41608 2017 eng 465 470 318 article 1 -- -- -- Nano-TiO2 powder is known to show high photocatalytic reactivity in the degradation of several organic pollutants. In thiswork, the powderwas fixed on the surface of SiO2 granuleswith the size of several micrometers using a high shear granulation process. Nanozirconia sol was applied as an inorganic binder. When the samples were tempered at 300 °C, they showed high stability in an aqueous solution for several hours. An energy dispersive x-ray spectroscopy (EDX) analysis confirmed that the cores and shells of the granules consisted solely of SiO2 and TiO2 respectively, and that ZrO2 was found throughout the whole granules. Methylene blue (MB) was employed as amodel systemto evaluate the photocatalytic activity of the TiO2 nanopowder and coated granules. Itwas shown that the TiO2-coated granules lead to the degradation ofMB under UV irradiation,whereas no effect was observed in the dark. After the Degradation experiments the granules could be recovered and they remained active for further applications. Powder Technology 10.1016/j.powtec.2017.06.025 0032-5910 1873-328X 25.08.2017 Caroline Goedecke Regine Sojref Thi Yen Nguyen Christian Piechotta eng uncontrolled Heterogeneous photocatalysis eng uncontrolled Water treatment eng uncontrolled Advanced oxidation eng uncontrolled Nanozirconia eng uncontrolled Methylene blue Sanitär- und Kommunaltechnik; Umwelttechnik Verlagsliteratur Datei im Netzwerk der BAM verfügbar ("Closed Access")