TY  - CONF
AU  - Radovanović, Lidija
AU  - Vulić, Predrag
AU  - Jagličić, Zvonko
AU  - Radovanović, Željko
AU  - Zeković, Ivana
AU  - Rogan, Jelena
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6699
AB  - Reakcijom izmene liganada sintetisan je dvofazni materijal I izgrađen od kompleksa
[Mn(dipya)(H2O)4](tpht) i {[Zn(dipya)(tpht)]·H2O}n(tpht = anjon tereftalne kiseline,
dipya = 2,2’-dipiridilamin) i okarakterisan je rendgenskom difrakcijom praha (XRPD),
elementarnom analizom i IC-spektroskopijom. Ritveldovom metodom utvrđena je
struktura obe faze na osnovu poznatih kristalnih struktura kompleksa
[Mn(dipya)(H2O)4](tpht) (monokliničan sistem, prostorna grupa P21/c, a = 7,62769(7),
b = 23,8578(2), c = 11,09364(20) Å, β = 102,2997(10) °) i {[Zn(dipya)(tpht)]·H2O}n
(monokliničan sistem, prostorna grupa P21/n, a = 9,83498(12), b = 14,40421(15),
c = 12,27228(16) Å, β = 95,7954(9) °), koje su određene rendgenskom strukturnom
analizom [1, 2]. Odnos faza [Mn(dipya)(H2O)4](tpht) i {[Zn(dipya)(tpht)]·H2O}n u I
iznosio je 31:69 mas. %. Rezultati utačnjavanja Ritveldovom metodom u dobroj su
saglasnosti, sa neznatnim odstupanjem od strukturnih parametara originalnih struktura:
Rp: 4,28, Rwp: 5,60, Rexp: 4,42, χ
2
: 1,60, RB: 2,39, Rf: 1,99 za Mn(II)-fazu i RB: 3,15,
Rf: 3,13 za Zn(II)-fazu. Mn(II)-fazu obrazuju diskretne kompleksne jedinke
[Mn(dipya)(H2O)4](tpht) u kojima tpht ima ulogu jona suprotnog naelektrisanja sa
deformisano-oktaedarskom geometrijom Mn(II)-jona. Zn(II)-faza izgrađena je od cikcak lanaca {[Zn(dipya)(tpht)]·H2O}n, sa dva kristalografski različita mostovna tphtliganda: bis-helatnim i bis-monodentatnim. Zn(II)-jon se nalazi u deformisanom
kvadratno-piramidalnom okruženju. Termičko ponašanje I ispitano je simultanom
TG/DSC-analizom u atmosferi vazduha i azota. XRPD identifikacija čvrstog ostatka
nakon analize u atmosferi vazduha pokazala je prisustvo dve faze: ZnO (ICDD PDF 36-
1451) i ZnMn2O4 (ICDD PDF 24-1123), čija je morfologija ispitana skenirajućom
elektronskom mikroskopijom (SEM). Merenjem magnetne susceptibilnosti na niskim
temperaturama utvrđene su magnetne interakcije u I i analizirana su fotoluminescentna
svojstva na sobnoj temperaturi.
AB  - A biphasic material I that is composed of complexes [Mn(dipya)(H2O)4](tpht) and
{[Zn(dipya)(tpht)]·H2O}n(tpht = anion of terephthalic acid, dipya = 2,2’-dipyridylamine)
has been synthesized by the ligand exchange reaction and characterized by X-ray powder
diffraction (XRPD), elemental analysis and IR spectroscopy. The structural
characterization of each phase was performed by Rietveld method according to the
known crystal structures of [Mn(dipya)(H2O)4](tpht) (monoclinic, space group P21/c,
a = 7,62769(7), b = 23,8578(2), c = 11,09364(20) Å, β = 102,2997(10) °) and
{[Zn(dipya)(tpht)]·H2O}n (monoclinic, space group P21/n, a = 9,83498(12),
b = 14,40421(15), c = 12,27228(16) Å, β = 95,7954(9) °) determined from single crystal
data [1, 2]. [Mn(dipya)(H2O)4](tpht) to {[Zn(dipya)(tpht)]·H2O}n phase-ratio in I was
31:69 wt. %. The Rietveld refinement results were in a good agreement with a minor
deviation of the final structural parameters from the original structures: Rp: 4.28,
Rwp: 5.60, Rexp: 4.42, χ
2
: 1.60, RB: 2.39, Rf: 1.99 for the Mn(II)-phase, and RB: 3.15,
Rf: 3.13 for the Zn(II)-phase. The Mn(II)-phase consists of discrete complex units
[Mn(dipya)(H2O)4](tpht) in which the tpht is counter anion and with distorted octahedral
geometry of Mn(II) ion. The Zn(II)-phase is comprised of zigzag chains of
{[Zn(dipya)(tpht)]·H2O}n, with two crystallographically different tpht bridges: bischelate and bis-monodentate and Zn(II) ion in a distorted square pyramidal environment.
The thermal behavior of I was studied by simultaneous TG/DSC analysis in both air and
N2 atmospheres. XRPD identification of the solid residue after analysis in air atmosphere
confirmed the presence of two phases: ZnO (ICDD PDF 36-1451) and ZnMn2O4
(ICDD PDF 24-1123), whose morphologies were analyzed using scanning electron
microscopy (SEM). The magnetic susceptibility measurements at low temperatures of I
were performed in order to examine the magnetic interactions and photoluminescence
properties at room temperature have been investigated.
PB  - Beograd : Srpsko kristalografsko društvo = Serbian Crystallographic Society
C3  - Izvodi radova / XXV konferencija Srpskog kristalografskog društva = Abstracts / 25th Conference of the Serbian Crystallographic Society, Bajina Bašta, 21-23. jun 2018
T1  - SINTEZA, STRUKTURA I SVOJSTVA DVOFAZNOG Mn(II)/Zn(II) MATERIJALA
T1  - SYNTHESIS, STRUCTURE AND PROPERTIES OF Mn(II)/Zn(II) BIPHASIC MATERIAL
EP  - 87
SP  - 86
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6699
ER  - 

@conference{
author = "Radovanović, Lidija and Vulić, Predrag and Jagličić, Zvonko and Radovanović, Željko and Zeković, Ivana and Rogan, Jelena",
year = "2018",
abstract = "Reakcijom izmene liganada sintetisan je dvofazni materijal I izgrađen od kompleksa
[Mn(dipya)(H2O)4](tpht) i {[Zn(dipya)(tpht)]·H2O}n(tpht = anjon tereftalne kiseline,
dipya = 2,2’-dipiridilamin) i okarakterisan je rendgenskom difrakcijom praha (XRPD),
elementarnom analizom i IC-spektroskopijom. Ritveldovom metodom utvrđena je
struktura obe faze na osnovu poznatih kristalnih struktura kompleksa
[Mn(dipya)(H2O)4](tpht) (monokliničan sistem, prostorna grupa P21/c, a = 7,62769(7),
b = 23,8578(2), c = 11,09364(20) Å, β = 102,2997(10) °) i {[Zn(dipya)(tpht)]·H2O}n
(monokliničan sistem, prostorna grupa P21/n, a = 9,83498(12), b = 14,40421(15),
c = 12,27228(16) Å, β = 95,7954(9) °), koje su određene rendgenskom strukturnom
analizom [1, 2]. Odnos faza [Mn(dipya)(H2O)4](tpht) i {[Zn(dipya)(tpht)]·H2O}n u I
iznosio je 31:69 mas. %. Rezultati utačnjavanja Ritveldovom metodom u dobroj su
saglasnosti, sa neznatnim odstupanjem od strukturnih parametara originalnih struktura:
Rp: 4,28, Rwp: 5,60, Rexp: 4,42, χ
2
: 1,60, RB: 2,39, Rf: 1,99 za Mn(II)-fazu i RB: 3,15,
Rf: 3,13 za Zn(II)-fazu. Mn(II)-fazu obrazuju diskretne kompleksne jedinke
[Mn(dipya)(H2O)4](tpht) u kojima tpht ima ulogu jona suprotnog naelektrisanja sa
deformisano-oktaedarskom geometrijom Mn(II)-jona. Zn(II)-faza izgrađena je od cikcak lanaca {[Zn(dipya)(tpht)]·H2O}n, sa dva kristalografski različita mostovna tphtliganda: bis-helatnim i bis-monodentatnim. Zn(II)-jon se nalazi u deformisanom
kvadratno-piramidalnom okruženju. Termičko ponašanje I ispitano je simultanom
TG/DSC-analizom u atmosferi vazduha i azota. XRPD identifikacija čvrstog ostatka
nakon analize u atmosferi vazduha pokazala je prisustvo dve faze: ZnO (ICDD PDF 36-
1451) i ZnMn2O4 (ICDD PDF 24-1123), čija je morfologija ispitana skenirajućom
elektronskom mikroskopijom (SEM). Merenjem magnetne susceptibilnosti na niskim
temperaturama utvrđene su magnetne interakcije u I i analizirana su fotoluminescentna
svojstva na sobnoj temperaturi., A biphasic material I that is composed of complexes [Mn(dipya)(H2O)4](tpht) and
{[Zn(dipya)(tpht)]·H2O}n(tpht = anion of terephthalic acid, dipya = 2,2’-dipyridylamine)
has been synthesized by the ligand exchange reaction and characterized by X-ray powder
diffraction (XRPD), elemental analysis and IR spectroscopy. The structural
characterization of each phase was performed by Rietveld method according to the
known crystal structures of [Mn(dipya)(H2O)4](tpht) (monoclinic, space group P21/c,
a = 7,62769(7), b = 23,8578(2), c = 11,09364(20) Å, β = 102,2997(10) °) and
{[Zn(dipya)(tpht)]·H2O}n (monoclinic, space group P21/n, a = 9,83498(12),
b = 14,40421(15), c = 12,27228(16) Å, β = 95,7954(9) °) determined from single crystal
data [1, 2]. [Mn(dipya)(H2O)4](tpht) to {[Zn(dipya)(tpht)]·H2O}n phase-ratio in I was
31:69 wt. %. The Rietveld refinement results were in a good agreement with a minor
deviation of the final structural parameters from the original structures: Rp: 4.28,
Rwp: 5.60, Rexp: 4.42, χ
2
: 1.60, RB: 2.39, Rf: 1.99 for the Mn(II)-phase, and RB: 3.15,
Rf: 3.13 for the Zn(II)-phase. The Mn(II)-phase consists of discrete complex units
[Mn(dipya)(H2O)4](tpht) in which the tpht is counter anion and with distorted octahedral
geometry of Mn(II) ion. The Zn(II)-phase is comprised of zigzag chains of
{[Zn(dipya)(tpht)]·H2O}n, with two crystallographically different tpht bridges: bischelate and bis-monodentate and Zn(II) ion in a distorted square pyramidal environment.
The thermal behavior of I was studied by simultaneous TG/DSC analysis in both air and
N2 atmospheres. XRPD identification of the solid residue after analysis in air atmosphere
confirmed the presence of two phases: ZnO (ICDD PDF 36-1451) and ZnMn2O4
(ICDD PDF 24-1123), whose morphologies were analyzed using scanning electron
microscopy (SEM). The magnetic susceptibility measurements at low temperatures of I
were performed in order to examine the magnetic interactions and photoluminescence
properties at room temperature have been investigated.",
publisher = "Beograd : Srpsko kristalografsko društvo = Serbian Crystallographic Society",
journal = "Izvodi radova / XXV konferencija Srpskog kristalografskog društva = Abstracts / 25th Conference of the Serbian Crystallographic Society, Bajina Bašta, 21-23. jun 2018",
title = "SINTEZA, STRUKTURA I SVOJSTVA DVOFAZNOG Mn(II)/Zn(II) MATERIJALA, SYNTHESIS, STRUCTURE AND PROPERTIES OF Mn(II)/Zn(II) BIPHASIC MATERIAL",
pages = "87-86",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6699"
}

Radovanović, L., Vulić, P., Jagličić, Z., Radovanović, Ž., Zeković, I.,& Rogan, J.. (2018). SINTEZA, STRUKTURA I SVOJSTVA DVOFAZNOG Mn(II)/Zn(II) MATERIJALA. in Izvodi radova / XXV konferencija Srpskog kristalografskog društva = Abstracts / 25th Conference of the Serbian Crystallographic Society, Bajina Bašta, 21-23. jun 2018
Beograd : Srpsko kristalografsko društvo = Serbian Crystallographic Society., 86-87.
https://hdl.handle.net/21.15107/rcub_technorep_6699

Radovanović L, Vulić P, Jagličić Z, Radovanović Ž, Zeković I, Rogan J. SINTEZA, STRUKTURA I SVOJSTVA DVOFAZNOG Mn(II)/Zn(II) MATERIJALA. in Izvodi radova / XXV konferencija Srpskog kristalografskog društva = Abstracts / 25th Conference of the Serbian Crystallographic Society, Bajina Bašta, 21-23. jun 2018. 2018;:86-87.
https://hdl.handle.net/21.15107/rcub_technorep_6699 .

Radovanović, Lidija, Vulić, Predrag, Jagličić, Zvonko, Radovanović, Željko, Zeković, Ivana, Rogan, Jelena, "SINTEZA, STRUKTURA I SVOJSTVA DVOFAZNOG Mn(II)/Zn(II) MATERIJALA" in Izvodi radova / XXV konferencija Srpskog kristalografskog društva = Abstracts / 25th Conference of the Serbian Crystallographic Society, Bajina Bašta, 21-23. jun 2018 (2018):86-87,
https://hdl.handle.net/21.15107/rcub_technorep_6699 .

TY  - CONF
AU  - Radovanović, Lidija
AU  - Vulić, Predrag
AU  - Radovanović, Željko
AU  - Balanč, Bojana
AU  - Simović, Bojana
AU  - Zeković, Ivana
AU  - Dramićanin, Miroslav
AU  - Rogan, Jelena
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3800
AB  - Transition metal oxides are important materials that have found many applications,
as capacitors, sensors or in energy storage [1]. Synthesis of these compounds
has been realized by various methods, such as hydro(solvo)thermal synthesis,
precipitation, microwave synthesis or sol-gel synthesis [2]. Recently, the thermolysis
of coordination compounds as precursors has been considered as a new approach in
obtaining functional nanosized materials. [3]. In this way, by selecting the proper
precursor, it is possible to control the phase composition, morphology and particle
size of a resulting material [3]. The biphasic powder composed of ZnO (zincite) and ZnMn2O4 (hetaerolite), (I) has been
obtained by thermolysis of bimetallic complex [MnZn2(dipya)3(tpht)3(H2O)4]·2H2O
(dipya = 2,2’-dipyridylamine, tpht = dianion of 1,4-benzenedicarboxylic acid) at
450 °C during 1 h in air atmosphere. Scanning Electron Microscopy (SEM) was
used to investigate the morphology of I (Figure 1). It can be observed that the
morphology consists of deformed spherical grains of ZnO with an average diameter
of 67 nm and elliptical grains of hetaerolite whose average diameter and length
were 156 and 290 nm, respectively. The X-ray powder diffraction (XRPD) was
applied to investigate the structure of I. In Figure 2 two-phase Rietveld refinement pattern of I is presented (ZnO to ZnMn2O4 phase-ratio of 62:38 wt. %). The main
crystallographic data and Rietveld refinement parameters for ZnO phase are:
hexagonal, space group P63mc, a = 3.2574(1), c = 5.2175(2) Å, V = 47.945(3) Å3
; for
ZnMn2O4 phase are: tetragonal, space group I41/amd, a = 5.7299(3), c = 9.3000(8) Å,
V = 305.34(3) Å3
; Rwp = 4.80 %, Rp = 3.82 %, Rexp = 3.80 % and χ2
 = 1.5960. UVVis-NIR absorption spectrum was measured in order to investigate the direct band
gap (Eg) of I. Due to the existence of two phases in I, two different Eg values of
2.4 and 3.3 eV for ZnMn2O4 and ZnO phase, respectively, were determined using
Kubelka-Munk function. The mean size, polydispersity index (PDI) and zeta
potential of spherical grains were measured using Zetasizer Nano Series, Nano ZS.
The mean size was 418.6±53.1 nm while PDI value was found to be 0.354±0.099.
Relatively high values of PDI and low apostate value of zeta potential (–6.55 mV)
are indications of incipient instability of colloidal dispersion of I, probably due to the
formation of agglomerates [4, 5]. Photoluminescence measurements were carried
out at room temperature on Fluorolog-3 Model FL3-221 spectrofluorimeter system
upon excitation at 350 nm, in order to study the optical properties of I. This analysis
revealed one band centred at 422 nm in the blue region of the visible part of the
spectrum, which can possibly be associated with defects in the crystal structure of
the ZnO phase [6].
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4
EP  - 173
SP  - 171
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8737
ER  - 

@conference{
author = "Radovanović, Lidija and Vulić, Predrag and Radovanović, Željko and Balanč, Bojana and Simović, Bojana and Zeković, Ivana and Dramićanin, Miroslav and Rogan, Jelena",
year = "2018",
abstract = "Transition metal oxides are important materials that have found many applications,
as capacitors, sensors or in energy storage [1]. Synthesis of these compounds
has been realized by various methods, such as hydro(solvo)thermal synthesis,
precipitation, microwave synthesis or sol-gel synthesis [2]. Recently, the thermolysis
of coordination compounds as precursors has been considered as a new approach in
obtaining functional nanosized materials. [3]. In this way, by selecting the proper
precursor, it is possible to control the phase composition, morphology and particle
size of a resulting material [3]. The biphasic powder composed of ZnO (zincite) and ZnMn2O4 (hetaerolite), (I) has been
obtained by thermolysis of bimetallic complex [MnZn2(dipya)3(tpht)3(H2O)4]·2H2O
(dipya = 2,2’-dipyridylamine, tpht = dianion of 1,4-benzenedicarboxylic acid) at
450 °C during 1 h in air atmosphere. Scanning Electron Microscopy (SEM) was
used to investigate the morphology of I (Figure 1). It can be observed that the
morphology consists of deformed spherical grains of ZnO with an average diameter
of 67 nm and elliptical grains of hetaerolite whose average diameter and length
were 156 and 290 nm, respectively. The X-ray powder diffraction (XRPD) was
applied to investigate the structure of I. In Figure 2 two-phase Rietveld refinement pattern of I is presented (ZnO to ZnMn2O4 phase-ratio of 62:38 wt. %). The main
crystallographic data and Rietveld refinement parameters for ZnO phase are:
hexagonal, space group P63mc, a = 3.2574(1), c = 5.2175(2) Å, V = 47.945(3) Å3
; for
ZnMn2O4 phase are: tetragonal, space group I41/amd, a = 5.7299(3), c = 9.3000(8) Å,
V = 305.34(3) Å3
; Rwp = 4.80 %, Rp = 3.82 %, Rexp = 3.80 % and χ2
 = 1.5960. UVVis-NIR absorption spectrum was measured in order to investigate the direct band
gap (Eg) of I. Due to the existence of two phases in I, two different Eg values of
2.4 and 3.3 eV for ZnMn2O4 and ZnO phase, respectively, were determined using
Kubelka-Munk function. The mean size, polydispersity index (PDI) and zeta
potential of spherical grains were measured using Zetasizer Nano Series, Nano ZS.
The mean size was 418.6±53.1 nm while PDI value was found to be 0.354±0.099.
Relatively high values of PDI and low apostate value of zeta potential (–6.55 mV)
are indications of incipient instability of colloidal dispersion of I, probably due to the
formation of agglomerates [4, 5]. Photoluminescence measurements were carried
out at room temperature on Fluorolog-3 Model FL3-221 spectrofluorimeter system
upon excitation at 350 nm, in order to study the optical properties of I. This analysis
revealed one band centred at 422 nm in the blue region of the visible part of the
spectrum, which can possibly be associated with defects in the crystal structure of
the ZnO phase [6].",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4",
pages = "173-171",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8737"
}

Radovanović, L., Vulić, P., Radovanović, Ž., Balanč, B., Simović, B., Zeković, I., Dramićanin, M.,& Rogan, J.. (2018). Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 171-173.
https://hdl.handle.net/21.15107/rcub_vinar_8737

Radovanović L, Vulić P, Radovanović Ž, Balanč B, Simović B, Zeković I, Dramićanin M, Rogan J. Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:171-173.
https://hdl.handle.net/21.15107/rcub_vinar_8737 .

Radovanović, Lidija, Vulić, Predrag, Radovanović, Željko, Balanč, Bojana, Simović, Bojana, Zeković, Ivana, Dramićanin, Miroslav, Rogan, Jelena, "Synthesis, Structure, Morphology and Properties of Biphasic ZnO–ZnMn2O4" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):171-173,
https://hdl.handle.net/21.15107/rcub_vinar_8737 .

TY  - CONF
AU  - Zdravković, Jelena D.
AU  - Radovanović, Lidija D.
AU  - Simović, Bojana M.
AU  - Poleti, Dejan D.
AU  - Rogan, Jelena R.
AU  - Zeković, Ivana
AU  - Dramićanin, Miroslav D.
AU  - Mihajlovski, Katarina R.
AU  - Radovanović, Željko M.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6700
AB  - Studies related to the synthesis of nanosized ZnO as the antibacterial agent have become an
interdisciplinary area gathering chemists, physicists, biologists, and medics. The broad scope
of materials based on ZnO resulted in the development of various techniques for its
preparation. Considering the dependence of particle shape and size onto physical and
chemical properties of ZnO, the synthesis procedure is of major importance.
In this work, an unconventional methodology of synthesis is proposed for obtaining
nanosized ZnO. Polymeric zinc complex containing 2,2’-dipyridylamine (dipya) and dianion
of 1,3-benzenedicarboxylic acid (ipht), [Zn(dipya)(ipht)]n, was used as precursor. Besides
the crystal structure of [Zn(dipya)(ipht)]n which was already published [1], the luminescent
properties are presented in this work. Also, the amazing antibacterial activity of this
precursor prompted us to investigate the relationship between the crystal structure and
thermal properties, especially if we bear in mind the lack of similar studies in the literature.
Therefore, the mechanism and kinetics of its degradation was investigated under nonisothermal conditions in nitrogen and air atmospheres.
Degradation enthalpies, thermodynamic activation parameters, pre-exponential factor, A,
and the apparent activation energy, Ea, were determined for each step using Kissinger’s and
Ozawa’s equations. The complexity of degradation steps has been analyzed using
isoconversional methods. TG/DCS data were collected at four different heating rates: 10, 15,
20 and 25 ºC min
–1
, while the formation of nanosized ZnO was confirmed using XRPD and
FESEM techniques. The influence of precursor on the crystallite size and morphology of the
resulting ZnO along with its antibacterial activity was examined. The obtained results will be
discussed and compared.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Science and Engineering, December 7-9, 2016, Belgrade, Serbia
T1  - Decomposition mechanism and kinetics of zinc–isophthalate complex with 2,2’-dipyridylamine as a precursor for obtaining nanosized zinc oxide
SP  - 47
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6700
ER  - 

@conference{
author = "Zdravković, Jelena D. and Radovanović, Lidija D. and Simović, Bojana M. and Poleti, Dejan D. and Rogan, Jelena R. and Zeković, Ivana and Dramićanin, Miroslav D. and Mihajlovski, Katarina R. and Radovanović, Željko M.",
year = "2016",
abstract = "Studies related to the synthesis of nanosized ZnO as the antibacterial agent have become an
interdisciplinary area gathering chemists, physicists, biologists, and medics. The broad scope
of materials based on ZnO resulted in the development of various techniques for its
preparation. Considering the dependence of particle shape and size onto physical and
chemical properties of ZnO, the synthesis procedure is of major importance.
In this work, an unconventional methodology of synthesis is proposed for obtaining
nanosized ZnO. Polymeric zinc complex containing 2,2’-dipyridylamine (dipya) and dianion
of 1,3-benzenedicarboxylic acid (ipht), [Zn(dipya)(ipht)]n, was used as precursor. Besides
the crystal structure of [Zn(dipya)(ipht)]n which was already published [1], the luminescent
properties are presented in this work. Also, the amazing antibacterial activity of this
precursor prompted us to investigate the relationship between the crystal structure and
thermal properties, especially if we bear in mind the lack of similar studies in the literature.
Therefore, the mechanism and kinetics of its degradation was investigated under nonisothermal conditions in nitrogen and air atmospheres.
Degradation enthalpies, thermodynamic activation parameters, pre-exponential factor, A,
and the apparent activation energy, Ea, were determined for each step using Kissinger’s and
Ozawa’s equations. The complexity of degradation steps has been analyzed using
isoconversional methods. TG/DCS data were collected at four different heating rates: 10, 15,
20 and 25 ºC min
–1
, while the formation of nanosized ZnO was confirmed using XRPD and
FESEM techniques. The influence of precursor on the crystallite size and morphology of the
resulting ZnO along with its antibacterial activity was examined. The obtained results will be
discussed and compared.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Science and Engineering, December 7-9, 2016, Belgrade, Serbia",
title = "Decomposition mechanism and kinetics of zinc–isophthalate complex with 2,2’-dipyridylamine as a precursor for obtaining nanosized zinc oxide",
pages = "47",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6700"
}

Zdravković, J. D., Radovanović, L. D., Simović, B. M., Poleti, D. D., Rogan, J. R., Zeković, I., Dramićanin, M. D., Mihajlovski, K. R.,& Radovanović, Ž. M.. (2016). Decomposition mechanism and kinetics of zinc–isophthalate complex with 2,2’-dipyridylamine as a precursor for obtaining nanosized zinc oxide. in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Science and Engineering, December 7-9, 2016, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 47.
https://hdl.handle.net/21.15107/rcub_technorep_6700

Zdravković JD, Radovanović LD, Simović BM, Poleti DD, Rogan JR, Zeković I, Dramićanin MD, Mihajlovski KR, Radovanović ŽM. Decomposition mechanism and kinetics of zinc–isophthalate complex with 2,2’-dipyridylamine as a precursor for obtaining nanosized zinc oxide. in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Science and Engineering, December 7-9, 2016, Belgrade, Serbia. 2016;:47.
https://hdl.handle.net/21.15107/rcub_technorep_6700 .

Zdravković, Jelena D., Radovanović, Lidija D., Simović, Bojana M., Poleti, Dejan D., Rogan, Jelena R., Zeković, Ivana, Dramićanin, Miroslav D., Mihajlovski, Katarina R., Radovanović, Željko M., "Decomposition mechanism and kinetics of zinc–isophthalate complex with 2,2’-dipyridylamine as a precursor for obtaining nanosized zinc oxide" in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Science and Engineering, December 7-9, 2016, Belgrade, Serbia (2016):47,
https://hdl.handle.net/21.15107/rcub_technorep_6700 .