TY  - CONF
AU  - Krsmanović, Miomir
AU  - Popović, Aleksandar
AU  - Radovanović, Željko
AU  - Marković, Smilja
AU  - Omerašević, Mia
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15638
AB  - Environmental pollution is increasing day by day due to industrial activities. Heavy metals are pollutants of special concern due to their toxicity, persistence, and bioaccumulation in nature. Nickel is a heavy metal that is mostly used in industries because of its anticorrosion behavior. As a consequence, nickel ions are present in the wastewater from mining, electroplating, battery manufacturing and metal finishing industries. Nickel ions are nonbiodegradable, and as such, they are present in surface water. Their high concentrations can have a dangerous impact on human health and aquatic life. In this work, a promising method for the removal of Ni ions from wastewater and their incorporation into a stable crystal structure was described. Ni-exchanged form of LTA zeolite was prepared by the standard procedure of ion exchange. After the ion exchange, powder samples were heated at temperatures of 900 to 1300 ºC in order to obtain a stable crystal structure of Ni-spinel, NiAl2O4. XRF analysis was used to study ion exchange efficiency. Characterization of raw as well as thermally treated powder samples of Ni-exchanged LTA zeolite was conducted by XRPD, DTA/TG, FT-IR and SEM analysis.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia
T1  - Immobilization of nickel ions into stable crystal structures as a promising way for their removal from wastewater
SP  - 29
EP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_dais_15638
ER  - 

@conference{
author = "Krsmanović, Miomir and Popović, Aleksandar and Radovanović, Željko and Marković, Smilja and Omerašević, Mia",
year = "2023",
abstract = "Environmental pollution is increasing day by day due to industrial activities. Heavy metals are pollutants of special concern due to their toxicity, persistence, and bioaccumulation in nature. Nickel is a heavy metal that is mostly used in industries because of its anticorrosion behavior. As a consequence, nickel ions are present in the wastewater from mining, electroplating, battery manufacturing and metal finishing industries. Nickel ions are nonbiodegradable, and as such, they are present in surface water. Their high concentrations can have a dangerous impact on human health and aquatic life. In this work, a promising method for the removal of Ni ions from wastewater and their incorporation into a stable crystal structure was described. Ni-exchanged form of LTA zeolite was prepared by the standard procedure of ion exchange. After the ion exchange, powder samples were heated at temperatures of 900 to 1300 ºC in order to obtain a stable crystal structure of Ni-spinel, NiAl2O4. XRF analysis was used to study ion exchange efficiency. Characterization of raw as well as thermally treated powder samples of Ni-exchanged LTA zeolite was conducted by XRPD, DTA/TG, FT-IR and SEM analysis.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia",
title = "Immobilization of nickel ions into stable crystal structures as a promising way for their removal from wastewater",
pages = "29-29",
url = "https://hdl.handle.net/21.15107/rcub_dais_15638"
}

Krsmanović, M., Popović, A., Radovanović, Ž., Marković, S.,& Omerašević, M.. (2023). Immobilization of nickel ions into stable crystal structures as a promising way for their removal from wastewater. in Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 29-29.
https://hdl.handle.net/21.15107/rcub_dais_15638

Krsmanović M, Popović A, Radovanović Ž, Marković S, Omerašević M. Immobilization of nickel ions into stable crystal structures as a promising way for their removal from wastewater. in Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia. 2023;:29-29.
https://hdl.handle.net/21.15107/rcub_dais_15638 .

Krsmanović, Miomir, Popović, Aleksandar, Radovanović, Željko, Marković, Smilja, Omerašević, Mia, "Immobilization of nickel ions into stable crystal structures as a promising way for their removal from wastewater" in Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia (2023):29-29,
https://hdl.handle.net/21.15107/rcub_dais_15638 .

TY  - JOUR
AU  - Veljović, Đorđe
AU  - Matić, Tamara
AU  - Stamenić, Tanja
AU  - Kojić, Vesna
AU  - Dimitrijević Branković, Suzana
AU  - Lukić, Miodrag J.
AU  - Jevtić, Sanja
AU  - Radovanović, Željko
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0272884219320413
UR  - https://dais.sanu.ac.rs/123456789/6948
AB  - The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.
PB  - Elsevier
T2  - Ceramics International
T1  - Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity
SP  - 22029
SP  - 22039
VL  - 45
IS  - 17, Part A
DO  - 10.1016/j.ceramint.2019.07.219
UR  - https://hdl.handle.net/21.15107/rcub_dais_6948
ER  - 

@article{
author = "Veljović, Đorđe and Matić, Tamara and Stamenić, Tanja and Kojić, Vesna and Dimitrijević Branković, Suzana and Lukić, Miodrag J. and Jevtić, Sanja and Radovanović, Željko and Petrović, Rada and Janaćković, Đorđe",
year = "2019",
abstract = "The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity",
pages = "22029-22039",
volume = "45",
number = "17, Part A",
doi = "10.1016/j.ceramint.2019.07.219",
url = "https://hdl.handle.net/21.15107/rcub_dais_6948"
}

Veljović, Đ., Matić, T., Stamenić, T., Kojić, V., Dimitrijević Branković, S., Lukić, M. J., Jevtić, S., Radovanović, Ž., Petrović, R.,& Janaćković, Đ.. (2019). Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International
Elsevier., 45(17, Part A), 22029.
https://doi.org/10.1016/j.ceramint.2019.07.219
https://hdl.handle.net/21.15107/rcub_dais_6948

Veljović Đ, Matić T, Stamenić T, Kojić V, Dimitrijević Branković S, Lukić MJ, Jevtić S, Radovanović Ž, Petrović R, Janaćković Đ. Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International. 2019;45(17, Part A):22029.
doi:10.1016/j.ceramint.2019.07.219
https://hdl.handle.net/21.15107/rcub_dais_6948 .

Veljović, Đorđe, Matić, Tamara, Stamenić, Tanja, Kojić, Vesna, Dimitrijević Branković, Suzana, Lukić, Miodrag J., Jevtić, Sanja, Radovanović, Željko, Petrović, Rada, Janaćković, Đorđe, "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity" in Ceramics International, 45, no. 17, Part A (2019):22029,
https://doi.org/10.1016/j.ceramint.2019.07.219 .,
https://hdl.handle.net/21.15107/rcub_dais_6948 .

TY  - JOUR
AU  - Veljović, Đorđe
AU  - Matić, Tamara
AU  - Stamenić, Tanja
AU  - Kojić, Vesna
AU  - Dimitrijević Branković, Suzana
AU  - Lukić, Miodrag J.
AU  - Jevtić, Sanja
AU  - Radovanović, Željko
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0272884219320413
UR  - https://dais.sanu.ac.rs/123456789/6504
AB  - The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.
PB  - Elsevier
T2  - Ceramics International
T1  - Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity
SP  - 22029
SP  - 22039
VL  - 45
IS  - 17, Part A
DO  - 10.1016/j.ceramint.2019.07.219
UR  - https://hdl.handle.net/21.15107/rcub_dais_6504
ER  - 

@article{
author = "Veljović, Đorđe and Matić, Tamara and Stamenić, Tanja and Kojić, Vesna and Dimitrijević Branković, Suzana and Lukić, Miodrag J. and Jevtić, Sanja and Radovanović, Željko and Petrović, Rada and Janaćković, Đorđe",
year = "2019",
abstract = "The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity",
pages = "22029-22039",
volume = "45",
number = "17, Part A",
doi = "10.1016/j.ceramint.2019.07.219",
url = "https://hdl.handle.net/21.15107/rcub_dais_6504"
}

Veljović, Đ., Matić, T., Stamenić, T., Kojić, V., Dimitrijević Branković, S., Lukić, M. J., Jevtić, S., Radovanović, Ž., Petrović, R.,& Janaćković, Đ.. (2019). Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International
Elsevier., 45(17, Part A), 22029.
https://doi.org/10.1016/j.ceramint.2019.07.219
https://hdl.handle.net/21.15107/rcub_dais_6504

Veljović Đ, Matić T, Stamenić T, Kojić V, Dimitrijević Branković S, Lukić MJ, Jevtić S, Radovanović Ž, Petrović R, Janaćković Đ. Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International. 2019;45(17, Part A):22029.
doi:10.1016/j.ceramint.2019.07.219
https://hdl.handle.net/21.15107/rcub_dais_6504 .

Veljović, Đorđe, Matić, Tamara, Stamenić, Tanja, Kojić, Vesna, Dimitrijević Branković, Suzana, Lukić, Miodrag J., Jevtić, Sanja, Radovanović, Željko, Petrović, Rada, Janaćković, Đorđe, "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity" in Ceramics International, 45, no. 17, Part A (2019):22029,
https://doi.org/10.1016/j.ceramint.2019.07.219 .,
https://hdl.handle.net/21.15107/rcub_dais_6504 .

TY  - CONF
AU  - Veljović, Đorđe
AU  - Radovanović, Željko
AU  - Rogan, Jelena
AU  - Dapčević, Aleksandra
AU  - Dimitrijević, Suzana
AU  - Dimitrijević Branković, Suzana
AU  - Kojić, Vesna
AU  - Janaćković, Đorđe
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4718
AB  - Bioactive glasses have been used for over three decades in biomedical applications owing to high bioactivity, biocompatibility, as well as the possibility to stimulate regeneration of the bone. The aim of this work was to synthesized bioactive glasses, which contain lithium and strontium, by commercial method melting-quenching, as well as determining the properties, affected by mentioned ions. Differential thermal/thermogravimetric analysis, particle size distribution, energy-dispersive X-ray spectroscopy, inductively coupled plasma optical emission spectrometry, evaluation of the antimicrobial activity, in vitro bioactivity and biocompatibility test and scanning electron microscopy were used for characterization. The results showed that glass transition and crystallization temperatures are decreasing with addition of lithium and strontium ions. Furthermore, the samples showed high inhibition rate of Escherichia coli growth, as well as high bioactivity and biocompatibility. The crystal apatite layer, formed on the surface of synthesized glasses after seven days in simulated body fluid, differs in shape, size and interconnection of the glass particles, which depends on concentration of lithium and strontium ions.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
T1  - Synthesis and characterization of bioactive glass doped with lithium and strontium ions
SP  - 20
EP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_dais_4718
ER  - 

@conference{
author = "Veljović, Đorđe and Radovanović, Željko and Rogan, Jelena and Dapčević, Aleksandra and Dimitrijević, Suzana and Dimitrijević Branković, Suzana and Kojić, Vesna and Janaćković, Đorđe",
year = "2018",
abstract = "Bioactive glasses have been used for over three decades in biomedical applications owing to high bioactivity, biocompatibility, as well as the possibility to stimulate regeneration of the bone. The aim of this work was to synthesized bioactive glasses, which contain lithium and strontium, by commercial method melting-quenching, as well as determining the properties, affected by mentioned ions. Differential thermal/thermogravimetric analysis, particle size distribution, energy-dispersive X-ray spectroscopy, inductively coupled plasma optical emission spectrometry, evaluation of the antimicrobial activity, in vitro bioactivity and biocompatibility test and scanning electron microscopy were used for characterization. The results showed that glass transition and crystallization temperatures are decreasing with addition of lithium and strontium ions. Furthermore, the samples showed high inhibition rate of Escherichia coli growth, as well as high bioactivity and biocompatibility. The crystal apatite layer, formed on the surface of synthesized glasses after seven days in simulated body fluid, differs in shape, size and interconnection of the glass particles, which depends on concentration of lithium and strontium ions.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia",
title = "Synthesis and characterization of bioactive glass doped with lithium and strontium ions",
pages = "20-20",
url = "https://hdl.handle.net/21.15107/rcub_dais_4718"
}

Veljović, Đ., Radovanović, Ž., Rogan, J., Dapčević, A., Dimitrijević, S., Dimitrijević Branković, S., Kojić, V.,& Janaćković, Đ.. (2018). Synthesis and characterization of bioactive glass doped with lithium and strontium ions. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 20-20.
https://hdl.handle.net/21.15107/rcub_dais_4718

Veljović Đ, Radovanović Ž, Rogan J, Dapčević A, Dimitrijević S, Dimitrijević Branković S, Kojić V, Janaćković Đ. Synthesis and characterization of bioactive glass doped with lithium and strontium ions. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia. 2018;:20-20.
https://hdl.handle.net/21.15107/rcub_dais_4718 .

Veljović, Đorđe, Radovanović, Željko, Rogan, Jelena, Dapčević, Aleksandra, Dimitrijević, Suzana, Dimitrijević Branković, Suzana, Kojić, Vesna, Janaćković, Đorđe, "Synthesis and characterization of bioactive glass doped with lithium and strontium ions" in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia (2018):20-20,
https://hdl.handle.net/21.15107/rcub_dais_4718 .