Jovan",
year = "2014",
abstract = "Nanocrystalline TiO2 films were prepared on glass slides by the dip coating technique using colloidal solutions consisting of 4.5 nm particles as a precursor. Photoirradiation of nanocrystalline TiO2 film modified with alanine that covalently binds to the surface of TiO2 and at the same time chelate silver ions induced formation of metallic silver film. Optical and morphological properties of thin silver films on nanocrystalline TiO2 support were studied by absorption spectroscopy and atomic force microscopy. Improvement of photocatalytic performance of nanocrystalline TiO2 films after deposition of silver was observed in degradation reaction of crystal violet. Antimicrobial ability of deposited silver films on nanocrystalline TiO2 support was tested in dark as a function of time against Escherichia coli, Staphylococcus aureus, and Candida albicans. The silver films ensured maximum cells reduction of both bacteria, while the fungi reduction reached satisfactory 98.45% after 24 h of contact. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "Silver film on nanocrystalline TiO2 support: Photocatalytic and antimicrobial ability",
volume = "60",
pages = "824-829",
doi = "10.1016/j.materresbull.2014.09.073"
}
Vukoje, I. D., Tomasevic-Ilic, T. D., Zarubica, A. R., Dimitrijević, S. I., Budimir, M., Vranješ, M., Šaponjić, Z.,& Nedeljković, J.. (2014). Silver film on nanocrystalline TiO2 support: Photocatalytic and antimicrobial ability. in Materials Research Bulletin, 60, 824-829.
https://doi.org/10.1016/j.materresbull.2014.09.073
Vukoje ID, Tomasevic-Ilic TD, Zarubica AR, Dimitrijević SI, Budimir M, Vranješ M, Šaponjić Z, Nedeljković J. Silver film on nanocrystalline TiO2 support: Photocatalytic and antimicrobial ability. in Materials Research Bulletin. 2014;60:824-829.
doi:10.1016/j.materresbull.2014.09.073 .
Vukoje, Ivana D., Tomasevic-Ilic, Tijana D., Zarubica, Aleksandra R., Dimitrijević, Suzana I., Budimir, Milica, Vranješ, Mila, Šaponjić, Zoran, Nedeljković, Jovan, "Silver film on nanocrystalline TiO2 support: Photocatalytic and antimicrobial ability" in Materials Research Bulletin, 60 (2014):824-829,
https://doi.org/10.1016/j.materresbull.2014.09.073 . .
4
3
4

Elongated titania nanostructures as efficient photocatalysts for degradation of selected herbicides

Vranješ, Mila; Šaponjić, Zoran; Živković, Ljiljana; Despotović, Vesna N.; Šojić, Daniela V.; Abramović, Biljana F.; Čomor, Mirjana

(2014)

TY  - JOUR
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Živković, Ljiljana
AU  - Despotović, Vesna N.
AU  - Šojić, Daniela V.
AU  - Abramović, Biljana F.
AU  - Čomor, Mirjana
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/75
AB  - Titanium dioxide nanotubes (TNT) were synthesized via hydrothermal method and calcined at various temperatures. The obtained calcined TiO2 nanomaterials with specific elongation orientation were characterized by transmission and scanning electron microscopy (TEM, SEM), X-ray diffraction (XRD), UV/Vis diffuse reflection spectroscopy (DRS), Laser Doppler electrophoresis (LDE) and their textural properties were evaluated. The photocatalytic activity of obtained nanopowders was evaluated considering photodegradation rate of herbicide clomazone, rarely studied herbicide. The influence of calcination temperature of catalysts with elongated morphology on their photocatalytic activity was evaluated. The best results were obtained with TNT annealed at 700 degrees C, which can be assigned to the best balance between crystal structure, morphology and surface properties of nanoparticles induced by annealing. Also, the photocatalytic degradation rates of another two herbicides (picloram, and mecoprop) were compared, due to possibility that the efficiency of photo catalytic degradation is greatly influenced by the molecular structure. The mineralization degree of selected herbicides in the presence of TiO2 based photocatalysts was evaluated applying total organic carbon (TOC) measurements. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Applied Catalysis. B: Environmental
T1  - Elongated titania nanostructures as efficient photocatalysts for degradation of selected herbicides
VL  - 160
SP  - 589
EP  - 596
DO  - 10.1016/j.apcatb.2014.06.005
ER  - 
@article{
author = "Vranješ, Mila and Šaponjić, Zoran and Živković, Ljiljana and Despotović, Vesna N. and Šojić, Daniela V. and Abramović, Biljana F. and Čomor, Mirjana",
year = "2014",
abstract = "Titanium dioxide nanotubes (TNT) were synthesized via hydrothermal method and calcined at various temperatures. The obtained calcined TiO2 nanomaterials with specific elongation orientation were characterized by transmission and scanning electron microscopy (TEM, SEM), X-ray diffraction (XRD), UV/Vis diffuse reflection spectroscopy (DRS), Laser Doppler electrophoresis (LDE) and their textural properties were evaluated. The photocatalytic activity of obtained nanopowders was evaluated considering photodegradation rate of herbicide clomazone, rarely studied herbicide. The influence of calcination temperature of catalysts with elongated morphology on their photocatalytic activity was evaluated. The best results were obtained with TNT annealed at 700 degrees C, which can be assigned to the best balance between crystal structure, morphology and surface properties of nanoparticles induced by annealing. Also, the photocatalytic degradation rates of another two herbicides (picloram, and mecoprop) were compared, due to possibility that the efficiency of photo catalytic degradation is greatly influenced by the molecular structure. The mineralization degree of selected herbicides in the presence of TiO2 based photocatalysts was evaluated applying total organic carbon (TOC) measurements. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Applied Catalysis. B: Environmental",
title = "Elongated titania nanostructures as efficient photocatalysts for degradation of selected herbicides",
volume = "160",
pages = "589-596",
doi = "10.1016/j.apcatb.2014.06.005"
}
Vranješ, M., Šaponjić, Z., Živković, L., Despotović, V. N., Šojić, D. V., Abramović, B. F.,& Čomor, M.. (2014). Elongated titania nanostructures as efficient photocatalysts for degradation of selected herbicides. in Applied Catalysis. B: Environmental, 160, 589-596.
https://doi.org/10.1016/j.apcatb.2014.06.005
Vranješ M, Šaponjić Z, Živković L, Despotović VN, Šojić DV, Abramović BF, Čomor M. Elongated titania nanostructures as efficient photocatalysts for degradation of selected herbicides. in Applied Catalysis. B: Environmental. 2014;160:589-596.
doi:10.1016/j.apcatb.2014.06.005 .
Vranješ, Mila, Šaponjić, Zoran, Živković, Ljiljana, Despotović, Vesna N., Šojić, Daniela V., Abramović, Biljana F., Čomor, Mirjana, "Elongated titania nanostructures as efficient photocatalysts for degradation of selected herbicides" in Applied Catalysis. B: Environmental, 160 (2014):589-596,
https://doi.org/10.1016/j.apcatb.2014.06.005 . .
1
15
14
15

Morphology transformation induced by calcination: from titania nanotubes to nanoparticles

Vranješ, Mila; Šaponjić, Zoran; Mitrić, Miodrag; Jokić, Bojan M.; Čomor, Mirjana

(Society of Physical Chemists of Serbia, 2014)

TY  - CONF
AU  - Vranješ, Mila
AU  - Šaponjić, Zoran
AU  - Mitrić, Miodrag
AU  - Jokić, Bojan M.
AU  - Čomor, Mirjana
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9231
AB  - Titanium dioxide nanotubes (TNT) synthesized via hydrothermal method
and calcined at various temperatures, from 200-800 °C are characterized
using X-ray diffraction (XRD), UV/Vis spectroscopy and scanning electron
microscopy (FESEM). Tubular structure of as prepared TNT was most
probably lost after calcination at 200 °C. Elongated forms of titania with
different aspect ratios were observed after calcination at all temperatures
lower than 800 °C. Calcination at 800 °C induced complete transformation
of TNT to nanoparticles. Shape transformation was accompanied with
changes in degree of crystallinity and different anatase to rutile crystal phase
ratio.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Morphology transformation induced by calcination: from titania nanotubes to nanoparticles
ER  - 
@conference{
author = "Vranješ, Mila and Šaponjić, Zoran and Mitrić, Miodrag and Jokić, Bojan M. and Čomor, Mirjana",
year = "2014",
abstract = "Titanium dioxide nanotubes (TNT) synthesized via hydrothermal method
and calcined at various temperatures, from 200-800 °C are characterized
using X-ray diffraction (XRD), UV/Vis spectroscopy and scanning electron
microscopy (FESEM). Tubular structure of as prepared TNT was most
probably lost after calcination at 200 °C. Elongated forms of titania with
different aspect ratios were observed after calcination at all temperatures
lower than 800 °C. Calcination at 800 °C induced complete transformation
of TNT to nanoparticles. Shape transformation was accompanied with
changes in degree of crystallinity and different anatase to rutile crystal phase
ratio.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Morphology transformation induced by calcination: from titania nanotubes to nanoparticles"
}
Vranješ, M., Šaponjić, Z., Mitrić, M., Jokić, B. M.,& Čomor, M.. (2014). Morphology transformation induced by calcination: from titania nanotubes to nanoparticles. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia..
Vranješ M, Šaponjić Z, Mitrić M, Jokić BM, Čomor M. Morphology transformation induced by calcination: from titania nanotubes to nanoparticles. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;..
Vranješ, Mila, Šaponjić, Zoran, Mitrić, Miodrag, Jokić, Bojan M., Čomor, Mirjana, "Morphology transformation induced by calcination: from titania nanotubes to nanoparticles" in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry (2014).

Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors

Vranješ, Mila; Konstantinović, Zorica; Pomar, Alberto; Kuljanin-Jakovljević, Jadranka Ž.; Stoiljković, Milovan; Nedeljković, Jovan; Šaponjić, Zoran

(2014)

TY  - JOUR
AU  - Vranješ, Mila
AU  - Konstantinović, Zorica
AU  - Pomar, Alberto
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Stoiljković, Milovan
AU  - Nedeljković, Jovan
AU  - Šaponjić, Zoran
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5851
AB  - Hydrothermal synthetic route for synthesis of Ni2+ doped TiO2 nanocrystals showing room temperature ferromagnetism, using dispersion of titania nanotubes in the presence of Ni2+ ions at different pHs as precursors, is reported. Morphologies of tubular precursors and Ni2+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. Titania nanotubes have outer diameter of about 10 nm while the length varies widely even reaching few hundred nanometers. Ni2+ doped TiO2 nanoparticles synthesized at pH 3 have polygonal shape and dimension of about 20 nm. Transmission electron microscopy analysis revealed presence of mixed shapes (polygonal and rod like) in the sample of Ni2+ doped TiO2 nanoparticles synthesized at pH 5. X-ray diffraction analysis of resultant powder and selected area electron diffraction pattern confirmed the anatase crystal phase of Ni2+ doped TiO2 nanoparticles independently of dopant concentrations (0.09, 0.25, 0.86, 1.48 and 1.80 at%), followed by slight changes of their microstructural parameters. Reflection spectra of Ni2+ doped TiO2 nanoparticles revealed their altered optical properties in comparison to undoped TiO2 nanoparticles. Room temperature ferromagnetic ordering with saturation magnetic moment in the range of 10(-3)-5 x 10(-2) mu B per Ni atom was observed for all measured films made of Ni2+ doped TiO2 nanoparticles. (C) 2013 Elsevier B. V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors
VL  - 589
SP  - 42
EP  - 47
DO  - 10.1016/j.jallcom.2013.11.163
ER  - 
@article{
author = "Vranješ, Mila and Konstantinović, Zorica and Pomar, Alberto and Kuljanin-Jakovljević, Jadranka Ž. and Stoiljković, Milovan and Nedeljković, Jovan and Šaponjić, Zoran",
year = "2014",
abstract = "Hydrothermal synthetic route for synthesis of Ni2+ doped TiO2 nanocrystals showing room temperature ferromagnetism, using dispersion of titania nanotubes in the presence of Ni2+ ions at different pHs as precursors, is reported. Morphologies of tubular precursors and Ni2+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. Titania nanotubes have outer diameter of about 10 nm while the length varies widely even reaching few hundred nanometers. Ni2+ doped TiO2 nanoparticles synthesized at pH 3 have polygonal shape and dimension of about 20 nm. Transmission electron microscopy analysis revealed presence of mixed shapes (polygonal and rod like) in the sample of Ni2+ doped TiO2 nanoparticles synthesized at pH 5. X-ray diffraction analysis of resultant powder and selected area electron diffraction pattern confirmed the anatase crystal phase of Ni2+ doped TiO2 nanoparticles independently of dopant concentrations (0.09, 0.25, 0.86, 1.48 and 1.80 at%), followed by slight changes of their microstructural parameters. Reflection spectra of Ni2+ doped TiO2 nanoparticles revealed their altered optical properties in comparison to undoped TiO2 nanoparticles. Room temperature ferromagnetic ordering with saturation magnetic moment in the range of 10(-3)-5 x 10(-2) mu B per Ni atom was observed for all measured films made of Ni2+ doped TiO2 nanoparticles. (C) 2013 Elsevier B. V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors",
volume = "589",
pages = "42-47",
doi = "10.1016/j.jallcom.2013.11.163"
}
Vranješ, M., Konstantinović, Z., Pomar, A., Kuljanin-Jakovljević, J. Ž., Stoiljković, M., Nedeljković, J.,& Šaponjić, Z.. (2014). Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors. in Journal of Alloys and Compounds, 589, 42-47.
https://doi.org/10.1016/j.jallcom.2013.11.163
Vranješ M, Konstantinović Z, Pomar A, Kuljanin-Jakovljević JŽ, Stoiljković M, Nedeljković J, Šaponjić Z. Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors. in Journal of Alloys and Compounds. 2014;589:42-47.
doi:10.1016/j.jallcom.2013.11.163 .
Vranješ, Mila, Konstantinović, Zorica, Pomar, Alberto, Kuljanin-Jakovljević, Jadranka Ž., Stoiljković, Milovan, Nedeljković, Jovan, Šaponjić, Zoran, "Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors" in Journal of Alloys and Compounds, 589 (2014):42-47,
https://doi.org/10.1016/j.jallcom.2013.11.163 . .
9
10
10

Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Konstantinović, Zorica; Radetić, Tamara; Stoiljković, Milovan; Šaponjić, Zoran

(Society of Physical Chemists of Serbia, 2014)

TY  - CONF
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Konstantinović, Zorica
AU  - Radetić, Tamara
AU  - Stoiljković, Milovan
AU  - Šaponjić, Zoran
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9233
AB  - Hydrothermal synthesis of Cu2+ doped TiO2 nanocrystals, using dispersion
of titania nanotubes in the presence of Cu2+ ions as precursor, which showed
room temperature ferromagnetism, is reported. Morphology of Cu2+ doped
TiO2 nanocrystals was characterized by transmission electron microscopy
(TEM). An average size of polygonal nanocrystals mainly of
square/rectangular shape was around 13 nm. The x-ray powder diffraction
(XRPD) analysis of resultant powder confirmed the anatase crystal phase of
Cu2+ doped TiO2 nanocrystals. Room temperature ferromagnetic ordering
with saturation magnetic moment of the order of 2 x 10-2 μB per Cu atom
was observed.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals
VL  - H-14-P
ER  - 
@conference{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Konstantinović, Zorica and Radetić, Tamara and Stoiljković, Milovan and Šaponjić, Zoran",
year = "2014",
abstract = "Hydrothermal synthesis of Cu2+ doped TiO2 nanocrystals, using dispersion
of titania nanotubes in the presence of Cu2+ ions as precursor, which showed
room temperature ferromagnetism, is reported. Morphology of Cu2+ doped
TiO2 nanocrystals was characterized by transmission electron microscopy
(TEM). An average size of polygonal nanocrystals mainly of
square/rectangular shape was around 13 nm. The x-ray powder diffraction
(XRPD) analysis of resultant powder confirmed the anatase crystal phase of
Cu2+ doped TiO2 nanocrystals. Room temperature ferromagnetic ordering
with saturation magnetic moment of the order of 2 x 10-2 μB per Cu atom
was observed.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals",
volume = "H-14-P"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Konstantinović, Z., Radetić, T., Stoiljković, M.,& Šaponjić, Z.. (2014). Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., H-14-P.
Vranješ M, Kuljanin-Jakovljević JŽ, Konstantinović Z, Radetić T, Stoiljković M, Šaponjić Z. Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;H-14-P..
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Konstantinović, Zorica, Radetić, Tamara, Stoiljković, Milovan, Šaponjić, Zoran, "Room temperature ferromagnetism in Cu2+ doped TiO2 nanocrystals" in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, H-14-P (2014).

Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Ahrenkiel, Scott Phillip; Zeković, Ivana Lj.; Mitrić, Miodrag; Šaponjić, Zoran; Nedeljković, Jovan

(2013)

TY  - JOUR
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Ahrenkiel, Scott Phillip
AU  - Zeković, Ivana Lj.
AU  - Mitrić, Miodrag
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5657
AB  - We report on a new synthetic route for synthesis of Sm3+ doped TiO2 nanocrystals by shape transformation of hydrothermally treated titania nanotubes in the presence of Sm3+ ions. Shape and size of Sm3+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. An average size of polyhedral nanocrystals mainly of square/rectangular shape varied between 12 and 14 nm. X-ray diffraction analysis of resultant powder revealed the anatase crystal phase of Sm3+ doped TiO2 nanocrystals independently of the amount of dopant. Room-temperature photoluminescence observed in the orange-red spectral region, which is associated with (4)G(5/2)- GT H-6(J) (J=5/2, 7/2 and 9/2) f-f transitions of the Sm3+ in the 4f(5) configuration after band-to-band excitation, confirmed energy transfer in Sm3+ doped TiO2 nanocrystals. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Luminescence
T1  - Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties
VL  - 143
SP  - 453
EP  - 458
DO  - 10.1016/j.jlumin.2013.05.022
ER  - 
@article{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Ahrenkiel, Scott Phillip and Zeković, Ivana Lj. and Mitrić, Miodrag and Šaponjić, Zoran and Nedeljković, Jovan",
year = "2013",
abstract = "We report on a new synthetic route for synthesis of Sm3+ doped TiO2 nanocrystals by shape transformation of hydrothermally treated titania nanotubes in the presence of Sm3+ ions. Shape and size of Sm3+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. An average size of polyhedral nanocrystals mainly of square/rectangular shape varied between 12 and 14 nm. X-ray diffraction analysis of resultant powder revealed the anatase crystal phase of Sm3+ doped TiO2 nanocrystals independently of the amount of dopant. Room-temperature photoluminescence observed in the orange-red spectral region, which is associated with (4)G(5/2)- GT H-6(J) (J=5/2, 7/2 and 9/2) f-f transitions of the Sm3+ in the 4f(5) configuration after band-to-band excitation, confirmed energy transfer in Sm3+ doped TiO2 nanocrystals. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Luminescence",
title = "Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties",
volume = "143",
pages = "453-458",
doi = "10.1016/j.jlumin.2013.05.022"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Ahrenkiel, S. P., Zeković, I. Lj., Mitrić, M., Šaponjić, Z.,& Nedeljković, J.. (2013). Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties. in Journal of Luminescence, 143, 453-458.
https://doi.org/10.1016/j.jlumin.2013.05.022
Vranješ M, Kuljanin-Jakovljević JŽ, Ahrenkiel SP, Zeković IL, Mitrić M, Šaponjić Z, Nedeljković J. Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties. in Journal of Luminescence. 2013;143:453-458.
doi:10.1016/j.jlumin.2013.05.022 .
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Ahrenkiel, Scott Phillip, Zeković, Ivana Lj., Mitrić, Miodrag, Šaponjić, Zoran, Nedeljković, Jovan, "Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties" in Journal of Luminescence, 143 (2013):453-458,
https://doi.org/10.1016/j.jlumin.2013.05.022 . .
13
12
13

Structure and luminescence properties of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids synthesized by the hydrothermal processing

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Radetic, Tamara; Stoiljković, Milovan; Mitrić, Miodrag; Šaponjić, Zoran; Nedeljković, Jovan

(2012)

TY  - JOUR
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Radetic, Tamara
AU  - Stoiljković, Milovan
AU  - Mitrić, Miodrag
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4973
AB  - We report on a new approach to the synthesis of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids. They were synthesized by shape transformation of hydrothermally treated titania nanotubes at different pH and in the presence of Eu3+ ions. The use of nanotubes as a precursor to the synthesis of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids opens the possibility of overcoming the problems related to molecular precursors. The shapes and sizes of the nanotubes, Eu3+ doped TiO2 nanocrystals and prolate nanospheroids were characterized by transmission electron microscopy (TEM) technique. Crystal structures of the resultant powders were investigated by X-ray diffraction (XRD) analysis. The percentage ratio of Eu3+ to Ti4+ ions in doped nanocrystals was determined using inductively coupled plasma atomic emission spectroscopy. The optical characterization was done by using fluorescence and ultraviolet-visible reflection spectroscopies. An average size of faceted Eu3+ doped TiO2 nanocrystals was 13 nm. The lateral dimensions of Eu3+ doped TiO2 prolate nanospheroids varied from 14 to 20 nm, while the length varied from 40 to 80 nm, depending on precursor concentrations. The XRD patterns revealed the homogeneous anatase crystal phase of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids independently of the amount of dopant. A postsynthetic treatment (filtration or dialysis) was applied on the dispersions of the doped nanoparticles in order to study the influence of the dopant position on photoluminescence (PL) spectra. In the red spectral region, room temperature PL signals associated with D-5(0) - GT F-7(J) (J = 1-4) transitions of Eu3+ were observed in all samples. The increased contribution of dopants from the interior region of dialyzed nanocrystals to photoluminescence was confirmed by the increase of R value. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Structure and luminescence properties of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids synthesized by the hydrothermal processing
VL  - 38
IS  - 7
SP  - 5629
EP  - 5636
DO  - 10.1016/j.ceramint.2012.04.004
ER  - 
@article{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Radetic, Tamara and Stoiljković, Milovan and Mitrić, Miodrag and Šaponjić, Zoran and Nedeljković, Jovan",
year = "2012",
abstract = "We report on a new approach to the synthesis of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids. They were synthesized by shape transformation of hydrothermally treated titania nanotubes at different pH and in the presence of Eu3+ ions. The use of nanotubes as a precursor to the synthesis of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids opens the possibility of overcoming the problems related to molecular precursors. The shapes and sizes of the nanotubes, Eu3+ doped TiO2 nanocrystals and prolate nanospheroids were characterized by transmission electron microscopy (TEM) technique. Crystal structures of the resultant powders were investigated by X-ray diffraction (XRD) analysis. The percentage ratio of Eu3+ to Ti4+ ions in doped nanocrystals was determined using inductively coupled plasma atomic emission spectroscopy. The optical characterization was done by using fluorescence and ultraviolet-visible reflection spectroscopies. An average size of faceted Eu3+ doped TiO2 nanocrystals was 13 nm. The lateral dimensions of Eu3+ doped TiO2 prolate nanospheroids varied from 14 to 20 nm, while the length varied from 40 to 80 nm, depending on precursor concentrations. The XRD patterns revealed the homogeneous anatase crystal phase of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids independently of the amount of dopant. A postsynthetic treatment (filtration or dialysis) was applied on the dispersions of the doped nanoparticles in order to study the influence of the dopant position on photoluminescence (PL) spectra. In the red spectral region, room temperature PL signals associated with D-5(0) - GT F-7(J) (J = 1-4) transitions of Eu3+ were observed in all samples. The increased contribution of dopants from the interior region of dialyzed nanocrystals to photoluminescence was confirmed by the increase of R value. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Structure and luminescence properties of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids synthesized by the hydrothermal processing",
volume = "38",
number = "7",
pages = "5629-5636",
doi = "10.1016/j.ceramint.2012.04.004"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Radetic, T., Stoiljković, M., Mitrić, M., Šaponjić, Z.,& Nedeljković, J.. (2012). Structure and luminescence properties of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids synthesized by the hydrothermal processing. in Ceramics International, 38(7), 5629-5636.
https://doi.org/10.1016/j.ceramint.2012.04.004
Vranješ M, Kuljanin-Jakovljević JŽ, Radetic T, Stoiljković M, Mitrić M, Šaponjić Z, Nedeljković J. Structure and luminescence properties of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids synthesized by the hydrothermal processing. in Ceramics International. 2012;38(7):5629-5636.
doi:10.1016/j.ceramint.2012.04.004 .
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Radetic, Tamara, Stoiljković, Milovan, Mitrić, Miodrag, Šaponjić, Zoran, Nedeljković, Jovan, "Structure and luminescence properties of Eu3+ doped TiO2 nanocrystals and prolate nanospheroids synthesized by the hydrothermal processing" in Ceramics International, 38, no. 7 (2012):5629-5636,
https://doi.org/10.1016/j.ceramint.2012.04.004 . .
3
15
14
15

Characterization of Sm3+ doped Tio2 and Ni2+ doped Tio2 nanocrystals

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Zeković, Ivana Lj.; Konstantinović, Zorica; Stoiljković, Milovan; Nedeljković, Jovan; Šaponjić, Zoran

(Society of Physical Chemists of Serbia, 2012)

TY  - CONF
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Zeković, Ivana Lj.
AU  - Konstantinović, Zorica
AU  - Stoiljković, Milovan
AU  - Nedeljković, Jovan
AU  - Šaponjić, Zoran
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9309
AB  - We report on a new approach toward synthesis of Sm3+ doped TiO2 and Ni2+ doped
TiO2 nanocrystals by shape transformation of hydrothermally treated titania
nanotubes in the presence of Sm3+ or Ni2+ ions. The percentage ratio of Sm3+ (or
Ni2+) to Ti4+ ions in doped nanocrystals was determined using ICP atomic emission
spectroscopy. The XRD patterns revealed the homogeneous anatase crystal phase
of both 0.4 at% Sm3+ doped TiO2 and 0.12 at% Ni2+ doped TiO2 nanoparticles. An
average size of polyhedral Sm3+ doped TiO2 nanocrystals was between 12 and 14
nm. In the orange-red spectral region, room temperature photoluminescence signals
associated with 4
G5/2 →6
HJ (J = 5/2, 7/2 and 9/2) transitions of Sm3+ was observed
in Sm3+ doped TiO2 nanocrystals. Optically transparent film made of 0.12 at% Ni2+
doped TiO2 nanoparticles showed room temperature ferromagnetic ordering. The
coercive field was found to be HC ~ 80 Oe.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry
T1  - Characterization of Sm3+ doped Tio2 and Ni2+ doped Tio2 nanocrystals
VL  - 1
SP  - H-03-SL
ER  - 
@conference{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Zeković, Ivana Lj. and Konstantinović, Zorica and Stoiljković, Milovan and Nedeljković, Jovan and Šaponjić, Zoran",
year = "2012",
abstract = "We report on a new approach toward synthesis of Sm3+ doped TiO2 and Ni2+ doped
TiO2 nanocrystals by shape transformation of hydrothermally treated titania
nanotubes in the presence of Sm3+ or Ni2+ ions. The percentage ratio of Sm3+ (or
Ni2+) to Ti4+ ions in doped nanocrystals was determined using ICP atomic emission
spectroscopy. The XRD patterns revealed the homogeneous anatase crystal phase
of both 0.4 at% Sm3+ doped TiO2 and 0.12 at% Ni2+ doped TiO2 nanoparticles. An
average size of polyhedral Sm3+ doped TiO2 nanocrystals was between 12 and 14
nm. In the orange-red spectral region, room temperature photoluminescence signals
associated with 4
G5/2 →6
HJ (J = 5/2, 7/2 and 9/2) transitions of Sm3+ was observed
in Sm3+ doped TiO2 nanocrystals. Optically transparent film made of 0.12 at% Ni2+
doped TiO2 nanoparticles showed room temperature ferromagnetic ordering. The
coercive field was found to be HC ~ 80 Oe.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry",
title = "Characterization of Sm3+ doped Tio2 and Ni2+ doped Tio2 nanocrystals",
volume = "1",
pages = "H-03-SL"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Zeković, I. Lj., Konstantinović, Z., Stoiljković, M., Nedeljković, J.,& Šaponjić, Z.. (2012). Characterization of Sm3+ doped Tio2 and Ni2+ doped Tio2 nanocrystals. in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 1, H-03-SL.
Vranješ M, Kuljanin-Jakovljević JŽ, Zeković IL, Konstantinović Z, Stoiljković M, Nedeljković J, Šaponjić Z. Characterization of Sm3+ doped Tio2 and Ni2+ doped Tio2 nanocrystals. in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry. 2012;1:H-03-SL..
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Zeković, Ivana Lj., Konstantinović, Zorica, Stoiljković, Milovan, Nedeljković, Jovan, Šaponjić, Zoran, "Characterization of Sm3+ doped Tio2 and Ni2+ doped Tio2 nanocrystals" in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry, 1 (2012):H-03-SL.

Photoluminescence properties of Eu3+ doped TiO2 nanoparticles

Vranješ, Mila; Kuljanin-Jakovljević, Jadranka Ž.; Nedeljković, Jovan; Šaponjić, Zoran

(Society of Physical Chemists of Serbia, 2010)

TY  - CONF
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Nedeljković, Jovan
AU  - Šaponjić, Zoran
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9327
AB  - Eu3+ doped TiO2 nanoparticles were synthesized during extended hydrothermal
treatment of TiO2 nanotubes dispersion in the presence of Eu(NO3)3. Eu3+ ions
occupy two different sites of titania nanoparticles having different binding
energies: core octahedral sites and undercoordinated surface sites.
Photoluminescence spectra of Eu3+ doped TiO2 nanoparticles independently of
dopant concentration consist of three characteristic peaks located at λ=543, 596,
and 617 nm attributed to the intra-4f transitions of Eu3+ ion. Removal of excess of
Eu3+ ions from the surface and from the undercoordinated surface sites applying
post synthetic dialysis of the sample affects its photoluminescence spectrum. The
peak intensity at λ=617 nm (5D0→7F2 transition) decreases after dialysis. Such
“self-purification” process of nanoparticles is a consequence of fact that dopant
ions which substitute Ti atoms in the undercoordinated coordination environment
of reconstructed surfaces are weakly bound to the anatase lattice.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
T1  - Photoluminescence properties of Eu3+ doped TiO2 nanoparticles
ER  - 
@conference{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Nedeljković, Jovan and Šaponjić, Zoran",
year = "2010",
abstract = "Eu3+ doped TiO2 nanoparticles were synthesized during extended hydrothermal
treatment of TiO2 nanotubes dispersion in the presence of Eu(NO3)3. Eu3+ ions
occupy two different sites of titania nanoparticles having different binding
energies: core octahedral sites and undercoordinated surface sites.
Photoluminescence spectra of Eu3+ doped TiO2 nanoparticles independently of
dopant concentration consist of three characteristic peaks located at λ=543, 596,
and 617 nm attributed to the intra-4f transitions of Eu3+ ion. Removal of excess of
Eu3+ ions from the surface and from the undercoordinated surface sites applying
post synthetic dialysis of the sample affects its photoluminescence spectrum. The
peak intensity at λ=617 nm (5D0→7F2 transition) decreases after dialysis. Such
“self-purification” process of nanoparticles is a consequence of fact that dopant
ions which substitute Ti atoms in the undercoordinated coordination environment
of reconstructed surfaces are weakly bound to the anatase lattice.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry",
title = "Photoluminescence properties of Eu3+ doped TiO2 nanoparticles"
}
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Nedeljković, J.,& Šaponjić, Z.. (2010). Photoluminescence properties of Eu3+ doped TiO2 nanoparticles. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia..
Vranješ M, Kuljanin-Jakovljević JŽ, Nedeljković J, Šaponjić Z. Photoluminescence properties of Eu3+ doped TiO2 nanoparticles. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry. 2010;..
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Nedeljković, Jovan, Šaponjić, Zoran, "Photoluminescence properties of Eu3+ doped TiO2 nanoparticles" in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry (2010).