Preparation And Photocatalytic Properties Study Of Magnetism Fe₃O₄/SnO₂/TiO₂

In this paper, the magnetism core Fe3O₄ have been prepared with Fe(NO₃)₃ and(NH₂)₂·H2O. Then Fe3O₄/SnO₂ have been prepared through precipitation method,and in this reaction the SnCl₄·nH₂O is the main material, the Fe₃O₄ is themagnetism core. At last Fe₃O₄/SnO₂/TiO₂ coated particles have been prepared withTi(OC₄H₉)₄ and Fe₃O₄/SnO₂ as precursors by Sol-Gel method. In order to improvethe photocatalytic degradation activity of Fe₃O₄/SnO₂/TiO₂ for methylic orange, theconditions of preparing were selected and the better photocatalytic activity werereceived. The dynamic of methylic orange photocatalytic degradation reaction andeffect of H₂O₂ were investigated. It's morphology and structure were characterizedby IR, XRD, TEM, XPS and VEM. The result indicated: the photocatalytic activityof Fe₃O₄/SnO₂/TiO₂ are better than those TiO₂ and Fe₃O₄/ TiO₂, It's photocatalyticactivity are just a little worse than SnO₂/TiO₂. H₂O₂ are useful for improving thephotocatalytic activity of Fe₃O₄/SnO₂/TiO₂ and the reaction is zero order reaction.The sample Fe₃O₄/SnO₂/TiO₂ have good magnetism and its easy to reclaim...