TY  - CONF
AU  - Jovanović, Aleksandar
AU  - Bugarčić, Mladen
AU  - Čutović, Natalija
AU  - Bošnjaković, Jovana
AU  - Knežević, Nataša
AU  - Marinković, Aleksandar
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/675
AB  - Pollution of water presents one of the biggest problems of modern society. Pesticide
production, usage and release, as well as their persistence in the environment, have
detrimental effects on the aquatic and non-target species. Therefore, it is necessary to apply
treatment techniques in order to prevent these negative consequences. The processes used
so far do not have the necessary efficiency to optimally solve this problem. Hence, plenty
of advanced oxidation processes (AOPs) has been developed, among which photocatalysis
has stood out. Thus, photocatalytic degradation of fungicide thiophanate-methyl by using
recently synthesized catalyst Ag2O/TiO2 was considered. The effect of the various
parameters, such as catalyst amount, fungicide concentration, and also the distance of the
lamp from the photocatalytic reactor was studied. The obtained photocatalyst was examined
using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy
(SEM), as well as Diffuse reflectance spectroscopy (DRS). Photocatalytic assays
employing Ag2O/TiO2 catalyst with the concentration of 0.065 g/l yielded the best results.
The degradation rate constant was measured as 0,040 min-1 by observing values of
absorbances from the UV spectrophotometer Shimadzu 1800. Under the optimal
conditions, the complete disappearance of 10 mg/l of fungicide occurred within 2 h by
using Ag2O/TiO2. However, the limitation of the applied process is reflected in the volume
of wastewater that can be treated, while making it economically viable. Obtained results
show that synthesized catalysts pose a great ability to effectively decompose thiophanatemethyl
under UV light.
PB  - Split : University of Split, Faculty of Chemistry and Technology
C3  - 3rd International convention of scientists, specialist employees and students on the topic of Environmental protection in the Republic of Croatia (3rd ZORH convention)
T1  - Modification of titanium-dioxide surface with silver(i)-oxide as a catalyst for photocatalytic degradation of fungicide
T1  - Modifikacija površine titanijum-dioksida srebro(i)-oksidom kao katalizatora za fotokatalitičku degradaciju fungicida
EP  - 26
SP  - 26
ER  - 

@conference{
author = "Jovanović, Aleksandar and Bugarčić, Mladen and Čutović, Natalija and Bošnjaković, Jovana and Knežević, Nataša and Marinković, Aleksandar",
year = "2022",
abstract = "Pollution of water presents one of the biggest problems of modern society. Pesticide
production, usage and release, as well as their persistence in the environment, have
detrimental effects on the aquatic and non-target species. Therefore, it is necessary to apply
treatment techniques in order to prevent these negative consequences. The processes used
so far do not have the necessary efficiency to optimally solve this problem. Hence, plenty
of advanced oxidation processes (AOPs) has been developed, among which photocatalysis
has stood out. Thus, photocatalytic degradation of fungicide thiophanate-methyl by using
recently synthesized catalyst Ag2O/TiO2 was considered. The effect of the various
parameters, such as catalyst amount, fungicide concentration, and also the distance of the
lamp from the photocatalytic reactor was studied. The obtained photocatalyst was examined
using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy
(SEM), as well as Diffuse reflectance spectroscopy (DRS). Photocatalytic assays
employing Ag2O/TiO2 catalyst with the concentration of 0.065 g/l yielded the best results.
The degradation rate constant was measured as 0,040 min-1 by observing values of
absorbances from the UV spectrophotometer Shimadzu 1800. Under the optimal
conditions, the complete disappearance of 10 mg/l of fungicide occurred within 2 h by
using Ag2O/TiO2. However, the limitation of the applied process is reflected in the volume
of wastewater that can be treated, while making it economically viable. Obtained results
show that synthesized catalysts pose a great ability to effectively decompose thiophanatemethyl
under UV light.",
publisher = "Split : University of Split, Faculty of Chemistry and Technology",
journal = "3rd International convention of scientists, specialist employees and students on the topic of Environmental protection in the Republic of Croatia (3rd ZORH convention)",
title = "Modification of titanium-dioxide surface with silver(i)-oxide as a catalyst for photocatalytic degradation of fungicide, Modifikacija površine titanijum-dioksida srebro(i)-oksidom kao katalizatora za fotokatalitičku degradaciju fungicida",
pages = "26-26"
}

Jovanović, A., Bugarčić, M., Čutović, N., Bošnjaković, J., Knežević, N.,& Marinković, A.. (2022). Modification of titanium-dioxide surface with silver(i)-oxide as a catalyst for photocatalytic degradation of fungicide. in 3rd International convention of scientists, specialist employees and students on the topic of Environmental protection in the Republic of Croatia (3rd ZORH convention)
Split : University of Split, Faculty of Chemistry and Technology., 26-26.

Jovanović A, Bugarčić M, Čutović N, Bošnjaković J, Knežević N, Marinković A. Modification of titanium-dioxide surface with silver(i)-oxide as a catalyst for photocatalytic degradation of fungicide. in 3rd International convention of scientists, specialist employees and students on the topic of Environmental protection in the Republic of Croatia (3rd ZORH convention). 2022;:26-26..

Jovanović, Aleksandar, Bugarčić, Mladen, Čutović, Natalija, Bošnjaković, Jovana, Knežević, Nataša, Marinković, Aleksandar, "Modification of titanium-dioxide surface with silver(i)-oxide as a catalyst for photocatalytic degradation of fungicide" in 3rd International convention of scientists, specialist employees and students on the topic of Environmental protection in the Republic of Croatia (3rd ZORH convention) (2022):26-26.

TY  - JOUR
AU  - Knežević, Nataša
AU  - Jovanović, Aleksandar
AU  - Bošnjaković, Jovana
AU  - Milošević, Milena
AU  - Rančić, Milica
AU  - Marinković, Aleksandar
AU  - Gržetić, Jelena
AU  - Gamoudi, Houda
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/620
AB  - U ovom radu ispitivan je potencijal korišćenja akril-funkcionalizovanog kraft lignina (AKL) u smanjenju zapaljivosti polimernih kompozita na bazi recikliranih nezasićenih poliesterskih smola (NZPS). Akrilna funkcionalizacija kraft lignina je izvedena direktnom esterifikacijom slobodnih polifenolnih grupa sa akriloil hloridom, nakon čega je AKL umešan u NZP smolu sintetizovanu od poliola dobijenih katalitičkom depolimerizacijom otpadnog poli(etilen tereftalata). AKL je homogenizovan sa NZPS pri različitim masenim udelima: 2,5, 5,0, 7,5 i 12,5 mas.%. Strukturne i dinamičko-mehaničke karakteristike akril-funkcionalizovanog kraft lignina i kompozita određene su primenom FTIR spektroskopije, dinamičkomehaničke analize (DMA) i testova jednoosnog zatezanja. Proučavan je uticaj funkcionalizacije i masenog udela AKL na zatezna i termička svojstva NZPS. Vatrootporna svojstva kompozita su ispitivana prema standardnoj UL-94V metodi, na osnovu koje je kompozit sa 12,5 tež. % akril-funkcionalizovanog lignina dostigao najvišu kategorija toplotno otpornih materijala.
AB  - This paper investigates the using potential of acryl-functionalized kraft lignin (AKL) in reducing the flammability of polymer composites based on recycled unsaturated polyester resins (UPR). Acryl functionalization of kraft lignin was performed by direct esterification of free polyphenolic groups with acryloyl chloride, after what, the AKL was blended in UPR resin synthesized from the polyols obtained by catalytic depolymerization of waste poly(ethylene terephthalate). The AKL was homogenized in UPR resin in different weight ratios: 2.5, 5.0, 7.5, and 12.5 wt.%. Structural and dynamic-mechanical characteristics of acryl-functionalized kraft lignin and composites were determined using FTIR spectroscopy, dynamicmechanical analysis (DMA), and tensile tests. The influence of functionalization and mass fraction of AKL on tensile and thermal properties of UPR resin was studied. The thermal properties of the composite were tested according to the standard UL-94 method, based on which the highest category of heat-resistant materials is a composite with 12.5 wt.% acylfunctionalized lignin.
PB  - Vojnotehnički institut, Beograd
T2  - Scientific Technical Review
T1  - Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata)
T1  - Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate)
EP  - 37
IS  - 2
SP  - 32
VL  - 72
DO  - 10.5937/str2202032K
UR  - conv_395
ER  - 

@article{
author = "Knežević, Nataša and Jovanović, Aleksandar and Bošnjaković, Jovana and Milošević, Milena and Rančić, Milica and Marinković, Aleksandar and Gržetić, Jelena and Gamoudi, Houda",
year = "2022",
abstract = "U ovom radu ispitivan je potencijal korišćenja akril-funkcionalizovanog kraft lignina (AKL) u smanjenju zapaljivosti polimernih kompozita na bazi recikliranih nezasićenih poliesterskih smola (NZPS). Akrilna funkcionalizacija kraft lignina je izvedena direktnom esterifikacijom slobodnih polifenolnih grupa sa akriloil hloridom, nakon čega je AKL umešan u NZP smolu sintetizovanu od poliola dobijenih katalitičkom depolimerizacijom otpadnog poli(etilen tereftalata). AKL je homogenizovan sa NZPS pri različitim masenim udelima: 2,5, 5,0, 7,5 i 12,5 mas.%. Strukturne i dinamičko-mehaničke karakteristike akril-funkcionalizovanog kraft lignina i kompozita određene su primenom FTIR spektroskopije, dinamičkomehaničke analize (DMA) i testova jednoosnog zatezanja. Proučavan je uticaj funkcionalizacije i masenog udela AKL na zatezna i termička svojstva NZPS. Vatrootporna svojstva kompozita su ispitivana prema standardnoj UL-94V metodi, na osnovu koje je kompozit sa 12,5 tež. % akril-funkcionalizovanog lignina dostigao najvišu kategorija toplotno otpornih materijala., This paper investigates the using potential of acryl-functionalized kraft lignin (AKL) in reducing the flammability of polymer composites based on recycled unsaturated polyester resins (UPR). Acryl functionalization of kraft lignin was performed by direct esterification of free polyphenolic groups with acryloyl chloride, after what, the AKL was blended in UPR resin synthesized from the polyols obtained by catalytic depolymerization of waste poly(ethylene terephthalate). The AKL was homogenized in UPR resin in different weight ratios: 2.5, 5.0, 7.5, and 12.5 wt.%. Structural and dynamic-mechanical characteristics of acryl-functionalized kraft lignin and composites were determined using FTIR spectroscopy, dynamicmechanical analysis (DMA), and tensile tests. The influence of functionalization and mass fraction of AKL on tensile and thermal properties of UPR resin was studied. The thermal properties of the composite were tested according to the standard UL-94 method, based on which the highest category of heat-resistant materials is a composite with 12.5 wt.% acylfunctionalized lignin.",
publisher = "Vojnotehnički institut, Beograd",
journal = "Scientific Technical Review",
title = "Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata), Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate)",
pages = "37-32",
number = "2",
volume = "72",
doi = "10.5937/str2202032K",
url = "conv_395"
}

Knežević, N., Jovanović, A., Bošnjaković, J., Milošević, M., Rančić, M., Marinković, A., Gržetić, J.,& Gamoudi, H.. (2022). Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata). in Scientific Technical Review
Vojnotehnički institut, Beograd., 72(2), 32-37.
https://doi.org/10.5937/str2202032K
conv_395

Knežević N, Jovanović A, Bošnjaković J, Milošević M, Rančić M, Marinković A, Gržetić J, Gamoudi H. Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata). in Scientific Technical Review. 2022;72(2):32-37.
doi:10.5937/str2202032K
conv_395 .

Knežević, Nataša, Jovanović, Aleksandar, Bošnjaković, Jovana, Milošević, Milena, Rančić, Milica, Marinković, Aleksandar, Gržetić, Jelena, Gamoudi, Houda, "Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata)" in Scientific Technical Review, 72, no. 2 (2022):32-37,
https://doi.org/10.5937/str2202032K .,
conv_395 .