1257-1262A visible light-driven magnetic composite photocatalyst, viz., (Pr/MTiO2/Fe3O4), has been prepared by coating photoactive
praseodymium-doped mesoporous titania (Pr/MTiO2) onto magnetic Fe3O4
via hydrolysis of tetrabutyl titanate (Ti(OBu)4) with
Pr(NO3)3•6H2O and Ti(OBu)4 as precursors in the presence of Fe3O4
particles. The
photocatalytic activities of the obtained photocatalysts under visible light are estimated by measuring the
degradation rate of methylene orange in aqueous solution. Results show that the prepared
photocatalyst is activated by
visible light and may be used as effective catalyst in photooxidation reactions. In addition, the
possibility of cyclic usage of the prepared photocatalyst is also confirmed; ca. 88% of the photocatalytic
activity of as-prepared Pr/MTiO2/Fe3O4 is
retained after
being used four times.
Moreover, the photocatalyst can be easily recovered by application of external magnetic field and reused without any
mass loss up to four cyclicity.
The photocatalyst therefore may be potentially applied for the
treatment of water contaminated by organic pollutants.<span style="mso-bidi-font-size:
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