Fabrication of Au(Ag)/AgCl/Fe3O4@PDA@Au nanocomposites with enhanced visible-light-driven photocatalytic activity

Abstract

Here we reported a facile method to synthesize multifunctional nanocables with a tunable chemical composition. Through the in situ templating method, polydopamine could be directly coated onto the magnetic silver nanowires to form Ag NW/Fe₃O₄@PDA nanocables. Then, Au(Ag)/AgCl/Fe₃O₄@PDA@Au was elaborately fabricated by utilizing Ag NWs/Fe₃O₄@PDA as a template by means of spatially confined galvanic replacement and reduction among Ag NWs, PDA and HAuCl₄. These multifunctional nanotubes exhibited excellent photocatalytic activity in the presence of visible light.