Preparation and characterization of FeO@SiO@TiO@Pd and FeO@SiO@TiO@PdAg nanocomposites and their utilization in enhanced degradation systems and rapid magnetic separation

Two new palladium catalysts immobilized on modified magnetic nanoparticles with titanium dioxide shells (Fe 3 O 4 @SiO 2 @TiO 2 @Pd and Fe 3 O 4 @SiO 2 @TiO 2 @PdAg nanocomposites) were synthesized and characterized using XRD, SEM, TEM, VSM, EDS, DRS and IR techniques. These catalytic systems showed...

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Published in:RSC advances 2016-08, Vol.6 (81), p.7843-7852
Main Authors: Khojasteh, Hossein, Salavati-Niasari, Masoud, Mazhari, Mohammad-Peyman, Hamadanian, Masood
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Summary:Two new palladium catalysts immobilized on modified magnetic nanoparticles with titanium dioxide shells (Fe 3 O 4 @SiO 2 @TiO 2 @Pd and Fe 3 O 4 @SiO 2 @TiO 2 @PdAg nanocomposites) were synthesized and characterized using XRD, SEM, TEM, VSM, EDS, DRS and IR techniques. These catalytic systems showed high activity in the photodegradation of rhodamine B under UV irradiation. The activity of these catalysts was compared and the results showed a higher activity for the Fe 3 O 4 @SiO 2 @TiO 2 @PdAg nanocomposite due to a synergic effect between silver and palladium. The supported catalysts have the advantage of being completely recoverable with the simple application of an external magnetic field. Two new palladium catalysts immobilized on modified magnetic nanoparticles with titanium dioxide shells were synthesized and characterized using XRD, SEM, TEM, VSM, EDS, DRS and IR techniques.
ISSN:2046-2069
DOI:10.1039/c6ra13613c