Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200053 (University of Belgrade, Institute for Multidisciplinary Research)

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Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200053 (University of Belgrade, Institute for Multidisciplinary Research) (en)
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-68/2020-14/200053 (Univerzitet u Beogradu, Institut za multidisciplinarna istraživanja) (sr_RS)
Министарство просвете, науке и технолошког развоја Републике Србије, Уговор бр. 451-03-68/2020-14/200053 (Универзитет у Београду, Институт за мултидисциплинарна истраживања) (sr)
Authors

Publications

Electrospun Nickel Manganite (NiMn2O4) Nanocrystalline Fibers for Humidity and Temperature Sensing

Dojčinović, Milena P.; Vasiljević, Zorka Ž.; Krstić, Jugoslav B.; Vujančević, Jelena D.; Marković, Smilja; Tadić, Nenad B.; Nikolic, Maria Vesna

(Basel : MDPI AG, 2021)

TY  - JOUR
AU  - Dojčinović, Milena P.
AU  - Vasiljević, Zorka Ž.
AU  - Krstić, Jugoslav B.
AU  - Vujančević, Jelena D.
AU  - Marković, Smilja
AU  - Tadić, Nenad B.
AU  - Nikolic, Maria Vesna
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11797
AB  - Nickel manganite nanocrystalline fibers were obtained by electrospinning and subsequent calcination at 400 °C. As-spun fibers were characterized by TG/DTA, Scanning Electron Microscopy and FT-IR spectroscopy analysis. X-ray diffraction and FT-IR spectroscopy analysis confirmed the formation of nickel manganite with a cubic spinel structure, while N2 physisorption at 77 K enabled determination of the BET specific surface area as 25.3 m2/g and (BJH) mesopore volume as 21.5 m2/g. The material constant (B) of the nanocrystalline nickel manganite fibers applied by drop-casting on test interdigitated electrodes on alumina substrate, dried at room temperature, was determined as 4379 K in the 20–50 °C temperature range and a temperature sensitivity of −4.95%/K at room temperature (25 °C). The change of impedance with relative humidity was monitored at 25 and 50 °C for a relative humidity (RH) change of 40 to 90% in the 42 Hzπ1 MHz frequency range. At 100 Hz and 25 °C, the sensitivity of 327.36 ± 80.12 kΩ/%RH was determined, showing that nickel manganite obtained by electrospinning has potential as a multifunctional material for combined humidity and temperature sensing.
PB  - Basel : MDPI AG
T2  - Sensors
T1  - Electrospun Nickel Manganite (NiMn2O4) Nanocrystalline Fibers for Humidity and Temperature Sensing
SP  - 4357
VL  - 21
IS  - 13
DO  - 10.3390/s21134357
UR  - https://hdl.handle.net/21.15107/rcub_dais_11797
ER  - 
@article{
author = "Dojčinović, Milena P. and Vasiljević, Zorka Ž. and Krstić, Jugoslav B. and Vujančević, Jelena D. and Marković, Smilja and Tadić, Nenad B. and Nikolic, Maria Vesna",
year = "2021",
abstract = "Nickel manganite nanocrystalline fibers were obtained by electrospinning and subsequent calcination at 400 °C. As-spun fibers were characterized by TG/DTA, Scanning Electron Microscopy and FT-IR spectroscopy analysis. X-ray diffraction and FT-IR spectroscopy analysis confirmed the formation of nickel manganite with a cubic spinel structure, while N2 physisorption at 77 K enabled determination of the BET specific surface area as 25.3 m2/g and (BJH) mesopore volume as 21.5 m2/g. The material constant (B) of the nanocrystalline nickel manganite fibers applied by drop-casting on test interdigitated electrodes on alumina substrate, dried at room temperature, was determined as 4379 K in the 20–50 °C temperature range and a temperature sensitivity of −4.95%/K at room temperature (25 °C). The change of impedance with relative humidity was monitored at 25 and 50 °C for a relative humidity (RH) change of 40 to 90% in the 42 Hzπ1 MHz frequency range. At 100 Hz and 25 °C, the sensitivity of 327.36 ± 80.12 kΩ/%RH was determined, showing that nickel manganite obtained by electrospinning has potential as a multifunctional material for combined humidity and temperature sensing.",
publisher = "Basel : MDPI AG",
journal = "Sensors",
title = "Electrospun Nickel Manganite (NiMn2O4) Nanocrystalline Fibers for Humidity and Temperature Sensing",
pages = "4357",
volume = "21",
number = "13",
doi = "10.3390/s21134357",
url = "https://hdl.handle.net/21.15107/rcub_dais_11797"
}
Dojčinović, M. P., Vasiljević, Z. Ž., Krstić, J. B., Vujančević, J. D., Marković, S., Tadić, N. B.,& Nikolic, M. V.. (2021). Electrospun Nickel Manganite (NiMn2O4) Nanocrystalline Fibers for Humidity and Temperature Sensing. in Sensors
Basel : MDPI AG., 21(13), 4357.
https://doi.org/10.3390/s21134357
https://hdl.handle.net/21.15107/rcub_dais_11797
Dojčinović MP, Vasiljević ZŽ, Krstić JB, Vujančević JD, Marković S, Tadić NB, Nikolic MV. Electrospun Nickel Manganite (NiMn2O4) Nanocrystalline Fibers for Humidity and Temperature Sensing. in Sensors. 2021;21(13):4357.
doi:10.3390/s21134357
https://hdl.handle.net/21.15107/rcub_dais_11797 .
Dojčinović, Milena P., Vasiljević, Zorka Ž., Krstić, Jugoslav B., Vujančević, Jelena D., Marković, Smilja, Tadić, Nenad B., Nikolic, Maria Vesna, "Electrospun Nickel Manganite (NiMn2O4) Nanocrystalline Fibers for Humidity and Temperature Sensing" in Sensors, 21, no. 13 (2021):4357,
https://doi.org/10.3390/s21134357 .,
https://hdl.handle.net/21.15107/rcub_dais_11797 .
1
1

Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

Vasiljević, Zorka Ž.; Dojčinović, Milena; Vujančević, Jelena; Janković Častvan, Ivona; Ognjanović, M.; Tadić, N.; Stojadinović, S.; Branković, Goran; Nikolić, Maria Vesna

(Royal Society, 2020)

TY  - JOUR
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Vujančević, Jelena
AU  - Janković Častvan, Ivona
AU  - Ognjanović, M.
AU  - Tadić, N.
AU  - Stojadinović, S.
AU  - Branković, Goran
AU  - Nikolić, Maria Vesna
PY  - 2020
UR  - http://dais.sanu.ac.rs/123456789/9107
AB  - The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.
PB  - Royal Society
T2  - Royal Society Open Science
T1  - Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method
VL  - 7
IS  - 9
DO  - 10.1098/rsos.200708
UR  - https://hdl.handle.net/21.15107/rcub_dais_9107
ER  - 
@article{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena and Vujančević, Jelena and Janković Častvan, Ivona and Ognjanović, M. and Tadić, N. and Stojadinović, S. and Branković, Goran and Nikolić, Maria Vesna",
year = "2020",
abstract = "The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.",
publisher = "Royal Society",
journal = "Royal Society Open Science",
title = "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method",
volume = "7",
number = "9",
doi = "10.1098/rsos.200708",
url = "https://hdl.handle.net/21.15107/rcub_dais_9107"
}
Vasiljević, Z. Ž., Dojčinović, M., Vujančević, J., Janković Častvan, I., Ognjanović, M., Tadić, N., Stojadinović, S., Branković, G.,& Nikolić, M. V.. (2020). Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method. in Royal Society Open Science
Royal Society., 7(9).
https://doi.org/10.1098/rsos.200708
https://hdl.handle.net/21.15107/rcub_dais_9107
Vasiljević ZŽ, Dojčinović M, Vujančević J, Janković Častvan I, Ognjanović M, Tadić N, Stojadinović S, Branković G, Nikolić MV. Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method. in Royal Society Open Science. 2020;7(9).
doi:10.1098/rsos.200708
https://hdl.handle.net/21.15107/rcub_dais_9107 .
Vasiljević, Zorka Ž., Dojčinović, Milena, Vujančević, Jelena, Janković Častvan, Ivona, Ognjanović, M., Tadić, N., Stojadinović, S., Branković, Goran, Nikolić, Maria Vesna, "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method" in Royal Society Open Science, 7, no. 9 (2020),
https://doi.org/10.1098/rsos.200708 .,
https://hdl.handle.net/21.15107/rcub_dais_9107 .
8
5

Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite

Nikolić, Maria Vesna; Vasiljević, Zorka Ž.; Dojčinović, Milena P.; Vujančević, Jelena; Radovanović, Milan

(IEEE, 2020)

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena P.
AU  - Vujančević, Jelena
AU  - Radovanović, Milan
PY  - 2020
UR  - http://dais.sanu.ac.rs/123456789/8965
AB  - This work deals with our continued research of oxide materials for potential application in gas/humidity sensing. We have made thick film samples using iron manganite powder synthesized by a sol-gel combustion method with a net-like structure, by screen printing on alumina substrate with PdAg interdigitated electrodes. The thick film samples were fired at two temperatures 600 and 800°C. The powder morphology was retained and only the organic compounds in the paste were burnt-out at 600°C, while at 800°C the thick film surface morphology was different where grain growth and individual particles can be observed. We measured complex impedance in a temperature and humidity chamber at room temperature (25°C) in the relative humidity range 30 – 90 % and frequency 100 Hz - 1 MHz. The thick film surface morphology has a significant influence on the effect of humidity on complex impedance. The complex impedance of thick films fired at 600°C was high and did not decrease noticeably with increase in relative humidity (RH), except for RH 80 and 90%, while thick film samples fired at 800°C had an overall lower impedance that reduced more noticeably with increase in RH 40–70% and even more for RH 80 and 90%.
PB  - IEEE
C3  - 2020 43rd International Spring Seminar on Electronics Technology (ISSE)
T1  - Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite
SP  - 1
EP  - 5
DO  - 10.1109/ISSE49702.2020.9120967
UR  - https://hdl.handle.net/21.15107/rcub_dais_8965
ER  - 
@conference{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Ž. and Dojčinović, Milena P. and Vujančević, Jelena and Radovanović, Milan",
year = "2020",
abstract = "This work deals with our continued research of oxide materials for potential application in gas/humidity sensing. We have made thick film samples using iron manganite powder synthesized by a sol-gel combustion method with a net-like structure, by screen printing on alumina substrate with PdAg interdigitated electrodes. The thick film samples were fired at two temperatures 600 and 800°C. The powder morphology was retained and only the organic compounds in the paste were burnt-out at 600°C, while at 800°C the thick film surface morphology was different where grain growth and individual particles can be observed. We measured complex impedance in a temperature and humidity chamber at room temperature (25°C) in the relative humidity range 30 – 90 % and frequency 100 Hz - 1 MHz. The thick film surface morphology has a significant influence on the effect of humidity on complex impedance. The complex impedance of thick films fired at 600°C was high and did not decrease noticeably with increase in relative humidity (RH), except for RH 80 and 90%, while thick film samples fired at 800°C had an overall lower impedance that reduced more noticeably with increase in RH 40–70% and even more for RH 80 and 90%.",
publisher = "IEEE",
journal = "2020 43rd International Spring Seminar on Electronics Technology (ISSE)",
title = "Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite",
pages = "1-5",
doi = "10.1109/ISSE49702.2020.9120967",
url = "https://hdl.handle.net/21.15107/rcub_dais_8965"
}
Nikolić, M. V., Vasiljević, Z. Ž., Dojčinović, M. P., Vujančević, J.,& Radovanović, M.. (2020). Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite. in 2020 43rd International Spring Seminar on Electronics Technology (ISSE)
IEEE., 1-5.
https://doi.org/10.1109/ISSE49702.2020.9120967
https://hdl.handle.net/21.15107/rcub_dais_8965
Nikolić MV, Vasiljević ZŽ, Dojčinović MP, Vujančević J, Radovanović M. Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite. in 2020 43rd International Spring Seminar on Electronics Technology (ISSE). 2020;:1-5.
doi:10.1109/ISSE49702.2020.9120967
https://hdl.handle.net/21.15107/rcub_dais_8965 .
Nikolić, Maria Vesna, Vasiljević, Zorka Ž., Dojčinović, Milena P., Vujančević, Jelena, Radovanović, Milan, "Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite" in 2020 43rd International Spring Seminar on Electronics Technology (ISSE) (2020):1-5,
https://doi.org/10.1109/ISSE49702.2020.9120967 .,
https://hdl.handle.net/21.15107/rcub_dais_8965 .

Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite

Nikolić, Maria Vesna; Vasiljević, Zorka Ž.; Dojčinović, Milena; Vujančević, Jelena; Radovanović, Milan

(IEEE, 2020)

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Vujančević, Jelena
AU  - Radovanović, Milan
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/10026
AB  - This work deals with our continued research of oxide materials for potential application in gas/humidity sensing. We have made thick film samples using iron manganite powder synthesized by a sol-gel combustion method with a net-like structure, by screen printing on alumina substrate with PdAg interdigitated electrodes. The thick film samples were fired at two temperatures 600 and 800°C. The powder morphology was retained and only the organic compounds in the paste were burnt-out at 600°C, while at 800°C the thick film surface morphology was different where grain growth and individual particles can be observed. We measured complex impedance in a temperature and humidity chamber at room temperature (25°C) in the relative humidity range 30 – 90 % and frequency 100 Hz - 1 MHz. The thick film surface morphology has a significant influence on the effect of humidity on complex impedance. The complex impedance of thick films fired at 600°C was high and did not decrease noticeably with increase in relative humidity (RH), except for RH 80 and 90%, while thick film samples fired at 800°C had an overall lower impedance that reduced more noticeably with increase in RH 40–70% and even more for RH 80 and 90%.
PB  - IEEE
C3  - 2020 43rd International Spring Seminar on Electronics Technology (ISSE)
T1  - Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite
SP  - 1
EP  - 5
DO  - 10.1109/ISSE49702.2020.9120967
UR  - https://hdl.handle.net/21.15107/rcub_dais_10026
ER  - 
@conference{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Ž. and Dojčinović, Milena and Vujančević, Jelena and Radovanović, Milan",
year = "2020",
abstract = "This work deals with our continued research of oxide materials for potential application in gas/humidity sensing. We have made thick film samples using iron manganite powder synthesized by a sol-gel combustion method with a net-like structure, by screen printing on alumina substrate with PdAg interdigitated electrodes. The thick film samples were fired at two temperatures 600 and 800°C. The powder morphology was retained and only the organic compounds in the paste were burnt-out at 600°C, while at 800°C the thick film surface morphology was different where grain growth and individual particles can be observed. We measured complex impedance in a temperature and humidity chamber at room temperature (25°C) in the relative humidity range 30 – 90 % and frequency 100 Hz - 1 MHz. The thick film surface morphology has a significant influence on the effect of humidity on complex impedance. The complex impedance of thick films fired at 600°C was high and did not decrease noticeably with increase in relative humidity (RH), except for RH 80 and 90%, while thick film samples fired at 800°C had an overall lower impedance that reduced more noticeably with increase in RH 40–70% and even more for RH 80 and 90%.",
publisher = "IEEE",
journal = "2020 43rd International Spring Seminar on Electronics Technology (ISSE)",
title = "Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite",
pages = "1-5",
doi = "10.1109/ISSE49702.2020.9120967",
url = "https://hdl.handle.net/21.15107/rcub_dais_10026"
}
Nikolić, M. V., Vasiljević, Z. Ž., Dojčinović, M., Vujančević, J.,& Radovanović, M.. (2020). Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite. in 2020 43rd International Spring Seminar on Electronics Technology (ISSE)
IEEE., 1-5.
https://doi.org/10.1109/ISSE49702.2020.9120967
https://hdl.handle.net/21.15107/rcub_dais_10026
Nikolić MV, Vasiljević ZŽ, Dojčinović M, Vujančević J, Radovanović M. Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite. in 2020 43rd International Spring Seminar on Electronics Technology (ISSE). 2020;:1-5.
doi:10.1109/ISSE49702.2020.9120967
https://hdl.handle.net/21.15107/rcub_dais_10026 .
Nikolić, Maria Vesna, Vasiljević, Zorka Ž., Dojčinović, Milena, Vujančević, Jelena, Radovanović, Milan, "Impact of Microstructure on Humidity Influence on Complex Impedance of Iron Manganite" in 2020 43rd International Spring Seminar on Electronics Technology (ISSE) (2020):1-5,
https://doi.org/10.1109/ISSE49702.2020.9120967 .,
https://hdl.handle.net/21.15107/rcub_dais_10026 .