Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media
Аутори
Golubović, Aleksandar V.Simović, Bojana
Gašić, Slavica M.
Mijin, Dušan Ž.
Matković, Aleksandar
Babić, Biljana M.
Šćepanović, Maja
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
TiO2 nanopowders were produced by sol-gel technique using TiCl4 as a starting material. For the preparation of crystalline anatase with developed surface area, this aqueous solution has been mixed with 0.05 M or 0.07 M (NH4)(2)SO4 solution in a temperature-controlled bath. The pH values of the suspension were 7, 8 or 9. According to the x-ray diffraction (XRD) analysis the anatase crystallite sizes were about 12 nm, which coincided with the average particle size revealed by scanning electron microscopy (SEM). The Raman scattering measurements have shown the presence of a small amount of highly disordered brookite phase in addition to dominant anatase phase with similar nanostructure in all synthesized powders. BET measurements revealed that all synthesized catalysts were fully mesoporous, except the sample synthesized with 0.07 M (NH4)(2)SO4 at pH=9, which had small amount of micropores. The photocatalytic degradation of herbicide Clomazone was carried out for both the pure active subs...tance and as the commercial product (GAMIT 4-EC) under UV irradiation. The best photocatalytic efficiency was obtained for the catalyst with the largest specific surface area, confirming this parameter as crucial for enhanced photocatalytic degradation of the pure active substance and commercial product of herbicide Clomazone.
Кључне речи:
Nanopowder / TiO2 / Raman spectroscopy / Photodegradation / ClomazoneИзвор:
Science of Sintering, 2017, 49, 3, 319-330Финансирање / пројекти:
- Наноструктурни мултифункционални материјали и нанокомпозити (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45018)
DOI: 10.2298/SOS1703319G
ISSN: 0350-820X
WoS: 000412888800010
Scopus: 2-s2.0-85037869776
Колекције
Институција/група
VinčaTY - JOUR AU - Golubović, Aleksandar V. AU - Simović, Bojana AU - Gašić, Slavica M. AU - Mijin, Dušan Ž. AU - Matković, Aleksandar AU - Babić, Biljana M. AU - Šćepanović, Maja PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1779 AB - TiO2 nanopowders were produced by sol-gel technique using TiCl4 as a starting material. For the preparation of crystalline anatase with developed surface area, this aqueous solution has been mixed with 0.05 M or 0.07 M (NH4)(2)SO4 solution in a temperature-controlled bath. The pH values of the suspension were 7, 8 or 9. According to the x-ray diffraction (XRD) analysis the anatase crystallite sizes were about 12 nm, which coincided with the average particle size revealed by scanning electron microscopy (SEM). The Raman scattering measurements have shown the presence of a small amount of highly disordered brookite phase in addition to dominant anatase phase with similar nanostructure in all synthesized powders. BET measurements revealed that all synthesized catalysts were fully mesoporous, except the sample synthesized with 0.07 M (NH4)(2)SO4 at pH=9, which had small amount of micropores. The photocatalytic degradation of herbicide Clomazone was carried out for both the pure active substance and as the commercial product (GAMIT 4-EC) under UV irradiation. The best photocatalytic efficiency was obtained for the catalyst with the largest specific surface area, confirming this parameter as crucial for enhanced photocatalytic degradation of the pure active substance and commercial product of herbicide Clomazone. T2 - Science of Sintering T1 - Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media VL - 49 IS - 3 SP - 319 EP - 330 DO - 10.2298/SOS1703319G ER -
@article{ author = "Golubović, Aleksandar V. and Simović, Bojana and Gašić, Slavica M. and Mijin, Dušan Ž. and Matković, Aleksandar and Babić, Biljana M. and Šćepanović, Maja", year = "2017", abstract = "TiO2 nanopowders were produced by sol-gel technique using TiCl4 as a starting material. For the preparation of crystalline anatase with developed surface area, this aqueous solution has been mixed with 0.05 M or 0.07 M (NH4)(2)SO4 solution in a temperature-controlled bath. The pH values of the suspension were 7, 8 or 9. According to the x-ray diffraction (XRD) analysis the anatase crystallite sizes were about 12 nm, which coincided with the average particle size revealed by scanning electron microscopy (SEM). The Raman scattering measurements have shown the presence of a small amount of highly disordered brookite phase in addition to dominant anatase phase with similar nanostructure in all synthesized powders. BET measurements revealed that all synthesized catalysts were fully mesoporous, except the sample synthesized with 0.07 M (NH4)(2)SO4 at pH=9, which had small amount of micropores. The photocatalytic degradation of herbicide Clomazone was carried out for both the pure active substance and as the commercial product (GAMIT 4-EC) under UV irradiation. The best photocatalytic efficiency was obtained for the catalyst with the largest specific surface area, confirming this parameter as crucial for enhanced photocatalytic degradation of the pure active substance and commercial product of herbicide Clomazone.", journal = "Science of Sintering", title = "Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media", volume = "49", number = "3", pages = "319-330", doi = "10.2298/SOS1703319G" }
Golubović, A. V., Simović, B., Gašić, S. M., Mijin, D. Ž., Matković, A., Babić, B. M.,& Šćepanović, M.. (2017). Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media. in Science of Sintering, 49(3), 319-330. https://doi.org/10.2298/SOS1703319G
Golubović AV, Simović B, Gašić SM, Mijin DŽ, Matković A, Babić BM, Šćepanović M. Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media. in Science of Sintering. 2017;49(3):319-330. doi:10.2298/SOS1703319G .
Golubović, Aleksandar V., Simović, Bojana, Gašić, Slavica M., Mijin, Dušan Ž., Matković, Aleksandar, Babić, Biljana M., Šćepanović, Maja, "Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media" in Science of Sintering, 49, no. 3 (2017):319-330, https://doi.org/10.2298/SOS1703319G . .