TY  - JOUR
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Vujančević, Jelena
AU  - Janković-Častvan, Ivona
AU  - Ognjanović, M.
AU  - Tadić, N.
AU  - Stojadinović, S.
AU  - Branković, Goran
AU  - Nikolić, Maria Vesna
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4401
AB  - The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol-gel method and calcination at 750 degrees C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.
PB  - Royal Soc, London
T2  - Royal Society Open Science
T1  - Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol-gel method
IS  - 9
VL  - 7
DO  - 10.1098/rsos.200708
ER  - 

@article{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena and Vujančević, Jelena and Janković-Častvan, Ivona and Ognjanović, M. and Tadić, N. and Stojadinović, S. and Branković, Goran and Nikolić, Maria Vesna",
year = "2020",
abstract = "The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol-gel method and calcination at 750 degrees C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.",
publisher = "Royal Soc, London",
journal = "Royal Society Open Science",
title = "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol-gel method",
number = "9",
volume = "7",
doi = "10.1098/rsos.200708"
}

Vasiljević, Z. Ž., Dojčinović, M., Vujančević, J., Janković-Častvan, I., Ognjanović, M., Tadić, N., Stojadinović, S., Branković, G.,& Nikolić, M. V.. (2020). Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol-gel method. in Royal Society Open Science
Royal Soc, London., 7(9).
https://doi.org/10.1098/rsos.200708

Vasiljević ZŽ, Dojčinović M, Vujančević J, Janković-Častvan I, Ognjanović M, Tadić N, Stojadinović S, Branković G, Nikolić MV. Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol-gel method. in Royal Society Open Science. 2020;7(9).
doi:10.1098/rsos.200708 .

Vasiljević, Zorka Ž., Dojčinović, Milena, Vujančević, Jelena, Janković-Častvan, Ivona, Ognjanović, M., Tadić, N., Stojadinović, S., Branković, Goran, Nikolić, Maria Vesna, "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol-gel method" in Royal Society Open Science, 7, no. 9 (2020),
https://doi.org/10.1098/rsos.200708 . .

TY  - JOUR
AU  - Ivanovska, Aleksandra
AU  - Cerović, Dragana
AU  - Tadić, Nenad
AU  - Janković Častvan, Ivona
AU  - Asanović, Koviljka
AU  - Kostić, Mirjana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4146
AB  - The jute woven fabric was treated with sodium hydroxide and sodium chlorite under different conditions in order to study the influence of the chemical composition on their sorption and dielectric properties. After the alkali treatments, the hemicelluloses content decreased in the range of 14.4-46.7%, which leads to elementary fiber liberalization and increased moisture sorption of the jute fabrics up to 15.5% and 11.9% at 30% and 80% relative humidity, respectively. The X-ray diffraction analysis shows that the removal of hemicelluloses for 14.4% and 36.6% was followed by a decrease in the crystallinity index for 3.0% and 18.8%, respectively. The additional decrease in hemicelluloses content of 46.7% was accompanied by a slight increase in the crystallinity index for about 14%. These results are in a good agreement with the results obtained for the AC specific electrical conductivity (at 30% and 80% relative humidity). After the oxidative treatments, the lignin content decreased in the range of 37.8%-79.0%, which causes two parallel effects: a slightly increased moisture sorption (up to 7.4% and 4.6% at 30% and 80% relative humidity, respectively) and crystallinity index (from 4.8%-16.6%). The jute fabrics with 37.8% and 63.2% lower lignin content and similar moisture sorption values have the same AC specific electrical conductivities at both relative humidities (30% and 80%) revealing a dominant effect of moisture sorption. The AC specific electrical conductivity of the investigated jute fabrics increases with increasing the frequency as well as relative air humidity, where the highest difference between the values of AC specific electrical conductivity is obtained at the highest frequency (140 kHz).
PB  - Elsevier B.V.
T2  - Industrial Crops and Products
T1  - Sorption and dielectric properties of jute woven fabrics: Effect of chemical composition
SP  - 111632
VL  - 140
DO  - 10.1016/j.indcrop.2019.111632
ER  - 

@article{
author = "Ivanovska, Aleksandra and Cerović, Dragana and Tadić, Nenad and Janković Častvan, Ivona and Asanović, Koviljka and Kostić, Mirjana",
year = "2019",
abstract = "The jute woven fabric was treated with sodium hydroxide and sodium chlorite under different conditions in order to study the influence of the chemical composition on their sorption and dielectric properties. After the alkali treatments, the hemicelluloses content decreased in the range of 14.4-46.7%, which leads to elementary fiber liberalization and increased moisture sorption of the jute fabrics up to 15.5% and 11.9% at 30% and 80% relative humidity, respectively. The X-ray diffraction analysis shows that the removal of hemicelluloses for 14.4% and 36.6% was followed by a decrease in the crystallinity index for 3.0% and 18.8%, respectively. The additional decrease in hemicelluloses content of 46.7% was accompanied by a slight increase in the crystallinity index for about 14%. These results are in a good agreement with the results obtained for the AC specific electrical conductivity (at 30% and 80% relative humidity). After the oxidative treatments, the lignin content decreased in the range of 37.8%-79.0%, which causes two parallel effects: a slightly increased moisture sorption (up to 7.4% and 4.6% at 30% and 80% relative humidity, respectively) and crystallinity index (from 4.8%-16.6%). The jute fabrics with 37.8% and 63.2% lower lignin content and similar moisture sorption values have the same AC specific electrical conductivities at both relative humidities (30% and 80%) revealing a dominant effect of moisture sorption. The AC specific electrical conductivity of the investigated jute fabrics increases with increasing the frequency as well as relative air humidity, where the highest difference between the values of AC specific electrical conductivity is obtained at the highest frequency (140 kHz).",
publisher = "Elsevier B.V.",
journal = "Industrial Crops and Products",
title = "Sorption and dielectric properties of jute woven fabrics: Effect of chemical composition",
pages = "111632",
volume = "140",
doi = "10.1016/j.indcrop.2019.111632"
}

Ivanovska, A., Cerović, D., Tadić, N., Janković Častvan, I., Asanović, K.,& Kostić, M.. (2019). Sorption and dielectric properties of jute woven fabrics: Effect of chemical composition. in Industrial Crops and Products
Elsevier B.V.., 140, 111632.
https://doi.org/10.1016/j.indcrop.2019.111632

Ivanovska A, Cerović D, Tadić N, Janković Častvan I, Asanović K, Kostić M. Sorption and dielectric properties of jute woven fabrics: Effect of chemical composition. in Industrial Crops and Products. 2019;140:111632.
doi:10.1016/j.indcrop.2019.111632 .

Ivanovska, Aleksandra, Cerović, Dragana, Tadić, Nenad, Janković Častvan, Ivona, Asanović, Koviljka, Kostić, Mirjana, "Sorption and dielectric properties of jute woven fabrics: Effect of chemical composition" in Industrial Crops and Products, 140 (2019):111632,
https://doi.org/10.1016/j.indcrop.2019.111632 . .