Controlled synthesis and photocatalysis of sea urchin-like Fe3O4@TiO2@Ag nanocomposites

Based on the synergistic photocatalytic activities of nano-sized TiO₂and Ag, as well as the magnetic properties of Fe₃O₄, a sea urchin-like Fe₃O₄@TiO₂@Ag nanocomposite (Fe₃O₄@TiO₂@Ag NCs) is controllably synthesized with tunable cavity size, adjustable shell layer of TiO₂nanofiber, higher structural stability and larger specific surface area.