Photocatalytic degradation of metoprolol in water suspension of TiO2 nanopowders prepared using sol–gel route
- 439 Downloads
Nanocrystalline titanium dioxide (TiO2) powders have been synthesized by sol–gel method using titanium tetrachloride (TiCl4) or tetrabutyl titanate (Ti(OC4H9)4 as precursors, different alcohols and calcination temperatures in the range from 400 to 650 °C. The photocatalytic activity of as-prepared powders has been tested for the degradation of metoprolol tartrate salt, a selective β-blocker used to treat a variety of cardiovascular diseases, and compared to photocatalytic activity obtained from Degussa P25. Nanosized TiO2 powders prepared from TiCl4 and amyl-alcohol, calcined at 550 °C, displayed an activity comparable to Degussa P25, whereas the sample from the same series, calcined at 650 °C, showed higher photocatalytic activity in the whole range of the catalyst loading. Structural, morphological and surface properties of synthesized TiO2 nanopowders have been investigated by XRD, SEM, EDS and BET measurements, as well as FTIR and Raman spectroscopy, in order to find out the material properties which enable rapid an efficient decomposition of metoprolol under UV radiation.
KeywordsNanopowder TiO2 Sol–gel synthesis Raman spectroscopy Photocatalysis
This work was financially supported by the Serbian Ministry of Education and Science Projects No. III45018, ON171032, and ON172042, as well as SASA project F-134, and the Swiss National Science Foundation through Grant No. IZ73Z0-128169.
- 7.Dalrymple OK, Yeh DH, Trotz MA (2007) J Chem Technol 82:121–134Google Scholar
- 10.Abramović B, Kler S, Šojić D, Laušević M, Radović T, Vione D (in press) J Hazard MaterGoogle Scholar
- 22.Kraus W, Nozle G (2000) Power cell program for windows. BAM, BerlinGoogle Scholar
- 36.Grujić-Brojčin MU, Šćepanović MJ, Dohčević-Mitrović ZD, Popović ZV (2009) Acta Phys Polonica A 116:5–54Google Scholar
- 50.Vinu R, Madras G (2010) J Indian I Sci 90:189–230Google Scholar