TY  - GEN
AU  - Mitrović, Jelena
AU  - Počuča-Nešić, Milica
AU  - Branković, Zorica
AU  - Branković, Goran
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2219
AB  - The influence of dopant concentration and sintering parameters on properties of Sb-doped BaSnO3 ceramics
	Jelena Mitrović1, Milica Počuča-Nešić1, Zorica Branković1, Goran Branković1	
1Institute for Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
In recent years, the modern industry and technology development has focused on non-magnetic, non-inductive, and electroconductive materials that can be used in conditions unfavorable for metals and alloys, such as constant high voltage, current and energy, with a particular emphasis on operating in acidic and humid environments. These conditions could be satisfied using chemically inert and thermally stable ceramic resistors with linear current-voltage (I-U) characteristic and low and almost constant electrical resistivity in the wide temperature range. Barium stannate (BaSnO3, BSO) is perovskite-type oxide with almost ideal cubic crystal structure, good thermal and chemical stability. Undoped BSO exhibits semiconductor behviour, but doping with an appropriate concentration of antimony can lead to changes in the electrical properties of BSO, making its metallic-like conductor. 
In this study, we investigate the influence of antimony concentration and sintering parameters on properties of antimony-doped barium stannate, BaSn1-xSbxO3 (BSSO, x = 0,00; 0,04; 0,06; 0,08 and 0,10) to obtain conductive electroceramic samples with linear current-voltage (I-U) characteristic and constant electrical resistivity in the temperature range of 25 °C to 150 °C. Ceramic samples were obtained by three different sintering techniques conventional, spark plasma and cold sintering.
	XRD analysis confirmed the existence of single-phase cubic BaSnO3 in all conventionally sintered samples at 1600 °C for 3 h, and also in spark plasma sintered samples at 1100 °C for 5 min. However, the spark plasma sintering at 1200 °C for 5 min led to the formation of secondary phase, tetragonal Ba2SnO4 in BSSO samples, whose content is significantly decreased by Sb doping. On the other hand, XRD analysis revealed the presence of unreacted starting components, SnO2 and BaCO3 in cold sintered BaSn0.92Sb0.08O3 sample (310 °C for 5 min, 20 wt.% 1 M acetic acid). The presence of low angle grain boundaries (LAGBs) was observed in conventionally (1600 °C for 3 h) and spark plasma sintered (1200 °C for 5 min) samples with x = 0.08. The results of DC (I-U characteristic) and AC (Impedance spectroscopy) measurements confirmed the semiconducting properties of all BSSO sample, except the spark plasma sintered BaSn0.92Sb0.08O3 (1200 °C for 5 min) sample. Metallic-like behavior of this sample is manifested through the linear I-U characteristic and low electrical resistivity, which remained almost constant in the investigated temperature range, due to the loss of potential barriers at the grain boundary region as a consequence of LAGBs present in BaSn0.92Sb0.08O3 ceramic sample.
T2  - Shanghai Institute of Ceramics, Chinese Academy of Sciences
T1  - The influence of dopant concentration and sintering parameters on properties of Sb-doped BaSnO3 ceramics
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2219
ER  - 

@misc{
author = "Mitrović, Jelena and Počuča-Nešić, Milica and Branković, Zorica and Branković, Goran",
year = "2023",
abstract = "The influence of dopant concentration and sintering parameters on properties of Sb-doped BaSnO3 ceramics
	Jelena Mitrović1, Milica Počuča-Nešić1, Zorica Branković1, Goran Branković1	
1Institute for Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
In recent years, the modern industry and technology development has focused on non-magnetic, non-inductive, and electroconductive materials that can be used in conditions unfavorable for metals and alloys, such as constant high voltage, current and energy, with a particular emphasis on operating in acidic and humid environments. These conditions could be satisfied using chemically inert and thermally stable ceramic resistors with linear current-voltage (I-U) characteristic and low and almost constant electrical resistivity in the wide temperature range. Barium stannate (BaSnO3, BSO) is perovskite-type oxide with almost ideal cubic crystal structure, good thermal and chemical stability. Undoped BSO exhibits semiconductor behviour, but doping with an appropriate concentration of antimony can lead to changes in the electrical properties of BSO, making its metallic-like conductor. 
In this study, we investigate the influence of antimony concentration and sintering parameters on properties of antimony-doped barium stannate, BaSn1-xSbxO3 (BSSO, x = 0,00; 0,04; 0,06; 0,08 and 0,10) to obtain conductive electroceramic samples with linear current-voltage (I-U) characteristic and constant electrical resistivity in the temperature range of 25 °C to 150 °C. Ceramic samples were obtained by three different sintering techniques conventional, spark plasma and cold sintering.
	XRD analysis confirmed the existence of single-phase cubic BaSnO3 in all conventionally sintered samples at 1600 °C for 3 h, and also in spark plasma sintered samples at 1100 °C for 5 min. However, the spark plasma sintering at 1200 °C for 5 min led to the formation of secondary phase, tetragonal Ba2SnO4 in BSSO samples, whose content is significantly decreased by Sb doping. On the other hand, XRD analysis revealed the presence of unreacted starting components, SnO2 and BaCO3 in cold sintered BaSn0.92Sb0.08O3 sample (310 °C for 5 min, 20 wt.% 1 M acetic acid). The presence of low angle grain boundaries (LAGBs) was observed in conventionally (1600 °C for 3 h) and spark plasma sintered (1200 °C for 5 min) samples with x = 0.08. The results of DC (I-U characteristic) and AC (Impedance spectroscopy) measurements confirmed the semiconducting properties of all BSSO sample, except the spark plasma sintered BaSn0.92Sb0.08O3 (1200 °C for 5 min) sample. Metallic-like behavior of this sample is manifested through the linear I-U characteristic and low electrical resistivity, which remained almost constant in the investigated temperature range, due to the loss of potential barriers at the grain boundary region as a consequence of LAGBs present in BaSn0.92Sb0.08O3 ceramic sample.",
journal = "Shanghai Institute of Ceramics, Chinese Academy of Sciences",
title = "The influence of dopant concentration and sintering parameters on properties of Sb-doped BaSnO3 ceramics",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2219"
}

Mitrović, J., Počuča-Nešić, M., Branković, Z.,& Branković, G.. (2023). The influence of dopant concentration and sintering parameters on properties of Sb-doped BaSnO3 ceramics. in Shanghai Institute of Ceramics, Chinese Academy of Sciences.
https://hdl.handle.net/21.15107/rcub_rimsi_2219

Mitrović J, Počuča-Nešić M, Branković Z, Branković G. The influence of dopant concentration and sintering parameters on properties of Sb-doped BaSnO3 ceramics. in Shanghai Institute of Ceramics, Chinese Academy of Sciences. 2023;.
https://hdl.handle.net/21.15107/rcub_rimsi_2219 .

Mitrović, Jelena, Počuča-Nešić, Milica, Branković, Zorica, Branković, Goran, "The influence of dopant concentration and sintering parameters on properties of Sb-doped BaSnO3 ceramics" in Shanghai Institute of Ceramics, Chinese Academy of Sciences (2023),
https://hdl.handle.net/21.15107/rcub_rimsi_2219 .

TY  - GEN
AU  - Mitrović, Jelena
AU  - Počuča-Nešić, Milica
AU  - Malešević, Aleksandar
AU  - Branković, Zorica
AU  - Vojisavljević, Katarina
AU  - Savić, Slavica
AU  - Ribić, Vesna
AU  - Drev, Sandra
AU  - Podlogar, Matejka
AU  - Bernik, Slavko
AU  - Rapljenović, Željko
AU  - Ivek, Tomislav
AU  - Branković, Goran
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2085
AB  - The non-magnetic, non-inductive electroconductive materials with linear current-voltage characteristic and low and almost constant electrical resistivity in the wide temperature range could be used in conditions unfavorable for metals and alloys. Particular emphasis is placed on the performance and endurance of these materials in conditions at constant high voltage, current, and energy, as well as operating in acidic and humid environmental conditions.
The aim of this work was to investigate the influence of antimony concentration and sintering parameters on the structure, microstructure, and electrical properties of antimony-doped barium stannate, BaSn1-xSbxO3 (BSSO, x = 0,00; 0,04; 0,06; 0,08 and 0,10) to obtain conductive electroceramic samples with linear current-voltage (I- U) characteristics and low electrical resistivity. For this purpose three different sintering techniques were used: conventional, spark plasma and cold sintering.
According to the X-ray diffraction (XRD) analysis, single-phase ceramic mater- ials with cubic BaSnO3 structure were obtained by conventional sintering at 1600 °C for 3 h and spark plasma sintering at 1100 °C for 5 min. Raising the spark plasma sintering temperature to 1200 °C induced the formation of Ba-rich secondary phase, Ba2SnO4. XRD analysis confirmed the presence of unreacted SnO2 and BaCO3 in cold sintered BaSn0.92Sb0.08O3 sample (310 °C for 5 min, 20 wt.% 1 M acetic acid). Scanning electron microscopy (SEM) indicates a significant decrease in grain size upon doping, regardless of the sintering technique. High-resolution transmission electron microscopy (HRTEM) revealed the presence of low angle grain boundaries (LAGBs) in conventionally and spark plasma sintered (1200 °C for 5 min) samples with x = 0.08. The results of electrical measurements confirmed the semiconducting properties of all BSSO, except the spark plasma sintered BaSn0.92Sb0.08O3 (1200 °C for 5 min) sample. This sample showed linear current-voltage characteristic, the lowest and almost constant electrical resistivity in the temperature range of 25–150
°C resulting from the loss of potential barriers at grain boundaries due to the large fraction of LAGBs present in BaSn0.92Sb0.08O3 ceramic sample.
PB  - University of Belgrade, Institute for Multidisciplinary Research
T2  - 7th Conference of the Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia
T1  - Correlation between the microstructure and electrical properties of Sb-doped BaSnO3 ceramics
SP  - 36
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2085
ER  - 

@misc{
author = "Mitrović, Jelena and Počuča-Nešić, Milica and Malešević, Aleksandar and Branković, Zorica and Vojisavljević, Katarina and Savić, Slavica and Ribić, Vesna and Drev, Sandra and Podlogar, Matejka and Bernik, Slavko and Rapljenović, Željko and Ivek, Tomislav and Branković, Goran",
year = "2023",
abstract = "The non-magnetic, non-inductive electroconductive materials with linear current-voltage characteristic and low and almost constant electrical resistivity in the wide temperature range could be used in conditions unfavorable for metals and alloys. Particular emphasis is placed on the performance and endurance of these materials in conditions at constant high voltage, current, and energy, as well as operating in acidic and humid environmental conditions.
The aim of this work was to investigate the influence of antimony concentration and sintering parameters on the structure, microstructure, and electrical properties of antimony-doped barium stannate, BaSn1-xSbxO3 (BSSO, x = 0,00; 0,04; 0,06; 0,08 and 0,10) to obtain conductive electroceramic samples with linear current-voltage (I- U) characteristics and low electrical resistivity. For this purpose three different sintering techniques were used: conventional, spark plasma and cold sintering.
According to the X-ray diffraction (XRD) analysis, single-phase ceramic mater- ials with cubic BaSnO3 structure were obtained by conventional sintering at 1600 °C for 3 h and spark plasma sintering at 1100 °C for 5 min. Raising the spark plasma sintering temperature to 1200 °C induced the formation of Ba-rich secondary phase, Ba2SnO4. XRD analysis confirmed the presence of unreacted SnO2 and BaCO3 in cold sintered BaSn0.92Sb0.08O3 sample (310 °C for 5 min, 20 wt.% 1 M acetic acid). Scanning electron microscopy (SEM) indicates a significant decrease in grain size upon doping, regardless of the sintering technique. High-resolution transmission electron microscopy (HRTEM) revealed the presence of low angle grain boundaries (LAGBs) in conventionally and spark plasma sintered (1200 °C for 5 min) samples with x = 0.08. The results of electrical measurements confirmed the semiconducting properties of all BSSO, except the spark plasma sintered BaSn0.92Sb0.08O3 (1200 °C for 5 min) sample. This sample showed linear current-voltage characteristic, the lowest and almost constant electrical resistivity in the temperature range of 25–150
°C resulting from the loss of potential barriers at grain boundaries due to the large fraction of LAGBs present in BaSn0.92Sb0.08O3 ceramic sample.",
publisher = "University of Belgrade, Institute for Multidisciplinary Research",
journal = "7th Conference of the Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia",
title = "Correlation between the microstructure and electrical properties of Sb-doped BaSnO3 ceramics",
pages = "36",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2085"
}

Mitrović, J., Počuča-Nešić, M., Malešević, A., Branković, Z., Vojisavljević, K., Savić, S., Ribić, V., Drev, S., Podlogar, M., Bernik, S., Rapljenović, Ž., Ivek, T.,& Branković, G.. (2023). Correlation between the microstructure and electrical properties of Sb-doped BaSnO3 ceramics. in 7th Conference of the Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia
University of Belgrade, Institute for Multidisciplinary Research., 36.
https://hdl.handle.net/21.15107/rcub_rimsi_2085

Mitrović J, Počuča-Nešić M, Malešević A, Branković Z, Vojisavljević K, Savić S, Ribić V, Drev S, Podlogar M, Bernik S, Rapljenović Ž, Ivek T, Branković G. Correlation between the microstructure and electrical properties of Sb-doped BaSnO3 ceramics. in 7th Conference of the Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia. 2023;:36.
https://hdl.handle.net/21.15107/rcub_rimsi_2085 .

Mitrović, Jelena, Počuča-Nešić, Milica, Malešević, Aleksandar, Branković, Zorica, Vojisavljević, Katarina, Savić, Slavica, Ribić, Vesna, Drev, Sandra, Podlogar, Matejka, Bernik, Slavko, Rapljenović, Željko, Ivek, Tomislav, Branković, Goran, "Correlation between the microstructure and electrical properties of Sb-doped BaSnO3 ceramics" in 7th Conference of the Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia (2023):36,
https://hdl.handle.net/21.15107/rcub_rimsi_2085 .

TY  - CONF
AU  - Krnjajić, Slobodan
AU  - Radojković, Aleksandar
AU  - Radović, Marko
AU  - Kostić, Igor
AU  - Kostić, Miroslav
AU  - Mitrović, Jelena
AU  - Branković, Zorica
AU  - Branković, Goran
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2858
AB  - Insecticide effect of ZnO, TiO2, AL2O3 and zeolite powders were studied on bean weevil (Achanthoscelides obtectus Say, 1831). Mortality of both male and female adults was significantly higher for zeolite and Al2O3 powders than ZnO and TiO2, while females were less suspectibile than male. SEM analysis of the insects treated with Al2O3 revealet that disability and mortality of bean weevils can be related to degree of powder covergate of the insects exosceleton. All powders showed similar effect to development of F1 progeny with reduction in larvae number over 50%, and can be considered for use in organic production.
PB  - University of Belgrade-Technical Faculty of Bor, Srbija
C3  - Proceedings XXIII International Conference Ecological Truth
T1  - Insecticide effects of non-toxic inorganic powders against bean weevil (Acanthoscelides obtectus)
EP  - 486
SP  - 480
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2858
ER  - 

@conference{
author = "Krnjajić, Slobodan and Radojković, Aleksandar and Radović, Marko and Kostić, Igor and Kostić, Miroslav and Mitrović, Jelena and Branković, Zorica and Branković, Goran",
year = "2015",
abstract = "Insecticide effect of ZnO, TiO2, AL2O3 and zeolite powders were studied on bean weevil (Achanthoscelides obtectus Say, 1831). Mortality of both male and female adults was significantly higher for zeolite and Al2O3 powders than ZnO and TiO2, while females were less suspectibile than male. SEM analysis of the insects treated with Al2O3 revealet that disability and mortality of bean weevils can be related to degree of powder covergate of the insects exosceleton. All powders showed similar effect to development of F1 progeny with reduction in larvae number over 50%, and can be considered for use in organic production.",
publisher = "University of Belgrade-Technical Faculty of Bor, Srbija",
journal = "Proceedings XXIII International Conference Ecological Truth",
title = "Insecticide effects of non-toxic inorganic powders against bean weevil (Acanthoscelides obtectus)",
pages = "486-480",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2858"
}

Krnjajić, S., Radojković, A., Radović, M., Kostić, I., Kostić, M., Mitrović, J., Branković, Z.,& Branković, G.. (2015). Insecticide effects of non-toxic inorganic powders against bean weevil (Acanthoscelides obtectus). in Proceedings XXIII International Conference Ecological Truth
University of Belgrade-Technical Faculty of Bor, Srbija., 13, 480-486.
https://hdl.handle.net/21.15107/rcub_rimsi_2858

Krnjajić S, Radojković A, Radović M, Kostić I, Kostić M, Mitrović J, Branković Z, Branković G. Insecticide effects of non-toxic inorganic powders against bean weevil (Acanthoscelides obtectus). in Proceedings XXIII International Conference Ecological Truth. 2015;13:480-486.
https://hdl.handle.net/21.15107/rcub_rimsi_2858 .

Krnjajić, Slobodan, Radojković, Aleksandar, Radović, Marko, Kostić, Igor, Kostić, Miroslav, Mitrović, Jelena, Branković, Zorica, Branković, Goran, "Insecticide effects of non-toxic inorganic powders against bean weevil (Acanthoscelides obtectus)" in Proceedings XXIII International Conference Ecological Truth, 13 (2015):480-486,
https://hdl.handle.net/21.15107/rcub_rimsi_2858 .

TY  - CONF
AU  - Kostić, Igor
AU  - Krnjajić, Slobodan
AU  - Radojković, Aleksandar
AU  - Radović, Marko
AU  - Savić, Slavica M.
AU  - Kostić, Miroslav
AU  - Mitrović, Jelena
AU  - Branković, Zorica
AU  - Branković, Goran
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2744
AB  - Alumina powders were obtained by auto combustion method and calcined for 1 h at
temperatures ranging from 1000ºC to 1200ºC. X-ray powder diffraction analysis revealed an
overwhelming presence of γ–Al2O3 for the powder calcined at 1000ºC, while at 1200ºC only
the presence of α–Al2O3 was detected. Insecticide properties of these powders were
investigated on bean weevil (Acanthoscelides obtectus Say). Mortality of treated and
untreated male and female adults was checked in a period of 7 days. The powder calcined at
1200ºC was the most efficient, and 100% mortality of both male and female insects were
reached after 7 days of exposure. It was also observed that insecticide efficiency increased
with the increase of α–Al2O3 phase present in the powders and the female insects were less
susceptible to the powders’ toxicity in general. Scanning electron microscope analysis of the
treated adults with Al2O3 indicated that mortality of bean weevils can be related to adsorption
of the powders onto their exoskeleton. Development of F1 progeny was similar for all the
powders and the number of hatched larvae was significantly reduced in comparison with the
untreated seeds, while the percentage of damaged seeds dropped from 70% to 15%. These
results suggest that relatively cheap and non-toxic α–Al2O3 powders can be considered for use
in pest control, especially in organic seed production
PB  - 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina
C3  - 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina
T1  - Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say)
EP  - 948
SP  - 943
VL  - 6
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2744
ER  - 

@conference{
author = "Kostić, Igor and Krnjajić, Slobodan and Radojković, Aleksandar and Radović, Marko and Savić, Slavica M. and Kostić, Miroslav and Mitrović, Jelena and Branković, Zorica and Branković, Goran",
year = "2015",
abstract = "Alumina powders were obtained by auto combustion method and calcined for 1 h at
temperatures ranging from 1000ºC to 1200ºC. X-ray powder diffraction analysis revealed an
overwhelming presence of γ–Al2O3 for the powder calcined at 1000ºC, while at 1200ºC only
the presence of α–Al2O3 was detected. Insecticide properties of these powders were
investigated on bean weevil (Acanthoscelides obtectus Say). Mortality of treated and
untreated male and female adults was checked in a period of 7 days. The powder calcined at
1200ºC was the most efficient, and 100% mortality of both male and female insects were
reached after 7 days of exposure. It was also observed that insecticide efficiency increased
with the increase of α–Al2O3 phase present in the powders and the female insects were less
susceptible to the powders’ toxicity in general. Scanning electron microscope analysis of the
treated adults with Al2O3 indicated that mortality of bean weevils can be related to adsorption
of the powders onto their exoskeleton. Development of F1 progeny was similar for all the
powders and the number of hatched larvae was significantly reduced in comparison with the
untreated seeds, while the percentage of damaged seeds dropped from 70% to 15%. These
results suggest that relatively cheap and non-toxic α–Al2O3 powders can be considered for use
in pest control, especially in organic seed production",
publisher = "6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina",
journal = "6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina",
title = "Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say)",
pages = "948-943",
volume = "6",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2744"
}

Kostić, I., Krnjajić, S., Radojković, A., Radović, M., Savić, S. M., Kostić, M., Mitrović, J., Branković, Z.,& Branković, G.. (2015). Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say). in 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina
6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina., 6, 943-948.
https://hdl.handle.net/21.15107/rcub_rimsi_2744

Kostić I, Krnjajić S, Radojković A, Radović M, Savić SM, Kostić M, Mitrović J, Branković Z, Branković G. Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say). in 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina. 2015;6:943-948.
https://hdl.handle.net/21.15107/rcub_rimsi_2744 .

Kostić, Igor, Krnjajić, Slobodan, Radojković, Aleksandar, Radović, Marko, Savić, Slavica M., Kostić, Miroslav, Mitrović, Jelena, Branković, Zorica, Branković, Goran, "Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say)" in 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina, 6 (2015):943-948,
https://hdl.handle.net/21.15107/rcub_rimsi_2744 .

TY  - CONF
AU  - Radović, Marko
AU  - Radojković, Aleksandar
AU  - Kostić, Igor
AU  - Mitrović, Jelena
AU  - Krnjajić, Slobodan
AU  - Kostić, Miodrag
AU  - Branković, Zorica
AU  - Branković, Goran
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2362
AB  - Alumina powders were synthesized by citrate/nitrate autocombustion method with
different citrate/nitrate molar ratios (0.5, 0.8 and 1.2). XRD analysis of the powders
calcined at 1200 °C for 1 h showed only the presence of α–Al2O3 phase. Particle size of
the powders determined by SEM analysis varied from nano- and submicron size of
several µm. The powders were mixed with grains of bean to examine their insecticide
effect against bean weevil (Acanthoscelides obtectus Say, 1831). Mortality of insects
after seven days of exposure was the highest for the powder synthesized at 1.2 molar
ratio, which contained the highest portion of submicron particles. This suggested that
lager amount of citric acid could prevent higher degree of particles agglomeration.
Mortality cause of insects is assumed to be related to the degree of powder coverage of
the insects’ exoskeleton. The same powder also provided the best efficiency in
suppressing the emerge of F1 generation and seed protection even at lower
concentrations.
PB  - Univerzitet u Novom Sadu, Tehnološki fakultet
C3  - 11th Conference for Young Scientists in Ceramics (SM- 2015)
T1  - Synthesis of Alumina Powders and their Insecticidal Effect Against Acanthoscelides Obtectus Say
SP  - 54
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2362
ER  - 

@conference{
author = "Radović, Marko and Radojković, Aleksandar and Kostić, Igor and Mitrović, Jelena and Krnjajić, Slobodan and Kostić, Miodrag and Branković, Zorica and Branković, Goran",
year = "2015",
abstract = "Alumina powders were synthesized by citrate/nitrate autocombustion method with
different citrate/nitrate molar ratios (0.5, 0.8 and 1.2). XRD analysis of the powders
calcined at 1200 °C for 1 h showed only the presence of α–Al2O3 phase. Particle size of
the powders determined by SEM analysis varied from nano- and submicron size of
several µm. The powders were mixed with grains of bean to examine their insecticide
effect against bean weevil (Acanthoscelides obtectus Say, 1831). Mortality of insects
after seven days of exposure was the highest for the powder synthesized at 1.2 molar
ratio, which contained the highest portion of submicron particles. This suggested that
lager amount of citric acid could prevent higher degree of particles agglomeration.
Mortality cause of insects is assumed to be related to the degree of powder coverage of
the insects’ exoskeleton. The same powder also provided the best efficiency in
suppressing the emerge of F1 generation and seed protection even at lower
concentrations.",
publisher = "Univerzitet u Novom Sadu, Tehnološki fakultet",
journal = "11th Conference for Young Scientists in Ceramics (SM- 2015)",
title = "Synthesis of Alumina Powders and their Insecticidal Effect Against Acanthoscelides Obtectus Say",
pages = "54",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2362"
}

Radović, M., Radojković, A., Kostić, I., Mitrović, J., Krnjajić, S., Kostić, M., Branković, Z.,& Branković, G.. (2015). Synthesis of Alumina Powders and their Insecticidal Effect Against Acanthoscelides Obtectus Say. in 11th Conference for Young Scientists in Ceramics (SM- 2015)
Univerzitet u Novom Sadu, Tehnološki fakultet., 54.
https://hdl.handle.net/21.15107/rcub_rimsi_2362

Radović M, Radojković A, Kostić I, Mitrović J, Krnjajić S, Kostić M, Branković Z, Branković G. Synthesis of Alumina Powders and their Insecticidal Effect Against Acanthoscelides Obtectus Say. in 11th Conference for Young Scientists in Ceramics (SM- 2015). 2015;:54.
https://hdl.handle.net/21.15107/rcub_rimsi_2362 .

Radović, Marko, Radojković, Aleksandar, Kostić, Igor, Mitrović, Jelena, Krnjajić, Slobodan, Kostić, Miodrag, Branković, Zorica, Branković, Goran, "Synthesis of Alumina Powders and their Insecticidal Effect Against Acanthoscelides Obtectus Say" in 11th Conference for Young Scientists in Ceramics (SM- 2015) (2015):54,
https://hdl.handle.net/21.15107/rcub_rimsi_2362 .

TY  - CONF
AU  - Radojković, Aleksandar
AU  - Radović, Marko
AU  - Krnjajić, Slobodan
AU  - Kostić, Igor
AU  - Mitrović, Jelena
AU  - Branković, Zorica
AU  - Branković, Goran
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2336
AB  - Alumina powders synthesized by combustion method were applied on
uninfested grains of bean to examine their insecticide effect against bean weevil
(Acanthoscelides obtectus). Effects of pH value (6, 8 and 10) of the precursor
solution, as well as citric/nitric molar ratio (0.5, 0.8 and 1.2) on the powder
properties were observed. XRD analysis of the samples calcined at 1200 ºC for 1 h
showed only the presence of α–Al2O3 phase. SEM analysis revealed difference
between the samples in respect to particle size, which varied from nano- and
submicron size to characteristic rectangular particles of several µm and larger. The
powder obtained from the solution with the pH value of 10 had the highest content
of submicron and nanosized particles. Mortality rate of both male and female insects
after seven days of exposure was the highest right for this sample, indicating that the
particle size has the greatest influence on insecticide properties of alumina powders.
Thus, by increasing the pH of the precursor solution it is possible to prevent higher
degree of particles agglomeration. The lowest insecticide efficiency of the powder
synthesized at pH = 6 can be prescribed to a weak chelating effect of the citric acid
that allowed higher coarsening rate of the particles. When it comes to citric/nitric
molar ratio at pH = 8, it had no significant effect on mortality rates, which were
higher for male insects in general, while a slight efficiency trend was observed
towards fuel lean region, i.e. when the ratio was ≤ 0.8.
PB  - Društvo za keramičke materijale Srbije
C3  - 3rd Conference of the Serbian Society for Ceramic Materials
T1  - INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS
SP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2336
ER  - 

@conference{
author = "Radojković, Aleksandar and Radović, Marko and Krnjajić, Slobodan and Kostić, Igor and Mitrović, Jelena and Branković, Zorica and Branković, Goran",
year = "2015",
abstract = "Alumina powders synthesized by combustion method were applied on
uninfested grains of bean to examine their insecticide effect against bean weevil
(Acanthoscelides obtectus). Effects of pH value (6, 8 and 10) of the precursor
solution, as well as citric/nitric molar ratio (0.5, 0.8 and 1.2) on the powder
properties were observed. XRD analysis of the samples calcined at 1200 ºC for 1 h
showed only the presence of α–Al2O3 phase. SEM analysis revealed difference
between the samples in respect to particle size, which varied from nano- and
submicron size to characteristic rectangular particles of several µm and larger. The
powder obtained from the solution with the pH value of 10 had the highest content
of submicron and nanosized particles. Mortality rate of both male and female insects
after seven days of exposure was the highest right for this sample, indicating that the
particle size has the greatest influence on insecticide properties of alumina powders.
Thus, by increasing the pH of the precursor solution it is possible to prevent higher
degree of particles agglomeration. The lowest insecticide efficiency of the powder
synthesized at pH = 6 can be prescribed to a weak chelating effect of the citric acid
that allowed higher coarsening rate of the particles. When it comes to citric/nitric
molar ratio at pH = 8, it had no significant effect on mortality rates, which were
higher for male insects in general, while a slight efficiency trend was observed
towards fuel lean region, i.e. when the ratio was ≤ 0.8.",
publisher = "Društvo za keramičke materijale Srbije",
journal = "3rd Conference of the Serbian Society for Ceramic Materials",
title = "INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS",
pages = "76",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2336"
}

Radojković, A., Radović, M., Krnjajić, S., Kostić, I., Mitrović, J., Branković, Z.,& Branković, G.. (2015). INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS. in 3rd Conference of the Serbian Society for Ceramic Materials
Društvo za keramičke materijale Srbije., 76.
https://hdl.handle.net/21.15107/rcub_rimsi_2336

Radojković A, Radović M, Krnjajić S, Kostić I, Mitrović J, Branković Z, Branković G. INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS. in 3rd Conference of the Serbian Society for Ceramic Materials. 2015;:76.
https://hdl.handle.net/21.15107/rcub_rimsi_2336 .

Radojković, Aleksandar, Radović, Marko, Krnjajić, Slobodan, Kostić, Igor, Mitrović, Jelena, Branković, Zorica, Branković, Goran, "INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS" in 3rd Conference of the Serbian Society for Ceramic Materials (2015):76,
https://hdl.handle.net/21.15107/rcub_rimsi_2336 .

TY  - CONF
AU  - Stanisavljević, Ljubiša
AU  - Mitrović, Jelena
AU  - Kostić, Igor
AU  - Krnjajić, Slobodan
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2762
AB  - Sporedno delovanje pesticida na korisne organizme je do sada najviše
prouĉavano na medonosnoj pĉeli (Apis mellifera L.), za koju postoji i zvaniĉna EPPO
(European and Mediterranean Plant Protection Organization) metoda (EPPO 170 (4)).
Poslednjih godina prilikom registracije pesticida u svetu se sve više uzimaju u
obzir i njihovi sporedni efekti i na druge korisne organizme (oprašivaĉi, predatori,
parazitoidi, i dr.). Jedna od pĉela efikasnih oprašivaĉa voćnjaka kojoj se u svetu sve više
posvećuje paţnja je vrsta Osmia cornuta Latr. Kako se ona poslednjih godina sve više
uzgaja i koristi kao oprašivaĉ u voćarstvu, neophodno je i utvrditi sporedne efekte
delovanja pesticida na njih sa ciljem njihove uspešne primene kao oprašivaĉa.
PB  - Entomološko društvo Srbije, Kladovo, Srbija
C3  - X Simpozijum entomologa Srbije 2015
T1  - Laboratorijski test kontaktne toksičnosti pesticida na pčelama voćnjaka, Osmia cornuta (Hymneoptera: Megachilidae)
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2762
ER  - 

@conference{
author = "Stanisavljević, Ljubiša and Mitrović, Jelena and Kostić, Igor and Krnjajić, Slobodan",
year = "2015",
abstract = "Sporedno delovanje pesticida na korisne organizme je do sada najviše
prouĉavano na medonosnoj pĉeli (Apis mellifera L.), za koju postoji i zvaniĉna EPPO
(European and Mediterranean Plant Protection Organization) metoda (EPPO 170 (4)).
Poslednjih godina prilikom registracije pesticida u svetu se sve više uzimaju u
obzir i njihovi sporedni efekti i na druge korisne organizme (oprašivaĉi, predatori,
parazitoidi, i dr.). Jedna od pĉela efikasnih oprašivaĉa voćnjaka kojoj se u svetu sve više
posvećuje paţnja je vrsta Osmia cornuta Latr. Kako se ona poslednjih godina sve više
uzgaja i koristi kao oprašivaĉ u voćarstvu, neophodno je i utvrditi sporedne efekte
delovanja pesticida na njih sa ciljem njihove uspešne primene kao oprašivaĉa.",
publisher = "Entomološko društvo Srbije, Kladovo, Srbija",
journal = "X Simpozijum entomologa Srbije 2015",
title = "Laboratorijski test kontaktne toksičnosti pesticida na pčelama voćnjaka, Osmia cornuta (Hymneoptera: Megachilidae)",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2762"
}

Stanisavljević, L., Mitrović, J., Kostić, I.,& Krnjajić, S.. (2015). Laboratorijski test kontaktne toksičnosti pesticida na pčelama voćnjaka, Osmia cornuta (Hymneoptera: Megachilidae). in X Simpozijum entomologa Srbije 2015
Entomološko društvo Srbije, Kladovo, Srbija., 10.
https://hdl.handle.net/21.15107/rcub_rimsi_2762

Stanisavljević L, Mitrović J, Kostić I, Krnjajić S. Laboratorijski test kontaktne toksičnosti pesticida na pčelama voćnjaka, Osmia cornuta (Hymneoptera: Megachilidae). in X Simpozijum entomologa Srbije 2015. 2015;10.
https://hdl.handle.net/21.15107/rcub_rimsi_2762 .

Stanisavljević, Ljubiša, Mitrović, Jelena, Kostić, Igor, Krnjajić, Slobodan, "Laboratorijski test kontaktne toksičnosti pesticida na pčelama voćnjaka, Osmia cornuta (Hymneoptera: Megachilidae)" in X Simpozijum entomologa Srbije 2015, 10 (2015),
https://hdl.handle.net/21.15107/rcub_rimsi_2762 .