Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route
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Tomić, NatašaGrujić-Brojčin, Mirjana
Finčur, Nina L.
Abramović, Biljana F.
Simović, Bojana
Krstić, Jugoslav B.
Matović, Branko
Šćepanović, Maja
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Two series of nanocrystalline brookite-type powders have been synthesized by using combined sal gel hydrothermal method with titanium tetrachloride (TiCI4) as a precursor and hydrothermal temperature and reaction time varied in the range of 120-200 degrees C and 12-48 h, respectively. The effects of chosen synthesis parameters on structural, morphological and optical properties of synthesized powders have been investigated by the XRPD, SEM, EDS and BET measurements, as well Raman spectroscopy and spectroscopic ellipsometry. The XRPD results have shown that pure brookite phase, with mean crystallite size of -33 nm, has been obtained only in the sample synthesized at 200 degrees C, after 24 h of hydrothermal process. In all other samples anatase phase also appears, whereas rutile and sodium titanate phases have been noticed in the samples synthesized at lower temperatures. The presence of different titania phases has also been confirmed and analyzed by Raman scattering measurements. The ...SEM measurements have shown spindle-like particles in brookite-rich samples synthesized at 200 degrees C, whereas BET measurements have detected mesoporous structure in these samples. The properties of synthesized powders have been correlated to their photocatalytic efficiency, tested in degradation of alprazolam, one of the 5th generation benzodiazepines. The sample consisted of pure brookite has shown the highest efficiency in the photodegradation of alprazolam, practically equal to the activity of Degussa P25. (C) 2015 Elsevier B.V. All rights reserved.
Keywords:
Oxides / Nanostructures / Sol-gel growth / Raman spectroscopy and scattering / Optical propertiesSource:
Materials Chemistry and Physics, 2015, 163, 518-528Publisher:
- Elsevier
Funding / projects:
- Nanostructured multifunctional materials and nanocomposites (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45018)
- Physics of nanostructured oxide materials and strongly correlated systems (RS-MESTD-Basic Research (BR or ON)-171032)
- Development of Methods of Monitoring and Removal of Biologically Actives Substances Aimed at Improving the Quality of the Environment (RS-MESTD-Basic Research (BR or ON)-172042)
- SASA project [F-134]
DOI: 10.1016/j.matchemphys.2015.08.008
ISSN: 0254-0584; 1879-3312
WoS: 000365361500062
Scopus: 2-s2.0-84940462429
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VinčaTY - JOUR AU - Tomić, Nataša AU - Grujić-Brojčin, Mirjana AU - Finčur, Nina L. AU - Abramović, Biljana F. AU - Simović, Bojana AU - Krstić, Jugoslav B. AU - Matović, Branko AU - Šćepanović, Maja PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/821 AB - Two series of nanocrystalline brookite-type powders have been synthesized by using combined sal gel hydrothermal method with titanium tetrachloride (TiCI4) as a precursor and hydrothermal temperature and reaction time varied in the range of 120-200 degrees C and 12-48 h, respectively. The effects of chosen synthesis parameters on structural, morphological and optical properties of synthesized powders have been investigated by the XRPD, SEM, EDS and BET measurements, as well Raman spectroscopy and spectroscopic ellipsometry. The XRPD results have shown that pure brookite phase, with mean crystallite size of -33 nm, has been obtained only in the sample synthesized at 200 degrees C, after 24 h of hydrothermal process. In all other samples anatase phase also appears, whereas rutile and sodium titanate phases have been noticed in the samples synthesized at lower temperatures. The presence of different titania phases has also been confirmed and analyzed by Raman scattering measurements. The SEM measurements have shown spindle-like particles in brookite-rich samples synthesized at 200 degrees C, whereas BET measurements have detected mesoporous structure in these samples. The properties of synthesized powders have been correlated to their photocatalytic efficiency, tested in degradation of alprazolam, one of the 5th generation benzodiazepines. The sample consisted of pure brookite has shown the highest efficiency in the photodegradation of alprazolam, practically equal to the activity of Degussa P25. (C) 2015 Elsevier B.V. All rights reserved. PB - Elsevier T2 - Materials Chemistry and Physics T1 - Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route VL - 163 SP - 518 EP - 528 DO - 10.1016/j.matchemphys.2015.08.008 ER -
@article{ author = "Tomić, Nataša and Grujić-Brojčin, Mirjana and Finčur, Nina L. and Abramović, Biljana F. and Simović, Bojana and Krstić, Jugoslav B. and Matović, Branko and Šćepanović, Maja", year = "2015", abstract = "Two series of nanocrystalline brookite-type powders have been synthesized by using combined sal gel hydrothermal method with titanium tetrachloride (TiCI4) as a precursor and hydrothermal temperature and reaction time varied in the range of 120-200 degrees C and 12-48 h, respectively. The effects of chosen synthesis parameters on structural, morphological and optical properties of synthesized powders have been investigated by the XRPD, SEM, EDS and BET measurements, as well Raman spectroscopy and spectroscopic ellipsometry. The XRPD results have shown that pure brookite phase, with mean crystallite size of -33 nm, has been obtained only in the sample synthesized at 200 degrees C, after 24 h of hydrothermal process. In all other samples anatase phase also appears, whereas rutile and sodium titanate phases have been noticed in the samples synthesized at lower temperatures. The presence of different titania phases has also been confirmed and analyzed by Raman scattering measurements. The SEM measurements have shown spindle-like particles in brookite-rich samples synthesized at 200 degrees C, whereas BET measurements have detected mesoporous structure in these samples. The properties of synthesized powders have been correlated to their photocatalytic efficiency, tested in degradation of alprazolam, one of the 5th generation benzodiazepines. The sample consisted of pure brookite has shown the highest efficiency in the photodegradation of alprazolam, practically equal to the activity of Degussa P25. (C) 2015 Elsevier B.V. All rights reserved.", publisher = "Elsevier", journal = "Materials Chemistry and Physics", title = "Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route", volume = "163", pages = "518-528", doi = "10.1016/j.matchemphys.2015.08.008" }
Tomić, N., Grujić-Brojčin, M., Finčur, N. L., Abramović, B. F., Simović, B., Krstić, J. B., Matović, B.,& Šćepanović, M.. (2015). Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route. in Materials Chemistry and Physics Elsevier., 163, 518-528. https://doi.org/10.1016/j.matchemphys.2015.08.008
Tomić N, Grujić-Brojčin M, Finčur NL, Abramović BF, Simović B, Krstić JB, Matović B, Šćepanović M. Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route. in Materials Chemistry and Physics. 2015;163:518-528. doi:10.1016/j.matchemphys.2015.08.008 .
Tomić, Nataša, Grujić-Brojčin, Mirjana, Finčur, Nina L., Abramović, Biljana F., Simović, Bojana, Krstić, Jugoslav B., Matović, Branko, Šćepanović, Maja, "Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route" in Materials Chemistry and Physics, 163 (2015):518-528, https://doi.org/10.1016/j.matchemphys.2015.08.008 . .