TY  - CONF
AU  - Marković, Smilja
AU  - Stojković Simatović, Ivana
AU  - Ahmetović, Sanita
AU  - Veselinović, Ljiljana
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Škapin, Srečo Davor
AU  - Uskoković, Dragan
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2970
AB  - Zinc oxide-based materials have a great potential to be applied as photocatalysts in the processes
of removal of organic and biological pollutants from drinking and wastewaters. A major
drawback of ZnO as visible-light absorber is a band energy gap of 3.37 eV, which restricts the
material to absorb UV light only. This drawback can be overcame by modifying the optical
absorption properties of zinc oxide particles. Different approaches have been applied to modify
the visible light photocatalytic activity of ZnO materials: (1) metal and nonmetal ion doping, (2)
hydrogenation, (3) the incorporation of crystalline defects in the form of vacancies and
interstitials, (4) the modification of particles morphology and surface topology, etc.
In this study we investigated the influence of different surfactants on the morphology, optical
properties and functionality of ZnO particles. Two different surfactants were employed during
microwave processing of ZnO particles, cetyltrimethylammonium bromide (CTAB) as cationic
and Pluronic F-127 as non-ionic one. The crystal structure and phase purity of the ZnO particles
were determined by X-ray diffraction and Raman spectroscopy. Effects of the surfactants on
particles morphology and texture properties were observed with field emission scanning electron
microscopy (FE–SEM) and nitrogen adsorption–desorption isotherm, respectively. The optical
properties were studied using UV–Vis diffuse reflectance and photoluminescence (PL)
spectroscopy. Functionality of ZnO particles was studied due to their photocatalytic and
electrochemical activities. Photocatalytic activity was examined via decolorization of methylene
blue under direct sunlight irradiation. Electrochemical behavior of the ZnO samples as anode
material was evaluated by linear sweep voltammetry in Na2SO4
 electrolyte; the oxygen evolution
kinetics were determined and compared.
PB  - Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia
C3  - Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
T1  - CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties
SP  - 70/O.S.II.9
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2970
ER  - 

@conference{
author = "Marković, Smilja and Stojković Simatović, Ivana and Ahmetović, Sanita and Veselinović, Ljiljana and Stojadinović, Stevan and Rac, Vladislav and Škapin, Srečo Davor and Uskoković, Dragan",
year = "2018",
abstract = "Zinc oxide-based materials have a great potential to be applied as photocatalysts in the processes
of removal of organic and biological pollutants from drinking and wastewaters. A major
drawback of ZnO as visible-light absorber is a band energy gap of 3.37 eV, which restricts the
material to absorb UV light only. This drawback can be overcame by modifying the optical
absorption properties of zinc oxide particles. Different approaches have been applied to modify
the visible light photocatalytic activity of ZnO materials: (1) metal and nonmetal ion doping, (2)
hydrogenation, (3) the incorporation of crystalline defects in the form of vacancies and
interstitials, (4) the modification of particles morphology and surface topology, etc.
In this study we investigated the influence of different surfactants on the morphology, optical
properties and functionality of ZnO particles. Two different surfactants were employed during
microwave processing of ZnO particles, cetyltrimethylammonium bromide (CTAB) as cationic
and Pluronic F-127 as non-ionic one. The crystal structure and phase purity of the ZnO particles
were determined by X-ray diffraction and Raman spectroscopy. Effects of the surfactants on
particles morphology and texture properties were observed with field emission scanning electron
microscopy (FE–SEM) and nitrogen adsorption–desorption isotherm, respectively. The optical
properties were studied using UV–Vis diffuse reflectance and photoluminescence (PL)
spectroscopy. Functionality of ZnO particles was studied due to their photocatalytic and
electrochemical activities. Photocatalytic activity was examined via decolorization of methylene
blue under direct sunlight irradiation. Electrochemical behavior of the ZnO samples as anode
material was evaluated by linear sweep voltammetry in Na2SO4
 electrolyte; the oxygen evolution
kinetics were determined and compared.",
publisher = "Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia",
journal = "Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018",
title = "CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties",
pages = "70/O.S.II.9",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2970"
}

Marković, S., Stojković Simatović, I., Ahmetović, S., Veselinović, L., Stojadinović, S., Rac, V., Škapin, S. D.,& Uskoković, D.. (2018). CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia., 70/O.S.II.9.
https://hdl.handle.net/21.15107/rcub_rimsi_2970

Marković S, Stojković Simatović I, Ahmetović S, Veselinović L, Stojadinović S, Rac V, Škapin SD, Uskoković D. CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018. 2018;:70/O.S.II.9.
https://hdl.handle.net/21.15107/rcub_rimsi_2970 .

Marković, Smilja, Stojković Simatović, Ivana, Ahmetović, Sanita, Veselinović, Ljiljana, Stojadinović, Stevan, Rac, Vladislav, Škapin, Srečo Davor, Uskoković, Dragan, "CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties" in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018 (2018):70/O.S.II.9,
https://hdl.handle.net/21.15107/rcub_rimsi_2970 .

TY  - CONF
AU  - Ahmetović, Sanita
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Škapin, Srečo Davor
AU  - Stojković Simatović, Ivana
AU  - Marković, Smilja
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2871
AB  - Due to its optical and electrical properties, low toxicity, chemical and physical stability, as
well as inexpensiveness, zinc oxide (ZnO) based materials have a great potential to be used
as photoelectrode in photo(electro)catalysis. Photo(electro)catalytic activity of ZnO materials
can be improved by modification of particles morphology and surface topology.
In this work, the influence of two different surfactants: cetyltrimethylammonium bromide
(CTAB) and Pluronic F-127, on the crystal structure, morphology, optical and
photo(electro)catalytic properties of ZnO particles, were examined. ZnO powders were
synthesized by microwave processing of a precipitate which was previously prepared by
"drop by drop" method in the presence of the surfactants. The crystal structure and phase
purity of the ZnO particles were determined by X-ray diffraction and Raman spectroscopy.
The effects of the surfactants on ZnO particles morphology were examined by the field
emission scanning electron microscopy (FE-SEM). The optical properties were studied using
UV-Vis diffuse reflectance and photoluminescence spectroscopy. Photocatalytic activity was
examined via decolorization of methylene blue under direct sunlight irradiation. It was found
that synthesized ZnO powders have a significant photocatalytic activity. Electrochemical
properties were studied using linear sweep voltammetry and impedance spectroscopy in
Na2SO4 electrolyte. ZnO powder synthesized in the presence of CTAB (ZnO/CTAB) showed
the most significant reduction of potential and the fastest kinetic of oxygen evolution.
PB  - Institute of Technical Sciences of SASA Knez Mihailova 35/IV, 11000 Belgrade, Serbia
C3  - Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia, 2018, 66-66
T1  - Structural, morphological and optical characteristics of ZnO particles synthesized in the presence of surfactants CTAB and Pluronic F-127
SP  - 66/10-2
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2871
ER  - 

@conference{
author = "Ahmetović, Sanita and Stojadinović, Stevan and Rac, Vladislav and Škapin, Srečo Davor and Stojković Simatović, Ivana and Marković, Smilja",
year = "2018",
abstract = "Due to its optical and electrical properties, low toxicity, chemical and physical stability, as
well as inexpensiveness, zinc oxide (ZnO) based materials have a great potential to be used
as photoelectrode in photo(electro)catalysis. Photo(electro)catalytic activity of ZnO materials
can be improved by modification of particles morphology and surface topology.
In this work, the influence of two different surfactants: cetyltrimethylammonium bromide
(CTAB) and Pluronic F-127, on the crystal structure, morphology, optical and
photo(electro)catalytic properties of ZnO particles, were examined. ZnO powders were
synthesized by microwave processing of a precipitate which was previously prepared by
"drop by drop" method in the presence of the surfactants. The crystal structure and phase
purity of the ZnO particles were determined by X-ray diffraction and Raman spectroscopy.
The effects of the surfactants on ZnO particles morphology were examined by the field
emission scanning electron microscopy (FE-SEM). The optical properties were studied using
UV-Vis diffuse reflectance and photoluminescence spectroscopy. Photocatalytic activity was
examined via decolorization of methylene blue under direct sunlight irradiation. It was found
that synthesized ZnO powders have a significant photocatalytic activity. Electrochemical
properties were studied using linear sweep voltammetry and impedance spectroscopy in
Na2SO4 electrolyte. ZnO powder synthesized in the presence of CTAB (ZnO/CTAB) showed
the most significant reduction of potential and the fastest kinetic of oxygen evolution.",
publisher = "Institute of Technical Sciences of SASA Knez Mihailova 35/IV, 11000 Belgrade, Serbia",
journal = "Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia, 2018, 66-66",
title = "Structural, morphological and optical characteristics of ZnO particles synthesized in the presence of surfactants CTAB and Pluronic F-127",
pages = "66/10-2",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2871"
}

Ahmetović, S., Stojadinović, S., Rac, V., Škapin, S. D., Stojković Simatović, I.,& Marković, S.. (2018). Structural, morphological and optical characteristics of ZnO particles synthesized in the presence of surfactants CTAB and Pluronic F-127. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia, 2018, 66-66
Institute of Technical Sciences of SASA Knez Mihailova 35/IV, 11000 Belgrade, Serbia., 66/10-2.
https://hdl.handle.net/21.15107/rcub_rimsi_2871

Ahmetović S, Stojadinović S, Rac V, Škapin SD, Stojković Simatović I, Marković S. Structural, morphological and optical characteristics of ZnO particles synthesized in the presence of surfactants CTAB and Pluronic F-127. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia, 2018, 66-66. 2018;:66/10-2.
https://hdl.handle.net/21.15107/rcub_rimsi_2871 .

Ahmetović, Sanita, Stojadinović, Stevan, Rac, Vladislav, Škapin, Srečo Davor, Stojković Simatović, Ivana, Marković, Smilja, "Structural, morphological and optical characteristics of ZnO particles synthesized in the presence of surfactants CTAB and Pluronic F-127" in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia, 2018, 66-66 (2018):66/10-2,
https://hdl.handle.net/21.15107/rcub_rimsi_2871 .

TY  - CONF
AU  - Marković, Smilja
AU  - Stojković Simatović, Ivana
AU  - Ahmetović, Sanita
AU  - Veselinović, Ljiljana
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Škapin, Srečo Davor
AU  - Uskoković, Dragan
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2891
AB  - ZnO/CTAB powder was prepared by microwave processing of a precipitate 
with the aid of cetyltrimethylammonium bromide (CTAB). The effects of 
CTAB on the crystal structure, morphology, optical and 
photo(electro)catalytic properties of ZnO particles were studied. The results 
showed that CTAB did not influenced crystal structure or phase purity of 
ZnO. However, even low concentration of CTAB vary particles morphology; 
cone-like particles were prepared by processing without CTAB, while a 
mixture of spheroidal and plate-like ZnO particles were produced when 0.001 
M CTAB was used. It was found that synthesized ZnO powders have 0.10 
eV lower band gap energy then bulk ZnO (3.37 eV). A high photocatalytic 
activity for decolorization of methylene blue water solution was established 
after 2 h of sunlight irradiation; efficiency was 100 and 67% for ZnO/CTAB 
and ZnO, respectively. Electrochemical test showed faster oxygen evolution 
kinetics when ZnO/CTAB was used as anode material. Enhanced 
photo(electro)catalytic activities of ZnO/CTAB particles are attributed to 
better absorption of visible light due to both, larger dimensions and surface 
sensitization by CTAB.
PB  - Society of Physical Chemists of Serbia, Studentski Trg 12-16,  11158, Belgrade, Serbia
C3  - Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade
T1  - Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing
EP  - 240
SP  - 237/C-17-P
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2891
ER  - 

@conference{
author = "Marković, Smilja and Stojković Simatović, Ivana and Ahmetović, Sanita and Veselinović, Ljiljana and Stojadinović, Stevan and Rac, Vladislav and Škapin, Srečo Davor and Uskoković, Dragan",
year = "2018",
abstract = "ZnO/CTAB powder was prepared by microwave processing of a precipitate 
with the aid of cetyltrimethylammonium bromide (CTAB). The effects of 
CTAB on the crystal structure, morphology, optical and 
photo(electro)catalytic properties of ZnO particles were studied. The results 
showed that CTAB did not influenced crystal structure or phase purity of 
ZnO. However, even low concentration of CTAB vary particles morphology; 
cone-like particles were prepared by processing without CTAB, while a 
mixture of spheroidal and plate-like ZnO particles were produced when 0.001 
M CTAB was used. It was found that synthesized ZnO powders have 0.10 
eV lower band gap energy then bulk ZnO (3.37 eV). A high photocatalytic 
activity for decolorization of methylene blue water solution was established 
after 2 h of sunlight irradiation; efficiency was 100 and 67% for ZnO/CTAB 
and ZnO, respectively. Electrochemical test showed faster oxygen evolution 
kinetics when ZnO/CTAB was used as anode material. Enhanced 
photo(electro)catalytic activities of ZnO/CTAB particles are attributed to 
better absorption of visible light due to both, larger dimensions and surface 
sensitization by CTAB.",
publisher = "Society of Physical Chemists of Serbia, Studentski Trg 12-16,  11158, Belgrade, Serbia",
journal = "Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade",
title = "Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing",
pages = "240-237/C-17-P",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2891"
}

Marković, S., Stojković Simatović, I., Ahmetović, S., Veselinović, L., Stojadinović, S., Rac, V., Škapin, S. D.,& Uskoković, D.. (2018). Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing. in Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade
Society of Physical Chemists of Serbia, Studentski Trg 12-16,  11158, Belgrade, Serbia., 237/C-17-P-240.
https://hdl.handle.net/21.15107/rcub_rimsi_2891

Marković S, Stojković Simatović I, Ahmetović S, Veselinović L, Stojadinović S, Rac V, Škapin SD, Uskoković D. Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing. in Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade. 2018;:237/C-17-P-240.
https://hdl.handle.net/21.15107/rcub_rimsi_2891 .

Marković, Smilja, Stojković Simatović, Ivana, Ahmetović, Sanita, Veselinović, Ljiljana, Stojadinović, Stevan, Rac, Vladislav, Škapin, Srečo Davor, Uskoković, Dragan, "Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing" in Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade (2018):237/C-17-P-240,
https://hdl.handle.net/21.15107/rcub_rimsi_2891 .