TY  - JOUR
AU  - Xu, Shiyin
AU  - Liu, Xinhe
AU  - Hou, Yameng
AU  - Kou, Min
AU  - Xu, Xinshi
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Kong, Xianglei
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12955
AB  - Gold chloride clusters play an important role in catalysis and materials chemistry. Due to the diversity of their species and isomers, there is still a dearth of structural studies at the molecular level. In this work, anions of AunCln+3- and AunCln+5- (n = 2–4) clusters were obtained by laser desorption/ionization mass spectrometry (LDI MS), and the most stable isomers of AunCln+3- were determined after a thorough search and optimization at the TPSSh/aug-cc-pVTZ/ECP60MDF level. The results indicate that all isomers with the lowest energy have a planar zigzag skeleton. In each species, there is one Au(III) atom at the edge connected with four Cl atoms, which sets it from the other Au(I) atoms. Four growth pathways for AunCln+3- (n = 2–7) clusters are proposed (labelled R1, R2, R3 and R4). They are all associated with an aurophilic contact and are exothermic. The binding energies tend to stabilize at ~ −41 kcal/mol when the size of the cluster increases in all pathways. The pathway R1, which connects all the most stable isomers of the respective clusters, is characterized by cluster growth due to aurophilic interactions at the terminal atom of Au(I) in the zigzag chains. In the pathway of R4 involving Au-Au bonding in its initial structures (n ≤ 3), the distance between intermediate gold atoms grows with cluster size, ultimately resulting in the transfer of the intermediate Au-Au bonding into aurophilic interaction. The size effect on the structure and aurophilic interactions of these clusters will be better understood based on these discoveries, potentially providing new insights into the active but elusive chemical species involved in the corresponding catalytic reactions or nanoparticle synthesis processes.
T2  - Frontiers in Chemistry
T1  - Structures and growth pathways of AunCln+3-(n≤7) cluster anions
VL  - 12
SP  - 1382443
DO  - 10.3389/fchem.2024.1382443
ER  - 

@article{
author = "Xu, Shiyin and Liu, Xinhe and Hou, Yameng and Kou, Min and Xu, Xinshi and Veljković, Filip and Veličković, Suzana and Kong, Xianglei",
year = "2024",
abstract = "Gold chloride clusters play an important role in catalysis and materials chemistry. Due to the diversity of their species and isomers, there is still a dearth of structural studies at the molecular level. In this work, anions of AunCln+3- and AunCln+5- (n = 2–4) clusters were obtained by laser desorption/ionization mass spectrometry (LDI MS), and the most stable isomers of AunCln+3- were determined after a thorough search and optimization at the TPSSh/aug-cc-pVTZ/ECP60MDF level. The results indicate that all isomers with the lowest energy have a planar zigzag skeleton. In each species, there is one Au(III) atom at the edge connected with four Cl atoms, which sets it from the other Au(I) atoms. Four growth pathways for AunCln+3- (n = 2–7) clusters are proposed (labelled R1, R2, R3 and R4). They are all associated with an aurophilic contact and are exothermic. The binding energies tend to stabilize at ~ −41 kcal/mol when the size of the cluster increases in all pathways. The pathway R1, which connects all the most stable isomers of the respective clusters, is characterized by cluster growth due to aurophilic interactions at the terminal atom of Au(I) in the zigzag chains. In the pathway of R4 involving Au-Au bonding in its initial structures (n ≤ 3), the distance between intermediate gold atoms grows with cluster size, ultimately resulting in the transfer of the intermediate Au-Au bonding into aurophilic interaction. The size effect on the structure and aurophilic interactions of these clusters will be better understood based on these discoveries, potentially providing new insights into the active but elusive chemical species involved in the corresponding catalytic reactions or nanoparticle synthesis processes.",
journal = "Frontiers in Chemistry",
title = "Structures and growth pathways of AunCln+3-(n≤7) cluster anions",
volume = "12",
pages = "1382443",
doi = "10.3389/fchem.2024.1382443"
}

Xu, S., Liu, X., Hou, Y., Kou, M., Xu, X., Veljković, F., Veličković, S.,& Kong, X.. (2024). Structures and growth pathways of AunCln+3-(n≤7) cluster anions. in Frontiers in Chemistry, 12, 1382443.
https://doi.org/10.3389/fchem.2024.1382443

Xu S, Liu X, Hou Y, Kou M, Xu X, Veljković F, Veličković S, Kong X. Structures and growth pathways of AunCln+3-(n≤7) cluster anions. in Frontiers in Chemistry. 2024;12:1382443.
doi:10.3389/fchem.2024.1382443 .

Xu, Shiyin, Liu, Xinhe, Hou, Yameng, Kou, Min, Xu, Xinshi, Veljković, Filip, Veličković, Suzana, Kong, Xianglei, "Structures and growth pathways of AunCln+3-(n≤7) cluster anions" in Frontiers in Chemistry, 12 (2024):1382443,
https://doi.org/10.3389/fchem.2024.1382443 . .

TY  - CHAP
AU  - Veličković, Suzana
AU  - Veljković, Filip
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12720
AB  - This chapter summarizes the experimental methods used to obtain “superalkali” clusters. First, a brief review of the names, classifications and descriptions of the chemical structure of these clusters useful for explaining the experimental research was given. In the next part of the chapter, the various methods of mass spectrometry are presented, with emphasis on the study of the evaporation of individual salts of alkali halides or their mixtures, where “superalkali” clusters are inevitably detected. Surface ionization (thermal ionization) and the Knudsen effusion cell are two standard techniques that have been used in mass spectrometry for many years and have played an important role in the field of “superalkali” clusters from their discovery to the present.  For this reason, the basic principles of operation of the surface ionization source and the Knudsen cell have been presented, along with a brief history of the origin and application of these methods. Some new possibilities of using the Knudsen cell in the mass spectrometer are pointed out, as well as the possibility of combining surface ionization and the Knudsen cell to obtain “superalkali” clusters. The possibilities of determining ionization energies by these two methods are also described.
PB  - Boca Raton : CRC Press
T2  - Superhalogens and Superalkalis
T1  - Mass Spectrometry and “Superalkali” Clusters
SP  - 156
EP  - 197
DO  - 10.1201/9781003384205-7
ER  - 

@inbook{
author = "Veličković, Suzana and Veljković, Filip",
year = "2024",
abstract = "This chapter summarizes the experimental methods used to obtain “superalkali” clusters. First, a brief review of the names, classifications and descriptions of the chemical structure of these clusters useful for explaining the experimental research was given. In the next part of the chapter, the various methods of mass spectrometry are presented, with emphasis on the study of the evaporation of individual salts of alkali halides or their mixtures, where “superalkali” clusters are inevitably detected. Surface ionization (thermal ionization) and the Knudsen effusion cell are two standard techniques that have been used in mass spectrometry for many years and have played an important role in the field of “superalkali” clusters from their discovery to the present.  For this reason, the basic principles of operation of the surface ionization source and the Knudsen cell have been presented, along with a brief history of the origin and application of these methods. Some new possibilities of using the Knudsen cell in the mass spectrometer are pointed out, as well as the possibility of combining surface ionization and the Knudsen cell to obtain “superalkali” clusters. The possibilities of determining ionization energies by these two methods are also described.",
publisher = "Boca Raton : CRC Press",
journal = "Superhalogens and Superalkalis",
booktitle = "Mass Spectrometry and “Superalkali” Clusters",
pages = "156-197",
doi = "10.1201/9781003384205-7"
}

Veličković, S.,& Veljković, F.. (2024). Mass Spectrometry and “Superalkali” Clusters. in Superhalogens and Superalkalis
Boca Raton : CRC Press., 156-197.
https://doi.org/10.1201/9781003384205-7

Veličković S, Veljković F. Mass Spectrometry and “Superalkali” Clusters. in Superhalogens and Superalkalis. 2024;:156-197.
doi:10.1201/9781003384205-7 .

Veličković, Suzana, Veljković, Filip, "Mass Spectrometry and “Superalkali” Clusters" in Superhalogens and Superalkalis (2024):156-197,
https://doi.org/10.1201/9781003384205-7 . .

TY  - JOUR
AU  - Veljković, Filip M.
AU  - Dimitrijević, Stevan P.
AU  - Dimitrijević, Silvana B.
AU  - Vurdelja, Borislava D.
AU  - Matović, Branko
AU  - Stoiljković, Milovan
AU  - Kamberović, Željko
AU  - Veličković, Suzana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10589
AB  - This work presents the perspective of applying the laser desorption/ionization mass spectrometry (LDI MS) for characterization the anode film of the Ag60Cu26Zn14, Ag58.5Cu31.5Pd10, and Ag63Cu27In10 alloys (at high concentrations of chloride ions in solutions). The reference LDI mass spectra of anode films of pure Ag and Cu have been used for the identification of product corrosion. Knowing the clusters detected in the reference spectra lead to the facilitating identification of the LDI mass spectrum of the sample and reduces the analysis time. The LDI MS analysis of these alloys revealed that the predominant corrosion product are AgCl (from AgnCln+1−/+, n = 1–3), and CuCl (from “superhalogen” CumCln− clusters, m = 1–2, n = 2–6); it also revealed Cu2(OH)3Cl (from Cu2(OH)(H2O)2+) and Cu2O (from Cu(H2O)+, Cu2O doped with chlorine). These results are in accordance with the X-ray diffraction and Raman analysis. The LDI MS spectra of alloys contain the additional peaks formed due to the mutual influences of different metals in the alloys (AgCuCl3− (AgCl-CuCl2−), AgCu2Cl4− (AgCl-CuCl-CuCl2−), and Ag2CuCl4− (AgCl-AgCl-CuCl−), which is consistent with the identified corrosion products. It should be noted that the LDI MS suggest the presence of CuCl2, which can be interpreted as the corrosion products retained in the porous films of alloys, and not detected by the other methods due to a small amount. The future theoretical and experimental studies of metal clusters, significant for metallurgy, can contribute that the LDI MS is becoming a powerful analytical tool for characterization the metal surfaces.
T2  - Arabian Journal of Chemistry
T1  - Prospective of the LDI MS to characterization the corrosion products of silver-copper alloys on an example of the Ag-Cu-X (X- Zn, Pd, In) system
VL  - 16
IS  - 2
SP  - 104461
DO  - 10.1016/j.arabjc.2022.104461
ER  - 

@article{
author = "Veljković, Filip M. and Dimitrijević, Stevan P. and Dimitrijević, Silvana B. and Vurdelja, Borislava D. and Matović, Branko and Stoiljković, Milovan and Kamberović, Željko and Veličković, Suzana",
year = "2023",
abstract = "This work presents the perspective of applying the laser desorption/ionization mass spectrometry (LDI MS) for characterization the anode film of the Ag60Cu26Zn14, Ag58.5Cu31.5Pd10, and Ag63Cu27In10 alloys (at high concentrations of chloride ions in solutions). The reference LDI mass spectra of anode films of pure Ag and Cu have been used for the identification of product corrosion. Knowing the clusters detected in the reference spectra lead to the facilitating identification of the LDI mass spectrum of the sample and reduces the analysis time. The LDI MS analysis of these alloys revealed that the predominant corrosion product are AgCl (from AgnCln+1−/+, n = 1–3), and CuCl (from “superhalogen” CumCln− clusters, m = 1–2, n = 2–6); it also revealed Cu2(OH)3Cl (from Cu2(OH)(H2O)2+) and Cu2O (from Cu(H2O)+, Cu2O doped with chlorine). These results are in accordance with the X-ray diffraction and Raman analysis. The LDI MS spectra of alloys contain the additional peaks formed due to the mutual influences of different metals in the alloys (AgCuCl3− (AgCl-CuCl2−), AgCu2Cl4− (AgCl-CuCl-CuCl2−), and Ag2CuCl4− (AgCl-AgCl-CuCl−), which is consistent with the identified corrosion products. It should be noted that the LDI MS suggest the presence of CuCl2, which can be interpreted as the corrosion products retained in the porous films of alloys, and not detected by the other methods due to a small amount. The future theoretical and experimental studies of metal clusters, significant for metallurgy, can contribute that the LDI MS is becoming a powerful analytical tool for characterization the metal surfaces.",
journal = "Arabian Journal of Chemistry",
title = "Prospective of the LDI MS to characterization the corrosion products of silver-copper alloys on an example of the Ag-Cu-X (X- Zn, Pd, In) system",
volume = "16",
number = "2",
pages = "104461",
doi = "10.1016/j.arabjc.2022.104461"
}

Veljković, F. M., Dimitrijević, S. P., Dimitrijević, S. B., Vurdelja, B. D., Matović, B., Stoiljković, M., Kamberović, Ž.,& Veličković, S.. (2023). Prospective of the LDI MS to characterization the corrosion products of silver-copper alloys on an example of the Ag-Cu-X (X- Zn, Pd, In) system. in Arabian Journal of Chemistry, 16(2), 104461.
https://doi.org/10.1016/j.arabjc.2022.104461

Veljković FM, Dimitrijević SP, Dimitrijević SB, Vurdelja BD, Matović B, Stoiljković M, Kamberović Ž, Veličković S. Prospective of the LDI MS to characterization the corrosion products of silver-copper alloys on an example of the Ag-Cu-X (X- Zn, Pd, In) system. in Arabian Journal of Chemistry. 2023;16(2):104461.
doi:10.1016/j.arabjc.2022.104461 .

Veljković, Filip M., Dimitrijević, Stevan P., Dimitrijević, Silvana B., Vurdelja, Borislava D., Matović, Branko, Stoiljković, Milovan, Kamberović, Željko, Veličković, Suzana, "Prospective of the LDI MS to characterization the corrosion products of silver-copper alloys on an example of the Ag-Cu-X (X- Zn, Pd, In) system" in Arabian Journal of Chemistry, 16, no. 2 (2023):104461,
https://doi.org/10.1016/j.arabjc.2022.104461 . .

TY  - CONF
AU  - Veljković, Filip
AU  - Janković, Bojan
AU  - Stajčić, Ivana
AU  - Stoiljković, Milovan
AU  - Janković, Marija
AU  - Kapuran, Đorđe
AU  - Veličković, Suzana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12570
AB  - Mnogi teorijski proračuni su pokazali da su litijumom dekorisni borani (BxHy) ili klasteri bora (Bn) potencijalni materijali za skladištenje vodonika. Pored toga, pokazalo se da klasteri litijumfluorida poboljšavaju kapacitet skladištenja vodonika bolje od samog litijuma. Međutim, broj eksperimentalnih studija je mnogo manji. Zbog toga je u ovom radu ispitivana mogućnost interakcije klastera litijuma ili litijumfluorida sa boranima, metodom laserske desorpcione/jonizacione masenespektrometrije (LDI MS). Preliminarni rezultati su pokazali da negativni mod LDI maseni spektri suspenzije LiF/B (1:3) u dejonizovanoj vodi sadrži Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 - , LiF2LiB(BH4)2 - jone. Smanjenje sadržaja bora u LiF/B sistemu (1:1) rezultira malo izmenjenim masenim spektrom. Intenzitet Li2(BH18) - i LiF2(BH3) - opada, dok druga dva jona pokazuju blago izmenjen sastav: Li2F(B3H2) - i LiF2(BH5)3 - . Rezultati pokazuju da klasteri Li2 i “superhalogen” LiF2 mogu da interaguju sa boranima. U oba slučaja, najintenzivniji joni su bili kompleksi između „superhalogena“-LiF2 i borana.
AB  - Many theoretical calculations have shown that lithium decoration of borane (BxHy) or boron (Bn) clusters are potential materials for hydrogen storage. In addition, lithium fluoride clusters have been shown to improve hydrogen storage capacity better than lithium itself. However, the number of experimental studies is much smaller. Therefore, in this work, the possibility of interaction of lithium or lithium fluoride clusters with boranes was investigated by laser desorption/ionization mass spectrometry (LDI MS). The preliminary results have shown that the negative mode LDI mass spectra of the suspension of LiF/B (1:3) in deionized water include Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 -  LiF2LiB(BH4)2 -  ions. The reducing the boron content in the LiF/B system (1:1) results in a little changed mass spectrum. The intensities of Li2(BH18) -  and LiF2(BH3) -  decrease, while two other ions show a slightly changed composition: Li2F(B3H2) -  and LiF2(BH5)3 - . The results show that the Li2 and “superhalogen” LiF2 clusters can interact with boranes. In both cases, the most intense ions were complexes between “superhalogen”-LiF2 and boranes.
PB  - Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije
C3  - 11th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika
T1  - Investigation of LIF/B system using the negative mode LDI MS: a possible hydrogen storage system
SP  - 115
EP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12570
ER  - 

@conference{
author = "Veljković, Filip and Janković, Bojan and Stajčić, Ivana and Stoiljković, Milovan and Janković, Marija and Kapuran, Đorđe and Veličković, Suzana",
year = "2023",
abstract = "Mnogi teorijski proračuni su pokazali da su litijumom dekorisni borani (BxHy) ili klasteri bora (Bn) potencijalni materijali za skladištenje vodonika. Pored toga, pokazalo se da klasteri litijumfluorida poboljšavaju kapacitet skladištenja vodonika bolje od samog litijuma. Međutim, broj eksperimentalnih studija je mnogo manji. Zbog toga je u ovom radu ispitivana mogućnost interakcije klastera litijuma ili litijumfluorida sa boranima, metodom laserske desorpcione/jonizacione masenespektrometrije (LDI MS). Preliminarni rezultati su pokazali da negativni mod LDI maseni spektri suspenzije LiF/B (1:3) u dejonizovanoj vodi sadrži Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 - , LiF2LiB(BH4)2 - jone. Smanjenje sadržaja bora u LiF/B sistemu (1:1) rezultira malo izmenjenim masenim spektrom. Intenzitet Li2(BH18) - i LiF2(BH3) - opada, dok druga dva jona pokazuju blago izmenjen sastav: Li2F(B3H2) - i LiF2(BH5)3 - . Rezultati pokazuju da klasteri Li2 i “superhalogen” LiF2 mogu da interaguju sa boranima. U oba slučaja, najintenzivniji joni su bili kompleksi između „superhalogena“-LiF2 i borana., Many theoretical calculations have shown that lithium decoration of borane (BxHy) or boron (Bn) clusters are potential materials for hydrogen storage. In addition, lithium fluoride clusters have been shown to improve hydrogen storage capacity better than lithium itself. However, the number of experimental studies is much smaller. Therefore, in this work, the possibility of interaction of lithium or lithium fluoride clusters with boranes was investigated by laser desorption/ionization mass spectrometry (LDI MS). The preliminary results have shown that the negative mode LDI mass spectra of the suspension of LiF/B (1:3) in deionized water include Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 -  LiF2LiB(BH4)2 -  ions. The reducing the boron content in the LiF/B system (1:1) results in a little changed mass spectrum. The intensities of Li2(BH18) -  and LiF2(BH3) -  decrease, while two other ions show a slightly changed composition: Li2F(B3H2) -  and LiF2(BH5)3 - . The results show that the Li2 and “superhalogen” LiF2 clusters can interact with boranes. In both cases, the most intense ions were complexes between “superhalogen”-LiF2 and boranes.",
publisher = "Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije",
journal = "11th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika, Investigation of LIF/B system using the negative mode LDI MS: a possible hydrogen storage system",
pages = "115-118",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12570"
}

Veljković, F., Janković, B., Stajčić, I., Stoiljković, M., Janković, M., Kapuran, Đ.,& Veličković, S.. (2023). Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika. in 11th International Conference on Renewable Electrical Power Sources : Proceedings
Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije., 115-118.
https://hdl.handle.net/21.15107/rcub_vinar_12570

Veljković F, Janković B, Stajčić I, Stoiljković M, Janković M, Kapuran Đ, Veličković S. Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika. in 11th International Conference on Renewable Electrical Power Sources : Proceedings. 2023;:115-118.
https://hdl.handle.net/21.15107/rcub_vinar_12570 .

Veljković, Filip, Janković, Bojan, Stajčić, Ivana, Stoiljković, Milovan, Janković, Marija, Kapuran, Đorđe, Veličković, Suzana, "Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika" in 11th International Conference on Renewable Electrical Power Sources : Proceedings (2023):115-118,
https://hdl.handle.net/21.15107/rcub_vinar_12570 .

TY  - JOUR
AU  - Jelić, Dijana
AU  - Đermanović, Mirjana
AU  - Marković, Anđela
AU  - Manić, Nebojša
AU  - Veličković, Suzana
AU  - Veljković, Filip M.
AU  - Janković, Bojan Ž.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10738
AB  - This work provides detailed mechanistic analysis of thermo-oxidative degradation behavior of vitamin D3—Ca (CaCO3 form) solid state supplement formulation. Analytical techniques such Attenuated Total Reflection Fourier-transform Infrared (ATR-FTIR) spectroscopy and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) were used for analysis of homogeneity of active pharmaceutical ingredients (APIs) throughout excipients contained within solid dosage forms. Information gained from MALDI-MS experiments was used to improve and better understand interactions present, later clearly disclosed through kinetic modeling. It was found that process mechanism proceeds via two single-step unbranched reactions and two steps of consecutive reactions. Key features include vitamin D3 meltings and degradation via hydrogen abstraction followed by addition of oxygen forming 1-hydroxy-vitamin D3 and further through its dehydration to 1-keto-vitamin D3. Identified product 1-hydroxy-vitamin D3 is substantial for enhancing the immune response of human body in fight against respiratory viruses. Another two degradation products, namely pyrocalciferol and isopyrocalciferol, produced by thermal isomerization at higher temperatures, were also identified. These vitamin epimers have crucial role in functioning of immune cells. Degradation process of mineral structure occurs through water molecules removal, forming anhydrous polymorph of CaCO3, where formation of solid (CaO) and gaseous (CO2) products participates in kinetically stabilized additive-functionalized amorphous CaCO3 crystallization. Confirmation of correctness of proposed degradation mechanism was verified by modulated dynamic (MD) predictions. Information obtained is valuable and suitable for safety evaluations of given supplement, but also could be applied for solid state forms, which are generally sensitive to oxidative conditions. © 2023, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques
VL  - 148
SP  - 4281
EP  - 4305
DO  - 10.1007/s10973-023-12017-3
ER  - 

@article{
author = "Jelić, Dijana and Đermanović, Mirjana and Marković, Anđela and Manić, Nebojša and Veličković, Suzana and Veljković, Filip M. and Janković, Bojan Ž.",
year = "2023",
abstract = "This work provides detailed mechanistic analysis of thermo-oxidative degradation behavior of vitamin D3—Ca (CaCO3 form) solid state supplement formulation. Analytical techniques such Attenuated Total Reflection Fourier-transform Infrared (ATR-FTIR) spectroscopy and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) were used for analysis of homogeneity of active pharmaceutical ingredients (APIs) throughout excipients contained within solid dosage forms. Information gained from MALDI-MS experiments was used to improve and better understand interactions present, later clearly disclosed through kinetic modeling. It was found that process mechanism proceeds via two single-step unbranched reactions and two steps of consecutive reactions. Key features include vitamin D3 meltings and degradation via hydrogen abstraction followed by addition of oxygen forming 1-hydroxy-vitamin D3 and further through its dehydration to 1-keto-vitamin D3. Identified product 1-hydroxy-vitamin D3 is substantial for enhancing the immune response of human body in fight against respiratory viruses. Another two degradation products, namely pyrocalciferol and isopyrocalciferol, produced by thermal isomerization at higher temperatures, were also identified. These vitamin epimers have crucial role in functioning of immune cells. Degradation process of mineral structure occurs through water molecules removal, forming anhydrous polymorph of CaCO3, where formation of solid (CaO) and gaseous (CO2) products participates in kinetically stabilized additive-functionalized amorphous CaCO3 crystallization. Confirmation of correctness of proposed degradation mechanism was verified by modulated dynamic (MD) predictions. Information obtained is valuable and suitable for safety evaluations of given supplement, but also could be applied for solid state forms, which are generally sensitive to oxidative conditions. © 2023, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques",
volume = "148",
pages = "4281-4305",
doi = "10.1007/s10973-023-12017-3"
}

Jelić, D., Đermanović, M., Marković, A., Manić, N., Veličković, S., Veljković, F. M.,& Janković, B. Ž.. (2023). Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques. in Journal of Thermal Analysis and Calorimetry, 148, 4281-4305.
https://doi.org/10.1007/s10973-023-12017-3

Jelić D, Đermanović M, Marković A, Manić N, Veličković S, Veljković FM, Janković BŽ. Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques. in Journal of Thermal Analysis and Calorimetry. 2023;148:4281-4305.
doi:10.1007/s10973-023-12017-3 .

Jelić, Dijana, Đermanović, Mirjana, Marković, Anđela, Manić, Nebojša, Veličković, Suzana, Veljković, Filip M., Janković, Bojan Ž., "Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques" in Journal of Thermal Analysis and Calorimetry, 148 (2023):4281-4305,
https://doi.org/10.1007/s10973-023-12017-3 . .

TY  - CONF
AU  - Stajčić, A.
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Janković, Marija
AU  - Janković, Bojan
AU  - Pijović, Milena
AU  - Stajčić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12598
AB  - Polymers and polymer composites have wide application in every industrial field, and are a subject of continuous research from different scientific aspects [1,2]. However, most commercial polymers are oil refinery based products. Recently, due to a growing concern for oil depletion, researchers have been focused on modification of polymers, as well as reinforcements [3,4]. Epoxy resin is the most commonly used adhesive that can be improved with fiber or particle reinforcements, or by using chemical modifiers. Modifying agents from renewable resources show potential in replacing oil-based compounds, because of their abundance, low price and heterogeneous structure that offers number of reactive groups [5]. In our research, honey was used as a bio-based modifier for diglycidyl ether of bisphenolA (DGEBA) based epoxy resin, with the aim of investigating structural changes. MALDI-TOF mass spectrometry [6] was used as a powerful technique that is able to reveal presence of functional groups and modified epoxy resin structure. In this manner, successful chemical modification of epoxy resin was confirmed, which further opened the path for the investigation of honey potential as epoxy modifying agent.
PB  - Belgrade : Serbian Chemical Society
C3  - 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
T1  - Structural characterization of bio-modified epoxy resin by using MALDI-TOF
SP  - 99
EP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12598
ER  - 

@conference{
author = "Stajčić, A. and Veljković, Filip and Veličković, Suzana and Janković, Marija and Janković, Bojan and Pijović, Milena and Stajčić, Ivana",
year = "2023",
abstract = "Polymers and polymer composites have wide application in every industrial field, and are a subject of continuous research from different scientific aspects [1,2]. However, most commercial polymers are oil refinery based products. Recently, due to a growing concern for oil depletion, researchers have been focused on modification of polymers, as well as reinforcements [3,4]. Epoxy resin is the most commonly used adhesive that can be improved with fiber or particle reinforcements, or by using chemical modifiers. Modifying agents from renewable resources show potential in replacing oil-based compounds, because of their abundance, low price and heterogeneous structure that offers number of reactive groups [5]. In our research, honey was used as a bio-based modifier for diglycidyl ether of bisphenolA (DGEBA) based epoxy resin, with the aim of investigating structural changes. MALDI-TOF mass spectrometry [6] was used as a powerful technique that is able to reveal presence of functional groups and modified epoxy resin structure. In this manner, successful chemical modification of epoxy resin was confirmed, which further opened the path for the investigation of honey potential as epoxy modifying agent.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "9th Symposium Chemistry and Environmental Protection : Book of Abstracts",
title = "Structural characterization of bio-modified epoxy resin by using MALDI-TOF",
pages = "99-99",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12598"
}

Stajčić, A., Veljković, F., Veličković, S., Janković, M., Janković, B., Pijović, M.,& Stajčić, I.. (2023). Structural characterization of bio-modified epoxy resin by using MALDI-TOF. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
Belgrade : Serbian Chemical Society., 99-99.
https://hdl.handle.net/21.15107/rcub_vinar_12598

Stajčić A, Veljković F, Veličković S, Janković M, Janković B, Pijović M, Stajčić I. Structural characterization of bio-modified epoxy resin by using MALDI-TOF. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts. 2023;:99-99.
https://hdl.handle.net/21.15107/rcub_vinar_12598 .

Stajčić, A., Veljković, Filip, Veličković, Suzana, Janković, Marija, Janković, Bojan, Pijović, Milena, Stajčić, Ivana, "Structural characterization of bio-modified epoxy resin by using MALDI-TOF" in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts (2023):99-99,
https://hdl.handle.net/21.15107/rcub_vinar_12598 .

TY  - JOUR
AU  - Stajčić, Ivana
AU  - Veljković, Filip
AU  - Petrović, Miloš
AU  - Veličković, Suzana
AU  - Radojević, Vesna
AU  - Vlahović, Branislav
AU  - Stajčić, Aleksandar
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11093
AB  - High performance polymers with bio-based modifiers are promising materials in terms of applications and environmental impact. In this work, raw acacia honey was used as a bio-modifier for epoxy resin, as a rich source of functional groups. The addition of honey resulted in the formation of highly stable structures that were observed in scanning electron microscopy images as separate phases at the fracture surface, which were involved in the toughening of the resin. Structural changes were investigated, revealing the formation of a new aldehyde carbonyl group. Thermal analysis confirmed the formation of products that were stable up to 600 °C, with a glass transition temperature of 228 °C. An energy-controlled impact test was performed to compare the absorbed impact energy of bio-modified epoxy containing different amounts of honey with unmodified epoxy resin. The results showed that bio-modified epoxy resin with 3 wt% of acacia honey could withstand several impacts with full recovery, while unmodified epoxy resin broke at first impact. The absorbed energy at first impact was 2.5 times higher for bio-modified epoxy resin than it was for unmodified epoxy resin. In this manner, by using simple preparation and a raw material that is abundant in nature, a novel epoxy with high thermal and impact resistance was obtained, opening a path for further research in this field.
T2  - Polymers
T1  - Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey
VL  - 15
IS  - 10
SP  - 2261
DO  - 10.3390/polym15102261
ER  - 

@article{
author = "Stajčić, Ivana and Veljković, Filip and Petrović, Miloš and Veličković, Suzana and Radojević, Vesna and Vlahović, Branislav and Stajčić, Aleksandar",
year = "2023",
abstract = "High performance polymers with bio-based modifiers are promising materials in terms of applications and environmental impact. In this work, raw acacia honey was used as a bio-modifier for epoxy resin, as a rich source of functional groups. The addition of honey resulted in the formation of highly stable structures that were observed in scanning electron microscopy images as separate phases at the fracture surface, which were involved in the toughening of the resin. Structural changes were investigated, revealing the formation of a new aldehyde carbonyl group. Thermal analysis confirmed the formation of products that were stable up to 600 °C, with a glass transition temperature of 228 °C. An energy-controlled impact test was performed to compare the absorbed impact energy of bio-modified epoxy containing different amounts of honey with unmodified epoxy resin. The results showed that bio-modified epoxy resin with 3 wt% of acacia honey could withstand several impacts with full recovery, while unmodified epoxy resin broke at first impact. The absorbed energy at first impact was 2.5 times higher for bio-modified epoxy resin than it was for unmodified epoxy resin. In this manner, by using simple preparation and a raw material that is abundant in nature, a novel epoxy with high thermal and impact resistance was obtained, opening a path for further research in this field.",
journal = "Polymers",
title = "Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey",
volume = "15",
number = "10",
pages = "2261",
doi = "10.3390/polym15102261"
}

Stajčić, I., Veljković, F., Petrović, M., Veličković, S., Radojević, V., Vlahović, B.,& Stajčić, A.. (2023). Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey. in Polymers, 15(10), 2261.
https://doi.org/10.3390/polym15102261

Stajčić I, Veljković F, Petrović M, Veličković S, Radojević V, Vlahović B, Stajčić A. Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey. in Polymers. 2023;15(10):2261.
doi:10.3390/polym15102261 .

Stajčić, Ivana, Veljković, Filip, Petrović, Miloš, Veličković, Suzana, Radojević, Vesna, Vlahović, Branislav, Stajčić, Aleksandar, "Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey" in Polymers, 15, no. 10 (2023):2261,
https://doi.org/10.3390/polym15102261 . .

TY  - CONF
AU  - Janković, Marija
AU  - Veljković, Filip
AU  - Sarap, Nataša
AU  - Veličković, Suzana
AU  - Stajčić, Ivana
AU  - Šljivić-Ivanović, Marija
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12354
AB  - This paper presents application of a nuclear technique for the analysis of radioactivity in supplements using gas proportional counter as well as application of analytical technique Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) in order to characterize the radioactivity contents and stability of the chemical structures  for commercial supplements. Gas proportional counter enables to determination of gross alpha and gross beta activity in the environmental samples, where they are present as ultra trace elements. Also, MALDI-MS method is used, since it represents an excellent analytical technique for detecting large number of biologically important molecules, such as commercial supplements.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
T1  - Analysis of commercial supplements using a nuclear and MALDI-MS techniques
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12354
ER  - 

@conference{
author = "Janković, Marija and Veljković, Filip and Sarap, Nataša and Veličković, Suzana and Stajčić, Ivana and Šljivić-Ivanović, Marija and Janković, Bojan",
year = "2023",
abstract = "This paper presents application of a nuclear technique for the analysis of radioactivity in supplements using gas proportional counter as well as application of analytical technique Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) in order to characterize the radioactivity contents and stability of the chemical structures  for commercial supplements. Gas proportional counter enables to determination of gross alpha and gross beta activity in the environmental samples, where they are present as ultra trace elements. Also, MALDI-MS method is used, since it represents an excellent analytical technique for detecting large number of biologically important molecules, such as commercial supplements.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings",
title = "Analysis of commercial supplements using a nuclear and MALDI-MS techniques",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12354"
}

Janković, M., Veljković, F., Sarap, N., Veličković, S., Stajčić, I., Šljivić-Ivanović, M.,& Janković, B.. (2023). Analysis of commercial supplements using a nuclear and MALDI-MS techniques. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_vinar_12354

Janković M, Veljković F, Sarap N, Veličković S, Stajčić I, Šljivić-Ivanović M, Janković B. Analysis of commercial supplements using a nuclear and MALDI-MS techniques. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12354 .

Janković, Marija, Veljković, Filip, Sarap, Nataša, Veličković, Suzana, Stajčić, Ivana, Šljivić-Ivanović, Marija, Janković, Bojan, "Analysis of commercial supplements using a nuclear and MALDI-MS techniques" in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12354 .

TY  - CONF
AU  - Veljković, Filip
AU  - Drakulić, Dunja
AU  - Todorović, Ana
AU  - Pejić, Snežana
AU  - Bobić, Katarina
AU  - Stajčić, Ivana
AU  - Pajović, Snežana
AU  - Veličković, Suzana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12663
AB  - It is known that the “superalkali” cluster Li2F can significantly improve the hydrogen storage capabilities in carbon materials; boron compounds play a similar role. However, the possibility of interactions of lithium fluoride clusters with boron and hydrogen has not been investigated so far. In this work, a laser desorption/ionization mass spectrometry (LDI MS) was used for this purpose. Preliminary results showed that the interaction between the “superalkali” Li3F cluster, boron and six hydrogen atoms is possible; the ion Li3FBH6+ was detected. Non-stoichiometric clusters of lithium fluoride can also combine with boron and hydrogen in the following manner: Li5F2BH5+ Li5F3BH2+ Li4F5BH4+ Li6F2B6H+, and Li8F6H+.
PB  - Kragujevac : Institute for Information Technologies, University of Kragujevac
C3  - ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
T1  - Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS
SP  - 176
EP  - 179
DO  - 10.46793/ICCBI23.176V
ER  - 

@conference{
author = "Veljković, Filip and Drakulić, Dunja and Todorović, Ana and Pejić, Snežana and Bobić, Katarina and Stajčić, Ivana and Pajović, Snežana and Veličković, Suzana",
year = "2023",
abstract = "It is known that the “superalkali” cluster Li2F can significantly improve the hydrogen storage capabilities in carbon materials; boron compounds play a similar role. However, the possibility of interactions of lithium fluoride clusters with boron and hydrogen has not been investigated so far. In this work, a laser desorption/ionization mass spectrometry (LDI MS) was used for this purpose. Preliminary results showed that the interaction between the “superalkali” Li3F cluster, boron and six hydrogen atoms is possible; the ion Li3FBH6+ was detected. Non-stoichiometric clusters of lithium fluoride can also combine with boron and hydrogen in the following manner: Li5F2BH5+ Li5F3BH2+ Li4F5BH4+ Li6F2B6H+, and Li8F6H+.",
publisher = "Kragujevac : Institute for Information Technologies, University of Kragujevac",
journal = "ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings",
title = "Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS",
pages = "176-179",
doi = "10.46793/ICCBI23.176V"
}

Veljković, F., Drakulić, D., Todorović, A., Pejić, S., Bobić, K., Stajčić, I., Pajović, S.,& Veličković, S.. (2023). Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
Kragujevac : Institute for Information Technologies, University of Kragujevac., 176-179.
https://doi.org/10.46793/ICCBI23.176V

Veljković F, Drakulić D, Todorović A, Pejić S, Bobić K, Stajčić I, Pajović S, Veličković S. Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings. 2023;:176-179.
doi:10.46793/ICCBI23.176V .

Veljković, Filip, Drakulić, Dunja, Todorović, Ana, Pejić, Snežana, Bobić, Katarina, Stajčić, Ivana, Pajović, Snežana, Veličković, Suzana, "Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS" in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings (2023):176-179,
https://doi.org/10.46793/ICCBI23.176V . .

TY  - JOUR
AU  - Janković, Bojan
AU  - Papović, Snežana
AU  - Vraneš, Milan
AU  - Knežević, Teodora
AU  - Pržulj, Sanja
AU  - Zeljković, Saša
AU  - Veličković, Suzana
AU  - Veljković, Filip
AU  - Jelić, Dijana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10850
AB  - A powdered PVA/CaCO3 nanocomposite carrier was successfully fabricated for effective loading of small bioactive molecules, such as vitamin D3 (VD3). Generation of, namely, VD3/PVA/CaCO3 nanocomposite scaffold was carried out through an adsorption mechanism as a loading route of an active compound onto a powder carrier. Developed composites were characterized by structural, morphological and thermal analyses techniques, such as X-ray powder diffraction (XRPD), Fourier-transform infrared (FTIR) spectroscopy, MALDI (matrix-assisted laser desorption/ionization) – mass spectrometry (MS), Brunauer–Emmett–Teller (BET) – NLDFT (Non-local Density Functional Theory) method, scanning electron microscopy (SEM), simultaneous TG-DTG and coupled TG-MS. XRD results showed that the average crystallite size of synthesized VD3/PVA/CaCO3 amounts 32.93 nm exhibiting microstrain presence, where PVA incorporation causes non-uniform calcite lattice distortion. SEM analysis showed that VD3/PVA/CaCO3 nanocomposite scaffold contains agglomerated rhomboidal calcite particles with VD3 particles of irregular shapes attached. Fabricated VD3/PVA/CaCO3 clearly showed the existence of calcite “staircase” dendrites as the aftermath of inhibiting the effect of impurities on the growth of crystals in normal directions. It was determined that the decomposition of PVA additionally enhances the thermal stability of VD3, through the stabilization effect by acting on van der Waal’s forces during polyene formation, confirmed by MALDI-TOF MS results.
T2  - Journal of Materials Science
T1  - Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties
VL  - 58
IS  - 15
SP  - 6580
EP  - 6601
DO  - 10.1007/s10853-023-08453-z
ER  - 

@article{
author = "Janković, Bojan and Papović, Snežana and Vraneš, Milan and Knežević, Teodora and Pržulj, Sanja and Zeljković, Saša and Veličković, Suzana and Veljković, Filip and Jelić, Dijana",
year = "2023",
abstract = "A powdered PVA/CaCO3 nanocomposite carrier was successfully fabricated for effective loading of small bioactive molecules, such as vitamin D3 (VD3). Generation of, namely, VD3/PVA/CaCO3 nanocomposite scaffold was carried out through an adsorption mechanism as a loading route of an active compound onto a powder carrier. Developed composites were characterized by structural, morphological and thermal analyses techniques, such as X-ray powder diffraction (XRPD), Fourier-transform infrared (FTIR) spectroscopy, MALDI (matrix-assisted laser desorption/ionization) – mass spectrometry (MS), Brunauer–Emmett–Teller (BET) – NLDFT (Non-local Density Functional Theory) method, scanning electron microscopy (SEM), simultaneous TG-DTG and coupled TG-MS. XRD results showed that the average crystallite size of synthesized VD3/PVA/CaCO3 amounts 32.93 nm exhibiting microstrain presence, where PVA incorporation causes non-uniform calcite lattice distortion. SEM analysis showed that VD3/PVA/CaCO3 nanocomposite scaffold contains agglomerated rhomboidal calcite particles with VD3 particles of irregular shapes attached. Fabricated VD3/PVA/CaCO3 clearly showed the existence of calcite “staircase” dendrites as the aftermath of inhibiting the effect of impurities on the growth of crystals in normal directions. It was determined that the decomposition of PVA additionally enhances the thermal stability of VD3, through the stabilization effect by acting on van der Waal’s forces during polyene formation, confirmed by MALDI-TOF MS results.",
journal = "Journal of Materials Science",
title = "Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties",
volume = "58",
number = "15",
pages = "6580-6601",
doi = "10.1007/s10853-023-08453-z"
}

Janković, B., Papović, S., Vraneš, M., Knežević, T., Pržulj, S., Zeljković, S., Veličković, S., Veljković, F.,& Jelić, D.. (2023). Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties. in Journal of Materials Science, 58(15), 6580-6601.
https://doi.org/10.1007/s10853-023-08453-z

Janković B, Papović S, Vraneš M, Knežević T, Pržulj S, Zeljković S, Veličković S, Veljković F, Jelić D. Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties. in Journal of Materials Science. 2023;58(15):6580-6601.
doi:10.1007/s10853-023-08453-z .

Janković, Bojan, Papović, Snežana, Vraneš, Milan, Knežević, Teodora, Pržulj, Sanja, Zeljković, Saša, Veličković, Suzana, Veljković, Filip, Jelić, Dijana, "Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties" in Journal of Materials Science, 58, no. 15 (2023):6580-6601,
https://doi.org/10.1007/s10853-023-08453-z . .

TY  - CONF
AU  - Bobić, Katarina
AU  - Todorović, Ana
AU  - Pejić, Snežana
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Pajović, Snežana B.
AU  - Drakulić, Dunja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12389
AB  - Titanium dioxide nanoparticles (TiO2NPs) are widely used in pharmaceutics, food products and cosmetics. Besides numerous beneficial outcomes, they also induce toxic effects in different organs, including the eyes. The recent findings report that some surface modifications can attenuate TiO2NPs toxicity. Thus, the aim of this study was to compare the effects of acute oral treatment with commercially available, bare TiO2NPs and TiO2NPs surface modified with salicylic acid (SA-TiO2NPs) using adult Wistar rats as model organisms. Control animals were gastrically intubated with vehicle (0.01 M HCl), while others were treated with either TiO2NPs or SA-TiO2NPs (1000mg/kg dissolved in vehicle). Afterward, the mortality rate as the acute toxicity parameter and parameters of neurological function were assessed. Animals were sacrificed on the 14th day following treatment. In the eye crude synaptosomal fraction, the effects of treatments on oxidative stress markers such as prooxidant/antioxidant balance (PAB) and lipid peroxidation (LPO) were compared. According to the obtained results, the mortality was 0 in all experimental groups. TiO2NPs and SA-TiO2NPs treatments displayed mild effects on spontaneous activity and pacing and had no impact on the visual placing reflex. Moreover, TiO2NPs and SA-TiO2NPs exposure significantly elevated PAB levels, when compared to controls. Animals treated with SA-TiO2NPs had similar LPO levels as controls, while in TiO2NPs group LPO levels were significantly increased. The presented data showed that both examined nanoparticles exerted similar outcomes referring to most of the investigated parameters, however, surface binding of SA decreased the level of LPO and thus, mitigated some of TiO2NPs toxicity in the eyes.
PB  - Kragujevac : Institute for Information Technologies, University of Kragujevac
C3  - ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
T1  - TiO2 nanoparticles and TiO2 nanoparticles surface modified with salicylic acid affect neurological functions and oxidative stress markers in the eyes of adult rats
SP  - 499
EP  - 502
DO  - 10.46793/ICCBI23.499B
ER  - 

@conference{
author = "Bobić, Katarina and Todorović, Ana and Pejić, Snežana and Veljković, Filip and Veličković, Suzana and Pajović, Snežana B. and Drakulić, Dunja",
year = "2023",
abstract = "Titanium dioxide nanoparticles (TiO2NPs) are widely used in pharmaceutics, food products and cosmetics. Besides numerous beneficial outcomes, they also induce toxic effects in different organs, including the eyes. The recent findings report that some surface modifications can attenuate TiO2NPs toxicity. Thus, the aim of this study was to compare the effects of acute oral treatment with commercially available, bare TiO2NPs and TiO2NPs surface modified with salicylic acid (SA-TiO2NPs) using adult Wistar rats as model organisms. Control animals were gastrically intubated with vehicle (0.01 M HCl), while others were treated with either TiO2NPs or SA-TiO2NPs (1000mg/kg dissolved in vehicle). Afterward, the mortality rate as the acute toxicity parameter and parameters of neurological function were assessed. Animals were sacrificed on the 14th day following treatment. In the eye crude synaptosomal fraction, the effects of treatments on oxidative stress markers such as prooxidant/antioxidant balance (PAB) and lipid peroxidation (LPO) were compared. According to the obtained results, the mortality was 0 in all experimental groups. TiO2NPs and SA-TiO2NPs treatments displayed mild effects on spontaneous activity and pacing and had no impact on the visual placing reflex. Moreover, TiO2NPs and SA-TiO2NPs exposure significantly elevated PAB levels, when compared to controls. Animals treated with SA-TiO2NPs had similar LPO levels as controls, while in TiO2NPs group LPO levels were significantly increased. The presented data showed that both examined nanoparticles exerted similar outcomes referring to most of the investigated parameters, however, surface binding of SA decreased the level of LPO and thus, mitigated some of TiO2NPs toxicity in the eyes.",
publisher = "Kragujevac : Institute for Information Technologies, University of Kragujevac",
journal = "ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings",
title = "TiO2 nanoparticles and TiO2 nanoparticles surface modified with salicylic acid affect neurological functions and oxidative stress markers in the eyes of adult rats",
pages = "499-502",
doi = "10.46793/ICCBI23.499B"
}

Bobić, K., Todorović, A., Pejić, S., Veljković, F., Veličković, S., Pajović, S. B.,& Drakulić, D.. (2023). TiO2 nanoparticles and TiO2 nanoparticles surface modified with salicylic acid affect neurological functions and oxidative stress markers in the eyes of adult rats. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
Kragujevac : Institute for Information Technologies, University of Kragujevac., 499-502.
https://doi.org/10.46793/ICCBI23.499B

Bobić K, Todorović A, Pejić S, Veljković F, Veličković S, Pajović SB, Drakulić D. TiO2 nanoparticles and TiO2 nanoparticles surface modified with salicylic acid affect neurological functions and oxidative stress markers in the eyes of adult rats. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings. 2023;:499-502.
doi:10.46793/ICCBI23.499B .

Bobić, Katarina, Todorović, Ana, Pejić, Snežana, Veljković, Filip, Veličković, Suzana, Pajović, Snežana B., Drakulić, Dunja, "TiO2 nanoparticles and TiO2 nanoparticles surface modified with salicylic acid affect neurological functions and oxidative stress markers in the eyes of adult rats" in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings (2023):499-502,
https://doi.org/10.46793/ICCBI23.499B . .

TY  - CONF
AU  - Veljković, Filip
AU  - Matović, Branko
AU  - Butulija, Svetlana
AU  - Stoiljković, Milovan
AU  - Stajčić, Ivana
AU  - Janković, Bojan
AU  - Veličković, Suzana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12622
AB  - In the last couple of decades the scientific is making great efforts to investigate the phenomenon of laser-matter interaction, because these knowledge can directly positively influence on technological innovations in the field of materials. This phenomenon are still not fully invetigate since involves a number physical and chemical processes, which take place simultaneously or separated in time and space [1]. The laser desorption/ionization (LDI) implies the following processes: the laser provide a pulse of energy to sample (for a few ns), the sample increases in temperature quickly ( to several thousand degrees), so lead to the production ions, neutrals and electrons in the gass phase [2]. The aim of this paper is to examine the products of the gas phase formed during the interaction of laser- Li1.999Ta0.005SiO3. The Li1.999Ta0.005SiO3 ceramics has a wide application because the melting of lithium metasilicate is used for the calibration of thermocouples, as a flux in glazes and ceramic enamels, dental glass, nuclear waste immobilization as well as ceramic materials for fusion reactors. The knowledge gained should contribute to a better understanding behavior of Li1.999Ta0.005SiO3 in extreme conditions. The experiments were performed on a commercial matrix-assisted laser desorption/ionization mass spectrometer (MALDI MS) with time of flight mass analyzer (Voyager-DE PRO, Sciex, USA), equipped with a nitrogen pulse laser (pulse duration of 3 ns, 20 Hz, and wavelength of 337 nm). The mass spectra were obtained using the LDI (without matrices) positive and negative reflector modes. It is known that the LDI MS is an efficient method for the production and detection of homogeneous and heterogeneous clusters [3]. Preliminary results shows that the ion signals in the negative ion LDI mass spectrum of Li1.999Ta0.005SiO3 correspond to the following species: m/z 59.89 SiO2 -  (calcd 59.97), m/z 71.90 Si2O-  (calcd 71.95), m/z 83.90 Si3 -  (calcd 83.93), m/z 95.91 Si(OH)4 - (calcd 95.99), m/z107.91 Si2(OH)2(H2O)-  (calcd 107.97), m/z 119.92 Si2O4 -  (calcd 119.93), m/z 120.95 Si2O3(OH)-  (calcd 120.94), m/z 131.93 Si3O3 -  (calcd 131.92), m/z 143.92 Si2(OH)2(H2O)3 - (calcd 143.99). The ion signals in the positive mode were attributed to the following cations: LiSi(OH)+  (m/z 52.02, calcd 51.99), Li3(OH)(H2O)+ (m/z 56.04, calcd 56.06), Li2SiO+ (m/z 58.05 calcd 58.00), Li3Si2H2(H2O)+ (m/z 97.15 calcd 97.03), Li5Si2H2O+ (m/z 109.10, calcd 109.04). The results show that silicon-oxygen cluster ions were formed in the negative mode, while lithiumsilicon clusters were detected in the positive mode.
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
T1  - Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3
SP  - 46
EP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12622
ER  - 

@conference{
author = "Veljković, Filip and Matović, Branko and Butulija, Svetlana and Stoiljković, Milovan and Stajčić, Ivana and Janković, Bojan and Veličković, Suzana",
year = "2022",
abstract = "In the last couple of decades the scientific is making great efforts to investigate the phenomenon of laser-matter interaction, because these knowledge can directly positively influence on technological innovations in the field of materials. This phenomenon are still not fully invetigate since involves a number physical and chemical processes, which take place simultaneously or separated in time and space [1]. The laser desorption/ionization (LDI) implies the following processes: the laser provide a pulse of energy to sample (for a few ns), the sample increases in temperature quickly ( to several thousand degrees), so lead to the production ions, neutrals and electrons in the gass phase [2]. The aim of this paper is to examine the products of the gas phase formed during the interaction of laser- Li1.999Ta0.005SiO3. The Li1.999Ta0.005SiO3 ceramics has a wide application because the melting of lithium metasilicate is used for the calibration of thermocouples, as a flux in glazes and ceramic enamels, dental glass, nuclear waste immobilization as well as ceramic materials for fusion reactors. The knowledge gained should contribute to a better understanding behavior of Li1.999Ta0.005SiO3 in extreme conditions. The experiments were performed on a commercial matrix-assisted laser desorption/ionization mass spectrometer (MALDI MS) with time of flight mass analyzer (Voyager-DE PRO, Sciex, USA), equipped with a nitrogen pulse laser (pulse duration of 3 ns, 20 Hz, and wavelength of 337 nm). The mass spectra were obtained using the LDI (without matrices) positive and negative reflector modes. It is known that the LDI MS is an efficient method for the production and detection of homogeneous and heterogeneous clusters [3]. Preliminary results shows that the ion signals in the negative ion LDI mass spectrum of Li1.999Ta0.005SiO3 correspond to the following species: m/z 59.89 SiO2 -  (calcd 59.97), m/z 71.90 Si2O-  (calcd 71.95), m/z 83.90 Si3 -  (calcd 83.93), m/z 95.91 Si(OH)4 - (calcd 95.99), m/z107.91 Si2(OH)2(H2O)-  (calcd 107.97), m/z 119.92 Si2O4 -  (calcd 119.93), m/z 120.95 Si2O3(OH)-  (calcd 120.94), m/z 131.93 Si3O3 -  (calcd 131.92), m/z 143.92 Si2(OH)2(H2O)3 - (calcd 143.99). The ion signals in the positive mode were attributed to the following cations: LiSi(OH)+  (m/z 52.02, calcd 51.99), Li3(OH)(H2O)+ (m/z 56.04, calcd 56.06), Li2SiO+ (m/z 58.05 calcd 58.00), Li3Si2H2(H2O)+ (m/z 97.15 calcd 97.03), Li5Si2H2O+ (m/z 109.10, calcd 109.04). The results show that silicon-oxygen cluster ions were formed in the negative mode, while lithiumsilicon clusters were detected in the positive mode.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts",
title = "Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3",
pages = "46-46",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12622"
}

Veljković, F., Matović, B., Butulija, S., Stoiljković, M., Stajčić, I., Janković, B.,& Veličković, S.. (2022). Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 46-46.
https://hdl.handle.net/21.15107/rcub_vinar_12622

Veljković F, Matović B, Butulija S, Stoiljković M, Stajčić I, Janković B, Veličković S. Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts. 2022;:46-46.
https://hdl.handle.net/21.15107/rcub_vinar_12622 .

Veljković, Filip, Matović, Branko, Butulija, Svetlana, Stoiljković, Milovan, Stajčić, Ivana, Janković, Bojan, Veličković, Suzana, "Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3" in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts (2022):46-46,
https://hdl.handle.net/21.15107/rcub_vinar_12622 .

TY  - CONF
AU  - Vuksanović, Marija M.
AU  - Stajčić, Ivana
AU  - Veličković, Z.
AU  - Gržetić, J. D.
AU  - Veljković, Filip M.
AU  - Veličković, Suzana
AU  - Marinković, A.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10675
AB  - Recycling of polymer materials is a promising way of plastic waste reduction and production of compounds that reduce oil-based materials dependence. This paper represents synthesis of waste PET-based plasticizer obtained by esterification of PET depolymerization products (glycolisate) and levulinic (bio-renewable chemical). Depolymerization of the waste PET was performed using diethylene glycol. Morphological and structural analyses confirmed successful depolymerization of waste-PET, as well as esterification of the obtained product with levulinic acid. Good chemical resistance and mechanical properties, e.g. elongation at break of 65% and tensile strength of 50 MPa, of recycled PVC modified with synthesized waste-PET based plasticizer proved that depolymerization and modification of waste-PET represent one efficient solution for plastic waste recycling.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
T1  - Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production
SP  - 359
EP  - 362
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10675
ER  - 

@conference{
author = "Vuksanović, Marija M. and Stajčić, Ivana and Veličković, Z. and Gržetić, J. D. and Veljković, Filip M. and Veličković, Suzana and Marinković, A.",
year = "2022",
abstract = "Recycling of polymer materials is a promising way of plastic waste reduction and production of compounds that reduce oil-based materials dependence. This paper represents synthesis of waste PET-based plasticizer obtained by esterification of PET depolymerization products (glycolisate) and levulinic (bio-renewable chemical). Depolymerization of the waste PET was performed using diethylene glycol. Morphological and structural analyses confirmed successful depolymerization of waste-PET, as well as esterification of the obtained product with levulinic acid. Good chemical resistance and mechanical properties, e.g. elongation at break of 65% and tensile strength of 50 MPa, of recycled PVC modified with synthesized waste-PET based plasticizer proved that depolymerization and modification of waste-PET represent one efficient solution for plastic waste recycling.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings",
title = "Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production",
pages = "359-362",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10675"
}

Vuksanović, M. M., Stajčić, I., Veličković, Z., Gržetić, J. D., Veljković, F. M., Veličković, S.,& Marinković, A.. (2022). Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
Belgrade : Society of Physical Chemists of Serbia., 359-362.
https://hdl.handle.net/21.15107/rcub_vinar_10675

Vuksanović MM, Stajčić I, Veličković Z, Gržetić JD, Veljković FM, Veličković S, Marinković A. Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings. 2022;:359-362.
https://hdl.handle.net/21.15107/rcub_vinar_10675 .

Vuksanović, Marija M., Stajčić, Ivana, Veličković, Z., Gržetić, J. D., Veljković, Filip M., Veličković, Suzana, Marinković, A., "Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings (2022):359-362,
https://hdl.handle.net/21.15107/rcub_vinar_10675 .

TY  - CONF
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Manić, Nebojša
AU  - Stajčić, Ivana
AU  - Janković, Bojan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12355
AB  - This paper considers possible uses of fruit-based waste (Goji berry mesocarp (GBM)) for the production of key platform chemicals (5-hydroxymethylfurfural (5-HMF)) through thermochemical conversion via slow pyrolysis, which was performed using simultaneous thermal analysis (STA). Originality and significance of this research is reflected in novel insights of fructose molecule role in the production of 5-hydroxymethylfurfural (5-HMF) through structural characteristics, manifesting reciprocal catalysis behaviour in an endergonic reaction pathway, giving high energy products. Based on proposed experimental and theoretical networks, the unwanted side products are totally blocked, where established results in this research clearly show advantages of synergistic work of the substrate molecule (glucose) and pseudo-catalyst (fructose) for the effective production of 5-HMF. The fructose self-repaired (isomerization) cycle through ‘open’ to ‘closed’ structure organization was explained as the key factor, which was responsible for the fructose effective autocatalytic lineage to the desired product, interpreting high yields of 5-HMF.
AB  - Овај рад разматра могућу употребу отпада на бази воћа (Гоји бобица месокарпа (ГБМ)) за производњу кључних платформских хемикалија (5-хидроксиметилфурфурала (5-ХМФ)) кроз термо хемијску конверзију путем споре пиролизе, која је изведена коришћењем симултане термичке анализе (СТА). Оригиналност и значај овог истраживања огледа се у новим спознајама о улози молекула фруктозе у производњи 5-хидроксиметилфурфурала (5-ХМФ) кроз структурне карактеристике, манифестујући реципрочно понашање катализе у путу ендергонске реакције, дајући производе високе енергије. На основу предложених експерименталних и теоретских мрежа, нежељени споредни производи су потпуно блокирани, при чему утврђени резултати у овом истраживању јасно показују предност и синергистичког рада молекула супстрата (глукозе) и псеудо катализатора (фруктозе) за ефикасну производњу 5-ХМФ. Циклус фруктозе који се само поправља (изомеризација) кроз организацију „отворене“ до „затворене“ структуре објашњен је као кључни фактор, који је био одговоран за ефикасну аутокаталитичку линију фруктозе до жељеног производа, тумачећи високе приносе 5-ХМФ-а.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
C3  - ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM)
T1  - Endergonski autokatalitički ciklus fruktoze u efikasnoj proizvodnjI 5-Hidroksimetilfurfurala (5-HMF) iz spore pirolize mezokarpa goji bobica (GBM)
SP  - 77
EP  - 83
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12355
ER  - 

@conference{
author = "Veljković, Filip and Veličković, Suzana and Manić, Nebojša and Stajčić, Ivana and Janković, Bojan",
year = "2022",
abstract = "This paper considers possible uses of fruit-based waste (Goji berry mesocarp (GBM)) for the production of key platform chemicals (5-hydroxymethylfurfural (5-HMF)) through thermochemical conversion via slow pyrolysis, which was performed using simultaneous thermal analysis (STA). Originality and significance of this research is reflected in novel insights of fructose molecule role in the production of 5-hydroxymethylfurfural (5-HMF) through structural characteristics, manifesting reciprocal catalysis behaviour in an endergonic reaction pathway, giving high energy products. Based on proposed experimental and theoretical networks, the unwanted side products are totally blocked, where established results in this research clearly show advantages of synergistic work of the substrate molecule (glucose) and pseudo-catalyst (fructose) for the effective production of 5-HMF. The fructose self-repaired (isomerization) cycle through ‘open’ to ‘closed’ structure organization was explained as the key factor, which was responsible for the fructose effective autocatalytic lineage to the desired product, interpreting high yields of 5-HMF., Овај рад разматра могућу употребу отпада на бази воћа (Гоји бобица месокарпа (ГБМ)) за производњу кључних платформских хемикалија (5-хидроксиметилфурфурала (5-ХМФ)) кроз термо хемијску конверзију путем споре пиролизе, која је изведена коришћењем симултане термичке анализе (СТА). Оригиналност и значај овог истраживања огледа се у новим спознајама о улози молекула фруктозе у производњи 5-хидроксиметилфурфурала (5-ХМФ) кроз структурне карактеристике, манифестујући реципрочно понашање катализе у путу ендергонске реакције, дајући производе високе енергије. На основу предложених експерименталних и теоретских мрежа, нежељени споредни производи су потпуно блокирани, при чему утврђени резултати у овом истраживању јасно показују предност и синергистичког рада молекула супстрата (глукозе) и псеудо катализатора (фруктозе) за ефикасну производњу 5-ХМФ. Циклус фруктозе који се само поправља (изомеризација) кроз организацију „отворене“ до „затворене“ структуре објашњен је као кључни фактор, који је био одговоран за ефикасну аутокаталитичку линију фруктозе до жељеног производа, тумачећи високе приносе 5-ХМФ-а.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS",
journal = "ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM), Endergonski autokatalitički ciklus fruktoze u efikasnoj proizvodnjI 5-Hidroksimetilfurfurala (5-HMF) iz spore pirolize mezokarpa goji bobica (GBM)",
pages = "77-83",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12355"
}

Veljković, F., Veličković, S., Manić, N., Stajčić, I.,& Janković, B.. (2022). Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM). in ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS., 77-83.
https://hdl.handle.net/21.15107/rcub_vinar_12355

Veljković F, Veličković S, Manić N, Stajčić I, Janković B. Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM). in ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings. 2022;:77-83.
https://hdl.handle.net/21.15107/rcub_vinar_12355 .

Veljković, Filip, Veličković, Suzana, Manić, Nebojša, Stajčić, Ivana, Janković, Bojan, "Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM)" in ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings (2022):77-83,
https://hdl.handle.net/21.15107/rcub_vinar_12355 .

TY  - CONF
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Manić, Nebojša
AU  - Stajčić, Ivana
AU  - Janković, Bojan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12364
AB  - This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts
T1  - TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp
SP  - 155
EP  - 155
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12364
ER  - 

@conference{
author = "Veljković, Filip and Veličković, Suzana and Manić, Nebojša and Stajčić, Ivana and Janković, Bojan",
year = "2022",
abstract = "This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts",
title = "TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp",
pages = "155-155",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12364"
}

Veljković, F., Veličković, S., Manić, N., Stajčić, I.,& Janković, B.. (2022). TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts, 155-155.
https://hdl.handle.net/21.15107/rcub_vinar_12364

Veljković F, Veličković S, Manić N, Stajčić I, Janković B. TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts. 2022;:155-155.
https://hdl.handle.net/21.15107/rcub_vinar_12364 .

Veljković, Filip, Veličković, Suzana, Manić, Nebojša, Stajčić, Ivana, Janković, Bojan, "TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts (2022):155-155,
https://hdl.handle.net/21.15107/rcub_vinar_12364 .

TY  - CONF
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Manić, Nebojša
AU  - Stajčić, Ivana
AU  - Janković, Bojan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12615
AB  - This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
T1  - TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp
VL  - 2
SP  - 553
EP  - 556
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12615
ER  - 

@conference{
author = "Veljković, Filip and Veličković, Suzana and Manić, Nebojša and Stajčić, Ivana and Janković, Bojan",
year = "2022",
abstract = "This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings",
title = "TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp",
volume = "2",
pages = "553-556",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12615"
}

Veljković, F., Veličković, S., Manić, N., Stajčić, I.,& Janković, B.. (2022). TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, 2, 553-556.
https://hdl.handle.net/21.15107/rcub_vinar_12615

Veljković F, Veličković S, Manić N, Stajčić I, Janković B. TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings. 2022;2:553-556.
https://hdl.handle.net/21.15107/rcub_vinar_12615 .

Veljković, Filip, Veličković, Suzana, Manić, Nebojša, Stajčić, Ivana, Janković, Bojan, "TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, 2 (2022):553-556,
https://hdl.handle.net/21.15107/rcub_vinar_12615 .

TY  - JOUR
AU  - Srivastava, Ambrish Kumar
AU  - Anusiewicz, Iwona
AU  - Veličković, Suzana
AU  - Sun, Wei-Ming
AU  - Gutsev, Gennady L.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10539
T2  - Frontiers in Chemistry
T1  - Editorial: Superhalogens & superalkalis: Exploration of structure, properties and applications
VL  - 10
DO  - 10.3389/fchem.2022.1075487
ER  - 

@article{
author = "Srivastava, Ambrish Kumar and Anusiewicz, Iwona and Veličković, Suzana and Sun, Wei-Ming and Gutsev, Gennady L.",
year = "2022",
journal = "Frontiers in Chemistry",
title = "Editorial: Superhalogens & superalkalis: Exploration of structure, properties and applications",
volume = "10",
doi = "10.3389/fchem.2022.1075487"
}

Srivastava, A. K., Anusiewicz, I., Veličković, S., Sun, W.,& Gutsev, G. L.. (2022). Editorial: Superhalogens & superalkalis: Exploration of structure, properties and applications. in Frontiers in Chemistry, 10.
https://doi.org/10.3389/fchem.2022.1075487

Srivastava AK, Anusiewicz I, Veličković S, Sun W, Gutsev GL. Editorial: Superhalogens & superalkalis: Exploration of structure, properties and applications. in Frontiers in Chemistry. 2022;10.
doi:10.3389/fchem.2022.1075487 .

Srivastava, Ambrish Kumar, Anusiewicz, Iwona, Veličković, Suzana, Sun, Wei-Ming, Gutsev, Gennady L., "Editorial: Superhalogens & superalkalis: Exploration of structure, properties and applications" in Frontiers in Chemistry, 10 (2022),
https://doi.org/10.3389/fchem.2022.1075487 . .

TY  - JOUR
AU  - Veljković, Filip M.
AU  - Radović, Ivana M.
AU  - Toprek, Dragan
AU  - Petrović, Đorđe
AU  - Stoiljković, Milovan
AU  - Mitić, Vojislav V.
AU  - Veličković, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10084
AB  - Due to the increased use of yttrium in agriculture and industry, there is a growing interest in the impact of yttrium on the environment and human health. Developing novel procedures to detect and quantify species of yttrium represents an important task. In this work, we apply laser desorption/ionization-mass spectrometry (LDI-MS) to detect cluster ions of the solution of yttrium(III) chloride (YCl3) at different pH values. The density functional theory (DFT) calculations were used to reveal the energetically most favored structures of the anions and cations chosen from the LDI-MS results. Examination of the positive and negative mode LDI mass spectra of YCl3 showed the presence of the heterogeneous mononuclear and polynuclear clusters, such as [YCl(OH) (H2O)3]++, [Y2(H2O)]++, [Y4H2(H2O)4]++, and [Y5O4H3]++ (at pH 2 and 5) and [Y2Cl2(H2O)2]−−, [Y2O5(HCl)(OH)]−−, and [Y3OH3(OH)2(H2O)]−− (at pH 2, 5, and 10). The variation in the pH solution of YCl3 slightly affects the LDI mass spectrum of these yttrium clusters. It has only been noticed that the [Y4H2(H2O)4]++ cluster ions were not detected at pH 10. These results can become a guide in the detection of yttrium chloride by LDI-MS in real samples in different fields (ecological, food, and human).
T2  - Modern Physics Letters B
T1  - Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride
VL  - 35
IS  - 35
SP  - 2150454
DO  - 10.1142/S0217984921504546
ER  - 

@article{
author = "Veljković, Filip M. and Radović, Ivana M. and Toprek, Dragan and Petrović, Đorđe and Stoiljković, Milovan and Mitić, Vojislav V. and Veličković, Suzana",
year = "2021",
abstract = "Due to the increased use of yttrium in agriculture and industry, there is a growing interest in the impact of yttrium on the environment and human health. Developing novel procedures to detect and quantify species of yttrium represents an important task. In this work, we apply laser desorption/ionization-mass spectrometry (LDI-MS) to detect cluster ions of the solution of yttrium(III) chloride (YCl3) at different pH values. The density functional theory (DFT) calculations were used to reveal the energetically most favored structures of the anions and cations chosen from the LDI-MS results. Examination of the positive and negative mode LDI mass spectra of YCl3 showed the presence of the heterogeneous mononuclear and polynuclear clusters, such as [YCl(OH) (H2O)3]++, [Y2(H2O)]++, [Y4H2(H2O)4]++, and [Y5O4H3]++ (at pH 2 and 5) and [Y2Cl2(H2O)2]−−, [Y2O5(HCl)(OH)]−−, and [Y3OH3(OH)2(H2O)]−− (at pH 2, 5, and 10). The variation in the pH solution of YCl3 slightly affects the LDI mass spectrum of these yttrium clusters. It has only been noticed that the [Y4H2(H2O)4]++ cluster ions were not detected at pH 10. These results can become a guide in the detection of yttrium chloride by LDI-MS in real samples in different fields (ecological, food, and human).",
journal = "Modern Physics Letters B",
title = "Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride",
volume = "35",
number = "35",
pages = "2150454",
doi = "10.1142/S0217984921504546"
}

Veljković, F. M., Radović, I. M., Toprek, D., Petrović, Đ., Stoiljković, M., Mitić, V. V.,& Veličković, S.. (2021). Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride. in Modern Physics Letters B, 35(35), 2150454.
https://doi.org/10.1142/S0217984921504546

Veljković FM, Radović IM, Toprek D, Petrović Đ, Stoiljković M, Mitić VV, Veličković S. Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride. in Modern Physics Letters B. 2021;35(35):2150454.
doi:10.1142/S0217984921504546 .

Veljković, Filip M., Radović, Ivana M., Toprek, Dragan, Petrović, Đorđe, Stoiljković, Milovan, Mitić, Vojislav V., Veličković, Suzana, "Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride" in Modern Physics Letters B, 35, no. 35 (2021):2150454,
https://doi.org/10.1142/S0217984921504546 . .

TY  - CONF
AU  - Veljković, Filip M.
AU  - Radović, Ivana M.
AU  - Drakulić, Dunja R.
AU  - Dimitrijević, Stevan
AU  - Dimitrijević, Silvana
AU  - Stoiljković, Milovan
AU  - Veličković, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10789
AB  - Silver alloys are generally used in the different fields of industry, including chemical processing, construction, heat exchangers, etc. Although Ag-Cu-Zn-Cd type of alloys, were widely exploited in the second half of the 20th century for their excellent properties, its use is forbidden in the EU due to the high toxicity of cadmium vapors. Ag-Cu-In type of alloy is a good alternative to Ag-Cu-Zn-Cd alloys, with great properties and can be used in various fields of industry. Most common methods for characterization of surface corrosion films of Ag-Cu alloys are: X-ray diffraction (XRD), scanning electron microscopy with energy dispersion spectroscopy (SEM-EDS), Raman spectroscopy and atomic force microscopy (AFM). Our current study focuses on the application of laser desorption ionization mass spectrometry (LDI MS) for determination of corrosion products of Ag-Cu alloy. The aim of this study was to confirm LDI MS as a fast, accurate and reliable method for determination of corrosion products on the surface of Ag-Cu-In alloy.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry
SP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10789
ER  - 

@conference{
author = "Veljković, Filip M. and Radović, Ivana M. and Drakulić, Dunja R. and Dimitrijević, Stevan and Dimitrijević, Silvana and Stoiljković, Milovan and Veličković, Suzana",
year = "2021",
abstract = "Silver alloys are generally used in the different fields of industry, including chemical processing, construction, heat exchangers, etc. Although Ag-Cu-Zn-Cd type of alloys, were widely exploited in the second half of the 20th century for their excellent properties, its use is forbidden in the EU due to the high toxicity of cadmium vapors. Ag-Cu-In type of alloy is a good alternative to Ag-Cu-Zn-Cd alloys, with great properties and can be used in various fields of industry. Most common methods for characterization of surface corrosion films of Ag-Cu alloys are: X-ray diffraction (XRD), scanning electron microscopy with energy dispersion spectroscopy (SEM-EDS), Raman spectroscopy and atomic force microscopy (AFM). Our current study focuses on the application of laser desorption ionization mass spectrometry (LDI MS) for determination of corrosion products of Ag-Cu alloy. The aim of this study was to confirm LDI MS as a fast, accurate and reliable method for determination of corrosion products on the surface of Ag-Cu-In alloy.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry",
pages = "50",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10789"
}

Veljković, F. M., Radović, I. M., Drakulić, D. R., Dimitrijević, S., Dimitrijević, S., Stoiljković, M.,& Veličković, S.. (2021). Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 50.
https://hdl.handle.net/21.15107/rcub_vinar_10789

Veljković FM, Radović IM, Drakulić DR, Dimitrijević S, Dimitrijević S, Stoiljković M, Veličković S. Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:50.
https://hdl.handle.net/21.15107/rcub_vinar_10789 .

Veljković, Filip M., Radović, Ivana M., Drakulić, Dunja R., Dimitrijević, Stevan, Dimitrijević, Silvana, Stoiljković, Milovan, Veličković, Suzana, "Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):50,
https://hdl.handle.net/21.15107/rcub_vinar_10789 .

TY  - CONF
AU  - Veljković, Filip
AU  - Božić, Bojan
AU  - Stoiljković, Milovan
AU  - Radović, Ivana
AU  - Janković, Bojan
AU  - Ćurčić, Milica
AU  - Veličković, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12616
AB  - This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings
T1  - Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry
VL  - 2
SP  - 705
EP  - 708
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12616
ER  - 

@conference{
author = "Veljković, Filip and Božić, Bojan and Stoiljković, Milovan and Radović, Ivana and Janković, Bojan and Ćurčić, Milica and Veličković, Suzana",
year = "2021",
abstract = "This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings",
title = "Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry",
volume = "2",
pages = "705-708",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12616"
}

Veljković, F., Božić, B., Stoiljković, M., Radović, I., Janković, B., Ćurčić, M.,& Veličković, S.. (2021). Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry. in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings
Belgrade : Society of Physical Chemists of Serbia., 2, 705-708.
https://hdl.handle.net/21.15107/rcub_vinar_12616

Veljković F, Božić B, Stoiljković M, Radović I, Janković B, Ćurčić M, Veličković S. Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry. in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings. 2021;2:705-708.
https://hdl.handle.net/21.15107/rcub_vinar_12616 .

Veljković, Filip, Božić, Bojan, Stoiljković, Milovan, Radović, Ivana, Janković, Bojan, Ćurčić, Milica, Veličković, Suzana, "Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry" in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings, 2 (2021):705-708,
https://hdl.handle.net/21.15107/rcub_vinar_12616 .

TY  - CONF
AU  - Veljković, Filip
AU  - Janković, Bojan
AU  - Manić, Nebojša
AU  - Radojević, Miloš
AU  - Stojiljković, Milovan
AU  - Stajčić, Ivana
AU  - Ćurčić, Milica
AU  - Veličković, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12278
AB  - One of the goals that mankind has set for 2050 is decarbonization in the energy sector. For thatreason, the use of hydrogen as an alternative fuel looks like a possible solution. However, the conventionalhydrogen production process (electrolysis) now indirectly accounts for more than 2% oftotal global CO2 emissions. One of the scenarios to reaching set targets involves the decarbonizationof hydrogen production, resulting in green hydrogen. The one of the pathways for production of greenhydrogen is feasible within the gasification of lignocellulosic materials (biomass feedstock) into syngas.However, different feedstock parameters have an impact on the thermochemical conversion processi.e. syngas yield and composition. This paper presents the novel semi-quantitative analysis offundamental experimental data obtained by thermogravimetry and mass spectrometry. According tothe proposed methodology on the lab-scale level is possible to evaluate the feedstock quality for identificationof syngas yield and composition, with special attention to the hydrogen content in the syngas.The experimental results for two biomass samples were presented and based on performed semiquantitativeanalysis the evaluating of the possibilities for using considered feedstocks for green hydrogenproduction was done. Further discussions and comparisons with literature data were alsopresented.
AB  - Jedan od ciljeva koje je čovečanstvo postavilo do 2050. godine je dekarbonizacija u energetskom sektoru. Iz tog razloga upotreba vodonika kao alternativnog goriva izgleda kao moguće rešenje. Međutim, konvencionalni proces proizvodnje vodonika (elektroliza) sada indirektno čini više od 2% ukupne globalne emisije CO2. Jedan od scenarija za dostizanje postavljenih ciljeva uključuje dekarbonizaciju proizvodnje vodonika, što rezultira zelenim vodonikom. Jedan od načina za proizvodnju zelenog vodonika je moguć putem gasifikacije lignoceluloznih materijala (biomasa kao sirovina) u sintetički gas. Međutim, različiti parametri sirovine utiču na proces termohemijske konverzije, odnosno prinos i sastav sintetičkog gasa. Ovaj rad prezentuje novu semi-kvantitativnu analizu eksperimentalnih podataka dobijenih fundamentalnim eksperimne-talnim tehnikama, termogravimetrijom i masenom spektrometrijom. Prema predloženoj metodologiji na laboratorijskom nivou moguće je proceniti kvalitet sirovine za identifikaciju prinosa i sastava sintetičkog gasa, sa posebnom pažnjom na sadržaj vodonika u sintetičkom gasu. Predstavljeni su eksperimentalni rezultati za dva uzorka biomase i na osnovu izvršene semi-kvantitativne analize procenjena je mogućnostkorišćenja razmatranih sirovina za proizvodnju zelenog vodonika. Takođe je izvršena detaljna diskusija dobijenih rezultata kao i prikazana poređenja sa podacima iz lite-rature.)
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
C3  - ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification
T1  - Semi-kvantitativna analiza za procenu održive proizvodnje zelenog vodonika gasifikacijom biomase
VL  - 9
IS  - 1
SP  - 273
EP  - 280
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12278
ER  - 

@conference{
author = "Veljković, Filip and Janković, Bojan and Manić, Nebojša and Radojević, Miloš and Stojiljković, Milovan and Stajčić, Ivana and Ćurčić, Milica and Veličković, Suzana",
year = "2021",
abstract = "One of the goals that mankind has set for 2050 is decarbonization in the energy sector. For thatreason, the use of hydrogen as an alternative fuel looks like a possible solution. However, the conventionalhydrogen production process (electrolysis) now indirectly accounts for more than 2% oftotal global CO2 emissions. One of the scenarios to reaching set targets involves the decarbonizationof hydrogen production, resulting in green hydrogen. The one of the pathways for production of greenhydrogen is feasible within the gasification of lignocellulosic materials (biomass feedstock) into syngas.However, different feedstock parameters have an impact on the thermochemical conversion processi.e. syngas yield and composition. This paper presents the novel semi-quantitative analysis offundamental experimental data obtained by thermogravimetry and mass spectrometry. According tothe proposed methodology on the lab-scale level is possible to evaluate the feedstock quality for identificationof syngas yield and composition, with special attention to the hydrogen content in the syngas.The experimental results for two biomass samples were presented and based on performed semiquantitativeanalysis the evaluating of the possibilities for using considered feedstocks for green hydrogenproduction was done. Further discussions and comparisons with literature data were alsopresented., Jedan od ciljeva koje je čovečanstvo postavilo do 2050. godine je dekarbonizacija u energetskom sektoru. Iz tog razloga upotreba vodonika kao alternativnog goriva izgleda kao moguće rešenje. Međutim, konvencionalni proces proizvodnje vodonika (elektroliza) sada indirektno čini više od 2% ukupne globalne emisije CO2. Jedan od scenarija za dostizanje postavljenih ciljeva uključuje dekarbonizaciju proizvodnje vodonika, što rezultira zelenim vodonikom. Jedan od načina za proizvodnju zelenog vodonika je moguć putem gasifikacije lignoceluloznih materijala (biomasa kao sirovina) u sintetički gas. Međutim, različiti parametri sirovine utiču na proces termohemijske konverzije, odnosno prinos i sastav sintetičkog gasa. Ovaj rad prezentuje novu semi-kvantitativnu analizu eksperimentalnih podataka dobijenih fundamentalnim eksperimne-talnim tehnikama, termogravimetrijom i masenom spektrometrijom. Prema predloženoj metodologiji na laboratorijskom nivou moguće je proceniti kvalitet sirovine za identifikaciju prinosa i sastava sintetičkog gasa, sa posebnom pažnjom na sadržaj vodonika u sintetičkom gasu. Predstavljeni su eksperimentalni rezultati za dva uzorka biomase i na osnovu izvršene semi-kvantitativne analize procenjena je mogućnostkorišćenja razmatranih sirovina za proizvodnju zelenog vodonika. Takođe je izvršena detaljna diskusija dobijenih rezultata kao i prikazana poređenja sa podacima iz lite-rature.)",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS",
journal = "ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification, Semi-kvantitativna analiza za procenu održive proizvodnje zelenog vodonika gasifikacijom biomase",
volume = "9",
number = "1",
pages = "273-280",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12278"
}

Veljković, F., Janković, B., Manić, N., Radojević, M., Stojiljković, M., Stajčić, I., Ćurčić, M.,& Veličković, S.. (2021). A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification. in ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS., 9(1), 273-280.
https://hdl.handle.net/21.15107/rcub_vinar_12278

Veljković F, Janković B, Manić N, Radojević M, Stojiljković M, Stajčić I, Ćurčić M, Veličković S. A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification. in ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings. 2021;9(1):273-280.
https://hdl.handle.net/21.15107/rcub_vinar_12278 .

Veljković, Filip, Janković, Bojan, Manić, Nebojša, Radojević, Miloš, Stojiljković, Milovan, Stajčić, Ivana, Ćurčić, Milica, Veličković, Suzana, "A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification" in ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings, 9, no. 1 (2021):273-280,
https://hdl.handle.net/21.15107/rcub_vinar_12278 .

TY  - JOUR
AU  - Perić, Berislav
AU  - Juraj, Natalija Pantalon
AU  - Szalontai, Gábor
AU  - Veličković, Suzana
AU  - Veljković, Filip M.
AU  - Vikić-Topić, Dražen
AU  - Kirin, Srećko I.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9149
AB  - p-Disubstituted phenyldiketopiperazines 1 (R = H), 2 (R = NO2) and 3 (R = -N(CH3)2) were synthesized and characterized by NMR in solution and IR spectroscopy. The identity of the compounds was confirmed and their fragmentation analyzed by ESI-MS and HRMS spectrometry. X-ray single crystal structures revealed that the three compounds crystallize in space groups P21 (1), Pbca (2) and P21/c (3), respectively. The solid-state structures of 1–3 were further analyzed by a combination of solid-state NMR spectroscopy and GIPAW calculations. The NMR crystallography approach was used to analyze symmetry breaking of nearly centrosymmetric molecules in 1, and disorder of piperazine groups in crystal structure of 3. © 2021 Elsevier B.V.
T2  - Journal of Molecular Structure
T1  - A crystallographic and solid-state NMR study of 1,4-disubstituted 2,5-diketopiperazines
VL  - 1234
SP  - 130157
DO  - 10.1016/j.molstruc.2021.130157
ER  - 

@article{
author = "Perić, Berislav and Juraj, Natalija Pantalon and Szalontai, Gábor and Veličković, Suzana and Veljković, Filip M. and Vikić-Topić, Dražen and Kirin, Srećko I.",
year = "2021",
abstract = "p-Disubstituted phenyldiketopiperazines 1 (R = H), 2 (R = NO2) and 3 (R = -N(CH3)2) were synthesized and characterized by NMR in solution and IR spectroscopy. The identity of the compounds was confirmed and their fragmentation analyzed by ESI-MS and HRMS spectrometry. X-ray single crystal structures revealed that the three compounds crystallize in space groups P21 (1), Pbca (2) and P21/c (3), respectively. The solid-state structures of 1–3 were further analyzed by a combination of solid-state NMR spectroscopy and GIPAW calculations. The NMR crystallography approach was used to analyze symmetry breaking of nearly centrosymmetric molecules in 1, and disorder of piperazine groups in crystal structure of 3. © 2021 Elsevier B.V.",
journal = "Journal of Molecular Structure",
title = "A crystallographic and solid-state NMR study of 1,4-disubstituted 2,5-diketopiperazines",
volume = "1234",
pages = "130157",
doi = "10.1016/j.molstruc.2021.130157"
}

Perić, B., Juraj, N. P., Szalontai, G., Veličković, S., Veljković, F. M., Vikić-Topić, D.,& Kirin, S. I.. (2021). A crystallographic and solid-state NMR study of 1,4-disubstituted 2,5-diketopiperazines. in Journal of Molecular Structure, 1234, 130157.
https://doi.org/10.1016/j.molstruc.2021.130157

Perić B, Juraj NP, Szalontai G, Veličković S, Veljković FM, Vikić-Topić D, Kirin SI. A crystallographic and solid-state NMR study of 1,4-disubstituted 2,5-diketopiperazines. in Journal of Molecular Structure. 2021;1234:130157.
doi:10.1016/j.molstruc.2021.130157 .

Perić, Berislav, Juraj, Natalija Pantalon, Szalontai, Gábor, Veličković, Suzana, Veljković, Filip M., Vikić-Topić, Dražen, Kirin, Srećko I., "A crystallographic and solid-state NMR study of 1,4-disubstituted 2,5-diketopiperazines" in Journal of Molecular Structure, 1234 (2021):130157,
https://doi.org/10.1016/j.molstruc.2021.130157 . .

TY  - JOUR
AU  - Dimitrijević, Silvana B.
AU  - Veličković, Suzana
AU  - Ivanović, Aleksandra T.
AU  - Veljković, Filip M.
AU  - Jovanović, Milan M.
AU  - Kamberović, Željko
AU  - Dimitrijević, Stevan P.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10138
AB  - A cost-effective and simple hydrometallurgy procedure for recycling the diamond core drilling crowns by nitric acid leaching, followed by the sodium hydroxide leaching, has been developed. The effect of temperature, nitric acid/sodium hydroxide concentration, leaching time and stirring rate were studied. For the acid leaching process the optimal values for parameters were 60 °C, 1.0 M HNO3, 2.5 h, and 800 rpm. It has been noted that the key factors in the alkaline leaching process were temperature and NaOH concentration. For the alkaline leaching, the optimal parameters were 100 °C, 40% concentration of NaOH solution, and leaching time of 4 h. Identification and characterisation of products in all technological processes were performed by X-Ray Diffraction (XRD), scanning electron microscope using energy-dispersive X-ray spectroscopy (SEM-EDS), and laser desorption ionisation mass spectrometry (LDI-MS). The analysis of solutions in all phases was performed by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The use of LDI-MS as a new approach to identify the products after phases in the recycling process was an important part of the study, and the results were consistent with the XRD analysis. The total tungsten recovery was over 95.6%, with a high purity of the obtained tungsten trioxide.
T2  - International Journal of Refractory Metals and Hard Materials
T2  - International Journal of Refractory Metals and Hard MaterialsInternational Journal of Refractory Metals and Hard Materials
T1  - Recovery of tungsten trioxide from waste diamond core drilling crowns by nitric acid leaching
VL  - 101
SP  - 105695
DO  - 10.1016/j.ijrmhm.2021.105695
ER  - 

@article{
author = "Dimitrijević, Silvana B. and Veličković, Suzana and Ivanović, Aleksandra T. and Veljković, Filip M. and Jovanović, Milan M. and Kamberović, Željko and Dimitrijević, Stevan P.",
year = "2021",
abstract = "A cost-effective and simple hydrometallurgy procedure for recycling the diamond core drilling crowns by nitric acid leaching, followed by the sodium hydroxide leaching, has been developed. The effect of temperature, nitric acid/sodium hydroxide concentration, leaching time and stirring rate were studied. For the acid leaching process the optimal values for parameters were 60 °C, 1.0 M HNO3, 2.5 h, and 800 rpm. It has been noted that the key factors in the alkaline leaching process were temperature and NaOH concentration. For the alkaline leaching, the optimal parameters were 100 °C, 40% concentration of NaOH solution, and leaching time of 4 h. Identification and characterisation of products in all technological processes were performed by X-Ray Diffraction (XRD), scanning electron microscope using energy-dispersive X-ray spectroscopy (SEM-EDS), and laser desorption ionisation mass spectrometry (LDI-MS). The analysis of solutions in all phases was performed by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The use of LDI-MS as a new approach to identify the products after phases in the recycling process was an important part of the study, and the results were consistent with the XRD analysis. The total tungsten recovery was over 95.6%, with a high purity of the obtained tungsten trioxide.",
journal = "International Journal of Refractory Metals and Hard Materials, International Journal of Refractory Metals and Hard MaterialsInternational Journal of Refractory Metals and Hard Materials",
title = "Recovery of tungsten trioxide from waste diamond core drilling crowns by nitric acid leaching",
volume = "101",
pages = "105695",
doi = "10.1016/j.ijrmhm.2021.105695"
}

Dimitrijević, S. B., Veličković, S., Ivanović, A. T., Veljković, F. M., Jovanović, M. M., Kamberović, Ž.,& Dimitrijević, S. P.. (2021). Recovery of tungsten trioxide from waste diamond core drilling crowns by nitric acid leaching. in International Journal of Refractory Metals and Hard Materials, 101, 105695.
https://doi.org/10.1016/j.ijrmhm.2021.105695

Dimitrijević SB, Veličković S, Ivanović AT, Veljković FM, Jovanović MM, Kamberović Ž, Dimitrijević SP. Recovery of tungsten trioxide from waste diamond core drilling crowns by nitric acid leaching. in International Journal of Refractory Metals and Hard Materials. 2021;101:105695.
doi:10.1016/j.ijrmhm.2021.105695 .

Dimitrijević, Silvana B., Veličković, Suzana, Ivanović, Aleksandra T., Veljković, Filip M., Jovanović, Milan M., Kamberović, Željko, Dimitrijević, Stevan P., "Recovery of tungsten trioxide from waste diamond core drilling crowns by nitric acid leaching" in International Journal of Refractory Metals and Hard Materials, 101 (2021):105695,
https://doi.org/10.1016/j.ijrmhm.2021.105695 . .

TY  - JOUR
AU  - Srivastava, Ambrish Kumar
AU  - Anusiewicz, Iwona
AU  - Veličković, Suzana
AU  - Sun, Wei-Ming
AU  - Misra, Neeraj
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10050
T2  - Frontiers in Chemistry
T1  - Editorial: Atomic Clusters: Theory & Experiments
VL  - 9
SP  - 954
DO  - 10.3389/fchem.2021.795113
ER  - 

@article{
author = "Srivastava, Ambrish Kumar and Anusiewicz, Iwona and Veličković, Suzana and Sun, Wei-Ming and Misra, Neeraj",
year = "2021",
journal = "Frontiers in Chemistry",
title = "Editorial: Atomic Clusters: Theory & Experiments",
volume = "9",
pages = "954",
doi = "10.3389/fchem.2021.795113"
}

Srivastava, A. K., Anusiewicz, I., Veličković, S., Sun, W.,& Misra, N.. (2021). Editorial: Atomic Clusters: Theory & Experiments. in Frontiers in Chemistry, 9, 954.
https://doi.org/10.3389/fchem.2021.795113

Srivastava AK, Anusiewicz I, Veličković S, Sun W, Misra N. Editorial: Atomic Clusters: Theory & Experiments. in Frontiers in Chemistry. 2021;9:954.
doi:10.3389/fchem.2021.795113 .

Srivastava, Ambrish Kumar, Anusiewicz, Iwona, Veličković, Suzana, Sun, Wei-Ming, Misra, Neeraj, "Editorial: Atomic Clusters: Theory & Experiments" in Frontiers in Chemistry, 9 (2021):954,
https://doi.org/10.3389/fchem.2021.795113 . .

TY  - JOUR
AU  - Dimitrijević, Stevan P.
AU  - Vurdelja, Borislava D.
AU  - Dimitrijević, Silvana B.
AU  - Veljković, Filip M.
AU  - Kamberović, Željko
AU  - Veličković, Suzana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8569
AB  - Corrosion products formed on the surface of two silver brazing alloys after the potentiostatic polarization in 3.5% sodium chloride solution were characterized by the standard methods such as, the X-ray diffraction, micro-Raman spectroscopy, and scanning electron microscopy with energy-dispersive spectroscopy. This paper presents the results of a laser desorption/ionization mass spectrometry (LDI MS) analysis as a new approach to the characterization of corrosion products. The potential of the anodic polarization was 0.5 V versus saturated calomel electrode, and the process duration was 300 s. The corrosion layers on both investigated alloys were similar in composition with cuprous chloride and silver chloride as the main components and had strong indications of cuprous oxide formation. The major difference between these two layers was the existence of zinc hydroxychloride as the corrosion product of Ag-Cu-Zn alloy. Palladium compounds were not found in the case of Ag-Cu-Pd alloy. The results of different methods have shown a good consistency. Complementarity between the used methods was useful in the interpretation of the results for each used method. This study has demonstrated that LDI MS can be used as an efficient additional method together with the traditional ones.
T2  - Corrosion Reviews
T1  - Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys
VL  - 38
IS  - 2
SP  - 111
EP  - 125
DO  - 10.1515/corrrev-2019-0067
ER  - 

@article{
author = "Dimitrijević, Stevan P. and Vurdelja, Borislava D. and Dimitrijević, Silvana B. and Veljković, Filip M. and Kamberović, Željko and Veličković, Suzana",
year = "2020",
abstract = "Corrosion products formed on the surface of two silver brazing alloys after the potentiostatic polarization in 3.5% sodium chloride solution were characterized by the standard methods such as, the X-ray diffraction, micro-Raman spectroscopy, and scanning electron microscopy with energy-dispersive spectroscopy. This paper presents the results of a laser desorption/ionization mass spectrometry (LDI MS) analysis as a new approach to the characterization of corrosion products. The potential of the anodic polarization was 0.5 V versus saturated calomel electrode, and the process duration was 300 s. The corrosion layers on both investigated alloys were similar in composition with cuprous chloride and silver chloride as the main components and had strong indications of cuprous oxide formation. The major difference between these two layers was the existence of zinc hydroxychloride as the corrosion product of Ag-Cu-Zn alloy. Palladium compounds were not found in the case of Ag-Cu-Pd alloy. The results of different methods have shown a good consistency. Complementarity between the used methods was useful in the interpretation of the results for each used method. This study has demonstrated that LDI MS can be used as an efficient additional method together with the traditional ones.",
journal = "Corrosion Reviews",
title = "Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys",
volume = "38",
number = "2",
pages = "111-125",
doi = "10.1515/corrrev-2019-0067"
}

Dimitrijević, S. P., Vurdelja, B. D., Dimitrijević, S. B., Veljković, F. M., Kamberović, Ž.,& Veličković, S.. (2020). Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys. in Corrosion Reviews, 38(2), 111-125.
https://doi.org/10.1515/corrrev-2019-0067

Dimitrijević SP, Vurdelja BD, Dimitrijević SB, Veljković FM, Kamberović Ž, Veličković S. Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys. in Corrosion Reviews. 2020;38(2):111-125.
doi:10.1515/corrrev-2019-0067 .

Dimitrijević, Stevan P., Vurdelja, Borislava D., Dimitrijević, Silvana B., Veljković, Filip M., Kamberović, Željko, Veličković, Suzana, "Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys" in Corrosion Reviews, 38, no. 2 (2020):111-125,
https://doi.org/10.1515/corrrev-2019-0067 . .