Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route
Samo za registrovane korisnike
2015
Autori
Tomic, N.Grujic-Brojcin, M.
Fincur, N.
Abramović, B.
Simović, Bojana
Krstic, J.
Matović, Branko
Šćepanović, Maja
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
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.
Ključne reči:
Sol-gel growth / Raman spectroscopy and scattering / Oxides / Optical properties / NanostructuresIzvor:
Materials Chemistry and Physics, 2015, 163, 518-528Izdavač:
- Elsevier Science Sa, Lausanne
Finansiranje / projekti:
- SASA project [F-134]
- Nanostrukturni multifunkcionalni materijali i nanokompoziti (RS-45018)
- Fizika nanostrukturnih oksidnih materijala i jako korelisanih sistema (RS-171032)
- Razvoj metoda praćenja i uklanjanja biološki aktivnih supstanci u cilju unapređenja kvaliteta životne sredine (RS-172042)
DOI: 10.1016/j.matchemphys.2015.08.008
ISSN: 0254-0584
WoS: 000365361500062
Scopus: 2-s2.0-84940462429
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Tomic, N. AU - Grujic-Brojcin, M. AU - Fincur, N. AU - Abramović, B. AU - Simović, Bojana AU - Krstic, J. AU - Matović, Branko AU - Šćepanović, Maja PY - 2015 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/842 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. PB - Elsevier Science Sa, Lausanne T2 - Materials Chemistry and Physics T1 - Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route EP - 528 SP - 518 VL - 163 DO - 10.1016/j.matchemphys.2015.08.008 ER -
@article{ author = "Tomic, N. and Grujic-Brojcin, M. and Fincur, N. and Abramović, B. and Simović, Bojana and Krstic, J. 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.", publisher = "Elsevier Science Sa, Lausanne", journal = "Materials Chemistry and Physics", title = "Photocatalytic degradation of alprazolam in water suspension of brookite type TiO2 nanopowders prepared using hydrothermal route", pages = "528-518", volume = "163", doi = "10.1016/j.matchemphys.2015.08.008" }
Tomic, N., Grujic-Brojcin, M., Fincur, N., Abramović, B., Simović, B., Krstic, J., 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 Science Sa, Lausanne., 163, 518-528. https://doi.org/10.1016/j.matchemphys.2015.08.008
Tomic N, Grujic-Brojcin M, Fincur N, Abramović B, Simović B, Krstic J, 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 .
Tomic, N., Grujic-Brojcin, M., Fincur, N., Abramović, B., Simović, Bojana, Krstic, J., 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 . .