This paper presents a systematic study on the photocatalytic activity of single-phase BiFeO3 (BFO) nanopowder, under the simulated solar irradiation in the presence of highly polluting textile dye (Mordant Blue 9). BFO nanopowder was synthesized by the means of the ultrasound-assisted sol-gel route. The structural and morphology analyses confirmed phase-pure crystalline BFO nanopowder with particle size of 70 nm. UV-vis spectroscopy measurements have revealed favorably high absorbance of the visible light with the calculated band-gap value of 2.21 eV. Photodegradation process as a function of different pH values of dye aqueous solution (pH = 1, 6.7 and 12) and irradiation time was investigated and the complete degradation mechanism was revealed. Related photodegradation products were detected by high-performance liquid chromatography equipped with mass spectrometer (HPLC/MS-MS). BFO nanoparticles exhibited higher photocatalytic activity in the basic medium than in neutral and acidic me...dium. HPLC/MS-MS analysis of the solutions at pH = 1 and pH = 6.7 showed only decolorization process, with no detectable degradation products, while at pH = 12 three different degradation products were observed, and their concentration slightly decreased with time. Reusability test showed that BFO nanoparticles can be used in four successive photodegradation cycles, with no significant activity losses.
TY - JOUR
AU - Ćirković, Jovana
AU - Radojković, Aleksandar
AU - Luković Golić, Danijela
AU - Tasić, Nikola
AU - Cizmic, Mirta
AU - Branković, Goran
AU - Branković, Zorica
PY - 2021
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1437
AB - This paper presents a systematic study on the photocatalytic activity of single-phase BiFeO3 (BFO) nanopowder, under the simulated solar irradiation in the presence of highly polluting textile dye (Mordant Blue 9). BFO nanopowder was synthesized by the means of the ultrasound-assisted sol-gel route. The structural and morphology analyses confirmed phase-pure crystalline BFO nanopowder with particle size of 70 nm. UV-vis spectroscopy measurements have revealed favorably high absorbance of the visible light with the calculated band-gap value of 2.21 eV. Photodegradation process as a function of different pH values of dye aqueous solution (pH = 1, 6.7 and 12) and irradiation time was investigated and the complete degradation mechanism was revealed. Related photodegradation products were detected by high-performance liquid chromatography equipped with mass spectrometer (HPLC/MS-MS). BFO nanoparticles exhibited higher photocatalytic activity in the basic medium than in neutral and acidic medium. HPLC/MS-MS analysis of the solutions at pH = 1 and pH = 6.7 showed only decolorization process, with no detectable degradation products, while at pH = 12 three different degradation products were observed, and their concentration slightly decreased with time. Reusability test showed that BFO nanoparticles can be used in four successive photodegradation cycles, with no significant activity losses.
PB - Elsevier Sci Ltd, Oxford
T2 - Journal of Environmental Chemical Engineering
T1 - Visible-light photocatalytic degradation of Mordant Blue 9 by single-phase BiFeO3 nanoparticles
IS - 1
VL - 9
DO - 10.1016/j.jece.2020.104587
ER -
@article{
author = "Ćirković, Jovana and Radojković, Aleksandar and Luković Golić, Danijela and Tasić, Nikola and Cizmic, Mirta and Branković, Goran and Branković, Zorica",
year = "2021",
abstract = "This paper presents a systematic study on the photocatalytic activity of single-phase BiFeO3 (BFO) nanopowder, under the simulated solar irradiation in the presence of highly polluting textile dye (Mordant Blue 9). BFO nanopowder was synthesized by the means of the ultrasound-assisted sol-gel route. The structural and morphology analyses confirmed phase-pure crystalline BFO nanopowder with particle size of 70 nm. UV-vis spectroscopy measurements have revealed favorably high absorbance of the visible light with the calculated band-gap value of 2.21 eV. Photodegradation process as a function of different pH values of dye aqueous solution (pH = 1, 6.7 and 12) and irradiation time was investigated and the complete degradation mechanism was revealed. Related photodegradation products were detected by high-performance liquid chromatography equipped with mass spectrometer (HPLC/MS-MS). BFO nanoparticles exhibited higher photocatalytic activity in the basic medium than in neutral and acidic medium. HPLC/MS-MS analysis of the solutions at pH = 1 and pH = 6.7 showed only decolorization process, with no detectable degradation products, while at pH = 12 three different degradation products were observed, and their concentration slightly decreased with time. Reusability test showed that BFO nanoparticles can be used in four successive photodegradation cycles, with no significant activity losses.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of Environmental Chemical Engineering",
title = "Visible-light photocatalytic degradation of Mordant Blue 9 by single-phase BiFeO3 nanoparticles",
number = "1",
volume = "9",
doi = "10.1016/j.jece.2020.104587"
}
Ćirković, J., Radojković, A., Luković Golić, D., Tasić, N., Cizmic, M., Branković, G.,& Branković, Z.. (2021). Visible-light photocatalytic degradation of Mordant Blue 9 by single-phase BiFeO3 nanoparticles. in Journal of Environmental Chemical Engineering
Elsevier Sci Ltd, Oxford., 9(1).
https://doi.org/10.1016/j.jece.2020.104587
Ćirković J, Radojković A, Luković Golić D, Tasić N, Cizmic M, Branković G, Branković Z. Visible-light photocatalytic degradation of Mordant Blue 9 by single-phase BiFeO3 nanoparticles. in Journal of Environmental Chemical Engineering. 2021;9(1).
doi:10.1016/j.jece.2020.104587 .
Ćirković, Jovana, Radojković, Aleksandar, Luković Golić, Danijela, Tasić, Nikola, Cizmic, Mirta, Branković, Goran, Branković, Zorica, "Visible-light photocatalytic degradation of Mordant Blue 9 by single-phase BiFeO3 nanoparticles" in Journal of Environmental Chemical Engineering, 9, no. 1 (2021),
https://doi.org/10.1016/j.jece.2020.104587 . .
