[Zurück]

M. Gebrezgiabher, G. Gebreslassie, T. Gebretsadik, G. Yeabyo, F. Elemo, Y. Bayeh, N.T. Madhu, W. Linert:
"A C-doped-TiO2/Fe3O4 nanocomposite for photocatalytic dye degradation under natural sun light irradiation";
Journal of Composites Science, 3 (2019), S. 75 - 86.

 Magnetically recyclable C-doped TiO2/ Fe3 O4  (C-TiO2/ Fe3 O4 ) nanocomposite was successfully synthesized via a sol-gel method. The synthesized samples were characterized using SEM, energy-dispersive X-ray spectroscopy (EDS), FTIR, and UV-VIS di use reflectance spectroscopy (DRS) techniques. The results clearly showed that a C-TiO2/ Fe3 O4  nanocomposite was produced. The photocatalytic activities of the prepared pristine (TiO2 ), C-doped TiO2  (C-TiO2 ) and C-TiO2/ Fe3 O4  were evaluated by the photodegradation of methyl orange (MO) under natural sunlight. The e ect of catalyst loading andMOconcentration were studied and optimized. The C-TiO2/ Fe3 O4  nanocomposite exhibited an excellent photocatalytic activity (99.68%) that was higher than the TiO2  (55.41%) and C-TiO2  (70%) photocatalysts within 150 min. The magnetic nanocomposite could be easily recovered from the treated solution by applying external magnetic field. The C-TiO2/ Fe3 O4  composite showed excellent photocatalytic performance for four consecutive photocatalytic reactions. Thus, this work could provide a simple method for the mass production of highly photoactive and stable C-TiO2/ Fe3 O4  photocatalyst for environmental remediation.

photodegradation; C-TiO2/Fe3O4 nanocomposite; natural sunlight; dye degradation

http://dx.doi.org/10.3390/jcs3030075