TY  - CONF
AU  - Milojković, Natalija
AU  - Simović, Bojana
AU  - Žunić, Milan
AU  - Radovanović, Lidija
AU  - Dapčević, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7402
AB  - It is well known that titanium dioxide is usually used as a photocatalyst due to its nontoxicity, low cost, and stability. Conductive polymer, polypyrrole (PPy) is also appropriate for photocatalytic application being stable and easy to synthesize. The aim of this study was to obtain TiO2/PPy composites reaching higher photocatalytic efficiency compared to pure TiO2. Therefore, TiO2 was synthesized by the hydrothermal route, while PPy was obtained by the chemical oxidative polymerization method. TiO2/x% PPy nanocomposites (x = 0, 0.5, 1, 1.5, 3, 5 wt.%) were prepared by hand-mixing of powders in agate mortar for 30 min in order to find the optimal PPy content. Obtained materials were characterized by XRD, FTIR, TG/DSC, FESEM, and UV-Vis methods while their photocatalytic activity was estimated towards degradation of Reactive Orange 16 dye (RO16). A kinetic study was performed and a detailed mechanism of RO16 photocatalytic degradation in the presence of TiO2/PPy composites was proposed based on scavenger tests. The results showed that, despite PPy addition, TiO2 was present in anatase form in all samples with sufficiently small crystallites (around 26 nm) and preserved structure with no significant deviations in unit cell parameters. The band gap energy decreased with increasing of PPy content, from 3.14 eV for pure TiO2 to 2.94 eV for TiO2/5% PPy. All the obtained nanocomposites demonstrated higher photocatalytic activity than pure TiO2, whereby TiO2/1% PPy nanocomposite was the most efficient by degrading 99.6% of the dye for 105 min under simulated solar light. Therefore, the amount of 1 wt.% should be consider as optimal amount of PPy in a composite. It is established that the photodegradation of RO16 using TiO2/PPy nanocomposites follows pseudo-first kinetic order. RO16 photocatalytic degradation mechanism in the presence of TiO2/PPy nanocomposites can be well described by direct Z-scheme heterojunction which has never been reported for TiO2/PPy system.
PB  - Novi Sad : Faculty of Technology
C3  - Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia
T1  - Photocatalytic degradation of Reactive Orange 16 dye using TiO2/PPy nanocomposites under simulated solar light
SP  - 87
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7402
ER  - 

@conference{
author = "Milojković, Natalija and Simović, Bojana and Žunić, Milan and Radovanović, Lidija and Dapčević, Aleksandra",
year = "2023",
abstract = "It is well known that titanium dioxide is usually used as a photocatalyst due to its nontoxicity, low cost, and stability. Conductive polymer, polypyrrole (PPy) is also appropriate for photocatalytic application being stable and easy to synthesize. The aim of this study was to obtain TiO2/PPy composites reaching higher photocatalytic efficiency compared to pure TiO2. Therefore, TiO2 was synthesized by the hydrothermal route, while PPy was obtained by the chemical oxidative polymerization method. TiO2/x% PPy nanocomposites (x = 0, 0.5, 1, 1.5, 3, 5 wt.%) were prepared by hand-mixing of powders in agate mortar for 30 min in order to find the optimal PPy content. Obtained materials were characterized by XRD, FTIR, TG/DSC, FESEM, and UV-Vis methods while their photocatalytic activity was estimated towards degradation of Reactive Orange 16 dye (RO16). A kinetic study was performed and a detailed mechanism of RO16 photocatalytic degradation in the presence of TiO2/PPy composites was proposed based on scavenger tests. The results showed that, despite PPy addition, TiO2 was present in anatase form in all samples with sufficiently small crystallites (around 26 nm) and preserved structure with no significant deviations in unit cell parameters. The band gap energy decreased with increasing of PPy content, from 3.14 eV for pure TiO2 to 2.94 eV for TiO2/5% PPy. All the obtained nanocomposites demonstrated higher photocatalytic activity than pure TiO2, whereby TiO2/1% PPy nanocomposite was the most efficient by degrading 99.6% of the dye for 105 min under simulated solar light. Therefore, the amount of 1 wt.% should be consider as optimal amount of PPy in a composite. It is established that the photodegradation of RO16 using TiO2/PPy nanocomposites follows pseudo-first kinetic order. RO16 photocatalytic degradation mechanism in the presence of TiO2/PPy nanocomposites can be well described by direct Z-scheme heterojunction which has never been reported for TiO2/PPy system.",
publisher = "Novi Sad : Faculty of Technology",
journal = "Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia",
title = "Photocatalytic degradation of Reactive Orange 16 dye using TiO2/PPy nanocomposites under simulated solar light",
pages = "87",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7402"
}

Milojković, N., Simović, B., Žunić, M., Radovanović, L.,& Dapčević, A.. (2023). Photocatalytic degradation of Reactive Orange 16 dye using TiO2/PPy nanocomposites under simulated solar light. in Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia
Novi Sad : Faculty of Technology., 87.
https://hdl.handle.net/21.15107/rcub_technorep_7402

Milojković N, Simović B, Žunić M, Radovanović L, Dapčević A. Photocatalytic degradation of Reactive Orange 16 dye using TiO2/PPy nanocomposites under simulated solar light. in Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia. 2023;:87.
https://hdl.handle.net/21.15107/rcub_technorep_7402 .

Milojković, Natalija, Simović, Bojana, Žunić, Milan, Radovanović, Lidija, Dapčević, Aleksandra, "Photocatalytic degradation of Reactive Orange 16 dye using TiO2/PPy nanocomposites under simulated solar light" in Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia (2023):87,
https://hdl.handle.net/21.15107/rcub_technorep_7402 .

TY  - JOUR
AU  - Radovanović, Lidija
AU  - Radovanović, Željko
AU  - Simović, Bojana
AU  - Vasić, Milica V.
AU  - Balanč, Bojana
AU  - Dapčević, Aleksandra
AU  - Dramićanin, Miroslav D.
AU  - Rogan, Jelena
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5984
AB  - A biphasic [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n com­plex material, I (dipya = 2,2’-dipyridylamine, tpht2– = dianion of terephthalatic acid) was synthesized by ligand exchange reaction and characterized by XRPD and FTIR spectroscopy. A ZnO/ZnMn2O4 composite, II, has been prepared via thermal decomposition of I in an air atmosphere at 450 °C. XRPD, FTIR and FESEM analyses of II revealed the simultaneous presence of spherical nano­particles of wurtzite ZnO and elongated nanoparticles of spinel ZnMn2O4. The specific surface area of II was determined by the BET method, whereas the volume and average size of the mesopores were calculated in accordance with the BJH method. The measurements of the mean size, polydispersity index and zeta potential showed colloidal instability of II. Two band gap values of 2.4 and 3.3 eV were determined using UV–Vis diffuse reflectance spectroscopy, while the measurements of photoluminescence revealed that II is active in the blue region of the visible spectrum. Testing of composite II as a pigmentary material showed that it can be used for the colouring of a ceramic glaze.
AB  - Двофазни  [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n комплексни материјал, I,  (dipya  =  2,2’-дипиридиламин,  tpht2–  =  дианјон  1,4-бензендикарбоксилнекиселине) синтетисан је реакцијом измене лиганада и окарактерисан XRPD мeтoдоми FTIR спек-троскопијом. Композит ZnO/ZnMn2O4, II, добијен је термичком разградњом прекурcopa I у атмосфери ваздуха на  450  °C.  XRPD  мeтoдом,  FTIR  спектроскопијом и  FESEM  микроскопијом композита II утврђено је истовремено присуство сферних наночестица ZnO вирцитне структуре и издужених наночестица  ZnMn2O4 са структуром спинела. Специфична површина композита II одређена је BET методом, док су запремина и просечна величина мезопора израчунати у складу са  BJH  методом. Средња величина, индекс полидисперзије и цета потенцијал измерени су фотонском корелационом спектроскопијом и електрофоретским расејањем светлости и показали су нестабилност композита II. Вредности ширине забрањене зоне од  2,4  и  3,3  eV  одређене су  UV–Vis  дифузно-рефлексионом спектроскопијом, док су мерења фотолуминесценције показала да је композит II активан у плавој области видљивог дела спектра. Испитивање композита II као пигментног материјала показало је да се може користити за бојење керамичке глазуре.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor
T1  - Структура и својства композита ZnO/ZnMn2O4 добијеног термичком разградњом терефталат-прекурсора
EP  - 325
IS  - 3
SP  - 313
VL  - 88
DO  - 10.2298/JSC221102090R
ER  - 

@article{
author = "Radovanović, Lidija and Radovanović, Željko and Simović, Bojana and Vasić, Milica V. and Balanč, Bojana and Dapčević, Aleksandra and Dramićanin, Miroslav D. and Rogan, Jelena",
year = "2023",
abstract = "A biphasic [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n com­plex material, I (dipya = 2,2’-dipyridylamine, tpht2– = dianion of terephthalatic acid) was synthesized by ligand exchange reaction and characterized by XRPD and FTIR spectroscopy. A ZnO/ZnMn2O4 composite, II, has been prepared via thermal decomposition of I in an air atmosphere at 450 °C. XRPD, FTIR and FESEM analyses of II revealed the simultaneous presence of spherical nano­particles of wurtzite ZnO and elongated nanoparticles of spinel ZnMn2O4. The specific surface area of II was determined by the BET method, whereas the volume and average size of the mesopores were calculated in accordance with the BJH method. The measurements of the mean size, polydispersity index and zeta potential showed colloidal instability of II. Two band gap values of 2.4 and 3.3 eV were determined using UV–Vis diffuse reflectance spectroscopy, while the measurements of photoluminescence revealed that II is active in the blue region of the visible spectrum. Testing of composite II as a pigmentary material showed that it can be used for the colouring of a ceramic glaze., Двофазни  [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n комплексни материјал, I,  (dipya  =  2,2’-дипиридиламин,  tpht2–  =  дианјон  1,4-бензендикарбоксилнекиселине) синтетисан је реакцијом измене лиганада и окарактерисан XRPD мeтoдоми FTIR спек-троскопијом. Композит ZnO/ZnMn2O4, II, добијен је термичком разградњом прекурcopa I у атмосфери ваздуха на  450  °C.  XRPD  мeтoдом,  FTIR  спектроскопијом и  FESEM  микроскопијом композита II утврђено је истовремено присуство сферних наночестица ZnO вирцитне структуре и издужених наночестица  ZnMn2O4 са структуром спинела. Специфична површина композита II одређена је BET методом, док су запремина и просечна величина мезопора израчунати у складу са  BJH  методом. Средња величина, индекс полидисперзије и цета потенцијал измерени су фотонском корелационом спектроскопијом и електрофоретским расејањем светлости и показали су нестабилност композита II. Вредности ширине забрањене зоне од  2,4  и  3,3  eV  одређене су  UV–Vis  дифузно-рефлексионом спектроскопијом, док су мерења фотолуминесценције показала да је композит II активан у плавој области видљивог дела спектра. Испитивање композита II као пигментног материјала показало је да се може користити за бојење керамичке глазуре.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor, Структура и својства композита ZnO/ZnMn2O4 добијеног термичком разградњом терефталат-прекурсора",
pages = "325-313",
number = "3",
volume = "88",
doi = "10.2298/JSC221102090R"
}

Radovanović, L., Radovanović, Ž., Simović, B., Vasić, M. V., Balanč, B., Dapčević, A., Dramićanin, M. D.,& Rogan, J.. (2023). Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 88(3), 313-325.
https://doi.org/10.2298/JSC221102090R

Radovanović L, Radovanović Ž, Simović B, Vasić MV, Balanč B, Dapčević A, Dramićanin MD, Rogan J. Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor. in Journal of the Serbian Chemical Society. 2023;88(3):313-325.
doi:10.2298/JSC221102090R .

Radovanović, Lidija, Radovanović, Željko, Simović, Bojana, Vasić, Milica V., Balanč, Bojana, Dapčević, Aleksandra, Dramićanin, Miroslav D., Rogan, Jelena, "Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor" in Journal of the Serbian Chemical Society, 88, no. 3 (2023):313-325,
https://doi.org/10.2298/JSC221102090R . .

TY  - JOUR
AU  - Simović, Bojana
AU  - Radovanović, Željko
AU  - Branković, Goran
AU  - Dapčević, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6363
AB  - In this work, in order to improve the photocatalytic efficiency of ZnO, the optimal CeO2 content in ZnO powders was determined by varying the quantity of CeO2 from 0 to 10 mol%. The structural, microstructural, optical, textural, and photocatalytic properties of the hydrothermally obtained ZnO and CeO2/ZnO nanocomposites have been investigated by using the XRPD, FESEM, HRTEM/SAED, BET, and UV–Vis techniques. Detailed characterization revealed that CeO2, having spherical nanodots of about 5 nm with a large surface area, was distributed onto the ZnO surface, whose crystallites displayed a bimodal distribution, from nano-to micro-crystals. The morphology of ZnO is a combination of nanograins and microrods that further makes a 3-D tie-like morphology. The nanocomposite containing 5 mol% of CeO2 showed about 30% better photocatalytic efficiency in the degradation of Reactive Orange 16 dye compared to other samples under simulated solar radiation. In addition, the kinetics and mechanism of photocatalytic degradation were also proposed based on the photocatalytic activity and scavenger tests.
PB  - Elsevier Ltd.
T2  - Materials Science in Semiconductor Processing
T1  - Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye
SP  - 107542
VL  - 162
DO  - 10.1016/j.mssp.2023.107542
ER  - 

@article{
author = "Simović, Bojana and Radovanović, Željko and Branković, Goran and Dapčević, Aleksandra",
year = "2023",
abstract = "In this work, in order to improve the photocatalytic efficiency of ZnO, the optimal CeO2 content in ZnO powders was determined by varying the quantity of CeO2 from 0 to 10 mol%. The structural, microstructural, optical, textural, and photocatalytic properties of the hydrothermally obtained ZnO and CeO2/ZnO nanocomposites have been investigated by using the XRPD, FESEM, HRTEM/SAED, BET, and UV–Vis techniques. Detailed characterization revealed that CeO2, having spherical nanodots of about 5 nm with a large surface area, was distributed onto the ZnO surface, whose crystallites displayed a bimodal distribution, from nano-to micro-crystals. The morphology of ZnO is a combination of nanograins and microrods that further makes a 3-D tie-like morphology. The nanocomposite containing 5 mol% of CeO2 showed about 30% better photocatalytic efficiency in the degradation of Reactive Orange 16 dye compared to other samples under simulated solar radiation. In addition, the kinetics and mechanism of photocatalytic degradation were also proposed based on the photocatalytic activity and scavenger tests.",
publisher = "Elsevier Ltd.",
journal = "Materials Science in Semiconductor Processing",
title = "Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye",
pages = "107542",
volume = "162",
doi = "10.1016/j.mssp.2023.107542"
}

Simović, B., Radovanović, Ž., Branković, G.,& Dapčević, A.. (2023). Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye. in Materials Science in Semiconductor Processing
Elsevier Ltd.., 162, 107542.
https://doi.org/10.1016/j.mssp.2023.107542

Simović B, Radovanović Ž, Branković G, Dapčević A. Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye. in Materials Science in Semiconductor Processing. 2023;162:107542.
doi:10.1016/j.mssp.2023.107542 .

Simović, Bojana, Radovanović, Željko, Branković, Goran, Dapčević, Aleksandra, "Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye" in Materials Science in Semiconductor Processing, 162 (2023):107542,
https://doi.org/10.1016/j.mssp.2023.107542 . .

TY  - CONF
AU  - Radovanović, Lidija
AU  - Radovanović, Željko
AU  - Kremenović, Aleksandar
AU  - Simović, Bojana
AU  - Vasić, Milica V.
AU  - Rogan, Jelena
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6723
AB  - In recent years, thermal decomposition studies of transition metal complexes with
benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of
obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a
contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–
gel treatment, thermolysis is faster, more efficient and environmentally friendly. Mn(II)–dipya
(dipya = 2,2’-dipyridylamine) complex with tetraanion of 1,2,4,5-benzenetetracarboxylic
(pyromellitic, H4pyr) acid, [Mn2(dipya)2(pyr)(H2O)2], has been prepared and characterized by
elemental, spectral and microscopy analyses. Direct thermolysis of the complex up to 1200 °C in an
air atmosphere yielded spinel Mn3O4 oxide material. The obtained Mn3O4 has been characterized
for its structural, spectroscopic, morphological and optical properties. The possibilities of using this
oxide as photocatalyst or co-photocatalyst for removing textile organic dyes, as well as inorganic
pigmentary material, were also investigated and discussed.
PB  - Banja Luka : University in Banjaluka, Faculty of Technology
C3  - Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022
T1  - Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4
SP  - 192
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6723
ER  - 

@conference{
author = "Radovanović, Lidija and Radovanović, Željko and Kremenović, Aleksandar and Simović, Bojana and Vasić, Milica V. and Rogan, Jelena",
year = "2022",
abstract = "In recent years, thermal decomposition studies of transition metal complexes with
benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of
obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a
contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–
gel treatment, thermolysis is faster, more efficient and environmentally friendly. Mn(II)–dipya
(dipya = 2,2’-dipyridylamine) complex with tetraanion of 1,2,4,5-benzenetetracarboxylic
(pyromellitic, H4pyr) acid, [Mn2(dipya)2(pyr)(H2O)2], has been prepared and characterized by
elemental, spectral and microscopy analyses. Direct thermolysis of the complex up to 1200 °C in an
air atmosphere yielded spinel Mn3O4 oxide material. The obtained Mn3O4 has been characterized
for its structural, spectroscopic, morphological and optical properties. The possibilities of using this
oxide as photocatalyst or co-photocatalyst for removing textile organic dyes, as well as inorganic
pigmentary material, were also investigated and discussed.",
publisher = "Banja Luka : University in Banjaluka, Faculty of Technology",
journal = "Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022",
title = "Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4",
pages = "192",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6723"
}

Radovanović, L., Radovanović, Ž., Kremenović, A., Simović, B., Vasić, M. V.,& Rogan, J.. (2022). Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4. in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022
Banja Luka : University in Banjaluka, Faculty of Technology., 192.
https://hdl.handle.net/21.15107/rcub_technorep_6723

Radovanović L, Radovanović Ž, Kremenović A, Simović B, Vasić MV, Rogan J. Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4. in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022. 2022;:192.
https://hdl.handle.net/21.15107/rcub_technorep_6723 .

Radovanović, Lidija, Radovanović, Željko, Kremenović, Aleksandar, Simović, Bojana, Vasić, Milica V., Rogan, Jelena, "Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4" in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022 (2022):192,
https://hdl.handle.net/21.15107/rcub_technorep_6723 .

TY  - CONF
AU  - Milojković, Natalija
AU  - Orlić, Marina
AU  - Dikić, Jelena
AU  - Zunic, Milan
AU  - Simović, Bojana
AU  - Dapčević, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6478
AB  - Regarding enormous expansion of bacterial contamination as well as their increase resistivity to commonly used disinfectants, there is a great demand for antibacterial material, which will not be based on organic compounds. Among various inorganic substances, environmentally friendly, low-cost and chemically stable ZnO and TiO2 demonstrate considerable antibacterial activity.This work primarily focuses on idea of developing novel disinfectant based on both, ZnO and TiO2, which would integrate all the worthy properties of both oxides. For that matter, titanium(IV) butoxide was dissolved in a solution of zinc acetate following with the ammonia addition until pH value was 8.5. Half of the initial solution was hydrothermally treated, dried and calcined at 500 (H-ZnTi-500) and 800°C (H-ZnTi-800). Two other samples (ZnTi-500 and ZnTi-800) were obtained from the other half of the initial solution which was directly dried and calcined under the same conditions. The samples were characterized by XRD including Rietveld refinement, FESEMand TG/DTA. Antibacterial activity was examined towards Gram-positive S. aureus and Gram-negative E. coli .The results showed that only ZnTi-800 consisted of pure Zn2TiO4 (Fd-3m) while Zn TiO was the major phase in three other samples. In the case of samples calcined at 500 °C, traces of ZnO were found. H-ZnTi-800 contained three phases: Zn2TiO4, ZnO and Zn2Ti3O8 (P4332). Cubic Zn2TiO4 contains two cation sites: tetrahedrally coordinated Zn at 0,0,0 and octahedral site at 5/8,5/8,5/8 shared between Zn and Ti. The calculated a-parameters of all obtained Zn2TiO4 as well as Zn–O and Zn/Ti–O bond distances were independent of synthesis. At 500 °C nanocrystalline Zn2TiO4 were obtained with the crystallite sizes 26 and 71 nm for H-ZnTi-500 and ZnTi-500, respectively, while microcrystalline phases were obtained at 800 °C with the crystallite sizes larger than 110 nm. The soft agglomerates consisted of smaller particles were obtained at 500 °C comparing to samples at 800 °C having more compact agglomerates.The best antibacterial activity with high reduction in the number of bacteria cells (87.6 % of E. coli and 63.4 % of S. aureus) was exhibited by the ZnTi-500. It means that the purity of samples, crystallite size and softness of agglomerates, influence antibacterial activity and that optimal level of all factors should be reached since ZnTi-500 was almost pure with sufficiently small crystallites and soft agglomerates.
PB  - European Powder Diffraction Conference (17 ; 2022 ; Šibenik)
C3  - European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts
T1  - A novel disinfectant based on zinc orthotitanate
SP  - 206
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1969
ER  - 

@conference{
author = "Milojković, Natalija and Orlić, Marina and Dikić, Jelena and Zunic, Milan and Simović, Bojana and Dapčević, Aleksandra",
year = "2022",
abstract = "Regarding enormous expansion of bacterial contamination as well as their increase resistivity to commonly used disinfectants, there is a great demand for antibacterial material, which will not be based on organic compounds. Among various inorganic substances, environmentally friendly, low-cost and chemically stable ZnO and TiO2 demonstrate considerable antibacterial activity.This work primarily focuses on idea of developing novel disinfectant based on both, ZnO and TiO2, which would integrate all the worthy properties of both oxides. For that matter, titanium(IV) butoxide was dissolved in a solution of zinc acetate following with the ammonia addition until pH value was 8.5. Half of the initial solution was hydrothermally treated, dried and calcined at 500 (H-ZnTi-500) and 800°C (H-ZnTi-800). Two other samples (ZnTi-500 and ZnTi-800) were obtained from the other half of the initial solution which was directly dried and calcined under the same conditions. The samples were characterized by XRD including Rietveld refinement, FESEMand TG/DTA. Antibacterial activity was examined towards Gram-positive S. aureus and Gram-negative E. coli .The results showed that only ZnTi-800 consisted of pure Zn2TiO4 (Fd-3m) while Zn TiO was the major phase in three other samples. In the case of samples calcined at 500 °C, traces of ZnO were found. H-ZnTi-800 contained three phases: Zn2TiO4, ZnO and Zn2Ti3O8 (P4332). Cubic Zn2TiO4 contains two cation sites: tetrahedrally coordinated Zn at 0,0,0 and octahedral site at 5/8,5/8,5/8 shared between Zn and Ti. The calculated a-parameters of all obtained Zn2TiO4 as well as Zn–O and Zn/Ti–O bond distances were independent of synthesis. At 500 °C nanocrystalline Zn2TiO4 were obtained with the crystallite sizes 26 and 71 nm for H-ZnTi-500 and ZnTi-500, respectively, while microcrystalline phases were obtained at 800 °C with the crystallite sizes larger than 110 nm. The soft agglomerates consisted of smaller particles were obtained at 500 °C comparing to samples at 800 °C having more compact agglomerates.The best antibacterial activity with high reduction in the number of bacteria cells (87.6 % of E. coli and 63.4 % of S. aureus) was exhibited by the ZnTi-500. It means that the purity of samples, crystallite size and softness of agglomerates, influence antibacterial activity and that optimal level of all factors should be reached since ZnTi-500 was almost pure with sufficiently small crystallites and soft agglomerates.",
publisher = "European Powder Diffraction Conference (17 ; 2022 ; Šibenik)",
journal = "European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts",
title = "A novel disinfectant based on zinc orthotitanate",
pages = "206",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1969"
}

Milojković, N., Orlić, M., Dikić, J., Zunic, M., Simović, B.,& Dapčević, A.. (2022). A novel disinfectant based on zinc orthotitanate. in European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts
European Powder Diffraction Conference (17 ; 2022 ; Šibenik)., 206.
https://hdl.handle.net/21.15107/rcub_rimsi_1969

Milojković N, Orlić M, Dikić J, Zunic M, Simović B, Dapčević A. A novel disinfectant based on zinc orthotitanate. in European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts. 2022;:206.
https://hdl.handle.net/21.15107/rcub_rimsi_1969 .

Milojković, Natalija, Orlić, Marina, Dikić, Jelena, Zunic, Milan, Simović, Bojana, Dapčević, Aleksandra, "A novel disinfectant based on zinc orthotitanate" in European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts (2022):206,
https://hdl.handle.net/21.15107/rcub_rimsi_1969 .

TY  - CONF
AU  - Zdravković, Jelena
AU  - Radovanović, Lidija
AU  - Simović, Bojana
AU  - Poleti, Dejan
AU  - Rogan, Jelena
AU  - Radovanović, Željko
AU  - Mihajlovski, Katarina
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6157
AB  - Coordination chemistry provides the know-how for the synthesis of the
precursor compounds with variable composition and structures, while the thermal
induced changes may control the crystalline structure, phase composition,
morphology, size, texture, and other properties of their pyrolytic products [1]. In
terms of coordination chemistry and thermal analysis, our research has been focused
on the synthesis of mixed ligand complexes [2] that can be used as precursors for
obtaining diverse (compositional and structural) oxides, depending on their
thermoreactivity.
The main goal of this approach was the reduction of the temperature at which
the oxides are formed (up to 600–700 °C) comparative to the standard ceramic
methods. The effect of the different atmospheres (dynamic air or N2) on the thermal
decomposition of Zn benzenedicarboxylate complexes with 2,2’-dipyridylamine was
investigated. The formation of ZnO nanopowders was identified using XRPD and
FESEM techniques. The influence of the adopted architecture of ternary metal
complexes used as templates for ZnO nanopowders was discussed. The thermal
decomposition kinetics of precursors was studied under non-isothermal conditions.
In addition, the antibacterial activity of obtained ZnO nanopowders was also
analyzed.
PB  - Belgrade : Institute for Multidisciplinary Research, University
C3  - Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
T1  - ZnO nanopowders obtained by thermolysis of zinc benzenedicarboxylate complexes with 2,2’-dipyridylamine
SP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6157
ER  - 

@conference{
author = "Zdravković, Jelena and Radovanović, Lidija and Simović, Bojana and Poleti, Dejan and Rogan, Jelena and Radovanović, Željko and Mihajlovski, Katarina",
year = "2017",
abstract = "Coordination chemistry provides the know-how for the synthesis of the
precursor compounds with variable composition and structures, while the thermal
induced changes may control the crystalline structure, phase composition,
morphology, size, texture, and other properties of their pyrolytic products [1]. In
terms of coordination chemistry and thermal analysis, our research has been focused
on the synthesis of mixed ligand complexes [2] that can be used as precursors for
obtaining diverse (compositional and structural) oxides, depending on their
thermoreactivity.
The main goal of this approach was the reduction of the temperature at which
the oxides are formed (up to 600–700 °C) comparative to the standard ceramic
methods. The effect of the different atmospheres (dynamic air or N2) on the thermal
decomposition of Zn benzenedicarboxylate complexes with 2,2’-dipyridylamine was
investigated. The formation of ZnO nanopowders was identified using XRPD and
FESEM techniques. The influence of the adopted architecture of ternary metal
complexes used as templates for ZnO nanopowders was discussed. The thermal
decomposition kinetics of precursors was studied under non-isothermal conditions.
In addition, the antibacterial activity of obtained ZnO nanopowders was also
analyzed.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University",
journal = "Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia",
title = "ZnO nanopowders obtained by thermolysis of zinc benzenedicarboxylate complexes with 2,2’-dipyridylamine",
pages = "79",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6157"
}

Zdravković, J., Radovanović, L., Simović, B., Poleti, D., Rogan, J., Radovanović, Ž.,& Mihajlovski, K.. (2017). ZnO nanopowders obtained by thermolysis of zinc benzenedicarboxylate complexes with 2,2’-dipyridylamine. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research, University., 79.
https://hdl.handle.net/21.15107/rcub_technorep_6157

Zdravković J, Radovanović L, Simović B, Poleti D, Rogan J, Radovanović Ž, Mihajlovski K. ZnO nanopowders obtained by thermolysis of zinc benzenedicarboxylate complexes with 2,2’-dipyridylamine. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia. 2017;:79.
https://hdl.handle.net/21.15107/rcub_technorep_6157 .

Zdravković, Jelena, Radovanović, Lidija, Simović, Bojana, Poleti, Dejan, Rogan, Jelena, Radovanović, Željko, Mihajlovski, Katarina, "ZnO nanopowders obtained by thermolysis of zinc benzenedicarboxylate complexes with 2,2’-dipyridylamine" in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia (2017):79,
https://hdl.handle.net/21.15107/rcub_technorep_6157 .